Instead of becoming steadily stickier as they are pulled apart, soft hydrogels first become less adhesive and then more adhesive as the pulling speed increases, revealing a previously unknown "sweet spot" where detachment is easier. The discovery challenges a long-held assumption in adhesion mechanics and reveals a new physical mechanism that governs how soft materials attach and detach.

"We expected the adhesion to increase continuously with pulling speed, as predicted by classical theories," said Yuhang Hu, associate professor in the George W. Woodruff School of Mechanical Engineering and the School of Chemical and Biomolecular Engineering. "Instead, we found the exact opposite over a broad range of speeds. That told us there had to be a completely different physical process at work."

Read the full story.

Georgia Tech will play a key role in the newly announced Genesis Mission, a national initiative harnessing artificial intelligence (AI) to propel scientific discovery and address challenges in health, energy, manufacturing, infrastructure, and national security. The White House announced the first Genesis Mission projects on July 22 as part of a more than $5 billion investment in AI-enabled science and technology. 

"One of the goals of the program is to give students the time and support needed to make meaningful progress on their dissertation research while helping them understand the broader policy, economic, and societal implications of their work," said Laura Taylor, director of EPIcenter.

The stipends enable participants to focus exclusively on clearly defined research goals. The program also supports peer discussions, communication training, and interdisciplinary learning opportunities designed to strengthen both their research and professional development.

This year's cohort explored topics ranging from electricity markets and air pollution to critical mineral supply chains and grid modernization, highlighting the breadth of energy-related research taking place across Georgia Tech.

Exploring Complex Energy Challenges

Ana Mazmishvili, who studies environmental and energy economics, used the summer to examine how climate policies affect communities across state lines.

"My research measures who is actually exposed to pollution from power plants when some states adopt climate regulations to cut emissions while neighboring regions do not," Mazmishvili said. "Because air doesn't stop at state borders, the key question is what happens once the pollution is emitted, and who ends up breathing it."

Her work focuses on the Regional Greenhouse Gas Initiative (RGGI), a cap-and-trade program in the Northeast, and investigates whether the benefits and burdens of emissions reductions are distributed equitably between regulated and neighboring states.

Mazmishvili said the program provided valuable time to focus on her job-market paper, a central component of her dissertation.

"The regular meetings with the program director and other fellows create useful accountability checkpoints and let me hear perspectives from people in very different fields," she said. "We're also learning how to make academic research understandable to a general audience, a skill I expect to use well past this summer."

Industrial and systems engineering doctoral student Faeze Fahimi Aghda spent the summer developing an optimization model for the U.S. gallium supply chain, a critical component of many advanced technologies.

Her research uses mathematical modeling to examine where and when domestic gallium processing facilities should be established under the threat of supply disruptions.

"Working on my research through EPIcenter has taught me to look at my problem from a policy point of view rather than focusing only on the math," Fahimi Aghda said. "The feedback within the meetings helped me improve my model."

Ryan Anthony, in the Jimmy and Rosalynn Carter School of Public Policy, explored how one of the largest oil shocks in U.S. history affected electricity customers and whether utility ownership influenced the impact on consumers.

"So far, my research suggests that it mattered a lot,” Anthony said. “Municipal utilities held rates down and absorbed many of the costs, while private, investor-owned utilities passed more costs through to their customers."

Anthony said the program provided critical support for the archival research required for the project.

"My project depends on data that only exists in old government reports, and that kind of archival work is difficult to fund," he said. "EPIcenter gave me the time and space to do it properly."

Connecting Research to Real-World Impact

For Samin Alipour, the summer provided an opportunity to explore how electric grids can adapt to growing numbers of distributed energy resources.

"Most electric distribution systems were built like one-way roads, carrying power from a substation to homes and businesses," Alipour said. "Rooftop solar, batteries, and electric vehicles are turning those roads into two-way systems."

Her research examines how these emerging technologies can be coordinated to increase grid flexibility and clean energy adoption while maintaining safety and reliability and ensuring that costs and benefits are distributed fairly.

With support from EPIcenter, Alipour focused on the economic and policy dimensions of those challenges. "I did not want my research to remain only a technical model," she said. "The program has helped me connect the technical results of my dissertation to economic value, reliability, equity and compensation policy."

One study developed during the summer was accepted for presentation at a specialized power systems conference, an achievement Alipour credits in part to the opportunity to focus on the broader implications of her work.

Building the Next Generation of Energy Scholars

Beyond advancing individual research projects, the Summer Research Program encourages students to engage with colleagues from different disciplines and develop skills for communicating complex ideas to broader audiences.

“Through regular cohort meetings, participants build a community of accountability, discuss research challenges, explore interdisciplinary energy topics, and develop communication skills,” said Gil Gonzalez, program support coordinator for EPIcenter. “Students also write a research-focused blog post for EPIcenter and present their work at the program's fall workshop, which allows them to share their research with the broader Georgia Tech energy community.”

As EPIcenter continues to support interdisciplinary energy scholarship at Georgia Tech, the Summer Research Program equips future leaders with the tools to address complex energy challenges through technological innovation, informed policy, and economic analysis.

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Join Georgia Tech undergraduate Harrison Burnside on this latest episode of Engineered at Tech as he tours Katherine Graham's lab and discovers how to track pathogens in the Chattahoochee River. The goal is to help local agencies pinpoint sources of pollution in rivers and reservoirs to protect public health. 

Watch the video on the COE News page

Launched in 2025, INNS serves as a hub for neuroscience and neurotechnology research, connecting researchers across disciplines to advance discovery, innovation, and societal impact.

“A core part of INNS's mission is helping people find one another, connect around shared interests, and build something bigger than they could accomplish alone,” says Executive Director Christopher Rozell. “Simon has spent his career bringing together people, perspectives, and disciplines to tackle complex challenges. I can't think of a better person to help lead our interdisciplinary research efforts and support the next generation of collaborative neuroscience research.”

A longtime leader in Georgia Tech's neuroscience community, Sponberg helped shape the institute's early foundations through the Neuro Next Initiative, which evolved into INNS. As associate director, he will help guide research strategy, foster new collaborations, and support interdisciplinary work across the neuroscience ecosystem.

“Neuro-related research touches so many fields that we inevitably have a problem of finding all the potential right people and opportunities to tap into,” he said. “A core responsibility of this role is helping catalyze the ideas of new teams of talented researchers, educators, and trainees from inception to realization.”

Sponberg is the Glen Robinson Professor in Complex Systems with appointments in the School of Physics and the School of Biological Sciences, where he directs the Agile Systems Lab. His work also connects him to the Institute for Bioengineering and Bioscience (IBB) and the Institute for Robotics and Intelligent Machines (IRIM), underscoring the cross-disciplinary approach that defines both his research and leadership.

Since joining Georgia Tech in 2014, he has built a highly collaborative research program spanning neuroscience, biology, physics, engineering, and robotics while helping foster interdisciplinary connections across campus. He currently leads a Multidisciplinary University Research Initiative (MURI) that brings together neuroscientists and engineers from five universities to understand how brains achieve fast, flexible perception and decision-making in complex sensory environments. He also co-leads the Integrative Movement Sciences Institute, an NSF Biological Integration Institute focused on understanding movement and muscle function across scales.

His contributions have been recognized through numerous honors, including a Young Investigator Award from the International Society for Neuroethology, a Klingenstein-Simons Fellowship in the Neurosciences, and the Leddy Family Dean’s Faculty Excellence Award.

As associate director, Sponberg will focus on helping researchers identify new opportunities for connection and collaboration. In addition to overseeing seed funding programs, he hopes to create pathways for researchers to build teams, access support resources, pursue ambitious interdisciplinary research ideas, and team with Georgia Tech’s undergraduate and graduate neuroscience degree programs.

“I look forward to being a resource for our community when people are looking for help in building teams or finding opportunities to support their ideas,” he said. “Bring your best ideas and please reach out if you want to talk about ideas in the interdisciplinary neuro space that you want to see realized.”
 

Counterfeit and out-of-spec components are entering U.S. defense supply chains through thousands of small and midsized suppliers that make up the lower tiers of the industrial base. Researchers at the Georgia Tech Manufacturing Institute (GTMI) say the fix isn't just better parts, but better proof: verified digital records, secured against tampering, that travel with each component from raw material to installation.   

The high cost of renting and buying homes in U.S. cities is no secret. But this affordability problem isn’t limited to urban regions – it affects rural areas as well.

Rural areas, home to about 25% of Americans, benefit from federally supported rental housing programs – particularly a U.S. Department of Agriculture program to provide affordable homes for low-income residents.

The USDA’s Section 515 program is the primary way that the U.S. government finances affordable rental homes in rural communities. Since its inception in 1963, the program has supported the construction of over 533,000 apartments, townhouses and other small, multifamily rental homes.

The program offers below-market-rate loans to private and nonprofit developers who build and manage residential housing for low-income residents in small towns and rural counties. The terms of the deal between property owners and the government obliges these landlords to keep rents affordable for their occupants for decades, generally restricting rent to about 30% of tenants’ income.

Last New Loans Were in 2011

People who live in Section 515 housing typically pay around US$325 per month. That’s much less than rural market-rate rents, which typically run $800-$1,100 per month for modest homes.

Because the USDA stopped issuing new Section 515 loans in 2011, this arrangement is phasing out now as existing loans mature.

Loans for about 90% of all remaining Section 515 homes will mature by 2045, according to the Housing Assistance Council, a national nonprofit that supports affordable housing efforts throughout rural America. By 2050, the owners of nearly all properties currently in the program’s portfolio are projected to have paid off their mortgages.

And once most of the owners of these homes exit the Section 515 program, it will have been fully phased out.

An Often-Overlooked Housing Program

As a public policy professor who studies housing, I wanted to understand what happens when Section 515 loans mature. I also was interested in what determines whether properties remain affordable or leave the program after the loans are paid off.

To find out, I worked with three other housing policy researchers on a national study that was peer-reviewed and published in Housing Policy Debate in September 2025.

As of 2024, these loans were still supporting some 400,000 homes on almost 13,000 properties across 87% of all U.S. counties.

The roughly 750,000 Americans in those homes are among the nation’s poorest. The average household income of someone living in Section 515 housing in 2023 was just about $16,000 per year, which was only about one-fifth of the national median household income, which hovered around $76,600 during the same period in inflation-adjusted 2023 dollars.

In addition to having a very low income, more than 60% of the people enrolled in the program are over 62, have disabilities, or fall into both of those categories.

Market-Rate Options After Maturity

The vast majority of these affordable rental homes were built in the 1970s through the 1990s and financed with USDA loans that last between 30 and 50 years.

By 2050, there will be no Section 515 housing left.

The owners of these rental properties no longer have to keep rents affordable once they have paid off their loans. And their owners and tenants may also lose access to a USDA rental assistance program, which helps keep tenants’ housing costs low.

They can refinance the homes or sell the properties. They also can continue to charge affordable rents to occupants or convert those units to market rate. Because of this flexibility, a large share of rural affordable housing units could soon be converted to properties rented at market rates.

What the Data Shows So Far

For this study, our research team analyzed data from nearly 15,000 of the Section 515 properties throughout the country, which have been placed in service since 1963 – including many that are no longer providing rural affordable housing.

We found that the largest factors determining whether a building remains affordable after a Section 515 loan matures are who owns and manages that property. Buildings owned by for-profit companies are far more likely to leave the program than those that belong to nonprofit housing organizations.

Nonprofit-owned buildings, after accounting for building age and local market conditions, are 30% to 40% less likely to convert formerly Section 515 affordable housing into market-rate properties after the owners pay off their loans.

After analyzing this data, we also concluded that buildings run by small property management companies are more likely to leave the program than those managed by larger ones. Properties where the owner manages the homes are also more likely to exit.

Landlords owning more residential properties were also more likely to exit the program. This indicates that larger landlords may be able to afford the renovations and upgrades required to turn their buildings into market-rate housing once restrictions end.

Why Subsidies and Local Markets Matter

Having subsidies through other government programs can help keep affordable housing units from being converted to market-rate housing.

One-third of Section 515 properties also get support from other programs, including Section 8 vouchers and low-income housing tax credits. Those tax credits are another federal incentive that’s provided to developers who build and rehabilitate affordable rental housing while allowing lower rents for low-income tenants.

Those properties are more likely to remain affordable, even years after some of these tax incentives expire.

Local economic conditions can play a role too. In areas with high unemployment rates, large military populations and low housing inventory, properties are also more likely to exit the program.

That means the same rural counties experiencing economic or demographic pressures are often the most likely to have a decline in affordable housing units when owners pay off their Section 515 loans.

Steps That Can Be Taken

Congress and the USDA have taken some steps to slow the loss of affordable housing in rural areas.

For example, the USDA has funded preservation efforts such as the Multifamily Housing Preservation and Revitalization pilot program, which provides grants, loan restructuring and other financing tools to help repair aging Section 515 properties and extend their affordability.

These efforts have helped preserve some buildings and support ownership transfers from private sector landlords to nonprofit housing groups. But they spend only tens of millions of dollars per year and focus mainly on maintaining existing properties rather than building new housing.

Researchers estimate that about $5.6 billion in repairs would be needed to preserve the affordable housing currently tied to the Section 515 program.

Some lawmakers have proposed reforms aimed at doing more than chipping away at the loss of this kind of affordable housing. The bipartisan Rural Housing Service Reform Act, first introduced in 2023 and reintroduced in 2025, would modernize USDA rural housing programs and allow certain rental assistance contracts to continue after mortgages mature. As of early 2026, the bill remains under consideration.

Over the next two decades, most of these landlords will pay off their Section 515 loans. Unless the government reinvigorates the program or replaces it with something else, much of rural America’s affordable rental housing could gradually disappear as owners convert all Section 515 properties to market-rate housing.

Whether rural communities retain affordable housing will depend not only on what the federal government does, but also on the properties’ owners.

This article is republished from The Conversation under a Creative Commons license. Read the original article.

As manufacturing systems become more connected, the cyberthreat grows with them. Saman Zonouz has spent years documenting how vulnerable smart manufacturing environments are. He’s an associate professor in the School of Cybersecurity and Privacy and the School of Electrical and Computer Engineering, where he co-leads the Cyber-Physical Security Lab with Raheem Beyah, Georgia Tech’s provost and executive vice president for Academic Affairs. 

The U.S. has seen its printed circuit board market share plummet to 4% while becoming dangerously dependent on foreign rare earth processing. Now, with global supply chains fracturing, defense industrial capacity under pressure, and adversaries looking to dominate advanced production, the country is in a race to rebuild — and to rebuild smarter. 

The Air Quality Index (AQI) measures how clean or polluted the air is. A healthy AQI is between zero and 50, but when wildfire smoke blows in and settles over cities, the AQI can reach levels of 500 or more. Poor air quality changes where and how people spend their time and money, reduces productivity (even for those working indoors), and increases healthcare costs.

“Environmental regulations like the Clean Air Act dramatically improved our air quality over the past 40 years, but as wildfire season becomes the new normal, wildfire smoke is eroding those gains,” Wichman said. According to recent research, wildfire smoke has erased about a quarter of the progress made over previous decades, and more than half in many western states. 

Read Full Story on the IAC News Page

--Written by Anne Wainscott-Sargent

From a single Atlanta church to a growing network across the Southeast, Georgia Tech engineer Sofía Pérez-Guzmán is connecting communities and researchers to support resilience in extreme weather events. 

For researchers in Georgia Tech's Cyber-Physical Security (CPSec) Lab, however, the vulnerabilities behind many of these incidents are far from new.

Associate Professor Saman Zonouz leads the CPSec Lab and has studied programmable logic controllers (PLCs) for years. These devices automate critical infrastructure, including water treatment facilities, power grids, manufacturing plants, and transportation systems. The lab’s work has revealed widespread internet exposure and software vulnerabilities that leave many industrial control systems vulnerable to cyberattacks.

"Out of the 16 critical infrastructure sectors defined by the Cybersecurity and Infrastructure Security Agency, four are considered lifelines," Zonouz said. "Of those four, communications, energy, transportation, and water, the water sector is the most vulnerable, which is why it is so often targeted."

PLCs serve as the brains of industrial operations, monitoring sensors and controlling equipment that keep essential services operational.

"Imagine you have a thermostat that controls the temperature of your house. That is a type of controller," Zonouz explained. "The professional version does the same thing in industry."

When these controllers are directly accessible from the internet, attackers can exploit them to disrupt operations, manipulate industrial processes, or interfere with the systems that deliver essential services. Controllers may be intentionally exposed to allow operators to monitor equipment remotely. They can also be unintentionally accessible online because of configuration errors.

However, internet exposure is only part of the problem.

The CPSec Lab maintains a collection of PLCs that researchers reverse engineer to better understand their firmware, communication protocols, and security weaknesses. Their research has found that many controllers contain vulnerabilities that attackers can exploit once they gain access.

"Not only can the attackers see the house they want to rob, but the doors are also left unlocked," Zonouz said.

In 2024, Zonouz and his collaborators presented PLCHound at the ACM Conference on Computer and Communications Security (CCS), introducing an automated system that identifies internet-connected PLCs hidden within massive internet-scale datasets collected by services such as Shodan and Censys. The work was led by Ph.D. student Ryan Pickren. Provost and Executive Vice President for Academic Affairs Raheem Beyah, Assistant Professor Frank Li, and Research Scientist Animesh Chhotaray are co-authors of the study. 

Rather than relying on traditional scanning techniques, PLCHound identifies subtle network signatures that reveal industrial devices that prior methods often missed. Using the system, the researchers conducted one of the largest studies of publicly reachable PLCs from major manufacturers.

Their findings showed that previous estimates undercounted the number of internet-accessible industrial controllers by as much as 37 times. Even more concerning, nearly 96% of the identified devices exposed protocols linked to recently disclosed critical vulnerabilities.

The researchers did more than document the problem. After identifying exposed devices, the team launched a large-scale notification campaign, contacting more than 7,000 industrial operators to alert them that their systems appeared vulnerable. The effort enabled many organizations to investigate and address security issues before they could be exploited.

The recent attacks on municipal water systems reinforce concerns researchers have raised for years: many critical infrastructure operators continue to rely on operational technology designed primarily for reliability and performance rather than for cybersecurity.

Improving those defenses, Zonouz said, will require more than simply patching individual vulnerabilities.

The researchers cite the energy sector as a model. Compared with other critical infrastructure sectors, electric utilities generally operate under more mature cybersecurity requirements and undergo routine compliance audits, providing organizations with greater visibility into the devices connected to their networks and the risks they pose.

Implementing those improvements will not be easy. Many municipal water utilities operate with limited budgets and aging infrastructure, leaving little funding available for cybersecurity investments. As attacks on critical infrastructure become more frequent, the researchers argue that gaining visibility into operational technology assets and strengthening oversight are essential first steps to protect the systems communities rely on every day.

The CPSec Lab is a collaborative laboratory within the School of Cybersecurity and Privacy as well as the School of Electrical and Computer Engineering.

As during previous editions, this year’s conference featured more than two dozen scientists, engineers, policy experts, and thought leaders from Georgia Tech and beyond, illustrating how collaboration across fields – from science and engineering to public policy and international affairs – helps to advance strategic research priorities. 

“Frontiers is about discovery and connections across disciplines and generations,” says Susan Lozier, dean of the College of Sciences and Betsy Middleton and John Clark Sutherland Chair. “This edition provided an inspiring glimpse into the future of space exploration and the many ways Georgia Tech is contributing to research and missions seeking answers to what lies beyond our planet.” 

Commitment to Space

Space research is a key institutional priority at Georgia Tech, which is home to numerous academic and research programs in planetary sciences, robotics, mission design, space policy, and other areas. 

The recently established Space Research Institute (SRI) serves as the central hub connecting the broad range of space-related research across campus. Led by Jud Ready, who also serves as principal research engineer at the Georgia Tech Research Institute, SRI has expanded support for space research and commercialization through initiatives such as the CreationsVC Space Fellows Program and Centers, Programs, and Initiatives seed grant program.

SRI’s efforts are in line with Georgia Tech’s long-standing contribution to space exploration. Hundreds of Yellow Jacket alumni work in the space sector, including several graduates who are playing key roles in the Artemis program. To date, more than a dozen Georgia Tech alumni have traveled to space.

Exploring the Final Frontier

The conference featured a series of panels and discussions led by faculty and researchers from the Colleges of Sciences and Engineering as well as the Ivan Allen College of Liberal Arts. 

Sessions explored how researchers are studying the processes and conditions that support planetary habitability, seeking to answer one of humanity’s greatest questions: Does life exist beyond Earth? Speakers also examined how analog fieldwork in Earth’s extreme environments can inform space exploration, and how space research, in turn, can deepen our understanding of our own world.

Additional conversations centered on building better space missions through improved understanding of team and individual resilience, data collection, navigation, and the development of advanced technologies like the robots developed through the NASA LASSIE Project. 

Frontiers also highlighted Georgia Tech’s commitment to preparing the next generation of space scientists, engineers, and leaders. Student training and engagement were recurring themes throughout the day, with speakers emphasizing opportunities for student-led and student-run missions and research. A panel of Georgia Tech alumni shared their own STEM career journeys, challenging the idea of “one right path” to success — and acknowledging the resources and opportunities available at the Institute. 

A highlight of the conference was a fireside chat with Atlanta-native, retired U.S. Army Colonel and NASA Astronaut R. Shane Kimbrough (M.S. Operations Research 1998). Kimbrough, who spent a total of 388 days in space and performed nine spacewalks across three missions, reflected on his career and the evolution of spaceflight. He emphasized the expanding role of public-private and international partnerships in advancing ambitious goals, such as creating a permanent human outpost on the Moon. 

Policy and Public

The conference also explored how policy influences space discovery and innovation, with discussions touching on such issues as space security, access, governance, sustainability — and the influence of technology and science fiction on public perception and policy. 

Panelists described current policy frameworks governing outer space as struggling to keep pace with rapidly advancing technologies and expanding activities. According to these experts, increasing tensions among commercial, research, and recreational uses of space call for greater coordination among private and government entities to balance competing priorities while maximizing opportunities for innovation and exploration. 

The conference was punctuated by a networking lunch connecting attendees with Atlanta’s public astronomy community – including partners at several universities and the Georgia Tech Astronomy Club, which set up telescopes for attendees to safely observe the sun. Later that evening, the Georgia Tech Observatory hosted its Public Night, welcoming the broader Atlanta community to campus for telescope views of Jupiter, the Orion Nebula, and other celestial bodies. 

The Observatory Night was a fitting conclusion to a full day focused on Georgia Tech’s commitment and contributions to inspiring future generations of space explorers through research, education, and outreach. 

Experience the Frontiers conference in pictures on the College of Sciences’ Flickr account.

With a Ph.D. in biomedical engineering and as a former trainee in the Parker H. Petit Institute for Bioengineering and Bioscience (IBB), it’s no surprise that Georgia Tech alumnus and serial entrepreneur Chris Lee loves numbers. One in four. Eighty percent. Five times.  

Recycled materials promise a cleaner future, but recycled content alone does not necessarily make a product sustainable. At Georgia Tech’s Daedalus Lab, assistant professor, National Science Foundation CAREER Award recipient, and Brook Byers Institute for Sustainable Systems Faculty Fellow Christos Athanasiou and postdoctoral researcher Danqi Sun are working to provide greater certainty to designers and engineers by rethinking how materials are tested for their fracture characteristics. Their article in Science Advances details a new testing protocol that reduces cost, increases speed, and simulates real-world conditions.

Materials shape nearly every part of modern life, from packaging and consumer products to bridges and medical devices. Choosing the right material involves balancing durability, cost, manufacturability, and environmental impact. Yet those decisions are not always guided by a clear understanding of how materials age and fail under real-world conditions, especially for recycled materials like plastics.

One way that materials frequently fail is by cracking. A small crack can begin almost invisibly. Over time, it can spread from regular wear and tear and exposure to common environmental factors like moisture, temperature fluctuations, or even dirt. Eventually, the crack expands, and the part fails. Engineers have studied fracture for more than a century, but connecting the science of cracking to practical decisions about sustainability remains a major challenge.

The characteristics of recycled plastics often vary from those of the same material in unrecycled, or virgin, form. Products made from recycled plastics may be sold with sustainability claims under the assumption that they will perform as if they were made with virgin material. However, premature failure requiring repair or replacement can quickly change the sustainability equation as well as the acceptance of recycled materials by manufacturers and consumers.

Beyond Conventional Fracture Testing

Materials rarely fail due to a single factor. They may be exposed to several factors simultaneously, such as mechanical loading, chemical environments, temperature changes, moisture, and time. Traditional fracture protocols test one specimen at a time under carefully controlled laboratory conditions, which bear little resemblance to the real world. To move beyond this limitation, Sun developed an in-situ, high-throughput platform capable of studying how materials degrade and fail under more realistic conditions.

The platform changes conventional fracture testing in three important ways. First, it can test multiple specimens simultaneously rather than one at a time. By monitoring samples in parallel, testing time can be reduced by more than 60%. Second, it allows materials to be tested in realistic environments. In this study, researchers examined virgin and recycled plastics in alkaline environments that resemble conditions encountered in applications like landfill liner membranes and geotextiles. Third, the platform incorporates an imaging technique known as photoelasticity, which reveals the formation of stress fields that form around the origin of a newly developing crack. This allows researchers to see cracks develop earlier than before, giving them a clearer picture of the forces that drive crack growth.

The researchers have made the technology available for licensing through Georgia Tech’s Office of Technology Licensing. “Our goal was to make fracture testing not only faster but also more informative,” Sun said. “By combining high-throughput testing, realistic environments, and full-field stress imaging, we can better understand how materials fail under conditions closer to real-world applications.”

An Honest View of Sustainability

Recycled plastics are often viewed as a greener choice. But according to the study, it’s not always so straightforward. If a recycled product fails prematurely and needs to be replaced frequently, its environmental and economic costs can increase despite its recycled content. As Athanasiou puts it, “Failing materials don’t just break products. They can break sustainability promises.”

For example, comparing virgin polyethylene terephthalate (PET) with recycled PET (rPET) in applications such as landfill geotextiles, the researchers discovered that rPET showed lower resistance to environmental stressors, particularly in alkaline conditions over a pH of 9. In this application, specifying rPET over virgin PET would likely eliminate all of the presumed economic and environmental advantages of using a recycled material.

“Recycling is essential, but recycled content alone does not tell the full story. If a material fails too soon, the environmental benefits can disappear,” Athanasiou said.

From Cracks to Circularity

For the researchers, the significance of the work extends beyond recycled plastics. The broader goal is to provide a fast, affordable, and realistic platform for evaluating the sustainability of any material choice. Because current testing protocols are costly, not widely available, and limited in the information they yield, engineers, manufacturers, and policymakers often have little choice but to continue to specify non-recycled materials because they will perform as expected. Having cheap and accurate data on recycled materials will help to accelerate their adoption because matching the engineering properties of recycled materials to their most appropriate applications will become more obvious.

The researchers also hope to expand the platform to simulate even more complex environments and apply it to a wider range of materials. Because the system generates large amounts of detailed data, it may enable opportunities to use computational modeling or artificial intelligence to digitally simulate mechanical testing, driving down costs and expanding availability even more.

The larger vision is a future in which sustainability is judged not by labels or assumptions, but by evidence for how a material performs, how long it lasts, how it fails, and what it costs society and the environment over its full lifetime.

Please visit the Daedalus Lab YouTube channel to see an explainer video about this new testing protocol: https://youtube.com/watch?v=zmRhiRIiAkQ

Read the paper here: https://www.science.org/doi/10.1126/sciadv.aeh0456

This research was supported by the National Science Foundation CAREER Award No. 2338508.

When most people think of hurricanes, they picture howling winds tearing off roofs and snapping trees. But for Ali Sarhadi, a Brook Byers Institute for Sustainable Systems (BBISS) Faculty Fellow, assistant professor in the School of Earth and Atmospheric Sciences, and director of the Climate Risk and Extreme Dynamics Lab, the real killer is often less visible. “People think that hurricanes are about wind, but sometimes that’s not the whole story,” he said. “The majority of fatalities are coming from the water, not the wind.”

Supported by two Sustainability Next Seed Grants, Sarhadi’s work draws on climate science, fluid physics, engineering, and artificial intelligence. He’s using AI-powered, physics-informed models to better anticipate water hazards that can cripple cities and power grids in both coastal and inland communities.

Rethinking Hurricane Risk

Sarhadi focuses on compound flooding, the dangerous interaction between storm surge, torrential rainfall, and river flooding that increasingly defines hurricanes. He points to Hurricane Mitch, which hit Central America in 1998, as a stark example, noting that more than 12,000 people died, “all from freshwater flooding — none from wind,” he said.

His work has shown how climate change and sea-level rise are reshaping flood risk from storms like Hurricane Sandy, which devastated New York and New Jersey in October 2012. In the current climate, a Sandy-level natural disaster has a recurrence period of roughly once every 150 years. But that is changing fast. “Because of climate change and sea-level rise, by the middle of this century, the same level of flooding is likely to occur once every 60 years. By the end of the century, that goes up to once every 30 years,” he says. “Hurricane Sandy caused about $70 billion in damage. Imagine experiencing that kind of destruction every 30 years.”

Since 1970, Sarhadi notes, damage from tropical cyclones has increased by about 380% globally, a trend driven by the combined effect of stronger storms and more people and infrastructure being located in harm’s way.

Physics-Informed AI: Street-Level Flood Warnings

While storm forecasting has improved dramatically in recent decades, Sarhadi argues, “We’re in good shape in terms of track forecasting, and we’re getting better at rapid intensification forecasting. But what is missing is the hazard part, and specifically the water part. That’s the number one killer.”

His lab is developing AI models tightly coupled with physics-based simulations to forecast hurricane-induced flooding at unprecedented resolution.

Using Hurricane Sandy as a test case, his team showed that by integrating physics-based surge and rainfall models with generative AI, they could forecast building-level flood depths three to five days before landfall. “We could predict that a storm was surge-dominant and estimate how much flooding could happen at the level of each building with an accuracy beyond 90%,” he says.   

Those extra days, and that level of granularity, could give emergency managers and local leaders the information they need to order earlier evacuations, pre-stage resources, and protect critical infrastructure. “We hope by combining AI and physics-based models we can come up with faster, more accurate modeling, first, to save lives, and then to minimize the economic damage,” Sarhadi says.

Targeting Georgia’s Coastline 

Although much of the public’s attention focuses on the Gulf Coast and megacities on the Eastern Seaboard, Georgia’s coastline is also highly vulnerable to surge and compound flooding. Sarhadi is collaborating with Georgia Tech for Georgia’s Tomorrow to model risk in places like Savannah and the surrounding coastal region. “We’re working to come up with good long-term solutions for protecting coastal communities and infrastructure,” he says.

Events like Hurricane Helene in 2024, which triggered extended blackouts in Georgia and lethal flooding in western North Carolina, underscore how far inland these risks can reach. “People think hurricanes are just a problem for coastal areas,” Sarhadi says. “But even if you are far from a coastline, you can be at risk when saturated soils, torrential rain, and river flooding combine.”

Building Climate-Resilient Power Grids and Cities

Sarhadi’s work doesn’t stop at forecasting. A central focus of his research is climate-resilient infrastructure, particularly the power grid. His team is exploring digital twin modeling — virtual replicas of energy and infrastructure systems. “When you have a digital twin of your grid, you can run that hurricane through it and identify which substations or power lines are more vulnerable,” he says, explaining that this knowledge could trigger utility crews to fix or reinforce power lines ahead of storms.

Looking decades ahead, these tools could help utilities and planners prioritize where to upgrade aging infrastructure as hurricanes intensify and water levels rise. “We know hurricanes are getting more intense, and our infrastructure is aging,” Sarhadi said. “By combining engineering, climate science, and AI, we’re trying to design better adaptation plans so our communities and power systems are more resilient in the future.”

The event concluded with the announcement of two rounds of seed funding, offering up to $500,000 annually for three years. The first round, announced in September 2024, provided planning grants to six teams to support their initiatives in the fall.  

Recipients of the second phase of seed funding have now been announced. This phase will provide research support in the spring, with an option for additional funding through the 2025-26 academic year. 

“This seed funding initiative by SEI and GTRI is a significant step toward advancing national security through innovative energy solutions. We believe this support will empower the funded teams to explore critical intersections between energy infrastructure and security, fostering groundbreaking advancements for a safer energy future,” said Christine Conwell, SEI’s interim executive director.  

Seven interdisciplinary projects by team members from Georgia Tech and GTRI have been selected for the second phase, also known as Category B (Table 1). 

“The seed grant initiative is supporting energy and national security collaboration among researchers from multiple units across the Georgia Tech campus,” said William H. Robinson, interim chief technology officer and deputy director for Research in GTRI’s Information and Cyber Sciences Directorate. “We are very pleased to see the teamwork of these faculty members as they address important issues facing our nation.”

A follow-up workshop will be held this summer to bring together the awardees of the seed grant program. Additionally, a lunch and learn seminar series is planned in the fall to showcase the research progress of the seed grant program. For updates, visit the Strategic Energy Institute event webpage.

Lindsey will support BBISS’s research, education, and partnership activities across Georgia Tech and beyond. Working closely with BBISS leadership, faculty, staff, students, and external partners, he will coordinate Institute programs, support leadership operations, facilitate stakeholder engagement, and help ensure smooth day-to-day operations.

Andrew brings more than four years of experience in project management, operations, communications, compliance oversight, and organizational improvement in higher education and nonprofit settings. Most recently, he served as project intake and communications specialist at Kennesaw State University. Before that, Lindsey spent nearly four years with the Southern States Police Benevolent Association, first as project coordinator and later as project manager.

Lindsey’s background also includes experience in higher education instruction and mentoring. As a teaching assistant with Georgia Tech’s Grand Challenges program, he worked directly with student teams tackling complex societal issues, providing guidance on research development, collaborative problem-solving, and project execution.

He earned a B.A. in history, graduating magna cum laude from the University of Georgia in 2021, and completed a Master of Public Administration in 2025.

“Andrew’s experience supporting complex projects, improving organizational processes, coordinating across diverse stakeholder groups, and commitment to mission-driven work make him a strong addition to the team,” said BBISS Director of Business Administration Kristina Chatfield.

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School of Electrical and Computer Engineering (ECE) Assistant Professor Amirali Aghazadeh and Ph.D. student Daniel Saeedi have developed AstroAgents, an AI system that analyzes mass spectrometry data — detailed chemical compositions from meteorites and Earth soil samples — to generate novel hypotheses about the origins of life on the planet. 

What sets AstroAgents apart is its use of agentic AI. Unlike traditional AI systems that perform fixed tasks, this agentic system is designed to pursue a scientific goal. It draws from astrobiology literature, interprets complex data, and proposes original ideas that researchers can investigate further. 

Their paper, recently featured in the journal Nature, is opening new possibilities for how scientists explore questions that have remained unanswered for decades. 

In a special Q&A, Aghazadeh and Saeedi explain how AstroAgents analyzes space chemistry, what it’s revealing about the possible origins of life on Earth, and what they hope to explore next.

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It’s not glamorous. It’s not trendy. In fact, it’s downright grubby. But the work that a Georgia Tech researcher and his students are doing is improving campus sustainability, one pound of food waste at a time. 

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The initiative included Phase 1 or Category A grants that allowed researchers up to $10,000 in seed funding to understand the viability of their research concepts. The multidisciplinary proposals that won the Category A grants include:

Project Title: Energy Infrastructure Security and Risk Assessment Through Interactive Wargaming
Primary Investigator(s)
Dimitri Mavris (School of Aerospace Engineering)
Scott Duncan (School of Aerospace Engineering)
Michael Balchanos (School of Aerospace Engineering)

Other Investigators
Adam Stulberg (School of International Affairs)
Jenna Jordan (School of International Affairs)
Margaret Kosal (School of International Affairs)

Project Title: International Workshop on Nuclear Cybersecurity: Strengthening Global Leadership and Collaboration

Primary Investigator(s)
Fan Zhang (Nuclear and Radiological Engineering)
Steve Biegalski (Nuclear and Radiological Engineering)
Valerie Thomas (School of Industrial and Systems Engineering)
Alexander Miranda (Electrial and Computer Engineering)

Other Investigators
Guenevere Chen (Electrial and Computer Engineering) (University of Texas San Antonio)

Project Title: Robust Energy Systems Planning by way of Novel Systems Engineering (RESPoNSE)

Primary Investigator(s): Comas Haynes (GTRI)

Other Investigators
Matt McDowell (School of Mechanical Engineering and School of Materials Science and Engineering)

Project Title: Shielding and Microreactor Arrangement Innovation (Samμrai)

Primary Investigator(s)
John Brittingham (GTRI)
Bojan Petrovic (School of Mechanical Engineering)

Other Investigators
Helen Works (GTRI)

Project Title: The Strategic Mineral Economy: Challenges and Opportunities for Critical Resources

Primary Investigator(s)
Bobby Harris (School of Economics)
Matthew Swarts (GTRI)

Other Investigators
Dylan Brewer (School of Economics)
Kevin Caravati (GTRI)
Laura Taylor (School of Economics)
Micah S. Ziegler (School of Chemical and Biomolecular Engineering, School of Public Policy)

Project Title: Trustworthy AI for Critical Power Grid Infrastructure Resilience
Primary Investigator(s): 
Glen Chou (School of Cybersecurity and Privacy)
Yatis Dodia (GTRI)
Saman Zonouz (School of Cybersecurity and Privacy, School of Electrical and Computer Engineering)

Phase 2 or Category B of the initiative includes up to $500,000 in seed funding to fund team research proposals, with funds likely to grow to $1.2 million in the coming years. Please note that teams must largely consist of those who participated in or expressed interest via the July workshop. 

Georgia Tech researchers and faculty are encouraged to submit the Notice of Intent for Phase 2 (Category B) submissions. While this is not a requirement of the proposal, it will provide the initiative with insights that will help with internal logistics. If you have any questions regarding the Category B Notice of Intent and the grant, please contact the Strategic Energy Institute at connect@energy.gatech.edu.

School of City and Regional Planning Assistant Professor Rounaq Basu knows it, too. So he and his students (supported by the Center for Urban Resilience and Analytics) created the Cool Routes app to help people in Atlanta find the most shaded — and most importantly, the coolest — paths if they have to walk or bike outside.

Describing Atlanta’s latest heatwave, “This is great for research, but not so great for residents,” Basu said. “I like to walk and bike everywhere, and it’s too hot. I need to know where the shaded paths are!”

The Cool Routes app currently covers 10 cities in the U.S., including Atlanta. Users choose a city from a dropdown menu, provide a trip start and destination, tell the app whether they’re walking or biking, and select route preferences. The app then generates up to three routes to the user’s destination, allowing them to compare how much cooler one route is from another. Further refinement of routes is offered after that.

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The SCC is home to seven student engineering competition teams and provides workspace, tools, and resources to help students apply classroom learning to real-world engineering challenges.

In his new role, Simmons will provide strategic leadership and operational oversight for student competition teams, facilities, staff, budgets, sponsorships, and safety programs. He also will teach and mentor students through engineering design and experiential learning courses, helping connect classroom instruction with project-based experiences.

“Richard brings a unique combination of industry experience, research leadership, and deep commitment to student success,” said Carolyn Seepersad, Eugene C. Gwaltney, Jr. School Chair. “As an accomplished engineer and a Georgia Tech alumnus, he understands the value of experiential learning and is well-positioned to lead the Student Competition Center.”

Simmons, ME 1993, joined Georgia Tech in 2016 after spending the first 20 years of his career leading research, technology, and business development initiatives in the automotive industry, energy sector, and federal government. After graduating from Tech, he earned his master’s and doctoral degrees from Purdue University and later became a licensed professional engineer.

Over the past decade, Simmons has held several leadership and research positions within Georgia Tech’s Strategic Energy Institute, including founding director of the Energy Policy and Innovation Center and, most recently, director of Research and Studies. He has also taught a variety of courses at the Woodruff School, including ME 2110, Capstone Design, Energy Systems, and Renewable Energy.

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Blending engineering challenges, field experiences, and team-based design projects, the weeklong program in June gave students a dynamic introduction to energy, sustainability, and engineering innovation and a rare opportunity to engage directly with the technologies, infrastructure, people, and ideas that help power the world.

“Our goal is to get outside of the classroom, have fun, and demonstrate how a STEM education can literally help turn on lightbulbs,” said SEI’s director of Research and Studies, Rich Simmons, who also directs Energy Unplugged. “Through hands-on learning, field trips, and real-world experiences, these creative students are learning that everyone can play a role in our energy future. Along the way, they are gaining a deeper understanding of the tradeoffs and challenges engineers face and learning from experts about pathways to an energy career.”

Mousetrap-Powered Cars
Putting those ideas into practice from day one, the camp began with an engineering challenge in which students designed and constructed mousetrap-powered cars. Using the stored potential energy of a mousetrap spring to propel their vehicles, participants explored how energy is converted from one form to another and identified sources of friction and inefficiency that affect the distance traveled. The activity encouraged students to think like engineers, iteratively testing and refining their designs to improve results.

Engineering Optimization and Tradeoffs
Similar problem-solving skills were put to the test during an RC car optimization challenge. Equipped with a battery-powered vehicle and energy-monitoring systems, students were tasked with completing a driving course while maximizing their score by balancing speed, energy consumption, safety, and cargo capacity. Participants had the option to add weights and tennis balls to increase potential points, but doing so increased the risk of penalties from dropped cargo, missed obstacles, or vehicle rollovers. The exercise highlighted the tradeoffs engineers routinely face when optimizing systems under competing constraints.

“The overall interest in green energy among youth is increasing, so having demonstrations and experiments as well as some high-level lectures on the actual science was a great way to engage the students,” said student assistant William Nudd, a senior in mechanical engineering who assisted with the camp. “When I was in their shoes, I had never attended a physics class, so the camp was definitely getting them a step ahead and did a great job introducing and showcasing key concepts related to energy: How does my home get electricity? Where does energy come from? How do power plants operate?”

Trivia, Demos, and Scavenger Hunts
Additional activities throughout the week included energy-themed trivia competitions, a steam engine demonstration, a solar microgrid exercise, and a campus scavenger hunt. Together, they reinforced classroom concepts through interactive learning and encouraged students to connect technical principles with practical applications.

Field Trips to Power Plants
While these activities taught foundational concepts, a highlight of the camp was a series of field trips that allowed students to observe large-scale energy infrastructure in operation. Participants toured the Georgia Power McDonough-Atkinson Plant, where they learned how combined-cycle power plants generate electricity using both gas and steam turbines to improve efficiency. Students also visited the Morgan Falls hydroelectric facility, getting an up-close view of the massive generators and equipment used to convert the energy of flowing water into electricity.

Campus Tours
In addition to exploring regional energy infrastructure, students were introduced to Georgia Tech’s innovation ecosystem through visits to campus makerspaces and research facilities, including the Flowers Invention Studio and The Kendeda Building for Innovative Sustainable Design. Students explored one of the nation’s most advanced examples of sustainable building design during a guided tour of The Kendeda Building, which generates 200% of the energy it consumes. Here they learned how energy efficiency, renewable generation, and resource conservation can be integrated into the built environment.

Final Projects 
To bring together the concepts explored throughout the week, students worked in teams on a final design challenge centered around a solar-powered disaster relief trailer on loan from the Footprint Project. Equipped with photovoltaic panels and battery storage, the trailer was originally designed to provide off-grid power during emergencies. Students were challenged to identify additional uses for the system during periods when disaster response was not required. Many teams proposed sustainable food truck businesses powered by the trailer’s solar energy system.

Teams also evaluated cooking technologies such as pressure cookers and slow cookers, comparing energy consumption, power requirements, efficiency, and operating costs. Students examined how energy demand aligned with available solar generation and battery storage while conducting economic analyses to determine business viability and profitability. The project integrated engineering, economics, and sustainability principles while encouraging creative thinking and collaborative problem-solving. 

“Energy Unplugged is an inspiring demonstration of how hands-on engineering experiences can spark curiosity and passion in the next generation of STEM leaders,” said student assistant Alvaro Hucker, a senior mechanical engineering student. “Working with this group and seeing the fun they were having brought back fond memories of my own childhood. It was an amazing experience.”

Student Contributors: Alvaro Hucker, Senior, Mechanical Engineering and William Nudd, Senior, Mechanical Engineering.