Browsing Physics (PHY) by Title
Now showing items 290-309 of 482
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Phenomenological Theory Of Superconductivity And Low-Energy Electronic Spectra In The High-Tc Cuprates
(2013-09-11)Condensed matter physics is a rapidly evolving field of research enriched with the synthesis of new materials exhibiting a bewildering variety of phenomena and advances in experimental techniques. Over the years, discoveries ... -
Phonon Anomalies And Phase Transitions In Pyrochlore Titanates, Boron Nitride Nanotubes And Multiferroic BiFeO3 : Temperature- And Pressure-Dependent Raman Studies
(2013-09-13)This thesis presents experimental and related theoretical studies of pyrochlore titanate oxides, boron nitride nanotubes, and multiferroic bismuth ferrite. We have investigated these systems at high pressures and at low ... -
Phonon anomalies in pyrochlores and 2D materials under extreme conditions: Insights from Raman spectroscopic studies
In solids, electrons do not behave as separate particles but instead interact intensely to form quasiparticles, which couple with other quasiparticles such as phonon, plasmon, and exciton to generate emergent quantum ... -
Phoretic Motion of Colloids : Single Particle and Collective Behaviour
(2017-12-16)In this thesis we have studied systems that driven by mechanisms broadly known as phoresis. More specifically, in the second chapter we calculate the excess noise in electrophoresis of a colloid due to microion fluctuations. ... -
Photo And Thermal Induced Studies On Sb/As2S3 Multilayered And (As2S3)1-xSbx Thin Films
(2013-05-31)Chalcogenide glasses have attracted considerable attention due to their infrared transparency, low phonon energy, and high non linear optical properties. They have been explored as promising candidate for optical memories, ... -
Physics and application of charge transfer in van der Waals heterostructures
Since the discovery of graphene, the field of 2D materials has garnered massive interest from a materials science, basic physics and device application point of view. This results from the diverse range of electronic and ... -
Physics Of Conductivity Noise In Graphene
(2014-05-27)This thesis describes the conductivity fluctuations or noise measurements in graphenebased field effect transistors. The main motivation was to study the effect of disorder on the electronic transport in graphene. In ... -
Planar Hall Effect : Detection of Ultra Low Magnetic Fields and a Study of Stochasticity in Magnetization Reversal
(2018-08-09)In the present thesis, we have explored multiple aspects concerning the stochasticity of magnetic domain wall motion during magnetization reversal, all of which originated from our initial study of magnetic field sensing ... -
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, ... -
Polarized Line Formation In Turbulent And Scattering Media
(2010-10-13)This thesis is devoted to improve our knowledge on the theory of polarized line formation in a magneto-turbulent medium, and in a scattering dominated magnetized medium, where partial redistribution (PRD) effects become ... -
Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite
(2018-05-21)Carbon nanotubes possess various unique and interesting properties. They have very high thermal and electrical conductivities, high stiffness, mechanical strength, and optical properties. Due to these properties, CNTs are ... -
Precise Frequency Measurements Of Atomic Transitions
(2011-08-02) -
Precision Measurements of the Radio Background at Long Wavelengths
(2018-05-09)The study of continuum sky background spectrum at low radio frequencies has achieved specific importance in present day observational cosmology . At these low frequencies the sky continuum is contributed by the extragalactic ... -
Preparation and Optical Properties of Hybrid Assemblies of Metallic Gold Nanoparticles and Semi-Conducting CdSe Quantum Dots
(2018-04-16)This thesis summarizes the methods of preparation and optical properties of hybrid assemblies of Au NPs and cadmium selenide (CdSe) QDs. First chap-ter deals with the literature survey and theoretical aspects of plasmonics ... -
Preparation, Characterization And Ionic Conductivity Studies On Certain Fast Ionic Conductors
(2011-01-20)Fast ionic conductors, i.e. materials in which charge transport mainly occurs through the motion of ions, are an important class of materials with immense scope for industrial applications. There are different classes of ... -
Probing Anisotropic Interactions In Solid State NMR : Techniques And Applications
(2011-06-30)The thesis aims at methodological developments in Nuclear Magnetic Resonance (NMR) and study of oriented samples like liquid crystals and single crystals and powder samples. Though methodological development in solid state ... -
Probing charge-density waves and superconductivity in low-dimensional systems
The recent advent of two-dimensional materials has led to the discovery of materials with fascinating phase diagrams. These systems have exciting electronic phases which coexist or compete with each other. Here in this ... -
Probing effect of disorder in the electrical and optical properties on van der Waals heterostructure
In this thesis, we studied the transport properties of single-layer graphene and single-layer to few-layer MoS2. We also studied the optical properties of MoS2 based single-layer, twisted bilayer devices. The main observations ... -
Probing Electronic States in Twisted Bilayer Graphene with Electric Fields: A study of Superconductivity, Non-Local Resistance, Magnetoresistance Hysteresis, and Thermoelectric Effects
Introducing a `twist' degree of freedom to modify the low energy band structures and engineer novel electronic phases from the constituent van der Waals 2D materials, was proposed theoretically more than a decade earlier ...