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Manipulating phonons and electrons in two-dimensional materials
Two-dimensional (2D) materials are one or few atoms thick layered materials. The
interaction between the layers in their parent three-dimensional material is weak. Therefore,
one can stack different 2D materials on top ...
Investigation of quantum interference and quantum oscillations in 3D topological insulators
The investigations on the topological phase of the matter first started with the experimental discovery of the quantum Hall effect (QHE) back in 1980. The experimental discovery of the quantum spin Hall effect (QSHE) was ...
Tenfold Classification for Interacting Fermions and Relation with Homogeneous Spaces
Topological classifi cation of topological insulator superconductor, various quantum Hall states
are probably the most discussed topic in theoretical quantum condensed matter community as
well as many mathematicians ...
Conductance Fluctuations in High-mobility Graphene Field Effect Transistors
In the past decade, a major fraction of the research carried out in condensed matter physics has been dedicated to address the
unique physical properties of single layer graphene (SLG). Different properties of Dirac ...
Raman Study of gated devices in two-dimensional materials and pressure effects
This thesis presents Raman study of 2D materials of contemporary interests: 2H-MoTe_2, type-II Weyl semimetal (T_d-MoTe_2), structurally anisotropic semiconductors (1T'-ReX_2 (X=S, Se)) and Mott insulator (FePS_3) under ...
Study of light-matter interactions in ultra-low noise graphene-based van der Waals hybrid
The vast array of optical and electrical capabilities of graphene (Gr) and analogous
two dimensional (2D) van der Waals (vdW) materials have piqued scientists’ interest for
long. Stacking these materials to form hybrid ...
Exploring carrier dynamics in van-der-Waals heterostructures with shot noise spectroscopy, thermoelectricity and opto-electronic study
In the last two decades, there has been tremendous progress in two-dimensional (2D) - material research. It is mainly
due to the availability of a large selection of 2D-materials and their van-der-Waals heterostructures. ...
A Platform for Handheld Ultrafast PCR
The Polymerase Chain Reaction (PCR) is one of the most sensitive and specific diagnostic tools available today. Yet, it stands out of reach for many vulnerable populations because commercial solutions are expensive, bulky, ...
Non-Equilibrium Phenomena in Sheared Soft Matter and Active Granular System
In this thesis, we have studied non-equilibrium phenomena in sheared soft matter systems and in granular active matter. The surfactant systems are driven out of thermal equilibrium by applying external forcing at the ...
Raman Spectroscopy Of Graphene And Graphene Analogue MoS2 Transistors
(2016-06-18)
The thesis presents experimental studies of device characteristics and vibrational properties of atomic layer thin graphene and molybdenum disulphide (MoS2). We carried out Raman spectroscopic studies on field effect ...