{"616388":{"#nid":"616388","#data":{"type":"news","title":"Brilliant Glow of Paint-On Semiconductors Comes from Ornate Quantum Physics","body":[{"value":"\u003Cp\u003ELED lights and monitors, and quality solar panels were born of a revolution in\u0026nbsp;\u003Ca href=\u0022https:\/\/www.sciencedirect.com\/topics\/chemistry\/optoelectronics\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Esemiconductors\u003C\/a\u003E\u0026nbsp;that efficiently convert energy to light or vice versa. Now, next-generation semiconducting materials are on the horizon, and\u0026nbsp;\u003Cstrong\u003E\u003Ca href=\u0022https:\/\/www.nature.com\/articles\/s41563-018-0262-7\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Ein a new study\u003C\/a\u003E\u003C\/strong\u003E, researchers have uncovered eccentric physics behind their potential to transform lighting technology and photovoltaics yet again.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EComparing the quantum properties of these emerging so-called hybrid semiconductors with those of their established predecessors is about like comparing the Bolshoi Ballet to jumping jacks. Twirling troupes of quantum particles undulate through the emerging materials, creating, with ease, highly desirable optoelectronic (light-electronic) properties, according to a team of physical chemists led by\u0026nbsp;\u003Ca href=\u0022https:\/\/www.chemistry.gatech.edu\/people\/Silva%20\/Carlos\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Eresearchers at the Georgia Institute of Technology\u003C\/a\u003E.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThese same properties are impractical to achieve in established semiconductors.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe particles moving through these new materials also engage the material itself in the quantum action, akin to dancers enticing the floor to dance with them. The researchers were able to measure patterns in the material caused by the dancing and relate them to the emerging material\u0026rsquo;s quantum properties and to energy introduced into the material.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThese insights could help engineers work productively with the new class of semiconductors.\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EUnusually flexible semiconductors\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EThe emerging material\u0026rsquo;s ability to house diverse, eccentric quantum particle movements, analogous to the dancers, is directly related to its unusual flexibility on a molecular level, analogous to the dancefloor that joins in the dances. By contrast, established semiconductors have rigid, straight-laced molecular structures that leave the dancing to quantum particles.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe class of hybrid semiconductors the researchers examined is called\u0026nbsp;\u003Ca href=\u0022https:\/\/www.google.com\/search?biw=1532\u0026amp;bih=783\u0026amp;tbm=isch\u0026amp;sa=1\u0026amp;ei=9sI4XI-_LYGIggf-qbSACA\u0026amp;q=halide+organic-inorganic+perovskite+carlos+silva\u0026amp;oq=halide+organic-inorganic+perovskite+carlos+silva\u0026amp;gs_l=img.3...20279.21300..21580...0.0..0.52.338.7......1....1..gws-wiz-img.Yz18-ph1WLk#imgrc=r3vU05y-A4rlnM:\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Ehalide organic-inorganic perovskite\u003C\/a\u003E\u0026nbsp;(HOIP), which will be explained in more detail at bottom along with the \u0026ldquo;hybrid\u0026rdquo; semiconductor designation, which combines a crystal lattice -- common in semiconductors -- with a layer of innovatively flexing material.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EBeyond their promise of unique radiance and energy-efficiency, HOIPs are easy to produce and apply.\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EPaint them on\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;One compelling advantage is that HOIPs are made using low temperatures and processed in solution,\u0026rdquo; said\u0026nbsp;\u003Ca href=\u0022https:\/\/www.chemistry.gatech.edu\/people\/Silva%20\/Carlos\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003ECarlos Silva, a professor in Georgia Tech\u0026rsquo;s School of Chemistry and Biochemistry\u003C\/a\u003E. \u0026ldquo;It takes much less energy to make them, and you can make big batches.\u0026rdquo; Silva co-led the study alongside\u0026nbsp;\u003Ca href=\u0022https:\/\/iit.it\/index.php\/people\/srinivasa-srimath\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003EAjay Ram Srimath Kandada\u003C\/a\u003E\u0026nbsp;from Georgia Tech and the Istituto Italiano di Tecnologia.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIt takes high temperatures to make most semiconductors in small quantities, and they are rigid to apply to surfaces, but HOIPs could be painted on to make LEDs, lasers or even window glass that could glow in any color from aquamarine to fuchsia. Lighting with HOIPs may require very little energy, and solar panel makers could boost photovoltaics\u0026rsquo; efficiency and slash production costs.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe team led by Georgia Tech included researchers from the Universit\u0026eacute; de Mons in Belgium and the Istituto Italiano di Tecnologia. The results were published\u0026nbsp;\u003Cstrong\u003E\u003Ca href=\u0022https:\/\/www.nature.com\/articles\/s41563-018-0262-7\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Eon January 14, 2019, in the journal\u0026nbsp;\u003Cem\u003ENature Materials\u003C\/em\u003E\u003C\/a\u003E\u003C\/strong\u003E. The work was funded by the U.S. National Science Foundation, EU Horizon 2020, the Natural Sciences and Engineering Research Council of Canada, the Fond Qu\u0026eacute;b\u0026eacute;cois pour la Recherche, and the Belgian Federal Science Policy Office.\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Ch6\u003E[Thinking about grad school?\u0026nbsp;\u003Ca href=\u0022http:\/\/www.gradadmiss.gatech.edu\/apply-now\u0022 target=\u0022_blank\u0022\u003EHere\u0026#39;s how to apply to Georgia Tech.\u003C\/a\u003E]\u003C\/h6\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EQuantum jumping jacks\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003ESemiconductors in optoelectronic devices can either convert light into electricity or electricity into light. The researchers concentrated on processes connected to the latter: light emission.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe trick to getting a material to emit light is, broadly speaking, to apply energy to electrons in the material, so that they take a\u0026nbsp;\u003Ca href=\u0022https:\/\/en.wiktionary.org\/wiki\/quantum_leap\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Equantum leap\u003C\/a\u003E\u0026nbsp;up from their orbits around atoms then emit that energy as light when they hop back down to the orbits they had vacated. Established semiconductors can\u0026nbsp;\u003Ca href=\u0022https:\/\/www.britannica.com\/science\/trap-solid-state-physics\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Etrap\u003C\/a\u003E\u0026nbsp;electrons in areas of the material that strictly limit the electrons\u0026rsquo; range of motion then apply energy to those areas to make electrons do quantum leaps in unison to emit useful light when they hop back down in unison.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;These are\u0026nbsp;\u003Ca href=\u0022https:\/\/www.rp-photonics.com\/quantum_wells.html\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Equantum wells\u003C\/a\u003E, two-dimensional parts of the material that confine these quantum properties to create these particular light emission properties,\u0026rdquo; Silva said.\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EImaginary particle excitement\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EThere is a potentially more attractive way to produce the light, and it is a core strength of the new hybrid semiconductors.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EAn electron has a negative charge, and an orbit it vacates after having been excited by energy is a positive charge called an\u0026nbsp;\u003Ca href=\u0022https:\/\/whatis.techtarget.com\/definition\/hole\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Eelectron hole\u003C\/a\u003E. The electron and the hole can gyrate around each other forming a kind of imaginary particle, or\u0026nbsp;\u003Ca href=\u0022https:\/\/en.wikipedia.org\/wiki\/Quasiparticle\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Equasiparticle\u003C\/a\u003E, called an\u0026nbsp;\u003Ca href=\u0022https:\/\/www.britannica.com\/science\/exciton\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Eexciton\u003C\/a\u003E.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;The positive-negative attraction in an exciton is called\u0026nbsp;\u003Ca href=\u0022https:\/\/www.euronuclear.org\/info\/encyclopedia\/bindingenergy.htm\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Ebinding energy\u003C\/a\u003E, and it\u0026rsquo;s a very high-energy phenomenon, which makes it great for light emitting,\u0026rdquo; Silva said.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EWhen the electron and the hole reunite, that releases the binding energy to make light. But usually, excitons are very hard to maintain in a semiconductor.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;The excitonic properties in conventional semiconductors are only stable at extremely cold temperatures,\u0026rdquo; Silva said. \u0026ldquo;But in HOIPs the excitonic properties are very stable at room temperature.\u0026rdquo;\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EOrnate quasiparticle twirling\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EExcitons get freed up from their atoms and move around the material. In addition, excitons in an HOIP can whirl around other excitons, forming quasiparticles called biexcitons. And there\u0026rsquo;s more.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EExcitons also spin around atoms in the material lattice. Much the way an electron and an electron hole create an exciton, this twirl of the exciton around an atomic nucleus gives rise to yet another quasiparticle called a\u0026nbsp;\u003Ca href=\u0022https:\/\/www.britannica.com\/science\/polaron\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Epolaron\u003C\/a\u003E. All that action can result in excitons transitioning to polarons back. One can even speak of some excitons taking on a \u0026ldquo;polaronic\u0026rdquo; nuance.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECompounding all those dynamics is the fact that HOIPs are full of positively and negatively charged ions. The ornateness of these quantum dances has an overarching effect on the material itself.\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003EWave patterns resonate\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EThe uncommon participation of atoms of the material in these dances with electrons, excitons, biexcitons and polarons creates repetitive nanoscale indentations in the material that are observable as wave patterns and that shift and flux with the amount of energy added to the material.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;In a ground state, these wave patterns would look a certain way, but with added energy, the excitons do things differently. That changes the wave patterns, and that\u0026rsquo;s what we measure,\u0026rdquo; Silva said. \u0026ldquo;The key observation in the study is that the wave pattern varies with different types of excitons (exciton, biexciton, polaronic\/less polaronic).\u0026rdquo;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe indentations also grip the excitons, slowing their mobility through the material, and all these ornate dynamics may affect the quality of light emission.\u003C\/p\u003E\r\n\r\n\u003Ch4\u003E\u003Cstrong\u003ERubber band sandwich\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EThe material, a halide organic-inorganic perovskite, is a sandwich of two inorganic crystal lattice layers with some organic material in between them \u0026ndash; making HOIPs an organic-inorganic hybrid material. The quantum action happens in the crystal lattices.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe organic layer in between is like a sheet of rubber bands that makes the crystal lattices into a wobbly but stable dancefloor. Also, HOIPs are put together with many\u0026nbsp;\u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=nwu_Dpizmsk\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022\u003Enon-covalent bonds\u003C\/a\u003E, making the material soft.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIndividual units of the crystal take a form called perovskite, which is a very even diamond shape, with a metal in the center and halogens such as chlorine or iodine at the points, thus \u0026ldquo;halide.\u0026rdquo; For this study, the researchers used a 2D prototype with the formula (PEA)\u003Csub\u003E2\u003C\/sub\u003EPbI\u003Csub\u003E4\u003C\/sub\u003E.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAlso READ: \u003Ca href=\u0022http:\/\/www.rh.gatech.edu\/news\/599811\/perking-and-crimping-bristles-polyelectrolyte-brushes\u0022 target=\u0022_blank\u0022\u003EPerking up and Crimping the \u0026#39;Bristles\u0026#39; of Polyelectrolyte Brushes\u003C\/a\u003E\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cem\u003EThe study was co-authored by F\u0026eacute;lix Thouin (co-first author), David A. Valverde-Ch\u0026aacute;vez (co-first author), and Ilaria Bargigia, all of Georgia Tech; Claudio Quarti and David Beljonne of the Universit\u0026eacute; de Mons in Belgium; Daniele Cortecchia and Annamaria Petrozza of the Istituto Italiano di Tecnologia. The research was funded by\u0026nbsp;\u003C\/em\u003E\u003Cem\u003EEU Horizon 2020 (project 705874); the Natural Sciences and Engineering Research Council\u003C\/em\u003E\u0026nbsp;\u003Cem\u003Eof Canada; Fond Qu\u0026eacute;b\u0026eacute;cois pour la Recherche: Nature et Technologies; the National Science Foundation (grant 1838276); Interuniversity Attraction Pole program of the Belgian Federal Science Policy Office (PAI 6\/27) and the Fonds de la Recherche Scientifique de Belgique (FNRS-F.R.S.). Beljonne is an F.R.S. director. Any findings, opinions, and conclusions are those of the authors and not necessarily of the funding agencies.\u003C\/em\u003E\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EA new wave of semiconductors that can be painted on is on the horizon. It bears the promise of revolutionizing lighting all over again and of transforming solar energy. Ornate quantum particle action, revealed here, that drives the new material\u0026#39;s properties defies the workings of established semiconductors.\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"A new revolution in semiconductors could transform lighting and solar energy, and this is what their crazy physics look like."}],"uid":"31759","created_gmt":"2019-01-14 23:00:05","changed_gmt":"2019-01-15 15:10:17","author":"Ben Brumfield","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2019-01-14T00:00:00-05:00","iso_date":"2019-01-14T00:00:00-05:00","tz":"America\/New_York"},"extras":[],"hg_media":{"616386":{"id":"616386","type":"image","title":"Visible laser to study semiconductor properties close up","body":null,"created":"1547505628","gmt_created":"2019-01-14 22:40:28","changed":"1547505628","gmt_changed":"2019-01-14 22:40:28","alt":"","file":{"fid":"234613","name":"Vis.Laser2_.Silva_.jpg","image_path":"\/sites\/default\/files\/images\/Vis.Laser2_.Silva_.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/Vis.Laser2_.Silva_.jpg","mime":"image\/jpeg","size":5136618,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Vis.Laser2_.Silva_.jpg?itok=FUHYxhUt"}},"616385":{"id":"616385","type":"image","title":"Carlos Silva and Felix Thouin in Silva\u0027s lab at Georgia Tech","body":null,"created":"1547505511","gmt_created":"2019-01-14 22:38:31","changed":"1547505511","gmt_changed":"2019-01-14 22:38:31","alt":"","file":{"fid":"234612","name":"Silva.Thouin.jpg","image_path":"\/sites\/default\/files\/images\/Silva.Thouin.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/Silva.Thouin.jpg","mime":"image\/jpeg","size":4061246,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Silva.Thouin.jpg?itok=GtS0ihGU"}},"616383":{"id":"616383","type":"image","title":"Visible laser to study semiconductor properties","body":null,"created":"1547504773","gmt_created":"2019-01-14 22:26:13","changed":"1547504773","gmt_changed":"2019-01-14 22:26:13","alt":"","file":{"fid":"234611","name":"Vis.laser_.jpg","image_path":"\/sites\/default\/files\/images\/Vis.laser_.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/Vis.laser_.jpg","mime":"image\/jpeg","size":6580524,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Vis.laser_.jpg?itok=D7f_-Ld0"}},"616387":{"id":"616387","type":"image","title":"HOIP, halide organic-inorganic perovskite","body":null,"created":"1547505771","gmt_created":"2019-01-14 22:42:51","changed":"1547505771","gmt_changed":"2019-01-14 22:42:51","alt":"","file":{"fid":"234614","name":"HOIP.jpg","image_path":"\/sites\/default\/files\/images\/HOIP.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/HOIP.jpg","mime":"image\/jpeg","size":242952,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/HOIP.jpg?itok=Kjw9s0f7"}},"616398":{"id":"616398","type":"image","title":"David Valverde-Ch\u00e1vez and Felix Thouin","body":null,"created":"1547564899","gmt_created":"2019-01-15 15:08:19","changed":"1547564899","gmt_changed":"2019-01-15 15:08:19","alt":"","file":{"fid":"234618","name":"Chavez.Thouin.jpg","image_path":"\/sites\/default\/files\/images\/Chavez.Thouin.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/Chavez.Thouin.jpg","mime":"image\/jpeg","size":3963930,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Chavez.Thouin.jpg?itok=o_QbPcDf"}}},"media_ids":["616386","616385","616383","616387","616398"],"groups":[{"id":"1214","name":"News Room"},{"id":"1188","name":"Research Horizons"}],"categories":[{"id":"135","name":"Research"},{"id":"141","name":"Chemistry and Chemical Engineering"},{"id":"144","name":"Energy"},{"id":"145","name":"Engineering"},{"id":"150","name":"Physics and Physical Sciences"}],"keywords":[{"id":"167609","name":"semiconductor"},{"id":"180172","name":"LED light"},{"id":"180173","name":"Led Lighting"},{"id":"180174","name":"LED Lights"},{"id":"1073","name":"photovoltaic"},{"id":"180175","name":"photovoltaic materials"},{"id":"180176","name":"photovoltaic panels"},{"id":"180177","name":"photovoltaic power"},{"id":"180178","name":"Photovoltaic Technology"},{"id":"953","name":"photovoltaics"},{"id":"180179","name":"hybrid semiconductor"},{"id":"180180","name":"quantum particle"},{"id":"9671","name":"Quantum Mechanics"},{"id":"180181","name":"Quantum properties"},{"id":"180182","name":"halide perovskite"},{"id":"180183","name":"halide organic-inorganic perovskite"},{"id":"177427","name":"HOIP"},{"id":"177428","name":"metal-halide"},{"id":"177429","name":"lead iodide"},{"id":"177430","name":"PbI4"},{"id":"1815","name":"optoelectronics"},{"id":"177431","name":"semiconductor for optoelectronics"},{"id":"174838","name":"perovskite"},{"id":"177432","name":"hybrid organic-inorganic perovskite"},{"id":"177433","name":"exciton"},{"id":"177434","name":"biexciton"},{"id":"4260","name":"laser"},{"id":"167182","name":"solar"},{"id":"177435","name":"photoelectric"},{"id":"167355","name":"silicon"},{"id":"180184","name":"Graphene Electronics an"},{"id":"180185","name":"Optoelectronic"},{"id":"180186","name":"optoelectronic device"},{"id":"180187","name":"Electron Affinity"},{"id":"180188","name":"excitonics"},{"id":"180189","name":"polaron"},{"id":"180190","name":"Quantum wells"},{"id":"180191","name":"electron hole"},{"id":"180192","name":"quasiparticles"},{"id":"180193","name":"binding energy"},{"id":"180194","name":"non-covalent"}],"core_research_areas":[{"id":"39451","name":"Electronics and Nanotechnology"},{"id":"39471","name":"Materials"}],"news_room_topics":[{"id":"71881","name":"Science and Technology"}],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMedia relations assistance\u003C\/strong\u003E: Ben Brumfield\u003C\/p\u003E\r\n\r\n\u003Cp\u003E(404) 660-1408\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Ca href=\u0022mailto:ben.brumfield@comm.gatech.edu?subject=Clownfish%20anemone%20story\u0022\u003Eben.brumfield@comm.gatech.edu\u003C\/a\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EResearch News\u003Cbr \/\u003E\r\nGeorgia Institute of Technology\u003Cbr \/\u003E\r\n177 North Avenue\u003Cbr \/\u003E\r\nAtlanta, Georgia\u0026nbsp; 30332-0181\u0026nbsp; USA\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EWriter:\u003C\/strong\u003E\u0026nbsp;Ben Brumfield\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}