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Now showing items 11-20 of 33
Mechanical Properties and Self-Assembly of Nanostructures
(2017-12-12)
This thesis is devoted to the investigation of mechanical properties and self-assembly process of materials at the nanoscale. Various nanostructured materials such as nanoparticles, nanotubes, nanowires and thin films are ...
A Study of Electrical Transport and 1 / f Noise in Topological Insulators
(2017-12-10)
The recent discoveries of topological insulators (TI) has opened a new realm for study¬ing topological systems and exploring the exotic properties they offer. The in-built topological protection against direct backscattering ...
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. ...
Crawling, Waving, Spinning : Activity Matters
(2017-12-12)
This thesis has been concerned with a few problems in systems driven at the scale of particles. The problems dealt with here can be extended and elaborated upon in a variety of ways. In 2 we examine the dynamics of a fluid ...
Some Studies of Statistical Properties of Turbulence in Plasmas and Fluids
(2017-12-12)
Turbulence is ubiquitous in the flows of fluids and plasmas. This thesis is devoted to studies of the statistical properties of turbulence in the three-dimensional (3D) Hall magnetohydrodynamic (Hall-MHD) equations, the ...
Shear Induced Transitions In Mixed Surfactant Systems And Anisotropic Colloids
(2017-06-12)
This thesis deals with the non-equilibrium phenomena under shear observed mainly in bilayer forming liquid crystalline phases of mixed surfactant systems, anisotropic colloidal dispersions as well as Langmuir monolayers ...
Numerical Studies of Problems in Turbulence : 1) Fluid Films with Polymer Additives; 2) Fluid Films with Inertial and Elliptical Particles; 3) Scaled Vorticity Moments in Three- and Two-dimensional Turbulence
(2017-11-30)
In this thesis we study a variety of problems in fluid turbulence, principally in two dimensions. A summary of the main results of our studies is given below; we indicate the Chapters in which we present these.
In Chapter ...
Study of Phase Transitions in Two Dimensions using Electrical Noise
(2017-11-21)
It is well known from Mermin-Wagner theorem that a two dimensional(2D) system with continuous symmetry can have no long-range order at finite temperature. However such systems can undergo a transition from a low temperature ...
Origin of Instability and Plausible Turbulence in Astrophysical Accretion Disks and Rayleigh-stable Flows
(2017-12-10)
Accretion disks are ubiquitous in astrophysics. They are found in active galactic nuclei, around newly formed stars, around compact stellar objects, like black holes, neutron stars etc. When the ambient matter with ...
Quantum Simulations by NMR : Applications to Small Spin Chains and Ising Spin Systems
(2017-11-22)
Quantum simulations, where controllable quantum systems are used to simulate other quantum systems, originally proposed by Richard Feynman, are one of the most remarkable applications of quantum information science. Compared ...