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Displaying 5726 - 5750 of 9857

A Multiblock Technique for Simulating Fire and Smoke Spread in Large Complex Enclosures

June 21, 2003

Author(s)

Kuldeep R. Prasad, G P. Patnaik, Ravinder Nath

Several recent developments in computational techniques have been combined todevelop a tool for simulating the reactive flow field inside large complex enclosures.The multiblock technique was adopted to solve the unsteady compressible Navier-Stokes

Comparative Statistical Analysis of Test Parts Manufactured in Production Environments

June 1, 2002

Author(s)

David E. Gilsinn, Alice V. Ling

Estimating error uncertainties arising in parts produced on machine tools in production machine shops is not a well understood process. The current study details a process of estimating these error uncertainties. A part with significant features was

Optical Linewidth Models: Then and Now

June 1, 1999

Author(s)

Robert D. Larrabee, Richard M. Silver, M P. Davidson

In the late 1970's, Dr. Diana Nyyssonen demonstrated that NIST could optically calibrate photomask linewidth standards that were narrower than the classical resolution limit of a conventional bright-field microscope. She equated the known position of the

Causal Characteristic Impedance of Planar Transmission Lines

May 1, 2003

Author(s)

Dylan F. Williams, Bradley K. Alpert, Uwe Arz, Hartmut Grabinski

Abstract: We compute power-voltage, power-current, and causal definitions of the characteristic impedance of microstrip and coplanar-waveguide transmission lines on insulating and conducting silicon substrates, and compare to measurement.

Operator's Manual; Balance Automation Software for the NIST Mass Calibration Laboratory

July 1, 1998

Author(s)

Vincent J. Lee

This user's manual documents the use of the computer software written for the partial automation of the sub-1 Kg precision mass comparators and environmental instruments used in the Mass Group's mass calibration laboratory.

Dealing with counts and other quantal quantities in quantity calculus

January 1, 2023

Author(s)

David W. Flater

… that are constrained to exist in integral multiples of a quantum. A software application that treats these quantities …

Meta-grating outcouplers for optimized beam shaping in the visible

May 10, 2021

Author(s)

Chad Ropp, Alexander Yulaev, Daron Westly, Gregory Simelgor, Vladimir Aksyuk

… of many on-chip devices. This control is critical in quantum technologies where large-diameter beams with designed …

Josephson Arbitrary Waveform Synthesizer as Reference Standard for the Measurement of the Phase of Harmonics in Distorted Signals

July 7, 2018

Author(s)

Dimitrios Georgakopoulos, Ilya F. Budovsky, Samuel P. Benz, G. Gubler

… techniques, measurement standards, phase measurement, quantum voltage standards, spectrum analysis …

Minimally destructive, Doppler measurement of a quantized, superfluid flow

February 1, 2016

Author(s)

Avinash Kumar, Neil Anderson, William D. Phillips, Stephen P. Eckel, Gretchen K. Campbell, Sandro Stringari

… due to motion, is present in both classical gases and quantum superfluids. Here, we perform an in-situ, minimally …

AC Waveform Source Referenced to a Programmable Josephson Voltage Standard

August 24, 2014

Author(s)

Alain Rufenacht, Charles J. Burroughs, Bryan C. Waltrip, Stephane P. Solve, Paul D. Dresselhaus, Samuel P. Benz

… The objective is to provide a convenient, highly automated quantum-referenced source for ac voltage metrology that does …

Tunable resonant and nonresonant interactions between a phase qubit and LC resonator

March 26, 2014

Author(s)

Michael S. Allman

… We use a flux-biased radio frequency superconducting quantum interference device (rf SQUID) with an embedded …

Tunable Resonant and Nonresonant Interactions between a Phase Qubit and LC Resonator

March 26, 2014

Author(s)

Michael S. Allman, Jed D. Whittaker, Manuel C. Castellanos Beltran, Katarina Cicak, Fabio C. Da Silva, Michael DeFeo, Florent Q. Lecocq, Adam J. Sirois, John D. Teufel, Jose A. Aumentado, Raymond W. Simmonds

… We use a flux-biased radio frequency superconducting quantum interference device (rf SQUID) with an embedded …

Coexistence and Competition of the Short-Range Incommensurate Antiferromagnetic Order with Superconductivity in BaFe 2-x Ni x As 2

June 12, 2012

Author(s)

Huiqian Luo, Rui Zhang, Mark Laver, Zahra Yamani, Meng Wang, Xingye Lu, Miaoyin Wang, Yanchao Chen, Shiliang Li, Sung Chang, Jeffrey W. Lynn, Pengcheng Dai

… In addition, we find no evidence for a magnetic quantum critical poing between the A and superconducting …

Electronic properties of multilayer graphene

March 31, 2012

Author(s)

Hongki Min

… a conserved chirality sum. We discuss its implications in Quantum Hall effect, optical conductivity, transport …

Ultra Sensitive NIR Spectrometer Based on Frequency Up-conversion Detector

April 7, 2010

Author(s)

Lijun Ma, Oliver T. Slattery, Xiao Tang

… spectrometer, and use it to study a fiber-based quantum communication system. …

Measurement of the D Line Doublet in High-Z Highly-Charged Sodium-like Ions

July 8, 2009

Author(s)

John D. Gillaspy, Ilija Draganic, Yuri Ralchenko, Joseph Reader, Joseph N. Tan, Joshua M. Pomeroy, Samuel M. Brewer

… into account the effects of relativistic correlation and quantum electrodynamics. We also report the measured …

The Challenge of Measuring Defects in Nanoscale Dielectrics

May 26, 2008

Author(s)

Kin P. Cheung, John S. Suehle

… of MOS devices can exchange charges with the substrate via quantum mechanical tunneling. This characteristic has been …

The Mott Insulator Transition in a Two Dimensional Atomic Bose Gas

February 22, 2007

Author(s)

Ian B. Spielman, William D. Phillips, James V. Porto

… confined in periodic potentials are remarkably versatile quantum systems for implementing simple models prevalent in …

Heralding of telecommunication photon pairs with a superconducting single photon detector

July 19, 2006

Author(s)

Martin A. Jaspan, Jonathan L. Habif, Sae Woo Nam, Robert Hadfield

… in the visible regime. The extension of a photonic quantum information link to a fiber optical network requires …

Molecular simulation of the diffusivity of NaOH in steam

June 1, 2005

Author(s)

Allan H. Harvey, Raymond D. Mountain

… potential parameters and molecular parameters based on quantum calculations was used for the NaOH molecule. The …

Microwave SQUID multiplexer

September 13, 2004

Author(s)

Kent D. Irwin, Konrad Lehnert

… We describe a superconducting quantum interference device (SQUID) multiplexer operated at …

Phase, timing and amplitude noise on supercontinua generated in microstructure fiber

May 17, 2004

Author(s)

Brian Washburn, Nathan R. Newbury

… amplitude noise on the frequency comb resulting from input quantum noise, including the scaling of the noise with …

Banishing Quasiparticles From Josephson-Junction Qubits: Why and How To Do It

June 1, 2003

Author(s)

Kristine Lang, Sae Woo Nam, Joe Aumentado, John M. Martinis, C Urbina

… junctions are prime candidates for the implementation of quantum bits; however, a present limitation is their …

Application of First-Principles Calculations to the Correlation of Water's Second Virial Coefficient

January 1, 2000

Author(s)

Allan H. Harvey

… his is due to a combination of the neglect of higher-order quantum corrections and the imperfection of the pair …

Use of Relativistic Effective Core Potentials in the Calculation of Total Electron-Impact Ionization Cross Sections

January 1, 2000

Author(s)

W M. Huo, Yong Sik Kim

… is re-examined when the target is an atom with principal quantum number n is greater than or equal to 3, or a molecule …

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