Browsing Division of Physical and Mathematical Sciences by thesis submitted date"2010"
Now showing items 21-40 of 40
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Observational Aspects Of Core Collapse Supernovae
(2013-10-17)The discovery of several bright supernovae (SNe) in recent years has evoked a great deal of interest in these objects. The study of these objects are of importance not only as probes to the end stages of stellar evolution, ... -
On The Magnetic And Magnetotransport Studies Of Cobaltates And Superconductor/ Ferromagnet Heterostructures
(2011-06-30)The study of the co-existence of singlet superconductivity and ferromagnetism in bulk materials has been a long standing and intriguing problem in condensed matter physics since the superconductivity and ferromagnetism are ... -
On the Nature Of Propagating MHD Waves In The Solar Atmosphere
(2014-10-15)One of the most persistent problem in solar physics is the identification of the mechanism that heats the solar corona and accelerates the fast solar wind. Magneto-hydrodynamic (MHD)waves play a crucial role in heating of ... -
Optical And Structural Investigations Of Defects In CdZnTe(Zn ~ 4%) Crystals
(2013-06-12)The CdTe family members (in particular CdZnTe) remain the substrate of choice for epitaxial growth of HgCdTe for use in high performance infrared (IR) detectors and focal plane arrays. This is the case despite advances in ... -
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 ... -
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 Magnetic And Structural Properties Of Metallic Nanowires Using Resistivity Noise
(2013-07-19)The main focus of this thesis work has been the study of domain wall (DW) dynamics in disordered cylindrical nanomagnets. The study attempts to accurately quantify the stochasticity associated with driven (temperature/magnetic ... -
Some Aspects Of The First Passage Time Problem In Neuroscience
(2011-08-08)In the stochastic modeling of neurons, the first passage time problem arises as a natural object of study when considering the inter spike interval distribution. In this report, we study some aspects of this problem as it ... -
Some Descriptions Of The Envelopes Of Holomorphy Of Domains in Cn
(2011-08-09)It is well known that there exist domains Ω in Cn,n ≥ 2, such that all holomorphic functions in Ω continue analytically beyond the boundary. We wish to study this remarkable phenomenon. The first chapter seeks to motivate ... -
Some Unconventional Phases And Phase Transitions In Condensed Matter : Spin-Nematics, Spin-Liquids, Deconfined Critical Points And Graphene NIS Junctions
(2013-07-19)Condensed matter physics provides us with an opportunity to explore a large variety of systems with diverse properties. Central to the understanding of these systems is a characterization of the nature of their ground ... -
Structural, Electronic And Vibrational Properties Of n-layer Graphene With And Without Doping : A Theoretical Study
(2011-07-11)Graphene – a two-dimensional honeycomb lattice of sp2-bonded carbon atoms – has been attracting a great deal of research interest since its first experimental realization in 2004, due to its various novel properties and ... -
Studies Of Diffuse Ultraviolet Radiation
(2013-10-07)Ever since the first observations of diffuse ultraviolet radiation by Hayakawa et al. (1969) and Lillie & Witt (1976), there has been an effort to understand its distribution and its origin. Unfortunately, because of the ... -
Studies On Electrical Contact Resistance And Coefficient Of Friction Across Sliding Electrical Contacts
(2011-11-16)Simultaneous measurement of electrical contact resistance (ECR) and coefficient of friction (COF) at the sliding interface is essential to assess the performance of selected material contact pairs for the transfer of current ... -
Study Of Apertures And Their Influence On Fields And Multipoles In rf Ion Traps
(2011-11-16)This thesis presents results of investigations on fields and multipole expansion coefficients in axially symmetric (referred to as 3D)and two dimensional (2D)ion trapmass analysers. 3D mass analysers have a three-electrode ... -
A Study Of The Metric Induced By The Robin Function
(2013-09-13)Let D be a smoothly bounded domain in Cn , n> 1. For each point p _ D, we have the Green function G(z, p) associated to the standard sum-of-squares Laplacian Δ with pole at p and the Robin constant __ Λ(p) = lim G(z, p) ... -
Synthesis And Electronic Properties Of Nanowires Of Charge Transfer Complexes
(2011-07-11)In case of charge-transfer complex of TTF:TCNQ lot of work had previously been done on single crystals and thin films to study various interesting properties including phase transitions which were attributed to Peierls ... -
Systematics Of The Statistical Properties Of Homogeneous And Isotropic Magnetohydrodynamic Turbulence
(2011-07-01)In this PhD Thesis, we have studied several problems related to statistical properties of homogeneous, isotropic and turbulent flow of conducting fluid with direct numerical simulations (DNS) of equations of magnetohydrodynamics ... -
Ultrafast Response And Time Resolved Spectroscopy Of Carbon Nanotubes, Semiconductors And Rare-Earth Titanates Using Femtosecond Laser Pulses
(2013-10-21)In this thesis, experimental studies are reported of ultrafast dynamics and third order optical nonlinear coefficients of carbon nanotubes, and time resolved coherent phonon dynamics of semiconductors and rare earth ... -
X-Ray Crystallographic Studies Of Designed Peptides : Characterization Of Self-Assembled Peptide Nanotubes With Encapsulated Water Wires And β-Hairpins As Model Systems For β-Sheet Folding
(2011-08-08)The study of synthetic peptides aid in improving our current understanding of the fundamental principles for the de novo design of functional proteins. The investigation of designed peptides has been instrumental in providing ...