Division of Physical and Mathematical Sciences: Recent submissions
Now showing items 141-160 of 1264
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Development of certain photothermal wave techniques and investigations on the thermal properties of Al20 ASx Te80-x glasses
A novel photoacoustic methodology has been developed using rear-surface illumination of samples in the thermally thick regime. The method relies on obtaining the phase data of the normalized signal to measure the thermal ... -
Local structure and transport properties of chalcogenide glasses
The study o f the structure and properties o f disordered materials continues to be a topic o f interest in condensed matter physics. Glassy semiconductors, in particular, chalcogenide glasses have been important ... -
Phase transition at critically, poisson convergence of isolated vertices and connectivity in random connection models
This work has two parts. The first part contains the study of phase transition and percolation at criticality for three random graph models on the plane, viz., the homogeneous and inhomogeneous enhanced random connection ... -
Nonlinear wave propagation in muln dimensions
This thesis consists of four chapters including a chapter on general introduction and deals with some problems in nonlinear wave propagation in multi-dimensions. The problems are: nonlinear wave propagation in a two-dimensional ... -
Iterative and direct P;Adic algorithms for exact solution of numerical problems
In this chapter, we have described an O(n³), 2 < P < 3 algorithm for inverting integer matrices using p-adic computations. Some of the important aspects of this method are: (a) Absence of any convergence problems – the ... -
Numerical and analytic studies of generalised Burgers equations
Numerical and Analytic Studies of Generalised Burgers Equations The Burgers equation ut+uux=?uxx,???>0u_t + u u_x = \delta u_{xx}, \; \delta > 0ut?+uux?=?uxx?,?>0 is a nonlinear partial differential equation representing ... -
Solutions of some rasially symmetric problems of heat conduction with phase change
Some analytical and numerical solutions pertaining to radially symmetric problems of heat conduction with phase change have been presented in this thesis. The emphasis is on finding the growth rate of the moving boundary. ... -
Theoretical studies on some superconductors.
Superconductivity can be considered to be one of the most attractive branches of solid-state physics. This is especially true now, with the sensational discoveries of high transition-temperature superconductors. On the ... -
Some stability and flow problems in hydrodynamics
(a) Exploding shell: We see that the disturbances in the plasma pressure and velocity grow with time. They manifest in the form of unbounded oscillations with their amplitudes varying as time and frequencies proportional ... -
Spectro-polarimetric signatures of the pale blue dot: from planets to exoplanets
When it comes to understanding the habitability of planets, the context of the third planet in our Solar System—our Earth—is of paramount importance. Understanding the climate of Earth and other planets in our Solar ... -
Multiphase gas in the baryon cycle: from jellyfish galaxies to turbulent galactic outflows
The formation and evolution of galaxies are shaped not only by gravity but also by the complex behaviour of gas—the dominant baryonic component within and around galaxies. This gas spans a wide range of temperatures, ... -
Engineering Weyl and Dirac Fermions in Transition Metal Perovskites
The emergence of topological materials has fundamentally altered the landscape of condensed matter physics, introducing phases of matter defined by the topological properties of their electronic wavefunctions. A particularly ... -
Proximity and Strain Driven Quantum Transport in Graphene
Graphene, with its relativistic band structure and high mobility, provides a promising ground for exploring emergent electronic phenomena when interfaced with other two-dimensional materials. By introducing symmetry-breaking ...