Instrumentation and Applied Physics (IAP): Recent submissions
Now showing items 201-220 of 225
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Small Angle Measurement Using Optical Caustics From Hollow Cylinders - Few Investingations
(2009-09-15)‘Optical Caustics’ represent some of the most visually striking patterns of the light in nature.They occur when light rays from a source, such as the sun, get refracted, or reflected by curved media so as to bend and alter ... -
Electrical Switching And Thermal Studies On Certain Ternary Telluride Glasses With Silicon Additive And Investigations On Their Suitability For Phase Change Memory Applications
(2009-09-11)The Phase Change Memories (PCM) based on chalcogenide glasses are being considered recently as a possible replacement for conventional Non Volatile Random Access Memories (NVRAM). The main advantages of chalcogenide phase ... -
Study of Subharmonic Oscillations In Resonance Excitation Experiments In Nonlinear Paul Traps
(2009-07-08)This thesis presents the results of studies on the problem of subharmonic oscillations in nonlinear Paul trap mass spectrometry. The objective of this thesis is to determine whether the subharmonic oscillations of ions in ... -
Design And Development Of A Liquid Scintillator Based System For Failed Fuel Detection And Locating System In Nuclear Reactors
(2009-07-02)Failed fuel refers to the breach in the fuel-clad of an irradiated fuel assembly in a nuclear reactor. Neutron detection or gamma detection is commonly used in Failed Fuel Detection and Locating (FFDL) system to monitor ... -
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 ... -
Design, Fabrication And Testing Of A Versatile And Low-Cost Diffuse Optical Tomographic Imaging System
(2009-06-16)This thesis reports the work done towards design and fabrication of a versatile and low cost, frequency domain DOT (Diffuse Optical Tomography) Imager. A design which uses only a single fiber for the source and a single ... -
Denoising And Inpainting Of Images : A Transform Domain Based Approach
(2009-05-25)Many scientific data sets are contaminated by noise, either because of data acquisition process, or because of naturally occurring phenomena. A first step in analyzing such data sets is denoising, i.e., removing additive ... -
Geometry Optimization Of Axially Symmetric Ion Traps
(2009-05-13)This thesis presents numerical optimization of geometries of axially symmetric ion trap mass analyzers. The motivation for this thesis is two fold. First is to demonstrate how the automated scheme can be applied to achieve ... -
Studies On The Electrical Properties Of Titanium Dioxide Thin Film Dielectrics For Microelectronic Applications
(2009-05-06)The scaling down of Complementary Metal Oxide Semiconductor (CMOS) transistors requires replacement of conventional silicon dioxide layer with higher dielectric constant (K) material for gate dielectric. In order to reduce ... -
Gas Sensor-Studies On Sensor Film Deposition, ASIC Design And Testing
(2009-04-29)The widespread use of Liquid Petroleum Gas (LPG) for cooking and as fuel for automobile vehicles requires fast and selective detection of LPG to precisely measure the leakage of gas for preventing the occurrence of accidental ... -
Property Modulation Of Zinc Oxide Through Doping
(2009-04-24)Semi conductors are of technological importance and attracted many of the re-searchers. ZnO belongs to the family of II-VI semiconductors and has material properties well suitable to UV light emitters, varistors, Schottky ... -
Studies On The Effect Of Closed Loop Controls On The Stability Of High Repetition Rate Copper Vapour Laser Pumped Dye Laser
(2009-04-01)Copper vapour laser (CVL) pumped high repetition rate narrow bandwidth dye laser is an important source of tunable radiation. It finds numerous applications in spectroscopic investigations and selective material processing ... -
Ultrasound Assisted Optical Elastography For Measurement Of Mechanical Properties Of Soft Tissue Mimicking Phantoms
(2009-03-03)This work describes the development of an optical probe for measuring movement of tissue particles deep inside which are loaded by an ultrasound remote palpation device. The principle of the method is that ultrasound force ... -
Gas Sensors - Micro-Heater Designs And Studies On Sensor Film Deposition
(2009-03-03)Current gas sensor technology, although meeting the minimum requirements in many instances, suffers for a number of limitations. Hence, there is currently a considerable volume of research being undertaken at many ... -
Nonlinear Dynamics Of Resonances In, And Ejection From Paul Traps
(2008-09-26)This thesis presents results of investigations that have been carried out to understand dynamics in nonlinear Paul trap mass spectrometers. Of the three problems that have been taken up for study in this thesis, the first ... -
Pressure Sensor Development Using Hard Anodized Aluminum Diaphragm And Thin Film Strain Gauges
(2008-01-16)The sensor is a device that converts a form of energy concerning which the information is sought, called the measurand, to a form (electrical) in which it can be usefully processed or interpreted. Sensors rely on physical ... -
Resonant Excitation Of Ions In Paul Trap Mass Spectrometer
(2007-12-29)A Paul trap mass spectrometer has a three-electrode geometry mass analyzer consisting of two identical end cap electrodes and a ring electrode. Traditionally, the two end cap electrodes are electrically grounded and an RF ... -
Semi Conducting Metal Oxide Gas Sensors: Development And Related Instrumentation
(Indian Institute of Science, 2007-05-21)A sensor is a technological device or biological organ that detects, or senses, a signal or physical condition and chemical compounds. Technological developments in the recent decades have brought along with it several ... -
Development Of Point-Contact Surface Acoustic Wave Based Sensor System
(Indian Institute of Science, 2007-05-16)Surface Acoustic Waves (SAW) fall under a special category of elastic waves that need a material medium to propagate. The energy of these waves is confined to a limited depth below the surface over which they propagate, ... -
Studies On Surface Plasmon Resonance And Related Experimental Methods Using Fixed Plasmon Angle
(Indian Institute of Science, 2006-03-08)Surface plasmon waves are transverse magnetic electromagnetic waves propagating along a dielectric-metal interface. These waves can be excited by resonant absorption of electromagnetic radiation leading to surface plasmon ...