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Displaying 27101 - 27125 of 74105

Accurate Picoscale Forces for Insitu Calibration of AFM

September 3, 2009
Author(s)
Koo-Hyun Chung, Gordon A. Shaw, Jon R. Pratt
The force sensitivity of an atomic force microscope is calibrated directly using an in situ realization of primary electrostatic forces ranging from 320 pN to 3.3 nN with accuracy of a few percent. The absolute accuracy of a common atomic force microscope

Microfabricated multispectral MRI agents: a brief overview

September 3, 2009
Author(s)
Gary Zabow
This paper provides an introductory overview on recent top-down microfabricated, as opposed to traditional bottom-up chemically synthesized, magnetic resonance imaging (MRI) contrast agents. As a specific example of the enhanced agent functionality that

Optical Properties of Rod-like Metallic Nanostructures: Insight from Theory and Experiment

September 3, 2009
Author(s)
Jinsong Duan, Kyoungweon Park, Robert I. MacCuspie, Richard A. Vaia, Ruth Pachter
In this work, we combined synthesis of metal Au and Au-Ag core-shell NRs, of high-purity and for a broad range of NR aspect ratios, with theoretical prediction, in order to gain an understanding of the optical response. Self-assembled NRs were also

Quantum Correlated Light Beams from NonDegenerate FourWave Mixing in an Atomic Vapor: the D1 and D2 Lines of ^85Rb and ^87Rb

September 3, 2009
Author(s)
Raphael C. Pooser, Alberto M. Marino, Vincent N. Boyer, Kevin M. Jones, Paul D. Lett
We present experimental results showing that quantum correlated light can be produced using non-degenerate, off-resonant, four-wave mixing (4WM) on both the D1 (795 nm) and D2 (780 nm) lines of ^85Rb and ^87Rb, extending earlier work on the D1 line of

Assessing the Measurement Uncertainty of Thermophysical Properties

September 2, 2009
Author(s)
Robert R. Zarr
A generalized approach for the expression of measurement uncertainty consistent with current international practice is presented. The approach is applicable to all kinds of quantitative measurements including measurements of thermophysical properties. A

International Comparison on Thermal Conductivity Measurements of Insulating Materials by Guarded Hot Plate

September 2, 2009
Author(s)
Bruno Hay, Leonel Lira Cortes, Benoit Doucey, Jean Remy Filtz, Nikolay Sokolov, Clark Stacey, Robert R. Zarr, Jintao Zhang
An inter-laboratory comparison on thermal conductivity measurements of insulating materials is currently organized under the auspices of the Bureau International des Poids et Mesures (BIPM). Thermal conductivity measurements are carried out by seven

Time and Frequency Users Manual

September 2, 2009
Author(s)
Michael A. Lombardi
This book is for the person who needs information about making time and frequency measurements. It is written at a level that will satisfy those with a casual interest as well as laboratory engineers and technicians who use time and frequency every day. It

Toward a standard on the wind tunnel method

September 2, 2009
Author(s)
Emil Simiu
This document is intended to provide practicing engineers and building code officials with a technical resource that (i) describes current practices for the testing of buildings and other structures in flows simulating natural winds, (ii) provides a basis

A New 26plex Autosomal STR Assay to Aid Human Identity Testing*(dagger)

September 1, 2009
Author(s)
Carolyn R. Steffen, John M. Butler, Peter Vallone
Multiplex polymerase chain reaction (PCR) has become the standard in forensic testing. Currently there are two commercial multiplex PCR amplification kits available that simultaneously amplify 16 short tandem repeat (STR) loci that include the 13 FBI

Analog BIST Functionality for Microhotplate Temperature Sensors

September 1, 2009
Author(s)
Muhammad Y. Afridi, Christopher B. Montgomery, Elliott cooper-Balis, Stephen Semancik, Kenneth G. Kreider, Jon C. Geist
In this paper we describe a novel microhotplate temperature sensor calibration technique suitable for Built-In Self Test. The technique only requires short-term temperature stability from the four-wire polysilicon heater/temperature sensors that are

Eigenpath Traversal by Phase Randomization

September 1, 2009
Author(s)
S. Boixo, Emanuel Knill, Rolando Somma
A computation in adiabatic quantum computing is achieved by traversing a path of nondegenerate eigenstates of a continuous family of Hamiltonians. We introduce a method that traverses a discretized form of the path: at each step we evolve with the

First-Principles Calculation of the Third Virial Coefficient of Helium

September 1, 2009
Author(s)
Allan H. Harvey, Giovanni Garberoglio
Knowledge of the pair and three-body potential-energy surfaces of helium is now sufficient to allow calculation of the third density virial coefficient, C(T), with significantly smaller uncertainty than that of existing experimental data. In this work, we

High-efficiency photon-number resolving detectors based on hafnium transition-edge sensors

September 1, 2009
Author(s)
Adriana E. Lita, Brice R. Calkins, Lenson Pellouchoud, Aaron J. Miller, Sae Woo Nam
Generation of non-classical states of light is at the foundation of numerous quantum optics experiments and optical quantum information processing implementations. One such non-Gaussian optical quantum state can be obtained by photon subtraction from a

Information Management Gaps for Board Fabrication and Assembly

September 1, 2009
Author(s)
Eric D. Simmon, Jeff Pettinato
There are a number of driving forces that are impacting the information management needs of the board fabrication and assembly segments. The electronics industry is expanding beyond traditional industry boundaries at the same time it is shifting to a
Displaying 27101 - 27125 of 74105