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NIST Authors in Bold

Displaying 2801 - 2825 of 3362

Analysis of Wasp Waist Hysteresis Loops

January 3, 2005
Author(s)
Lawrence H. Bennett, Edward Della Torre
Wasp-waist and pot belly hysteresis loops have been observed in many materials. When only the major loop is reported, the results are insufficient to establish which processes are involved. We present two models for wasp waist materials that produce

Liquid state NMR simulations of quantum many-body problems

January 1, 2005
Author(s)
C. Negrevergne, Rolando Somma, Gerardo Ortiz, Emanuel Knill, R. Laflamme
Recently developed quantum algorithms suggest that in principle, quantum computers (QCs) can solve problems such as simulation of physical systems more efficiently than classical computers. As a small- scale demonstration of this capability of quantum

Coercivities above 10 kOe in CoPd Superlattices

January 1, 2004
Author(s)
William F. Egelhoff Jr., Cedric J. Powell, L Gan, P J. Chen, H Ettendgui, D Tirosh, Robert McMichael, Mark D. Stiles, J Mallett, Alexander J. Shapiro, John E. Bonevich
We have achieved excellent grain isolation in CoPd superlattices by using 10 nm Au as both an underlayer and an overlayer and diffusing Au into the grain boundaries by annealing for approximately equal to} 30 min. at 300 degrees C. The grain isolation

Electrical Properties of Biological Materials: A Bibliographic Survey

October 1, 2000
Author(s)
Ken L. Stricklett, J. Baker
A bibliographic survey of the electrical properties of biological tissues and of phantoms is provided. A phantom is, for these purposes, any material, structure, or system that is intended to emulate the electrical properties of biological tissues

Coercivities Above 10 kOe in CoPd Superlattices

Author(s)
William F. Egelhoff Jr., Cedric J. Powell, L Gan, P J. Chen, H Ettedgui, D Tirosh, Robert D. McMichael, Mark D. Stiles, J Mallett, Alexander J. Shapiro, John E. Bonevich, J H. Judy, Erik B. Svedberg, A. E. Berkowitz
We have achieved excellent grain isolation in CoPd superlattices by using 10 nm Au as both an underlayer and an overlayer and diffusing Au into the grain boundaries by annealing for {approximately equal to} 30 min. at 300 degrees C. The grain isolation

Stochastic Modeling and Estimation in a Neutron Lifetime Experiment

January 1, 2007
Author(s)
Yang G. L., Kevin Coakley
A team of researchers demonstrated at the National Institute of Standards and Technology Cold Neutron Research Facility for the first time that ultra cold neutrons can be confined in a magnetic trap filled with liquid helium. This technical breakthrough

Proposed Rapid Cooldown Technique for Pulse Tube Cryocoolers

June 14, 2006
Author(s)
Ray Radebaugh, Agnes O?Gallagher, Michael A. Lewis, Peter E. Bradley
Some cryocooler applications, such as those for military operations dealing with high temperature superconducting (HTS) magnets, motors, or generators, require faster cooldown times than what can normally be provided with a cryocooler designed to

Model for Exchange Bias in Polycrystalline Ferromagnet-Antiferromagnet Bilayers

February 1, 1999
Author(s)
Mark D. Stiles, Robert D. McMichael
Polycrystalline ferromagnet-antiferromagnet bilayers exhibit a wide range of interesting magnetic effects. This paper describes a model for these bilayers which explains not only the unidirectional anisotropy that gives rise to the well known shifted

Effect of Interface Properties on Microcracking of Iron Titanate

January 1, 1998
Author(s)
A Saigal, Stephen A. Langer, W Carter, M H. Zimmerman, K T. Faber, Lin-Sien H. Lum
It has been shown both experimentally and theoretically that mechanical properties are strongly dependent on the grain size in single-phase polycrystalline ceramics with large thermal expansion anisotropy [1,2]. This dependence is related to the residual

A New Spin on Kibble: A Self Calibrating Torque Realization Device at NIST

June 3, 2022
Author(s)
Zane Comden, Stephan Schlamminger, Charles Waduwarage Perera, Frank Seifert, David B. Newell, Jay H. Hendricks, Barbara L. Goldstein, Leon Chao
… instrument mainly consisting of a tabletop-sized permanent magnet-electromagnet system aimed at generating 1 mN m to 1 N …

Design and Testing of Wireless Motion Gauges for Two Collaborative Robot Arms

March 11, 2022
Author(s)
Yong Sik Kim, Nicholas G. Dagalakis, Jeremy Marvel, Geraldine S. Cheok
Most existing robot performance evaluation methods focus on single robotic arms performing independent motion tasks. In this paper, a motion gauge is proposed to evaluate the symmetrical coordinated-motion performance between two robotic arms. For this

Modeling motional energy spectra and lattice light shifts in optical lattice clocks

May 8, 2020
Author(s)
Kyle Beloy, Will McGrew, Xiaogang Zhang, Daniele Nicolodi, Robert J. Fasano, Youssef Hassan, Roger Brown, Andrew Ludlow
We develop a model to describe the motional (i.e., external degree of freedom) energy spectra of atoms trapped in a one-dimensional optical lattice, taking into account both axial and radial confinement relative to the lattice axis. Our model respects the
Displaying 2801 - 2825 of 3362
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