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Displaying 2451 - 2475 of 4635

Ralaxometry and Magnetometry of Ferritin

December 1, 1998
Author(s)
R A. Brooks, J Vymazal, Ronald B. Goldfarb, J W. Bulte, P Aisen
By combining nuclear magnetic ralaxometry on 39 ferritin samples with different iron loading with magnetometry, results were obtained that suggest a new interpretation of the core structure and magnetic properties of ferritin. These studies provide

Nano- and Atom-scale Length Metrology

October 1, 2010
Author(s)
Theodore V. Vorburger, Ronald G. Dixson, Ndubuisi G. Orji, Joseph Fu, Richard A. Allen, Michael W. Cresswell, Vincent A. Hackley
… nanometrology among national measurement institutes, and gold-nanoparticle Reference Materials with nominal sizes of …

Vacuum-Gap Capacitors for Low-Loss Superconducting Resonant Circuits

June 16, 2009
Author(s)
Katarina Cicak, Michael S. Allman, Joshua Strong, Kevin Osborn, Raymond W. Simmonds
Low-loss microwave components are used in many superconducting resonant circuits from multiplexed readouts of low-temperature detector arrays to quantum bits. Two-level system (TLS) defects in amorphous dielectric materials cause excess energy loss. In an

Extended EUV and UV Spectrum of Ne II

July 1, 2006
Author(s)
Alexander Kramida, C M. Brown, Uri Feldman, Joseph Reader
The extreme ultraviolet (EUV) spectrum of Ne emitted by a Penning discharge has been recorded at high resolution with a 10.7 m grazing incidence spectrometer. Based on the recorded spectra 75 new Ne II lines have been observed between 286 and 325

Size-Monodisperse Metal Nanoparticles Via Hydrogen-Free Spray Pyrolysis

April 3, 2002
Author(s)
Jung Hyeun Kim, Thomas A. Germer, George Mulholland, S H. Ehrman
Pure copper nanoparticles were produced using a co-solvent approach avoiding use of hydrogen or other reducing gas. Compared with the particles formed without the co-solvent, the addition of alcohol has a significant effect in preventing oxidation, which

A Phase-Field Model of Convection with Solidification

January 1, 2002
Author(s)
D M. Anderson, Geoffrey B. McFadden, A A. Wheeler
A phase-field model for the solidification of a pure material that incorporates convection has recently been developed. This model is a two-fluid model in which the solid phase is modeled as a sufficiently viscous fluid. The model allows for the solid and

Deconvoluting the Influences of 3D Structure on the Performance of Photoelectrodes for Solar-Driven Water Splitting

February 7, 2017
Author(s)
Daniel V. Esposito, Youngmin Lee, Heayoung Yoon, Paul M. Haney, Natalie Labrador, Thomas P. Moffat, A. A. Talin, Veronika A. Szalai
… diameter, pitch, and height were fabricated by reactive ion etching (RIE). A general framework for modeling the … photoelectrodes, 3-dimensional photoelectrodes, reactive ion etching (RIE), silicon, micro-pillar arrays, scanning …

Development and Application of Multiple D-Layer Reference Materials for Semiconductor Analysis

January 1, 2005
Author(s)
K J. Kim, D Moon, P Chi, David S. Simons
… elements in narrower and shallower regions. Secondary ion mass spectrometry (SIMS) is the most popular technique … junctions. Multiple delta-layers (MDL) were developed by ion beam sputter deposition to enhance the analysis … 3 different depths were formed by sputtering with a Cs ion beam. The crater depths measured by a stylus profilometer …

Differential Light Shift Cancellation in a B-Field Insensitive Transition of 87Rb

February 11, 2011
Author(s)
Radu S. Chicireanu, Karl D. Nelson, Steven M. Olmschenk, Nathan Lundblad, A. Derevianko, James V. Porto
We demonstrate substantial cancellation of the differential light shift of a magnetic-field-insensitive microwave hyperfine (clock) transition in 87Rb atoms trapped in an optical lattice. Up to 95.5% of the differential light shift is cancelled while
Displaying 2451 - 2475 of 4635
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