18th Annual Nanoscience & Nanotechnology Forum – NanoDay! 10/25/17 – Keynote Speaker – William Buhro
18th Annual Nanoscience and Nanotechnology Forum
Wednesday, October 25, 2017
A yearly forum for faculty, postdocs, and students engaged in nanoscience and nanotechnology research.
SARRATT CINEMA
1:00 – 1:15 Welcome Sandra Rosenthal, Director of VINSE
1:15 – 1:30 Atomically thin nanoporous graphene membranes Piran Kidambi, Chemical and Biomolecular Engineering
1:30 – 1:45 Nanotechnology for the targeted therapy of disseminating tumor cells Michael King, Biomedical Engineering
1:45 – 2:00 Levitation of colloids in direct current electric fields Carlos Silvera Batista, Chemical and Biomolecular Engineering
2:00 – 2:15 Versatile nanoparticle manipulation with designer thermoplasmonic metasurface Justus Ndukaife, Electrical Engineering and Computer Science
2:15 – 2:30 Solution processed quantum dots for light emitting technologies Kemar Reid, Graduate Student – Interdisciplinary Materials Science
FEATHERINGILL HALL
2:30 – 3:15 POSTER SESSION
3:15 – 3:30 Next generation optical metamaterials Jason Valentine, Mechanical Engineering
3:30 – 3:45 Laser does matter Kalman Varga, Physics
3:45 – 4:00 Understanding colloidal materials for advanced processing of electrodes and solid conducting electrolytes Kelsey Hatzell, Mechanical Engineering
4:00 – 4:15 Novel materials and approaches for dynamic IR nano-optics Josh Caldwell, Mechanical Engineering
4:15 – 5:00 POSTER SESSION
5:10 – 6:00 KEYNOTE SPEAKER Colloidal semiconductor nanocrystals – shape matters William Buhro, Washington University in St. Louis
6:00 RECEPTION AND POSTER AWARDS
Abstract. The seminar provides a panoptic survey of the influence of nanocrystal morphology on quantum confinement in semiconductor nanocrystals. Nanocrystals that are small in all three geometric dimensions (quantum dots) exhibit 3D quantum confinement, whereas nanocrystals having one extended length dimension (quantum wires) or two extended length dimensions (quantum platelets, ribbons, or belts) exhibit 2D and 1D quantum confinement, respectively. The geometric dimensionality of confinement profoundly affects the energetics, spectroscopy, transport, and other properties of excitons generated in semiconductor nanocrystals. The story begins with the chance discovery of the solution-liquid-solid (SLS) growth of colloidal semiconductor nanowires, and continues with the unexpected templated synthesis of nanoribbons and nanoplatelets. The role of magic-size semiconductor nanoclusters in these syntheses, and the fascinating surface chemistry of flat colloidal nanocrystals will also be described.
Bio. Professor William E. Buhro earned an A.B. in Chemistry in 1980 at Hope College (Holland, Michigan) and a Ph.D. in Chemistry in 1985 at the University of California, Los Angeles. His dissertation research focused on organometallic chemistry. He was then awarded the first Chester Davis Research Fellowship at Indiana University, where he was a postdoctoral fellow from 1985-1987. In 1987 he joined the Department of Chemistry at Washington University as an assistant professor. Buhro twice received the Washington University Council of Arts and Sciences Faculty Award for Teaching (1990, 1996), the Emerson Electric Co. Excellence in Teaching Award (1996), and was named a National Science Foundation Presidential Young Investigator (1991-1996). In 2010 Buhro received the St. Louis Award from the ACS St. Louis Section, and was named a Fellow of the American Chemical Society. He is currently the George E. Pake Professor in Arts & Sciences, Chair of the Department of Chemistry, and an editor of the ACS journal Chemistry of Materials. His research interests in nanoscience include the synthesis of nanocrystalline materials, especially colloidal semiconductor quantum wires, ribbons, and platelets, the spectroscopic properties of quantum nanostructures, and mechanisms of nanocrystal growth.