Transparent wood composites have high strength, toughness, thermal insulation, and excellent transmissivity, and offer a route to replace glass for diffusely transmitting windows. STAMI-GTPN and -COPE Professor John Reynolds' group has used conjugated-polymer-based electrochromic materials and transparent wood to create devices that switch on-demand. The devices exhibit a vibrant magenta-to-clear color change that results from a remarkably colorless bleached state. Published in Chemistry and Sustainability (ChemSusChem).
The Group of STAMI-COPE Professor Bernard Kippelen may have addressed the most significant obstacle to expanding the use of organic semiconductors for thin-film transistors (OFETs) by using a nanostructured gate dielectric. The structure, composed of a fluoropolymer layer and a nanolaminate made from two metal oxide materials serves as a gate dielectric and simultaneously protects the organic semiconductor. The nanostructured gate dielectric enables OFETS to operate with unprecedented stability. Click here for more information.
STAMI held its inaugural Industrial Partners Day and Exposition on October 19th-20th at Geogria Tech's Historic Academy of Medicine in Midtown Atlanta. The event was attended by over 20 different companies interested in advanced materials and interfaces and by over 150 Georgia Tech faculty, students, and researchers from a variety of schools within the College of Engineering and the College of Science. Professor George M. Whitesides from Harvard University delivered the Keynote Address while both Georgia Tech faculty and Industrial speakers participated in presentations and networking opportunties.
GTPN-COPE researchers have microfluidically prepared microcapsules with of a fluidic photon upconverting core and photonic shell from a triple emulsion as a template. The achievable dimensions and compositional flexibility of the upconverting core and photonic shell suggest a range of opportunities the future design of low-threshold photonic devices.
Soft Matter Incubator (SMI) researcher Prof. Elisabetta Matsumoto is part of a team of researchers that is helping bring hyperbolic space to anyone with a virtual reality (VR) headset. The effort is designed to allow users to experience non-Euclidean spaces in which parallel lines diverge (hyperbolic space) that can be difficult to fully imagine with purely mathematical considerations. The research was recently part of the News in Focus in Nature. Find out more here.
Soft Matter Incubator (SMI) researchers have created water-filled particles known as microgels within robust polymer networks made of natural fibrin. In a remarkably dynamic process, the microgels self-assemble into three-dimensional tunnel-like structures that could allow repair cells to migrate through the polymer network to begin the healing process.
STAMI has awarded 2017 Seed Grants to Georgia Tech researchers that are members of the Community for Research on Active Surfaces and Interfaces (CRĀSI) and the Soft Matter Incubator (SMI). Proposals were selected on a competitive basis. The 2017 CRĀSI seed grant program sought innovative proposals addressing fundamental scientific questions pertaining to surfaces and interfaces, and two collaborative proposals were selected. The 2017 SMI seed grant program sought proposals addressing questions pertaining to fundamental soft matter, and three collaborative proposals were selected. Learn more.
Professor Seth Marder, from the Georgia Tech Schools of Chemistry and Biochemistry and Materials Science and Engineering, has been elected as a Fellow of the National Academy of Inventors (NAI). According to the NAI, "Election to NAI Fellow status is the highest professional distinction accorded solely to academic inventors who have demonstrated a prolific spirit of innovation in creating or facilitating outstanding inventions that have made a tangible impact on quality of life, economic development, and welfare of society." Professor Marder is the first NAI fellow from the Georgia Tech College of Sciences. Read more here.
Single-walled carbon nanotubes (SWCNTs) were n-doped in thin-film transistors with a solution-processed pentamethylrhodocene dimer. The charge transport properties of organorhodium-treated SWCNT thin films show consistent n-type behavior when characterized in both Hall effect and thin-film transistor geometries.
Modification of the TCO surface with a redox-active surface modifier is a possible approach toward enhancing OPV efficiency by providing an efficient charge-transfer pathway between either hole- or electron-harvesting contacts and the organic active layer. Two different deposition techniques were used with perylene diimide (PDI) surface modifiers in the study: adsorption from solution (SA) and spin coating (SC), to create three types of monolayer films on ITO: SA PDI–phenyl–PA, SA PDI–diphenyl–PA, and SC PDI–phenyl–PA. These thin films, designed to act as “charge-transfer mediators”, were used to study relationships between molecular structure, electron-transfer (ET) kinetics, and electronic structure.