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Now showing items 11-20 of 24
Reflection and rotation for three dimensional microscopy of live cells
(Vanderbilt University. Dept. of Physics & Astronomy, 2008-04-18)
Confocal scanning laser microscopy and multiphoton microscopy provide 3D data from biological specimens, but with limited z-axis precision. Multiple microscale mirrors can be used to obtain more accurate 3D data on living ...
Engineering a perfusion-enabled mechanical compressor for long-duration immobilization and microscopy of cells and small organisms
(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)
The study of living specimens is essential to the understanding of
organismal behavior. Unfortunately, a major difficulty in the study of
live organisms is that many move in and out of the field of view or
focal plane ...
Perturbation Theory for Thin Cladding Layers on Silicon Photonic Systems
(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)
I develop a perturbation theory for resonant frequency shifts caused by thin
layer of material added to dielectric systems. This development can be used
to effectively model photonic surface-sensing systems, which use ...
Developing High-Brightness Electron Beam Sources for Producing Quantum Degenerate Electron Beams
(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)
The Pauli Exclusion Principle places a fundamental limit on the brightness
of an electron beam. Developing a cathode which can reach this limit is
useful for achieving maximum operation in current applications of ...
Finite-Element Analysis of Low-Power Laser Heating in Gold::Vanadium Dioxide Nanocomposites
(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)
Finite element modeling was performed using COMSOL Multiphysics to study the
thermal dynamics of gold::vanadium dioxide (VO$_{2}$) nanocomposites. These
simulations were done to understand the data from transient ...
Nanoscale dolmen structure exhibiting a tunable Fano resonance
(Vanderbilt University. Dept. of Physics and Astronomy, 2016-05-02)
A Fano resonance is an asymmetric, resonant scattering phenomenon which occurs in a multitude of fields, such as atomic physics, nuclear physics, nonlinear optics, and nanophotonics. The Fano resonance is a many-particle ...
The quadratic approximation for quintessence with arbitrary initial conditions
(Vanderbilt University. Department of Physics and Astronomy, 2014-04)
We examine models of quintessence in which a minimally-coupled scalar field
phi evolves near a
local extremum of its potential V ( phi) at phi_*. Assuming that (1/V
)(dV/dphi) is small and w ~ -1, we
Taylor expand the ...
Emittance and entropy of electron beams
(Vanderbilt University. Department of Physics and Astronomy, 2014-04)
Creating high-brightness electron beams, which have many practical
applications, is done with cathodes in regions with large electric
field by field emission. The brightness is high when the current is
high and the ...
Probing Heavy Spin-2 Bosons with γγ final states from Vector Boson Fusion Processes at the LHC
(Vanderbilt University. Dept. of Physics and Astronomy, 2019)
New massive spin-2 particles are predicted in theoretical extensions to the Standard Model (SM) attempting to solve the hierarchy problem. Such theories postulate that gravity is diluted compared to the other fundamental ...
Real-time real-space density functional theory calculations of electron scattering in materials
(Vanderbilt University. Dept. of Physics and Astronomy, 2012-05-04)
Density functional theory is utilized in real-time,
real-space simulations of LEED measurements and attosecond electron
scattering. For LEED measurements, we find that our simulation results
agree well with experimental ...