Browsing Division of Physical and Mathematical Sciences by Title
Now showing items 699-718 of 1362
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Non-Gaussian Signatures of Inflationary Gauge Fields: Higher-Order Correlations and Associated Soft Theorems
In modern cosmology, the inflationary paradigm offers a natural framework for understanding the large-scale homogeneity and isotropy of our observed universe and the origin of primordial density perturbations. The quantum ... -
Non-invasive Elastic Property Recovery of Tissue and Tissue-Like Objects from Ultrasound Excited Resonant Modes
This thesis is on non-invasive elastic property measurement of tissue or tissue-mimicking materials through vibro-acoustography and ultrasound assisted diffusing wave spectroscopy (UA-DWS). Towards this, a known force is ... -
Non-ohmic conduction electrical switching and magneto-resistance of quasi one-dimensional conductors at high pressures
Electrical switching in the three charge?transfer complexes mtpa?(TCNQ)_x, benzidine–DDQ, and o?tolidine–DDQ has a common origin, and the basic features observed in these complexes are the same. Current–voltage (I–V) ... -
Non-Resonant Radiofrequency responce of the layered high-temperature superconducter Bi2Sr2CaCu2O8
In pristine Bi2212, the electromagnetic coupling determines the C44C_{44}C44? of the stack of 2D vortices as the field increases. In the presence of columnar defects, the 2D vortices in adjacent CuO bilayers are pinned ... -
Nonequilibrium Fluctuations In Sedimenting And Self-Propelled Systems
(2013-06-10)Equilibrium statistical mechanics has a remarkable property: the steady state probability distribution can be calculated by a procedure independent of the detailed dynamics of the system under consideration. The partition ... -
Nonlinear analysis of lower hybrid by many-body techniques
In some recent experiments, intense ion heating has been observed. This heating has been attributed to the excitation of the lower hybrid in the inhomogeneous magnetoactive plasma. The level of turbulence is observed to ... -
Nonlinear and Geometric Properties of Accreting Compact Sources Based on Spectral and Timing Analyses
We study the spectro-temporal properties of the black hole X-ray binaries (BHXBs) GRS 1915+105 and IGR J17091-3624 with data from RXTE, Chandra and XMM-Newton. From the analysis result, we propose models of accretion ... -
Nonlinear Charge Transport and Photo-Physical Studies in Conjugated Polymers (P3meT, P3HT) and their Hybrid Composites with Silver Sulfide Quantum Dots
Organic semiconductors have been investigated as an emerging class of materials for their viable applications in electronics. Despite considerable improvement in device properties, a better understanding of the nature of ... -
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 ... -
Nonlinear propagation of intense electromagnetic waves in quasar and pulsar plasmas
his thesis presents the results of analytical as well as numerical investigations of radiation–plasma interaction instabilities in astrophysical plasmas. It consists of two introductory chapters, four main chapters, and ... -
Nonlinear wave propagation in muln dimensions
This thesis consists of four chapters including a chapter on general introduction and deals with some problems in nonlinear wave propagation in multi-dimensions. The problems are: nonlinear wave propagation in a two-dimensional ... -
Nonreciprocity, condensation and chirality in active granular systems
We present a journey into the rich non-equilibrium phenomena of active granular systems, a versatile model for studying “living” materials. Our exploration begins with the discovery of non-reciprocal, medium-mediated ... -
Normal Spectrum of a Subnormal Operator
(2018-03-21)Let H be a separable Hilbert space over the complex field. The class S := {N|M : N is normal on H and M is an invariant subspace for Ng of subnormal operators. This notion was introduced by Halmos. The minimal normal ... -
Novel Diffraction Based Deflection Profiling For Microcantilever Sensor Technology
(2015-02-04)A novel optical diffraction based technique is proposed and demonstrated to measure deflections of the order of ~1nm in microcantilevers (MC) designed for sensing ultra-small forces of stress. The proposed method ... -
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 ... -
Novel Micro fluidic Techniques for Point-of-Care Diagnostics
Point-of-care Diagnostics (POCD) is one of the rapidly growing areas of health-care sector that avails to the needs of the patient at the point-of-care. An ideal POCD device is required to be compact, portable, offer ... -
Novel Pathways for Beyond Standard Model Physics
In the light of discovering the Higgs boson and null results at the LHC, we look for new pathways for Beyond Standard Model Physics, which could accommodate at least one of the Standard Model shortcomings. (i) Unification ... -
Novel Spectral Processing Methods in NMR – Wavelet Transform and Pattern Based Analysis
NMR spectroscopy provides a variety of information leading to an understanding of the properties of different materials. To extract this information from the experiments, one needs to have noise and artifacts free spectra ... -
Novel spin, charge, and lattice dynamics in pyrochlore iridates : Raman and X-ray diffraction studies at low temperatures and high pressure
This thesis investigates phonon dynamics, electronic, and spin excitations along with structural instabilities and phase transitions in rare earth pyrochlore iridates, A2Ir2O7 (A = Pr, Gd, Dy, and Er) and Bi-doped Sm2Ir2O7 ...