Gupta, Arunava - The University of Alabama

个人简介

Education: Master's Degree M.Sc.,1976, Indian Institute of Technology; M.A., 1977, Columbia University Education: Doctoral Degree Ph.D., 1980, Stanford University

研究领域

Investigation of nanostructured materials, with emphasis on the controlled fabrication and synthesis of novel structures, manipulating and probing their surface and interface properties, and exploring potential applications. Implementation of a multidisciplinary approach, interfacing chemistry, materials science, physics and biology. Materials for information technology, in particular spintronics (spin-based electronics). Traditional semi-conductor devices rely on the transport and storage of electronic charge. Spintronics exploits electron spin, creating a new class of devices that can potentially be scaled down to nano-dimensions and can also provide additional functionality. Research goals include: 1) thin film growth utilizing a variety of deposition techniques, including chemical vapor deposition, pulsed laser deposition and sputtering; 2) utilization of a combinatorial approach for depositing and characterizing these films where possible to enable rapid screening of a wide variety of materials; 3) synthesis and characteriza-tion of novel magnetic thin films and heterostructures, in particular oxides, with atomic layer control of the interfaces; 4) fabrication of devices, such as magnetic tunnel junctions and spin-based semiconductors, using these materials for storage, memory and logic functions. Nanostructured materials for biomedical applications, with emphasis on magnetic oxides. Magnetic nanoparticles represent an extremely interesting group of inorganic materials having a close connection to living systems. They offer exciting possibilities for use in the detection, manipulation and functional control of biomolecules and cells, with potential medical applications in areas such as targeted drug delivery, magnetic fluid hyperthermia and contrast imaging. Research goals emphasize the development of: 1) novel synthetic strategies for the production of various shape nanostructures, including particles, wires, tubes or ribbons; 2) subsequent modification of their surface with coatings to render them biocompatible and enable selective surface immobilization of bioactive molecules.

近期论文

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K. Ramasamy, R. K. Gupta, S. Palchoudhury, S. Ivanov, and A. Gupta, “Layer-Structured Copper Antimony ChalcogenidesÂ (CuSbSexS2-x): Stable Electrode Materials for Supercapacitors”, Chem. Mater. 27, 379 (2015). G. J. Bedwell, Z. Zhou, M. Uchida, T. Douglas, A. Gupta, and P. E. Prevelige, Jr., “Selective Biotemplated Synthesis of TiO2 Inside a Protein Cage”, Biomacromolecules 16, 214 (2015). Z. Zhou, G.J. Bedwell, R. Li, N. Bao, P. E. Prevelige, and A. Gupta, “P22 Virus-like Particles Constructed Au/CdS Plasmonic Photocatalytic Nanostructures for Enhanced Photoactivity”, Chem. Commun. 51, 1062 (2015). P. S. Archana, A. Gupta, M. M. Yusoff, and R. Jose, “Charge Transport in Zirconium Doped Anatase Nanowires Dye-Sensitized Solar Cells: Trade-off between Lattice Strain and Photovoltaic Parameters”, Appl. Phys. Lett. 105, 153901 (2014). K. Dileep, B. Loukya, R. Datta, N. Pachauri, and A. Gupta, “Probing Optical Band Gaps at the Nanoscale in NiFe2O4 and CoFe2O4 Epitaxial Films by High Resolution Electron Energy Loss Spectroscopy”, J. Appl. Phys. 116, 103505 (2014). K. Dileep, L. Chowdary, P. Silwal, A. Gupta, and R. Datta, “Probing Optical Band Gaps at Nanoscale from Tetrahedral Cation Vacancy Defects and Variation of Cation Ordering in NiCo2O4 Epitaxial Thin Films”, J. Phys. D:Appl. Phys. 47, 405001(2014). X. Wang, C. Zha, C. Ji, X. Zhang, L. Shen, Y. Wang, A. Gupta, S. Yoriya, and N. Bao, “Synthesis of Highly Ordered TiO2 Nanotube Arrays with Tunable Sizes”, Mater. Res. Express 1, 035031 (2014). A. I. Pankrats, A. M. Vorotynov, V. I. Tugarinov, S. M. Zharkov, D. A.Velikanov, G. M. Abramova, G.M. Zeer, K. Ramasamy, and A. Gupta “Structural and Magnetic Resonance Investigations of CuCr2S4 Nanoclusters and Nanocrystals”, J. Appl. Phys. 116, 054302 (2014). Â Z. Shan, D. Clayton, S. Pan, P. S. Archana, and A. Gupta, “Visible Light Driven Photoelectrochemical Properties of Ti@TiO2 Nanowire Electrodes Sensitized with Core-Shell Ag@Ag2S Nanoparticles”, J. Phys. Chem. B 118, 14037 (2014). X. Zhang, G. Guo, C. Ji, K. Huang, C. Zha, L. Shen, Y. Wang, A. Gupta, and N. Bao “Efficient Thermolysis Route to Monodisperse Cu2ZnSnS4 Nanocrystals with Controlled Shape and Structure”, Nature Sci. Rep. 4, 5086 (2014). K. Ramasamy, H. Sims, W. H. Butler, and A. Gupta, “Selective Nanocrystal Synthesis and Calculated Electronic Structure of All Four Phases of Copper-Antimony-Sulfide”, Chem. Mat. 26, 2891 (2014). C. Klewe, M. Meinert, A. Boehnke, K. Kuepper, E. Arenholz, A. Gupta, J.-M. Schmalhorst, T. Kuschel, and G. Reiss, “Physical Characteristics and Cation Distribution of NiFe2O4 Thin Films with High Resistivity Prepared by Reactive Co-sputtering”, J. Appl. Phys. 115, 123903 (2014). K. Ramasamy, B. Tien, P. S. Archana, and A. Gupta, “Copper Antimony Sulfide (CuSbS2) Mesocrystals: A Potential Counter Electrode Material for Dye-Sensitized Solar Cells”, Mater. Lett. 124, 227 (2014). P. S. Archana, A. Gupta, M. M. Yusoff, and R. Jose, “Tungsten Doped Titanium Dioxide Nanowires for High Efficiency Dye-Sensitized Solar Cells”, J. Phys. Chem. Phys. 16, 7448Â (2014). C. Ji, D. He, L. Shen, X. Zhang, Y. Wang, A. Gupta, K. Yanagisawa, and N. Bao, “A Facile Green Chemistry Route to Porous Silica Foams”, Mater. Lett. 119, 60 (2014). K. Ramasamy, H. Sims, W. H. Butler, and A. Gupta, “Mono-, Few- and Multiple Layers of Copper Antimony Sulfide (CuSbS2): A Ternary Layered Sulfide”, J. Am. Chem. Soc. 136, 1587 (2014). Z. Zhou, G. J. Bedwell, R. Li, P. E. Prevelige, and A. Gupta, “Formation Mechanism of Chalcogenide Nanocrystals Confined Inside Genetically Engineered Virus-like Particles”, Nature Sci. Rep. 4, 3832 (2014). L. Shen, M. Althammer, N. Pachauri, B. Loukya, R. Datta, M. Iliev, N. Bao, and A. Gupta, “Epitaxial Growth of Spinel Cobalt Ferrite Films on MgAl2O4 Substrates by Direct Liquid Injection Chemical Vapor Deposition”, J. Cryst. Growth 390, 61 (2014). C. Zha, L. Shen, X. Zhang, Y. Wang, B. A. Korgel, A. Gupta, and N. Bao, “Double-sided Brush-shaped TiO2 Nanostructure Assemblies with Highly-ordered Nanowires for Dye-sensitized Solar Cells”, ACS Appl. Mater. Interfaces 6, 122 (2014). D. S. Negi, B. Loukya, K. Dileep, R. Sahu, S. Shetty, N. Kumar, J. Ghatak, N. Pachauri, A. Gupta, and R. Datta, “Structural and Magnetic Characterization of Mixed Valence Co (II, III)xZn1-xO Single Crystal Thin Films”, J. Magn. Magn. Mat. 354, 39 (2014).