Dr. Ashutosh Tiwari
Research Associate/ Senior Researcher
NSF Center for Advanced Materials and Smart Structures
Department of Materials Science & Engineering
North Carolina State University
Raleigh, NC 27695-7916
Education:
Ph.D. 2000 Solid State Physics & Materials Science Indian
Institute of Technology, Kanpur
M.Sc. 1993 Physics, Indian Institute of Technology, Delhi
B.Sc. 1990 Physics (Hons.), Christ Church College, Kanpur
Awards and Honors:
- Principal Organizor of 2004
TMS symposium on "Nanostructured Magnetic Materials"
- Special Issue Editor of Journal of Electronic Materials
(November, 2004 issue)
- TMS 2003 Young Leader
Award
- 1999 Post-doctoral Fellowship of University of Delaware,
USA
- 1994 Research Fellowship of Council of Scientific and
Industrial Research of India
- 1994 Qualified the prestigious GATE (Graduate
Aptitude Test for Engineers) examination of Indian Institute of
Technology.
- 1992-94 Qualified NET (National Eligibility Test) for
Lecturer ship
- 1985-1990 Recipient of National Merit Scholarship of
government of India
Membership:
- American Physical Society
- Electrochemical Society
- Materials Research Society
- Newyork Academy of Sciences
- The Minerals, Metals and Materials
Society (TMS)
Research Interest:
Low temperature electrical, magnetic and thermodynanic properties of
transition metal perovskite oxides; Superconductors and Giant
magnetoresistive materials; Wide band gap II-VI and III-V
semiconductors; Transparent conductors; Disordered metallic systems;
Metal-insulator transition; Thin film deposition and processing; Laser
ablation; Sputtering; Thermal & e-beam evaporation, Transmission
electron microscopy, etc
Teaching Interest:
Electricity, Magnetism and magnetic materials, Modern Phsics, Optics,
Fundamentals of thin film growth, Advanced materials processing,
Structural characterization techniques, Low-temperature techniques,
Theromdynamics, etc
Skills:
- Expert in Photolithography and
thin film preparation using Pulsed Laser Deposition and Magnetron
Sputtering
- Expert in domain epitaxy thin film
growth technique and mechanism
- Expert in thin film
characterization using X-ray diffraction, Transmission Electron
Microscopy (TEM), Scanning Electron Microscopy, Rutherford back
scattering, Atomic Force Microscopy (AFM) and Nanoindentation techniques
- Low temperature measurements of
transport and magnetotransport properties of bulk and thin film samples
- Electron tunneling conductance
measurements
- Measurement of Magnetization using
Vibrating Sample Magnetometer (VSM), Faraday Balance and Squid
Magnetometer
- Design and construction of 3He and
4He cryostats
- Handling of ultra high vacuum
(UHV)
systems
- Extensive research on wide
band-gap
II-VI and III-V semiconductors
- Experience in Photoluminescence,
Raman and Infrared spectroscopy
- Expertise in electrical and
magnetic characterization of thin film and bulk materials
- Expertise in automation and
computer Interfacing of instruements
- Statistical Analysis of data
Work Experience:
2001-present: Research Associate, Center for Advanced Materials
and Smart Structures, North Carolina State University, Raleigh
1999-2001: Post-doctoral Fellow, Department of Physics and
Astronomy, University of Delaware, Newak
1993-1999: Research Assistant, Department of Physics, Indian
Institute of Technology, Kanpur
Publications: Published
more than 50 papers in reputed international journals and conferences
Ten Recent Selected Publications:
- Tiwari A, Chugh A, Jin C, et al.,
"Role of self-assembled gold nanodots in improving the
electrical and optical characteristics of zinc oxide films" Journal of
Nanoscience and Nanotechnology 3, 368-371, 2003
- Ashutosh Tiwari et al., “Rectifying
electrical characteristics of ZnO/La0.7Ca0.3MnO3 heterostructure ”
Applied Physics Letters 83,
1773, 2003.
- Wang H, Zhang X, Gupta A, Ashutosh Tiwari and J Narayan
"Growth and characteristics of TaN/TiN superlattice structures" Applied
Physics Letters 83,
3072-3074,2003
- Ashutosh Tiwari, J. Narayan,
C. Jin and A. Kvit " Growth of Epitaxial NdNiO3 and Integration with
Si(100)" Applied physics letters, 80, 1337, 2002
- Ashutosh Tiwari, C. Jin and
J. Narayan "Stress induced tuning of metal-insulator transition in
NdNiO3 films" Applied Physics Letters, May 20,2002
- Ashutosh Tiwari, K. P. Rajeev
and J. Narayan "Low temperature electrical transport in La1-xNdXNiO3"
Solid State Communications 121, 357, 2002
- H. Wang, Ashutosh Tiwari, A.
Kvit, X. Zhang and J. Narayan " Epitaxial growth of TaN films on
Si(100)
and (111)" Applied physics letters 80, 2323, 2002
- H. Wang, Ashutosh Tiwari, A.
Kvit, X. Zhang and J. Narayan "Copper diffusion characteristics in
single-crystal and polycrystalline TaN" Applied physics letters 81, 2002
- Ashutosh Tiwari, C. Jin, A.
Kvit, D. Kumar, J. F. Muth, J. Narayan "Structural, optical and
magnetic properties of diluted magnetic semiconducting Zn1-xMnxO films"
Solid State Communications 121, 371, 2002
- Ashutosh Tiwari and K. P.
Rajeev " Electron tunneling experiments on La0.7A0.3MnO3 (A=Ca, Sr,
Ba)" Physical Review B 60, 10591, 1999
- Ashutosh Tiwari and K. P.
Rajeev "Electrical transport in LaNiO3-d" Journal of Physics:Condensed
Matter 11, 3291,1999
- Ashutosh Tiwari and K. P.
Rajeev " Effect of oxygen stoichiometry on the electrical resistivity
behaviour of NdNiO3-d" Solid State Communications 109, 119, 1999