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Ph.D. from Centre for Nano and Soft Matter Sciences
Tel.: +91 (0)80 2293 2059
Two dimensional (2D) materials in general have unique properties when compared to their bulk counterparts, whether the material is a molecular monolayer or a single layer of graphene. My research interest lies in understanding these 2D materials at various interfaces.
I am a trained experimental physicist in the field of soft matter physics that deals with formation and characterisation of monolayers and multilayers of organic thin films at interfaces. Liquid crystals (LCs) have made enormous contributions to the field of display technology as well as micro-electronics. Our interest was to explore some of the well known LCs in the form of monolayer and multilayers to find suitable applications in micro-electronics. In particular, studying rod like n-alkyl cyanobiphenyls and polymers of disc shaped LCs for their phase transition in monolayers at air-water interface and the charge transport studies across the monolayers at air-solid interface. We have also explored the dynamics of wetting and dewetting in nematic micro domains, which can help in understanding emulsions, recovery in oil spillage and so on.
My other area of research interest is in the field of inorganic two-dimensional materials. We are carrying out liquid exfoliation of two-dimensional materials like BN and study their effects in polymer composites.
Phone: +91 (0)80 2293 2059
Ph.D.: Bio-Nano Science Fusion (Oct 2011 – Sep 2014), Graduate School of
Interdisciplinary New Science, Toyo University, Japan.
Post-Doctoral Fellow, (Oct 2014 – Jul 2018), Bio-Nano Electronics Research Centre,
Toyo University, Japan.
Research Assistant (2011 – 2014), Bio-Nano Electronics Research Centre, Toyo
Project Assistant (2009 – 2011), National Physical Laboratory-CSIR, Delhi, India.
For pushing miniaturization limits of optical and electronic devices, it is extremely important
to achieve nanometric precision control over placement of single and multiple nanoparticles
at selective areas on a given substrate. My current research is focused on developing a novel
way for building single and multi-component devices that may have interesting emergent
optical and electronic properties.
My core research interests involve large-scale synthesis, directed assembly and advanced
characterization of 2D nanomaterials with specific application areas in multifunctional
nanocomposites, flexible-electronics, optoelectronics and sensor technologies.
Tel.: +91 (0)80 2293 2059
Electrical transport across rectifying metal-semiconductor interface, Noise and fluctuations in electrical characteristics of Schottky diodes, Surface modification of semiconductors for resolving issues due to defect-related surface states and charged surface states, Optoelectronics of wide bandgap semiconductor material, Straintronics in two-dimensional layered materials, Thermal transport in twisted two-dimensional materials
Current Research Area:
The discovery of the unusually high thermal conductivity, , of graphene and the unique nature of its value scaling with the thickness in suspended few-layer graphene have encouraged different experimental and theoretical investigations. The developing thermal field of graphene makes it a potential candidate for being used as thermal interface material, thermal phase change material and heat spreader. However, it is interesting to understand how the thermal conductivity will be effected by rotating the atomic planes in twisted bilayer graphene structures (t-BLG). Will the main heat carriers in t-BLG behave in the same way as in single layer graphene? Will extraordinary heat flux be observed via stacks of t-BLG structures or heat conduction will be suppressed in the weakly bound twisted atomic planes? What mechanisms would be responsible for the either case! In order to answer these questions, my current research work is focused on analysing the thermal transport in low-angle twisted bilayer graphene structures, both fundamentally and practically.
Phone: +91 (0)80 2293 2059
Web: ResearchGate Profile
M.Sc: Dept. of Physics, Indian Institute of Technology, Madras.
Ph.D: Dept. of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata.
Currently, my research focuses on probing opto-electronic properties of twisted bilayer van der Waals heterostructures. Recent theoretical studies have predicted that the electronic band structure of two-dimensional materials modify with twist angle between the layers leading to emergent phenomenon such as superconductivity, Mott insulating states etc. The Moire pattern formed between the monolayers leads to a periodically modulated Moire potential, that can strongly modify optical properties. It will be exciting to probe and understand the inter-layer excitonic properties in a Moire superlattice through opto-electronic and transport studies.
During my doctoral thesis, I worked on transport properties of single semiconductor nanowires, particularly Germanium. My work involved growth, characterization and fabrication of single nanowire devices for low temperature electrical and opto-electronic studies.
Ph.D. (Nanoscience and Nanotechnology): S. N. Bose National Centre for Basic Sciences
M.Sc. (Physics): Indian Institute of Technology Madras
B.Sc. (Physics): Ramakrishna Mission Vidyamandira (University of Calcutta)
Currently, my research focuses on the synthesis and structural analysis of the bimetallic gold-silver hybrid system. Recent studies have indicated that there is a possibility of resistance drop in the hybrid Au/Ag system. However, the exact structural identification is still not clear. My present research will be to probe the structural analysis of the bimetallic Au/Ag structure and investigate its electrical properties.
During my doctoral training, I worked on the synthesis, application, and computational investigation of various oxide-based nanohybrid. My work involved the development of hybrid nanomaterials for manifold applications. Besides I have done DFT-based computational analysis of the hybrid systems and topological systems to investigate their electronic properties.