User:Vanimurarka/Vinod Tewary
Vinod Tewary | |
|---|---|
| Born | 1940 |
| Alma mater | University of Lucknow (B.S. and M.S., Physics) Delhi University (Ph.D., Solid-state Physics) |
| Known for | Tewary method: Green's function for lattice statics, Multiscale Green's function, Causal GF in molecular dynamics |
| Scientific career | |
| Fields | Physics, Materials science, Solid-state physics, Nanomaterials |
| Institutions | National Institute of Standards and Technology |
| Doctoral advisor | (Late) Prof. F.C. Auluck, (Late) Prof. L.S. Kothari |
Vinod Tewary (born 1940) is an Indian American theoretical physicist at NIST (National Institute of Standards and Technology)[1]. Dr Tewary’s field of research is theoretical solid-state physics, with specialization in nanomaterials. He is the originator of the Tewary method for lattice statics[2], the Multiscale GF (MSGF) method [3], and the CGFMD (causal GF in molecular dynamics)[4]. These methods are used in the mathematical modeling of nanomaterials.
Additionally, Vinod Tewary is a published Hindi author.
Early life and education
[edit]Vinod Tewary was born in Hardoi, U.P., India, where he received his early education. He earned his B.Sc. and M.Sc. (Physics) degrees from the University of Lucknow (India), and his Ph.D. in Solid State Physics from the University of Delhi (India).
Career
[edit]• Theoretical Physicist, Applied Chemicals and Materials Division, NIST Boulder
• Adjunct Professor at the Ohio State University, Columbus (on contract to NIST, Gaithersburg and Boulder)
• Professor of Physics and Dean of Research at Birla Institute of Technology and Science, Pilani, India
• Physicist at the Atomic Energy Research Establishment, Harwell, UK
• Research Fellow at the University of Reading, UK
• Research Fellow at the Indian Institute of Technology, Kanpur.
Main Research
[edit]1. Lattice statics GF (LSGF):[2] A technique for atomistic scale (few Angstroms) modeling of the static processes in crystals containing lattice defects. The atomistic scale modeling is needed because the conventional continuum models are not meant for simulating the physical processes in crystals near lattice defects, where the discrete atomistic effects are important. The LSGF technique is also referred to as the Tewary method. It was first referred as the Tewary method in 1973. [5][6]
2. Multiscale GF (MSGF): [3] for modeling modern nanomaterials. It is essentially a generalized version of LSGF and is valid at different length scales in crystals. It is specifically applicable to modern nanomaterials. A mathematical model for interpretation of data on nanomaterials must be multiscale because the atomistic scale effects are crucial at nanoscales, whereas the measurements are made at macroscales. The MSGF method links the atomistic scales to macroscales seamlessly.
3. Causal GF in molecular dynamics (CGFMD) for modeling time-dependent processes, that can link multiple temporal scales from femtoseconds to nanoseconds, and even microseconds[4]. It is a further extension of the MSGF method to incorporate the temporal effects. The temporal effects are needed for interpreting data in technological applications such as materials for storage batteries, thermoelectric devices, strong materials, radiation damage, etc. For example, in radiation damage in material systems used in space vehicles, the primary event consists of a high energy gamma photon hitting and displacing an atom in a solid. The secondary event consists of the displaced atom hitting and displacing other atoms, which in turn displace even more atoms in the solid. This cascade process causes a lot of damage to the material and make it unstable and unusable to carry any load. The primary event lasts for a few femtoseconds, whereas the secondary events may extend up to several microseconds. In order to understand the nature and extent of the damage and to design safe material systems, it is needed to simulate this process over multiple time scales ranging from femto to microseconds. The CGFMD technique is useful for such calculations. This research was reported in the Phys.org publication.[7]
Publications
[edit]A. Research Papers[8]
B. Technical Books
• V.K. Tewary and Y. Zhang; “Modeling, characterization, and production of nanomaterials” (Elsevier, Amsterdam 2015) Edited book.
• V.K. Tewary; “Mechanics of Fiber Composites” (John Wiley, New York) 1979
C. A collection of Tewary’s Hindi poems “Samarpit Satya Samarpit Swapna” (Published by Kaavyaalaya, Kolkata, India) 2020
Awards and Honors
[edit]Distinguished Fellow elected by ICCES (International Conference on Computational Engineering and Sciences), at Madeira, Portugal (2017) for “seminal contributions to time domain Green functions and molecular mechanics.”
Lifetime Achievement Medal by ICCES (International Conference on Computational Engineering and Sciences) at Seattle, USA (2013) for “Multiscale Green’s functions”[9].
Eric Reissner Medal by ICCES (International Conference on Computational Engineering and Sciences), 2004; For work on “Multiscale Modeling in Physics and Mechanics.”
Bronze Medal; NIST (Department of Commerce, US Govt); 1996; For “Innovative Research and Technical leadership.”
Multicultural Award; Boulder County, CO; 1994; For “Excellence in Sciences.”
Pride of India Award; Swamy Narayan Sanstha (India); 1992; For “Distinguished Contributions to Applied Sciences.”
Other recognitions: Two issues of the journal Computers, Materials & Continua (Tech Science Publication) published in “-- honor of Dr Vinod Tewary”: “Special issues on Nanomaterial Systems: Structures and Processes” Volume 38, Numbers 1 and 2 (2013).
Professional Associations
[edit]• Harwell-Wolfson Fellow of the Wolfson College, Oxford University, UK, 1981.
• Elected Fellow of the Institute of Physics, UK, 1974.
• Associate of the International Center for Theoretical Physics, Trieste, Italy,1974
References
[edit]- ^ "Vinod Tewary". NIST. 9 October 2019.
- ^ a b Tewary, V.K. (November 1973). "Green-function method for lattice statics". Advances in Physics. 22 (6): 757–810. doi:10.1080/00018737300101389.
- ^ a b Tewary, V.K. (2015). "Multiscale Green's functions for modeling of nanomaterials*". Modeling, Characterization, and Production of Nanomaterials: 55–85. doi:10.1016/B978-1-78242-228-0.00002-8.
- ^ a b Tewary, V. K. (22 October 2009). "Extending the time scale in molecular dynamics simulations: Propagation of ripples in graphene". Physical Review B. 80 (16): 161409. doi:10.1103/PhysRevB.80.161409.
- ^ Ben-Abraham, S. I.; Rabinovitch, A.; Pelleg, J. (1 December 1977). "Relations between vacancy migration and formation energies, debye temperature and melting point". Physica Status Solidi (b). 84 (2): 435–441. doi:10.1002/pssb.2220840205.
- ^ Glass, N E; Boffi, S; Bilello, J C (14 July 1977). "Inelastic neutron scattering from screw dislocations". Journal of Physics C: Solid State Physics. 10 (13): 2307–2319. doi:10.1088/0022-3719/10/13/007.
- ^ "Capturing those in-between moments: Researchers solves timing problem in molecular modeling". phys.org.
- ^ "Vinod K Tewary". scholar.google.com.
- ^ "2013 ICCES Lifetime Achievement Medal - Vinod Tewary". NIST. 24 May 2013.