Browsing Division of Physical and Mathematical Sciences by thesis submitted date"2025"
Now showing items 1-20 of 42
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Autonomous Motion, Control Strategies & Sensing Applications Using Magnetic Micro-Robots
In recent years, there has been growing interest in manoeuvring nanoscale objects in fluidic environments, as it holds significant potential in targeted therapies, diagnostics, and probing local rheological properties. ... -
Complexity and Randomness in the Dynamics of Quantum Systems
This thesis explores two complementary facets of quantum dynamics: the growth of operator complexity in open quantum systems and the certification of quantum randomness from temporal correlations in single-qubit dynamics. ... -
Curvature Generation in Self-Assembled Fluid Membranes
The ability of thin sheets to curve into complex three-dimensional shapes underlies diverse biological processes. We study curvature generation in fluidic membranes using the model system colloidal membrane, which is ... -
Dipole Cosmology: Revisiting Our Universe with a Flow
In this thesis, we explore an ansatz alternative to the FLRW classes of spacetimes for our Universe, in light of observations that exhibit anisotropies at late times. Despite the existence of these anisotropies beyond ... -
Engineering 2D Materials and Heterostructures for Advanced Gas Sensing and Molecular Memory Devices
The increasing need for monitoring environmental health has spurred the search for advanced sensing materials to create energy efficient, low cost, light weight gas sensing systems. The inherent attributes of 2D materials, ... -
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 ... -
Exploring Scalar-Tensor Theories of Gravity in Light of Tensions and Anomalies in Standard Cosmology
The $\Lambda$CDM model, the standard model of cosmology, has been highly successful in describing a wide range of cosmological observations. However, in the era of precision cosmology, it faces increasing challenges in the ... -
Growth, synthesis, structure, properties and fluorination of barium bismuthate and related oxides
This thesis presents a comprehensive study on the synthesis and characterizations of bismuthates, particularly focussing on BaBiO3 and its fluorinated variants, alongside the exploration of strongly correlated oxides such ... -
Herglotz representation, approximation by inner functions, and Hankel operators
This thesis can be broadly categorized under the theories of multi-variable operators and holomorphic functions, structured into two distinct parts. The first part investigates the relationship between two classical theorems: ... -
High-Velocity Skyrmions : Engineering, Memristors and Random Number Generation
Non-collinear spin textures have become very important in both fundamental research and technology. One of the most interesting examples of these textures is the skyrmion. A skyrmion is a small, vortex-like spin pattern ... -
In-Line Diagnostics for Inkjet Printed Electronics
The development of solution processed thin film circuits involves various process stages. One of the key parameters that decides the performance of the circuit is the semiconductor-insulator interface and the quality of ... -
Induced p-wave superconductivity in a dual topological insulator BiTe and unconventional superconductivity in a magnetic topological insulator MnBi2Te4
The discovery of topological insulators (TI) and semimetals has led to a whole new world of low-energy electronic devices that enable dissipationless transport through their highly spin-orbit coupled conducting channels. ... -
Investigating Magnetic Transitions and the Quantum Spin Liquid State in Complex Oxides
Magnetic properties emerge from the interplay of spin, crystal structures, and external factors such as temperature, magnetic fields, and pressure, resulting in a diverse range of magnetic phenomena with potential applications ... -
Kobayashi geometry and a metric notion of negative curvature
In this thesis, we study some problems that represent various aspects of Kobayashi geometry. Our problems are, in some sense, motivated by a close examination---which forms a part of this thesis---of a property that may ... -
Machine-Learning-Based investigations in Complex Systems: Droplet Coalescence, Ising-type models, and Mathematical Models for Cardiac Tissue
The importance of artificial intelligence and data driven machine learning is growing exponentially in time as are its applications in investigations of complex phenomena in, e.g., climate-systems science, fluid flows, ... -
Mapping class group dynamics, relative character varieties and hyperbolic cone surfaces
This thesis concerns the punctured surface group representations into $\pslr$ and $\pslc$. We study the action of mapping class group on the relative character varieties of punctured surface groups into $\pslr$ and $\pslc$. ... -
Monolayer MoS2 and plasmonic heterostructure for molecular sensor
In recent years, artificially engineered materials, known as meta structures, have demonstrated tuneable optoelectronic properties, making meta-coupled devices highly advantageous for a wide range of technological applications. ... -
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, ... -
New Dispersive Techniques for Quantum Field Theories
Quantum field theory has been remarkably successful in describing interactions of elementary particles, particularly through perturbative methods. However, many important regimes — including strong coupling and quantum ... -
Nonreciprocity, condensation and chirality in active granular systems
We present a journey into the rich non-equilibrium phenomena of active granular systems, a versatile model for studying “living” materials. Our exploration begins with the discovery of non-reciprocal, medium-mediated ...