Browsing Division of Physical and Mathematical Sciences by thesis submitted date"2000"
Now showing items 1-11 of 11
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Betti Numbers, Grobner Basis And Syzygies For Certain Affine Monomial Curves
(Indian Institute of Science, 2007-03-30)Let e > 3 and mo,... ,me_i be positive integers with gcd(m0,... ,me_i) = 1, which form an almost arithmetic sequence, i.e., some e - 1 of these form an arithmetic progression. We further assume that m0,... ,mc_1 generate ... -
Carrier Mobility And High Field Transport in Modulation Doped p-Type Ge/Si1-xGex And n-Type Si/Si1-xGex Heterostructures
(Indian Institute of Science, 2007-06-26)Modulation doped heterostructures have revolutionized the operation of field effect devices by increasing the speed of operation. One of the factors that affects the speed of operation of these devices is the mobility of ... -
A Digital Auto Correlation Spectrometer For Solar Burst Obsevations At Decameter Wavelengths
(Indian Institute of Science, 2006-02-27)This thesis reports the design, construction, and the initial results obtained from a digital spectrograph for observations of radio burst emission from the Sun. One of the distinct advantages of radio spectral studies of ... -
ECR Assisted Deposition of Tin And Si3N4 Thin Films For Microelectronic Applications
(Indian Institute of Science, 2006-02-27)The broad theme of the present research investigation is Ion Assisted Deposition of thin films and its effect on the properties of thin films. Though this activity has been of interest to researchers for more than a decade, ... -
Experimental investigations on metal-insulator transition and structure in amorphous carbon films
Conductivity of carbon films prepared from TCPA at pyrolysis temperatures of 700°C, 800°C, and 900°C was measured by varying the temperature between 1.4 K to 300 K. To study the effect of substrates, films were deposited ... -
Ground states, excitations, thermodynamics and exact results in various lattice systems
This thesis covers problems in a few different aspects of interacting many-particle systems on a lattice. The first problem is of a quantum dynamical system, and the rest are of quantum and classical magnetic systems. We ... -
Measurement Of Solar Cell AC Parameters Using Impedance Spectroscopy
(Indian Institute of Science, 2006-03-07)Photovoltaic (PV) conversion of solar energy appears to be one of the most promising ways of meeting the increasing future energy demand. In space, photovoltaic power source is the only alternative. The demand for higher ... -
Optical Metrology:Techniques For The Measurement Of Optical Parameters
(Indian Institute of Science, 2006-03-08)The work reported in this thesis has been carried out in the following two areas of Optical metrology: 1. Measurement and correction of prism angles 2. Measurement of refractive indices using a spectrograph. The ... -
Reactive diffusion in AI/Ge multilayers
It may be mentioned in this context that there is no evidence of the hexagonal and orthorhombic phase reported in e-beam annealed amorphous Al-Ge films in the present investigations. It is also interesting to note that the ... -
Spatiotemporally chaotic states of some Nonequilibrium systems
We have carried out the most extensive numerical study of model (1), especially with a view to elucidating the nature of its statistical steady states and transitions between them. Our work is guided by studies of phase ... -
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 ...