etd AT Indian Institute of Science: Recent submissions
Now showing items 2401-2420 of 6965
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Development of Nanosensors and Microfluidics towards Raman Spectroscopic Applications
Surface Enhanced Raman Spectroscopy (SERS) has become a powerful method for detection of diverse analytes ranging from solution of picomolar concentration to single molecule and single cell analysis. The distinctive nature ... -
Development and Characterization of Ordered Magnetic Nanocomposite
Magnetic nano-particles dispersed in a non-magnetic matrix is promising for storage technology. Additionally, such magnetic nano composite (MNC) materials have potential applications in the field of telecommunication, ... -
Geometrical and Topological Properties of CMB Polarization Fields
Cosmic Microwave Background (CMB) is a relic from the early Universe. It was generated due to the physical processes in the early Universe during an epoch known as the recombination or decoupling epoch. The CMB has highly ... -
Insights into the Regulation of Transcription Initiation of DNA Gyrase and Role of Transcription Factor Gre from Mycobacterium tuberculosis
Genus Mycobacterium comprises a large number of species including many pathogens such as Mycobacterium leprae, Mycobacterium abscessus and Mycobacterium tuberculosis (Mtb), the last one is the causative agent of the fatal ... -
Energetics of monsoon variability over the last 22,000 years
The interpretation of proxies of paleo monsoons has been based primarily on changes in incident solar radiation. The role of feedbacks has not been examined in depth. In this thesis, we have used a diagnostic model of ... -
Mechanistic Understanding of Organic Solar Cells: A Detailed Investigation on Role of Förster Resonance Energy Transfer, Dielectric Constant and Exciton Dynamics
Organic solar cells (OSC) have been emerging as promising energy harvesting technology because of their low-cost fabrication, semitransparency, solution processability and ability to be produced in large scale using ... -
Understanding the Functions of Nucleoid Associated Proteins in Mycobacterium tuberculosis
The prokaryotic genome, though lacks a membrane bound organelle for its housing, is restricted to only about 25% of the cytoplasmic space called the nucleoid. The dramatic compaction required for the genome to fit in is ... -
Response of Mycobacterium tuberculosis to Hypoxia and its physiological Significance - A Morphological and Molecular Level Study
Mycobacterium tuberculosis (Mtb) has evolved as an important clinical pathogen due to its ability to gain multidrug resistance, to enter into latency to persist there and to get reactivated from the latent infection in ... -
Identification and Characterization of Molecular and Genetic Regulators of Cellular Senescence - Role of Free Radical Homeostasis
Aging is defined in an evolutionary biological context as a steady state decline in the specific fitness components of an organism due to internal physiological deterioration. The most profound and important contribution ... -
Soft Switched Multilevel Unidirectional High Frequency Link DC to AC Converter for Medium Voltage Grid Integration of Solar Photovoltaics
Grounding the frame of photovoltaic (PV) panel is a necessity for the safety of humans. This leads to the formation of large capacitance between PV cells and ground. Hence, to reduce leakage current due to parasitic ... -
Development of a wrought Mg‒7Sn‒3Zn alloy with improved strength and ductility
The current focus of research in Mg alloys is to develop wrought alloys suitable for the automotive industry. The challenges to be overcome are low strength, poor ductility, and high cost associated with wrought Mg‒based ... -
Resonances and beats in nonlinear structural acoustic waveguides
In this thesis that is entirely analytical in nature, nonlinear wave propagation in various structural-acoustic waveguide geometries is studied. The waveguides considered include a circular cylindrical waveguide with a ... -
Analysis and Mitigation of SideLobe Degradation due to Quantized control in mmWave 5G Phased Arrays
Antenna arrays are one of the most important parts of the RF communication systems. With the advancement in the eld of 5G mobile communication, electronically steerable arrays, particularly phased arrays have undergone ... -
Super-Resolution Imaging Reveals Localization and Regulation of Nanoscale Machinery Involved in the Amyloidogenic Pathway
Amyloid Precursor Protein (APP) is a key player in Alzheimer’s disease (AD). Despite intuitive insights into differential proteolysis of APP, there is a little understanding of how the amyloidogenic machinery is distributed ... -
On the Kobayashi geometry of domains
In this thesis we study questions broadly related to the Kobayashi (pseudo)distance and (pseudo)metric on domains in ℂn. Specifically, we study the following subjects: Estimates for holomorphic images of subsets in convex ... -
Parametric Manipulation in 2D Material based NEMS Resonators
In this this thesis, I have studied dynamics of the two-dimensional (2D) material based NEMS resonators with resonant frequency ranging typically from 10 MHz to 100 MHz. The experiment involved fabrication of the ... -
3D Packaging for Integration of Heterogeneous Systems
With several new applications getting developed around wearable technologies for Internet of Things (IoT), there has been a growing need for development of the miniaturized systems. Emerging applications in healthcare, ... -
Novel, Robust and Accurate Central Solvers for Real, Dense and Multicomponent Gases
The nonlinear convection terms in the governing equations of inviscid compressible fluid flows are nontrivial for modelling and numerical simulation. The traditional Riemann solvers, which are strongly dependent on the ... -
Mode Engineering in Micro Ring Resonators and Their Application
Silicon Photonics (SiP) has emerged as the prominent platform for Photonic Integrated Circuits (PICs). CMOS technology compatible fabrication processes, high index contrast of the waveguide core-cladding leading to sharp ... -
Electro-thermal Transport through Graphene & CNT at Nano-second Time Scales and its Implications on Device Reliability
The prospects of using Graphene and MWCNT as a channel material for RF transistors and interconnects, respectively, have recently garnered much attention. E orts are being made for improvements at the material and device ...