个人简介

B.A., Rutgers University, 1978. Ph.D., Cornell University, 1983 (Michel J. Sienko). Postdoctoral Fellow, Cornell University, 1983-84 (M. J. Sienko). Honors and Appointments Mercator Fellow, Deutsch Forschungsgemeinschaft, 2012 Advisory Board, National Science Foundation IGERT Resource Center, 2008 Rosaria Haugland Foundation Chair in Pure and Applied Chemistry, 2007 Board Member, International Thermoelectric Society, 2006 Outstanding Scientist Award, Oregon Academy of Science, 2006 Solid State Chair, Division of Inorganic Chemistry, American Chemical Society, 2006 Solid State Chair elect, Division of Inorganic Chemistry, American Chemical Society, 2006 Faculty Co-Director, Oregon Nanoscience and Microtechnology Institute, 2004 Director of Educational Outreach, Materials Science Institute
, 2000-present Advisory Editor for Inorganic Chemistry, 1999-present Professor of Chemistry, University of Oregon, 1997-present Director, Materials Science Institute, University of Oregon, 1996-2000 Advisory Editor for Journal of Alloys and Compounds, 1994-present Treasurer, Materials Science Institute, University of Oregon, 1994-1996 Associate Professor, University of Oregon, 1992-1997 Office of Naval Research, Young Investigator Award, 1987-1990 Assistant Professor, University of Oregon, 1986-1993 Research Chemist, Dupont Central Research; Development Dept.,Wilmington, DE, 1984-1986 Postdoctoral Associate, Cornell University, Ithaca, New York, 1983-1984 NATO Exchange Fellow, Cambridge University, Cambridge, Great Britain, 1983 Graduate Research Assistant, Cornell University, Ithaca, New York, 1978-1983 Graduate with High Department Honors, Rutgers University, 1983 Henry Rutgers Undergraduate Research Scholar, 1977-1978 Summer Undergraduate Research Grant; FMC Corporation, 1977

研究领域

Environmental Chemistry/Inorganic/Organometallic Chemistry/Materials Chemistry/Physical Chemistry/Solid-State Chemistry/Surface & Interfacial Chemistry

Dave Johnson's research is at the interface of chemistry and physics and at the forefront of materials research. His group has pioneered a new approach to the synthesis of extended solids that permits them to prepare families of new nanostructured and kinetically stable compounds. The synthesis approach depends on controlling composition and diffusion lengths within a precursor that is designed to self-assemble into the desired new compound, as shown on the right. His group determines the crystal structures and measures the electrical and magnetic properties of these new compounds. By correlating structure with unusual physical properties and using their unique synthesis approach, Johnson's group is able to predict and then synthesize new compounds with unusual or unprecedented physical properties. [1] Johnson's groundbreaking, non-traditional approach to chemical synthesis has led to many new materials that have immediate practical applications. For example, his group discovered a new, turbostratically disordered form of tungsten diselenide with the lowest thermal conductivity ever reported for a dense solid (Ultralow Thermal Conductivity in Disordered, Layered WSe Crystals Catalin Chiritescu, David G. Cahill, Ngoc Nguyen, David Johnson, Arun Bodapati, Pawel Keblinski, and Paul Zschack, Science 19 January 2007 315: 351-353 [2] [3] [4]. His group determined that this material has an unprecedentedly small thermal conductivity because it is poised between a fully disordered material and a fully ordered crystalline lattice. This correlation between structure and property permitted Johnson's group to prepare many additional compounds with comparably small thermal conductivities. Johnson's synthesis approach is used to adjust the work function of metal contacts and to form phase change memory materials in the semiconductor industry. Johnson's research group benefits from collaborating with researchers at other institutions, who probe the physical properties and electronic structures of the new compounds they prepare. For example, the discovery and understanding of tungsten diselenide with the lowest thermal conductivity ever reported for a dense solid depended on thermal conductivity measurements by Professor Cahill's group at the University of Illinios, diffraction data and analysis done with Dr. Zschack of the Advanced Photon Source at Argonne National Laboratory, and calculations performed by Professor Keblinski of Rochester Institute of Technology. More recently, collaborations with the Franhofer Institute in Freiburg Germany have enabled Johnson's group to develop an equilibrium based approach to control the carrier concentration of nanostructured compounds.

近期论文

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Alemayehu, M. B.; Mitchson, G.; Ditto, J.; Hanken, B. E.; Asta, M.; Johnson, D. C., Charge Transfer between PbSe and NbSe2 in [(PbSe)1.14]m(NbSe2)1 Ferecrystalline Compounds. Chemistry of Materials 2014, 26, 1859-1866. http://dx.doi.org/10.1021/cm404018a Heideman, C.; Johnson, D. C., Structural influence on transport properties in [(PbSe) 1.00 ] m (MoSe 2 ) n misfit layered compounds. Semiconductor Science and Technology 2014, 29, 064007. http://dx.doi.org/10.1088/0268-1242/29/6/064007 Knutson, C. C.; Jackson, M. N.; Beekman, M.; Carnes, M. E.; Johnson, D. W.; Johnson, D. C.; Keszler, D. A., Mentoring Graduate Students in Research and Teaching by Utilizing Research as a Template. Journal of Chemical Education 2014, 91, 200-205. http://dx.doi.org/10.1021/ed400143a Atkins, R.; Dolgos, M.; Fiedler, A.; Grosse, C.; Fischer, S. F.; Rudin, S. P.; Johnson, D. C., Synthesis and Systematic Trends in Structure and Electrical Properties of [(SnSe)1.15]m(VSe2)1, m = 1, 2, 3, and 4. Chemistry of Materials 2014, 26, 2862-2872. http://dx.doi.org/10.1021/cm5004774 King, S. W.; Ross, L.; Li, H.; Xu, G.; Bielefeld, J.; Atkins, R. E.; Henneghan, P. D.; Davis, K.; Johnson, D. C.; Lanford, W. A., Influence of hydrogen content and network connectivity on the coefficient of thermal expansion and thermal stability for a-SiC:H thin films. Journal of Non-Crystalline Solids 2014, 389, 78-85. http://dx.doi.org/10.1016/j.jnoncrysol.2014.02.007 Ludemann, M.; Gordan, O. D.; Zahn, D. R. T.; Beekman, M.; Atkins, R.; Johnson, D. C., Raman spectroscopy insights into the size-induced structural transformation in SnSe nanolayers. Langmuir 2014, 30, 8209-8214. http://dx.doi.org/10.1021/la501722d Moore, D. B.; Beekman, M.; Disch, S.; Johnson, D. C., Telluride Misfit Layer Compounds: [(PbTe)1.17]m(TiTe2)n. Angewandte Chemie 2014, 53, 5672-5675. http://dx.doi.org/10.1002/ange.201401022 Westover, R. D.; Atkins, R.; Ditto, J.; Johnson, D. C., Synthesis of (SnSe)1.16-1.09(Nbx,Mo1-x)Se2 Ferecrystal Alloys. Chemistry of Materials 2014, 26, 3443-3449. http://dx.doi.org/10.1021/cm500720x