Browsing Instrumentation and Applied Physics (IAP) by thesis submitted date"2010"
Now showing items 1-9 of 9
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Axially Symmetric Equivalents Of Three-Dimensional Rf Ion Traps
(2013-09-13)This thesis presents axially symmetric equivalents of three-dimensional rf ion traps. Miniaturization in mass spectrometry has focused on miniaturizing mass analyzers. Decrease in mass analyzer size facilitates reduction ... -
Development Of Cu2ZnSnS4/ZnS Thin Film Heterojunction Solar Cells By Ultrasonic Spray Pyrolysis
(2013-06-06)Semiconductors such as CuInGaSe2 and CdTe have been investigated as absorber layer materials for thin film solar cells since their band gap matches with the solar spectrum. Films as thin as 2m are sufficient for the ... -
Escape Of High Mass Ions Due To Initial Thermal Energy And Its Implications For RF Trap Design
(2013-05-31)This thesis investigates the loss of high mass ions due to the initial thermal energy in ion trap mass analyzers. It provides an analytical expression for estimating the percentage loss of ions of a given mass at a particular ... -
Ion Assisted Deposition Of HfO2 Thin Films For CMOS Gate Dielectric Applications
(2013-09-13)The scaling down of Complementary Metal Oxide Semiconductor (CMOS) transistors to sub-100nm requires replacement of conventional Silicon dioxide layer with high dielectric constant (K) material for gate dielectric. Among ... -
Mathematical And Numerical Studies On The Inverse Problems Associated With Propagation Of Field Correlation Through A Scattering Object
(2011-05-23)This thesis discusses the inverse problem associated with the propagation of field autocorrelation of light through a highly scattering object like tissue. In the first part of the thesis we consider the mathematical issues ... -
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 ... -
Numerical Study of Directionality of Ion Ejection In Axially Symmetric Ion Traps
(2013-02-13)In the normal operation of quadrupole ion trap mass spectrometers, the trapped ions are ejected symmetrically through both the upper (detector) and lower(source) endcap electrodes during mass selective boundary ejection ... -
Studies On Electrical Contact Resistance And Coefficient Of Friction Across Sliding Electrical Contacts
(2011-11-16)Simultaneous measurement of electrical contact resistance (ECR) and coefficient of friction (COF) at the sliding interface is essential to assess the performance of selected material contact pairs for the transfer of current ... -
Study Of Apertures And Their Influence On Fields And Multipoles In rf Ion Traps
(2011-11-16)This thesis presents results of investigations on fields and multipole expansion coefficients in axially symmetric (referred to as 3D)and two dimensional (2D)ion trapmass analysers. 3D mass analysers have a three-electrode ...