- PhD, Stanford University, 1980
- MA, Columbia University, 1977
- MSc, Indian Institute of Technology, 1976
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.
Regmi, Z. Li, A. Srivastava, R. Mahat, S. KC, A. Rastogi, Z. Galazka, R. Datta, T. Mewes, and A. Gupta, “Structural and Magnetic Properties of NiFe2O4 Thin Films Grown on Isostructural Lattice-matched Substrates,” Appl. Phys. Lett. 118, 152402 (2021).
Palchoudhury, K. Ramasamy and A. Gupta, “Multinary Copper-based Chalcogenide Nanocrystal Systems from the Perspective of Device Applications,” Nanoscale Adv. 2, 3069 (2020).
Naghibolashrafi, V. I. Hegde, S. KC, S. Keshavarz Shahvarani, S. Naghavi, J. Ma, A. Gupta, P. LeClair, W. H. Butler, C. Wolverton, K. Munira, D. Mazumdar, and A. W. Ghosh, “Structural and Magnetic Analyses of the FexCo1-xTiSb alloy system: Fe0:5Co0:5TiSb as a Prototypical Half-Heusler Compound,” J. Alloys and Compounds 822, 153408 (2020).
Pang, A. Srivastava, M. Lockart, T. Mewes, M. K. Bowman, N. Bao, L. Shen, and A. Gupta, “Magnetic Properties of Semiconducting Spinel CdCr2S4 Nanostructured Films Grown by Low-Pressure Metal–Organic Chemical Vapor Deposition,” ACS Applied Electronic Materials 1, 1424 (2019).
Zhou, A. V. Singh, Z. Li, M. A. Popov, D. A. Filippov, T. Zhang, P. J. Shah, B. M. Howe, M. E. McConney, G. Srinivasan, M. R. Page, and A. Gupta, “Magneto-Electric Interactions in Composites of Ferrite Films on Lattice-Matched Substrates and Ferroelectrics,” Phys. Rev. Appl. 11, 054045 (2019).
Kataria, K. Sethuraman, D. Vashisht, A. Vashisht, S. K. Mehta, and A. Gupta, “Colorimetric detection of mercury ions based on anti-aggregation of gold nanoparticles using 3, 5-dimethyl-1-thiocarboxamidepyrazole,” Microchemical Journal 148, 299 (2019).
Yengantiwar, P. S. Shinde, S. Pan, and A. Gupta, “Delafossite CuFeO2 Photocathodes Grown by Direct Liquid Injection Chemical Vapor Deposition for Efficient Photoelectrochemical Water Reduction,” J. Electrochem. Soc. 165, H831 (2018).
Pang, L. Gao, A. V. Singh, H. Chen, M. K. Bowman, N. Bao, L. Shen, and A. Gupta, “Synthesis, Formation Mechanism, and Magnetic Properties of Monodisperse Semiconducting Spinel CdCr2S4 Nanocrystals via a Facile “Seed-mediated” Growth Method,” Chem. Mater. 30, 1701 (2018).
Zhou, G. J. Bedwell, R. Li, S. Palchoudhury, P. E. Prevelige, and A. Gupta, “Pathways for Gold Nucleation and Growth over Protein Cages,” Langmuir 33, 5925 (2017).
V. Singh, B. Khodaddadi, J. B. Mohammadi, S. Keshavarz, T. Mewes, D. S. Negi, R. Datta, Z. Galazka, R. Uecker,and A. Gupta, “Bulk Single Crystal-Like Structural and Magnetic Characteristics of Epitaxial Spinel Ferrite Thin Films with Elimination of Antiphase Boundaries,” Adv. Mat. 29, 1701222 (2017).