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Search Publications

NIST Authors in Bold

Displaying 276 - 300 of 4633

Sensitivity of a Plate Pyroelectric Detector to Ambient Acoustic Noise: The Significance of the Perfectly-Clamped Mounting Condition

January 1, 2004
Author(s)
John H. Lehman, Harald Gnewuch, Chris Pannell
… The unwanted sensitivity of a plate pyroelectric detector to airborne acoustic noise is critically dependent on the mounting conditions for the plate. We consider a plate in an isotropic acoustic pressure field oscillating at … domain engineering, ferroelectric, mounting conditions, plate deformation, pyroelectric detector strain …

Historical Review of the Metered Section Area for Guarded Hot Plates

December 31, 2019
Author(s)
Robert R. Zarr, Stacy M. Bruss, David McElroy
… of the calculation techniques is presented for round plates having diameters from 250 mm to 1000 mm, a … are not negligible because large gaps (4 mm) on small plates (250 mm) can have an effect of 10 %, or more, on the … Review of the Metered Section Area for Guarded Hot Plates …

Design Concepts for a New Guarded Hot Plate Apparatus for Use Over an Extended Temperature Range

October 1, 2002
Author(s)
D R. Flynn, Robert R. Zarr, Mahn-Hee Hahn, William M. Healy
… of Standards and Technology is building a new guarded hot plate apparatus (GHP) for use at temperatures from 90 K to … thermometry wells, and sensor leads coming from the hot plate and the cold plates; provision of a system to provide a … between the specimens and the contacting hot and cold plate surfaces; provision of an accurate system for in-situ …

Thermal Modeling of Multiple-Line-Heat-Source Guarded Hot Plate Apparatus

October 1, 2002
Author(s)
William M. Healy, D R. Flynn
… and Technology is building an advanced-design guarded hot plate apparatus of advanced design to provide very accurate … errors and uncertainties. In an idealized guarded hot plate apparatus, the effective thermal conductivity is simply computed from the measured power input to the meter plate heater, the effective area of the meter plate, the …

Fast and robust quantum computation with Wigner crystals of ions

April 15, 2011
Author(s)
J D. Baltrusch, A Negretti, T Calarco, Jacob Taylor
… quantum phase gate implemented with Wigner crystals of ions confined in Penning traps. We elaborate on a recent … by two of us, to engineer two-body interactions between ions in such crystals. We analyze for the first time the … Fast and robust quantum computation with Wigner crystals of ions …

A chromium surface magneto-optical trap for magnetic microtrap studies

May 1, 2004
Author(s)
M Pichler, S Hill, Jabez J. McClelland
… A surface magneto-optical trap for chromium atoms is demonstrated as a first step … into microscopic magnetic traps. Characteristics of the trap and transfer to microscopic magnetic traps will be … A chromium surface magneto-optical trap for magnetic microtrap studies …

Reaction Mechanism Governing the Formation of 1,3-bis(diphenylphosphino)propane-protected Gold Nanoclusters

September 19, 2011
Author(s)
Jeffrey W. Hudgens, John M. Pettibone, Thomas P. Senftle, Ryan N. Bratton
… that can be manipulated to develop directed syntheses of gold monolayer protected clusters (MPCs) prepared by the … reaction classes, including dissolution of the gold precursor, reduction, continuous nucleation/core growth, … gold, cluster, nanoparticle, electrospray mass spectrometry, …

Fatigue Pre-Cracking Curved Wide Plates in Bending

September 27, 2010
Author(s)
Mark D. Richards, Timothy S. Weeks, Joseph D. McColskey, Bo Wang, Yong-Yi Wang
… closed form solutions for stress-intensity (K) for flat plates in bending can be used to approximate the K for CWP … Fatigue Pre-Cracking Curved Wide Plates in Bending …

The Mobilities of Ions and Cluster Ions Drifting in Polar Gas

April 1, 1997
Author(s)
J A. de Gouw, M Krishnamurthy, S R. Leone
… The mobility of ions drifting in polar gases is explored both theoretically … New expermental results are presented for (1) NO+ ions drifting in H 2 O (the resuced zero-field mobility K 0 … is 0.66+or-}0.07 cm 2 V -1 s -1 ), (2) H 3 O+(H6d2^O) 3 ions drifting in H 2 O (K 0 (0) =0.43+or-}0.06cm 2 V -1 s -1 …

Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization

January 1, 1999
Author(s)
R J. Goldschmidt, S Wetzel, William R. Blair, Charles M. Guttman
… Analyte ions produced in matrix-assisted laser desorption/ionization … little or no prompt fragmentation ofinitially formed ions. In many cases only intact molecular ions are observed in MALDI mass spectra. This is generally … Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization …

Quantum amplification of motion of a mechanical oscillator

June 21, 2019
Author(s)
Shaun C. Burd, Raghavendra Srinivas, John J. Bollinger, Andrew C. Wilson, David J. Wineland, Dietrich G. Leibfried, Daniel H. Slichter, David T. Allcock
… quantum noise. We implement this protocol with a trapped-ion mechanical oscillator and measure metrological … Quantum metrology, squeezing, trapped ion …

Formation of ssDNA Brushes With Controlled Spacing on Gold Substrates Using Block-Oligonucleotides

October 12, 2021
Author(s)
A Opdahl, D Y. Petrovykh, H Y. Kimura-Suda, L J. Whitman, Michael J. Tarlov
… and no additional chemical modifications, were adsorbed on gold substrates from aqueous buffer solution and … model where the d(An) blocks preferentially adsorb on the gold substrate and the d(Tm) blocks extend away from the … affinity than (dT) oligonucleotides for adsorbing on gold substrates (Kimura-Suda, H.; Petrovykh, D. Y.; Tarlov, …

Ion Optical Clocks and Quantum Information Processing

May 1, 2003
Author(s)
David J. Wineland, James C. Bergquist, Till P. Rosenband, Piet Schmidt, Wayne M. Itano, John J. Bollinger, Dietrich G. Leibfried, W Oskay
… Ion Optical Clocks and Quantum Information Processing …

Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity

January 15, 2017
Author(s)
Dustin A. Hite, Kyle S. McKay, Shlomi Salman Kotler, Dietrich G. Leibfried, David J. Wineland, David P. Pappas
… Electric-field noise from the surfaces of ion-trap electrodes couples to the ion’s charge causing heating of the ion’s motional modes. This heating limits the fidelity of … Measurements of trapped-ion heating rates with exchangeable surfaces in close …

Observation of the 1 S 0 - 3 P 0 clock transition in 27 Al +

June 1, 2007
Author(s)
Till P. Rosenband, P. O. Schmidt, David Hume, Wayne M. Itano, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Jeroen Koelemeij, James C. Bergquist, David J. Wineland
… 0 – 3 P 0 clock transition in 27 Al + . A single aluminum ion and a single beryllium ion are simultaneously confined in a linear Paul trap, coupled by their mutual Coulomb repulsion. This …

Quantum amplification of boson-mediated interactions

May 13, 2021
Author(s)
Shaun C. Burd, Raghavendra Srinivas, Hannah M. Knaack, Wenchao Ge, Andrew C. Wilson, David J. Wineland, Dietrich Leibfried, John J. Bollinger, David T. Allcock, Daniel Slichter
… of a boson-mediated interaction between two trapped-ion qubits by parametric modulation of the trapping … Squeezing, trapped ion, quantum information processing, entanglement …

Patterns of Ensemble Variation of the Optical Properties of ZnO Nanowires Grown with Copper and Gold Catalysts

March 19, 2009
Author(s)
Susie Eustis, Larry Robins, Babak Nikoobakht
… Analysis of the structural and optical properties of gold- and copper-catalyzed zinc oxide (ZnO) nanowires (NWs), … growth. The copper-catalyzed NWs are longer than the gold-catalyzed NWs; the NW length increases along the carrier … properties is more pronounced for copper-catalyzed than gold-catalyzed NWs. …

Two-Species Magneto-Optical Trap With 40 K and 87 Rb

January 1, 2002
Author(s)
J Goldwin, S Papp, B. L. DeMarco, D S. Jin
… We trap and cool a gas composed of 40 K and 87 Rb, using a two-species magneto-optical trap (MOT). This trap represents the first step towards cooling the Bose-Fermi … Two-Species Magneto-Optical Trap With 40 K and 87 Rb …

Interaction of Gold Nanoparticles with Common Human Blood Proteins

December 18, 2009
Author(s)
Silvia H. De Paoli Lacerda, Jung J. Park, Curtis W. Meuse, Denis Pristinski, Matthew Becker, Jack F. Douglas
… Gold nanoparticles (NPs) provide a promising platform for … to systematically investigate the interaction of gold NPs with common blood proteins in order to understand … and electron microscopy were performed on water soluble gold nanoparticles in a diameter range from 5 nm to 100 nm in …

Highly Charged Ion Bombardment of Silicon Surfaces

August 1, 2003
Author(s)
J E. Sanabia, S N. Goldie, L P. Ratliff, Lori S. Goldner, John D. Gillaspy
… In an attempt to verify these results, highly charged ion-irradiated silicon samples were prepared at the Electron Beam Ion Trap facility at the National Institute of Standards and … cross section, fluorescence, highly charged ion, photoluminescence, silicon … Highly Charged Ion Bombardment of Silicon Surfaces …

Fabrication of a Guarded-Hot-Plate Apparatus for Use Over an Extended Temperature Range and in a Controlled Gas Atmosphere

June 29, 2005
Author(s)
Robert R. Zarr, Daniel R. Flynn, John W. Hettenhouser, Nolan J. Brandenburg, William M. Healy
… This paper describes the fabrication of a guarded-hot-plate apparatus suitable for determining the steady-state … mm in diameter and from 13 mm to 100 mm in thickness. The plate size of 500 mm was selected based on recommendations … current international standard test method for guarded-hot-plate apparatus. The primary components of the apparatus, the …
Displaying 276 - 300 of 4633
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