Division of Physical and Mathematical Sciences: Recent submissions
Now showing items 361-380 of 902
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Dilation Theory of Contractions and Nevanlinna-Pick Interpolation Problem
In this article, we give two different proofs of the existence of the minimal isometric dilation of a single contraction. Then using the existence of a unitary dilation of a contraction, we prove the `von Neumann's ... -
Homogeneous Operators and Some Irreducible Representations of the Mobius Group
In this report, after recalling the definition of the M¨obius group, we define homogeneous operators, that is, operators T with the property '(T) is unitarily equivalent to T for all ' in the M¨obius group and prove some ... -
Design, Development and Performance Study of Microneedle & Micropump-based Transdermal Drug Delivery System
Transdermal drug delivery is the most preferred drug delivery method, due to its high efficiency and less side effects. In conventional transdermal drug delivery, the delivery of macromolecular drugs (ex: Insulin, vaccines ... -
Crystal Structure Analysis of a (B/a)8-TIM Barrel Enzyme and Its Mutants : Insights into the Role of Interactions Between Termini in Influencing Protein Stability. Experimental and Computational Study of Protein-Surface-Pockets Occluded by Tryptophan Side-Chains
Xylanases (EC 3.2.1.8) are glycosyl hydrolases that catalyze the hydrolysis of internal β-1,4 glycosidic bonds of xylan backbones, and have potential economical and environment friendly applications in the paper pulp, food, ... -
Electrical Spin Injection and Detection Using Oxide Magnetic Material Fe3O4
Since the proposal of Datta-Das transistor, area of spin injection and detection is in the spotlight for the last decade. Intense research in this field has successfully tackled many issues like conductivity mismatch. Use ... -
Study of Dynamics, Thermal and Rheological Properties of Polymer Grafted Nanoparticle-polymer Blend
We studied dispersion state and dynamics of polymer grafted nanoparticle in photopolymer matrix nanoparticle-polymer blend- and their thermal and rheological properties. While thinking about a nanoparticle-polymer blend, ... -
Crystal Structures of Native and AdoMet Bound rRNA Methyltransferase from Sinorhizobium meliloti : Structural Insights into rRNA Recognition. Evolutionary, Structural and Functional Studies on Nucleoid-Associated Proteins HU and IHF
DNA- and RNA-binding proteins play a central role in gene regulation, which includes transcriptional control, alternative splicing, post-translational and transcriptional modifications like methylation and acetylation among ... -
Studies of X-Ray Transients and a Future X-Ray Sky Monitor
For this thesis we studied X-ray transients. In addition we also studied some methods to study these transients, both observationally and in terms of the instrument used. The first transient studied is a black hole binary ... -
Dendrimer Interactions with Cell Membrane and Pore Forming Toxins
Dendrimers are hyper-branched polymeric nanoparticles with a central core molecule connected by successive dendritic branching layers. The structure controlled parameters of den-drimers such as size, shape, surface chemistry, ... -
Studies of "clean" and "disordered" Bilayer Optical Lattice Systems Circumventing the 'fermionic Cooling-problem'
(2018-09-04)The advancement in the eld of cold-atoms has generated a lot of interest in the condensed matter community. Cold-atom experiments can simulate clean, disor-der/impurity free systems very easily. In these systems, we have ... -
Dynamical Imprint of Dark Matter Halo and Interstellar Gas on Spiral Structure in Disk Galaxies
(2018-08-29)The topic of this thesis deals with the spiral structure in disk galaxies with a specific aim of probing the influence of the dark matter halo and the interstellar gas on the origin and longevity of the spiral arms in ... -
Sputter Deposited ZrC and NbC Thin Films – Studies on Microstructure, Texture and Hardness
(2018-08-29)Transition metal carbides have great industrial importance with a wide area of applications. Unlike many ceramic materials which can be produced from raw materials found in nature, the refractory carbides generally do not ... -
Experimental and Molecular Dynamics Simulation Study of Viscosity of Polymer Nanocomposites
(2018-08-29)One of the important dynamic parameter characterizing the properties of polymer nanocomposite is viscosity. It is a quantity of interest on macroscopic scale also. A thorough study of viscosity in case of polymer nanocomposite ... -
Optical Interrogation of the 'Transient Heat Conduction' in Dielectric Solids - A Few Investigations
(2018-08-13)Optically-transparent solids have a significant role in many emerging topics of fundamental and applied research, in areas related to Applied Optics and Photonics. In the functional devices based on them, the presence of ... -
Mechanical Behavior Study of Microporous Assemblies of Carbon Nanotube and Graphene
(2018-08-13)Carbon nanotubes (CNT) and graphene have been one of the noticeable research areas in science and technology. In recent years, the assembly of these carbon nanostructures is one of the most interesting topic to the scientific ... -
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 ... -
On Critical Points of Random Polynomials and Spectrum of Certain Products of Random Matrices
(2018-07-30)In the first part of this thesis, we study critical points of random polynomials. We choose two deterministic sequences of complex numbers, whose empirical measures converge to the same probability measure in complex plane. ... -
Electrical Transport in Si:P and Ge:P δ-doped Systems
(2018-07-30)Doped semiconductor systems have for decades provided an excellent platform to study novel concepts in solid state physics such as quantum hall effect, metal-to-insulator transition (MIT), weak localization and many body ... -
Dynamics of Warps and Lopsidedness in Spiral Galaxies
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Synthesis and Characterization of 1D & 2D Nanostructures : Performance Study for Nanogenerators and Sensors
(2018-07-26)Recently, efforts have been made for self-powering the batteries and portable electronic devices by piezoelectric nanogenerators. The piezoelectric nanogenerators can work as a power source for nano-systems and also as an ...