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Suppression of Zeeman Relaxation in Cold Collisions of \(^2P_{1/2}\) Atoms
(American Physical Society, 2009)
We present a combined experimental and theoretical study of angular momentum depolarization in cold collisions of \(^2P\) atoms in the presence of an external magnetic field. We show that collision-induced Zeeman relaxation ...
One Solution to the Arsenic Problem: A Return to Surface (Improved Dug) Wells
(International Centre for Diarrhoeal Disease Research, Bangladesh, 2006)
Arsenic contamination in drinking-water in Bangladesh is a major catastrophe, the consequences of which exceed most other man-made disasters. The national policy encourages the use of surface water as much as possible ...
Qubit Protection in Nuclear-Spin Quantum Dot Memories
(American Physical Society, 2009)
We present a mechanism to protect quantum information stored in an ensemble of nuclear spins in a semiconductor quantum dot. When the dot is charged the nuclei interact with the spin of the excess electron through the ...
Base Dependent DNA-carbon Nanotube Interactions: Activation Enthalpies and Assembly-disassembly Control
(Institute of Physics, 2009)
We quantify the base dependent interactions between single stranded DNA and single walled carbon nanotubes (SWNTs) in solution. DNA/SWNT hybrids hold the promise of applications ranging from nanoscale electronics and ...
Mechanism of Collisional Spin Relaxation in \(^3\)Σ Molecules
(American Physical Society, 2009)
We measure and theoretically determine the effect of molecular rotational splitting on Zeeman relaxation rates in collisions of cold \(^3\)Σ molecules with helium atoms in a magnetic field. All four stable isotopomers of ...
Coexistence of the Meissner and Vortex States on a Nanoscale Superconducting Spherical Shell
(American Physical Society, 2009)
We show that on superconducting spherical nanoshells, the coexistence of the Meissner state with a variety of vortex patterns drives the phase transition to higher magnetic fields. The spherical geometry leads to a ...
The New Iron Age
(Nature Publishing Group, 2008)
The discovery of a new class of high-temperature superconductors based on iron tests the limits of current theoretical and computational tools for the understanding of strongly correlated systems.
Strategy and Enhanced Temperature Determination in a Laser Heated Diamond Anvil Cell
(American Institute of Physics, 2009)
We show that a strategy for increased accuracy in temperature determination by optical pyrometry when the wavelength dependence of the emissivity is unknown is to measure the spectral irradiance at short wavelengths. We ...
Thermionic Emission and a Novel Electron Collector in a Liquid Helium Environment
(American Institute of Physics, 2009)
We study two techniques to create electrons in a liquid helium environment. One is thermionic emission of tungsten filaments in a low temperature cell in the vapor phase with a superfluid helium film covering all surfaces; ...
Envelope Structure of Synechococcus sp. WH8113, A Nonflagellated Swimming Cyanobacterium
(BioMed Central, 2001)
Background: Many bacteria swim by rotating helical flagellar filaments [1]. Waterbury et al. [15] discovered an exception, strains of the cyanobacterium Synechococcus that swim without flagella or visible changes in shape. ...