Browsing Division of Physical and Mathematical Sciences by Advisor "Asokan, S"
Now showing items 21-37 of 37
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Investigation of Switching mechanism, Thermal, Electrochemical and Structural properties of Solid Electrolytic, Superionic α-AgI based Silver Molybdate glass for Resistive Memory (RRAM) Applications
Developing efficient, fast performing and thermally stable AgI-Ag2O-MoO3glasses are of great interest for Resistive Random Access Memory (RRAM) applications; however there many challenges such as metallization in bulk, ... -
Investigations On Certain Tellurium Based Bulk Chalcogenide Glasses And Amorphous Chalcogenide Films Having Phase Change Memory (PCM) Applications
(2014-09-04)Chalcogenide glass based Phase Change Memories (PCMs) are being considered recently as promising alternatives to conventional non-volatile Random Access Memories (NVRAMs). PCMs offer high performance & low power consumption, ... -
Investigations On Topological Thresholds In Metal Doped Ternary Telluride Glasses
(2009-06-16)The ability to tune the properties over a wide range of values by changing the additives, composition, etc., has made chalcogenide glassy semiconductors, most interesting from both fundamental physics as well as technology ... -
Mechanical, Structural, Thermal and Electrical Studies on Indium and Silver Doped Ge-Te Glasses having Possible PCM Applications
(2018-02-09)The Science behind amorphous Chalcogenide materials opened up new technologies in the arena of Phase Change Memories. The Ovonic universal phase change memory is called universal because it can replace flash memory, DRAM ... -
Novel Methods To Interrogate Fiber Bragg Grating Sensors
(2013-02-14)A novel detection technique to estimate the amount of chirp in fiber Bragg gratings (FBGs) is proposed. This method is based on the fact that reflectivity at central wavelength of FBG reflection changes with strain/temperature ... -
On-board Failure Diagnostics and Failure Prediction of High Power White Light Emitting Diodes Used in Safety Critical Applications
Light Emitting Diodes (LEDs) have become a focus of global lighting community owing to their long service life, low energy consumption and environmental friendliness. The ever-increasing use of LEDs in many applications ... -
Optical, Structural and Mechanical Characterization of Ultrafast Laser Inscribed Chalcogenide Waveguides
In recent years, chalcogenide glasses have established their usefulness as attractive candidates for the fabrication of all-optical devices and mid infra-red lasers. These glasses possess low phonon energy and hence high ... -
Optimisation of Coating Protocols for Etched Fibre Bragg Grating Sensors and Applications in Sensing
Fibre Bragg grating sensors, characterised by high sensitivity, flexibility, and immunity to electromagnetic interference, have found applications in commercial-grade temperature and strain sensors. Removing the clad, ... -
Packaging and Functionalization of Fiber Bragg Grating Sensors for Various Sensing Applications.
In our world, numerous sensors are found everywhere, making our lives simpler and more comfortable. Among these sensors, optical sensors have undergone expeditious development, providing good performance. In particular, ... -
Raman Spectroscopy Instrumentation and Its Application in Deep Tissue Imaging
Raman spectroscopy is based on inelastic scattering, which gives molecular information. Due to its weak nature, for a long-time Raman spectroscopy was limited to only study of molecular interactions, but with the advancement ... -
Shape and Load Estimation using Fiber Bragg Grating Sensors for Structural Health Monitoring of Aircraft Structures
Aerospace structures are exposed to severe loading and environmental conditions, which necessitates constant inspection and maintenance to improve safety and reliability. Currently, the aerospace industry largely depends ... -
Studies on Si15Te85-xGex and Ge15Te85-xAgx Amorphous Thin Films for Possible Applications in Phase Change Memories
(2018-04-06)Chalcogenide glasses are a class of covalent amorphous semiconductors with interesting properties. The presence of short-range order and the pinned Fermi level are the two important properties that make them suitable for ... -
Studies on Single Step Deposition of ZnO Nanostructured Thin Films for Sensing and Photocatalysis Application
ZnO, band gap of ~3.37eV, is a chemical stable, biocompatiable, non-toxic n-type semiconductor material. Due to advancement of microfabrication technology and chemical synthesis method, nanostructured ZnO are found to be ... -
Studies on thick-GEM UV Photon Detector
Large area photodetectors with single photon counting ability motivates to develop gaseous photomultiplier (GPM), that combine thin film photocathode with electron multipliers for efficient detection of UV photon. This ... -
Synthesis, Characterisation and Optimisation of ZnO Thin film & Nanowire array for Dynamic Pressure Sensing Application
Piezoelectric technology based dynamic pressure sensors are widely used for the measurement of rapid pressure variations with respect to time. Quartz is the piezoelectric material ruling the dynamic pressure sensor industry ... -
Thermal And Electrical Properties Of Silver And Iodine Doped Chalcogenide Glasses
(2010-09-13)Silver containing chalcogenide glasses have been extensively studied during the last few decades; the main interest in these materials being their electrical conductivity which changes by several orders of magnitude upon ... -
Ultrafast Laser Inscribed Waveguides on Chalcogenide Glasses for Photonic Applications
(2017-11-30)Chalcogenide glasses are highly nonlinear optical materials which can be used for fabricating active and passive photonic devices. This thesis work deals with the fabrication of buried, three dimensional, channel waveguides ...