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Search Publications

NIST Authors in Bold

Displaying 2076 - 2100 of 9850

Matching Observed Alpha Helix Lengths to Predicted Secondary Structure

November 1, 2009
Author(s)
Brian D. Cloteaux, Nadezhda Serova
Because of the complexity in determining the 3D structure of a protein, the use of partial information determined from experimental techniques can greatly reduce the overall computational expense. We investigate the problem of matching experimentally

Probing the timescale of the exchange interaction in a ferromagnetic alloy

January 27, 2012
Author(s)
Justin M. Shaw, Stefan Mathias, Chan La-O-Vorakiat, Hans T. Nembach, Thomas J. Silva, Mark Siemens, Henry Kapteyn, Margaret Murnane
… with Cu. This measurement probes how the fundamental quantum mechanical exchange coupling between Fe and Ni in … ultra-fast, magnetism, quantum …

An Efficient Approach to Assessing the Risk of Zero-Day Vulnerabilities

July 31, 2013
Author(s)
M. Albanese, Sushil Jajodia, Anoop Singhal, Lingyu Wang
… metric, has been defined. However, existing algorithms for computing this metric are not scalable, and assume that … safety of possibly large networks efficiently, without pre-computing the entire attack graph. We validate our approach …

Reply to Comment on "Testing Three-body Quantum Electrodynamics with Trapped Ti20+ Ions: Evidence for a Z-Dependent Divergence between Experiment and Calculation"

April 12, 2013
Author(s)
Lawrence T. Hudson, C T. Chantler, M N. Kinnane, John D. Gillaspy, A.T. Payne, L F. Smale, Albert Henins, Joshua M. Pomeroy, J A. Kimpton, E Takacs, K Makonyi
… x-ray spectroscopy, quantum electrodynamics … Reply to Comment on "Testing Three-body Quantum Electrodynamics with Trapped Ti20+ Ions: Evidence for …

Engineering Time-Reversal Invariant Topological Insulators With Ultra-Cold Atoms

December 16, 2010
Author(s)
Ian B. Spielman, Nathan Goldman, Indubala I. Satija, Predrag Nikolic, Alejandro Bermudez, Miguel A. Martin-Delgado, Maciej Lewenstein
… these phases violated time-reversal symmetry, such as the quantum Hall states. However, the discovery of the quantum spin Hall effect in HgTe quantum wells and Bi 2 Te d3, demonstrated the existence of …

Reaction Mechanism of Chorismate Mutase Studied by the Combined Potentials of Quantum Mechanics and Molecular Mechanics

November 21, 2002
Author(s)
Y. S. Lee, S. E. Worthington, Morris Krauss, B R. Brooks
… environment while treating the reaction with ab initio quantum chemistry. In addition to the reactant, chorismate, … the side-chains of glu78 and arg90 are included in the quantum region to explore whether the strong ionic hydrogen … of Chorismate Mutase Studied by the Combined Potentials of Quantum Mechanics and Molecular Mechanics …

XTDB, an XML based format for Calphad databases

April 15, 2025
Author(s)
Bo Sundman, Fabio Miani, Axel van de Walle, Bengt Hallstedt, Ursula Kattner, Florian Tang, Taichi Abe, Reza Naraghi, Erwin Povoden-Karadeniz, Aurelie Jacob, Shuanglin Chen, Richard Otis, Kazuhisa Shobu, Malin Selleby, Alexander Pisch
The Calphad method uses models which depend on assessed parameters to describe the thermodynamic properties of materials. These model parameters are assessed by researchers and students mainly from experimental data on binary and ternary systems which can

Entangling Light in its Spatial Degrees of Freedom with 4-Wave Mixing in an Atomic Vapor

February 18, 2009
Author(s)
Vincent Boyer, Alberto M. Marino, Raphael C. Pooser, Paul D. Lett
… in subtle correlations that exist in the unavoidable quantum fluctuations of the amplitudes and the phases of the … from noise-free imaging and improved position sensing to quantum information processing. … mixing, nonlinear optics, quadrature entanglement, quantum imaging, spatial entanglement, squeezed light …

OpenCalphad thermodynamic software interface including parallelization

September 12, 2016
Author(s)
Bo Sundman, Ursula R. Kattner, Christophe Sigli, Matthias Stratmann, Romain Le Tellier, Mauro Palumbo, Suzana G. Fries
Thermodynamic data are needed for all kind of simulations of materials processes. For example, for kinetic models thermodynamic quantities, such as chemical potentials, driving forces for precipitation, thermodynamic factors for converting mobilities to

Using a High-Value Resistor in Single-Electron Counting Measurements

June 1, 2002
Author(s)
Randolph Elmquist, Neil M. Zimmerman, William Huber
… the aim of improving the experimental link between three quantum electrical standards. This technique is new in its … Josephson Effect, Quantum Hall effect, Resistance Measurements, Single-electron …

A significant-loophole-free test of Bell's theorem with entangled photons

December 16, 2015
Author(s)
Marissa Giustina, Marijn Versteegh, Soren Wengerowsky, Johannes Handsteiner, Armin Hochrainer, Kevin Phelan, Fabian Steinlechner, Johannes Koffler, Larsson Jan-Ake, Carlos Abellan, Waldimar Amaya, Valerio Pruneri, Morgan Mitchell, Joern Beyer, Thomas Gerrits, Adriana Lita, Krister Shalm, Sae Woo Nam, Thomas Scheidl, Rupert Ursin, Bernhard Wittmann, Anton Zeilinger
… this worldview is incompatible with the predictions of quantum mechanics, as is expressed in Bell's inequalities. … Previous experiments convincingly supported the quantum predictions. Yet, every experiment performed to date … free Bell test, local realism, fundamental tests of quantum mechanics, transition edge sensors …

EEEL Technical Accomplishments

March 30, 2009
Author(s)
Erik M. Secula
… and single-photon detectors that test the limits of quantum information. Our scientists and engineers are leading … optoelectronics, semiconductors, electromagnetics, quantum electrical …

Second Chern number of a quantum-simulated non-Abelian Yang monopole

June 29, 2018
Author(s)
Ian B. Spielman, Francisco Salces Carcoba, Yuchen Yue, Abigail Perry, Seiji Sugawa
… inspired by concepts from high-energy physics, we use quantum simulation based on the spin degrees of freedom of … Second Chern number of a quantum-simulated non-Abelian Yang monopole …

Evaluating Entity-Based Sensemaking Tools for Intelligence Analysis

October 24, 2007
Author(s)
Eric Bier, Theresa O'Connell, Yee-Yin Choong, Christiaan Royer, Randy Gobbel
Intelligence analysts regularly face difficult tasks. Given many potentially relevant documents and facts, they must find the most relevant, organize them, and make sense of them. New software technologies are being developed to help. Given the complexity

A Model of Cerificate Revocation

December 1, 1999
Author(s)
David A. Cooper
This paper presents a model for the distribution of revocation information using certificate revocation lists (CRLs). This model is used to highlight inefficiencies in the traditional method of distribution certificate status information using CRLs. Two

Benchmark Data for Fuel Atomization and Combustion Models

August 1, 1999
Author(s)
J F. Widmann, S R. Charagundla, Cary Presser
Experimental data were collected for the purpose of validating multiphase combustion models and submodels. A spray combustor was fabricated that permits well-defined boundary and input conditions, and measurements were carried out that characterize the

High-speed low-power neuromorphic systems based on magnetic Josephson junctions

October 25, 2018
Author(s)
Michael Schneider, Christine A. Donnelly, Stephen E. Russek
… Josephson junctions and single flux quantum (SFQ) circuits form a natural neuromorphic technology … a voltage pulse with an integrated amplitude of a flux quantum ϕ_0=h/(2e^2 )=2.068 x 〖10〗^(-15) Vs. The coupling … neuromorphic, Josephson junction, single flux quantum …
Displaying 2076 - 2100 of 9850
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