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Search Publications

NIST Authors in Bold

Displaying 201 - 225 of 4632

Quantum Computing with Very Noisy Devices

February 13, 2007
Author(s)
Emanuel H. Knill
… This lecture was presented at the Workshop on Trapped Ion Quantum Computing hosted by NIST, February 21 - 24, 2006. … Workshop on Trapped Ion Quantum Computing hosted by NIST …

Preparation and coherent manipulation of pure quantum states of a single molecular ion

May 11, 2017
Author(s)
Chin-Wen Chou, Christoph Kurz, David B. Hume, Philipp N. Plessow, David R. Leibrandt, Dietrich G. Leibfried
… broad range of molecular ions. We trap a single molecular ion in a linear Paul trap together with a single atomic ion. Using two laser beams far off-resonance, we drive Raman … that simultaneously change the state of the molecular ion and excite the shared motion of the two ions in the trap. …

Measurement of Wavelengths With Phosphor Storage Image Plates at Grazing-Incidence

October 16, 2008
Author(s)
Joseph Reader, Uri Feldman, Charles Brown
… spectrograph using phosphor storage image plates were carried out. The spectra were emitted by a Ne/Mg … the 150-450 range. We found that by using flexible steel plates to back the image plates on the focal surface of the concave grating and by … grazing-incidence spectrograph, image plates, penning discharge, wavelength measurements …

Buckling of steel gusset plates

Author(s)
Chiara Crosti, Dat Duthinh
… 2007, FHWA issued guidelines for the load rating of gusset plates and recommended that the capacity of these plates on non-load-path-redundant steel truss bridges be … paper is to examine the buckling behavior of steel gusset plates in greater detail, accounting for parameters that were …

A Focused Chromium Ion Beam

October 21, 2010
Author(s)
Adam V. Steele, Brenton J. Knuffman, Jabez J. McClelland, Jon Orloff
… With the goal of expanding the capabilities of focused ion beam microscopy and milling systems, we have demonstrated … of chromium ions produced in a magneto-optical trap ion source (MOTIS). Neutral chromium atoms are captured into … to energies between 0.5 keV and 3 keV. The accelerated ion beam is scanned with a dipolar deflector and focused onto …

Surface-Enhanced Raman Spectroscopy via Gold Nanostars

September 28, 2008
Author(s)
Emren Nalbant-Esenturk, Angela R. Hight Walker
… Raman Spectroscopy (SERS). Branched and star-shaped gold nanoparticles have been prepared in aqueous phase by … growth methos by using 10nm, commercially available, gold colloid solution. Characterization of the nanostars was … measurements for 2-Mercaptopyridine adsorbed on aggregated gold nanostars show a larger enhancement than 2-MPy on …

Tunable spin-spin interactions and entanglement of ions in separate controlled potential wells

August 7, 2014
Author(s)
Andrew C. Wilson, Yves Colombe, K. R. Brown, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland
… of a configurable quantum simulator based on atomic ions. 7 Two ions are trapped in separate potential wells that can … a number of different spin-spin couplings mediated by the ions' Coulomb interaction together with classical laser and … processing, quantum entanglement, trapped atomic ions …

Minimization of ion micromotion in a Paul trap

January 1, 1998
Author(s)
D J. Berkeland, J D. Miller, James C. Bergquist, Wayne M. Itano, David J. Wineland
… micromotion. The first relies on the change of the average ion position as the trap potentials are changed. The second monitors the … Minimization of ion micromotion in a Paul trap …

A Study of Metal Truss Plate Connectors When Exposed to Fire

January 1, 2007
Author(s)
Kelly A. Harman, James R. Lawson
… The popularity of lightweight, metal plate connected wood truss construction is increasing due to … In an attempt to determine the performance of metal plate wood truss connections during fire exposures, NIST … the thermal exposure. Load carrying ability of the metal plate truss connections was not measured during these tests. …

High-Temperature Guarded Hot Plate Apparatus Control of Edge Heat Loss

June 1, 2005
Author(s)
Daniel R. Flynn, William M. Healy, Robert R. Zarr
… The guarded hot plate (GHP) apparatus is the most common type of absolute … of thermal insulation. As the name implies, the hot meter plate is surrounded by a coplanar guard plate, separated by a narrow guard gap, that is held at a … edge guard, guarded hot plate, high temperature …

Probing the Structure, Composition and Spatial Distribution of Ligands on Gold Nanorods

August 20, 2015
Author(s)
Michael J. A. Hore, Xingchen Ye, Jamie Ford, Yuzhi Gao, Jiayang Fei, Qiong Wu, Stuart J. Rowan, Russell J. Composto, Christopher B. Murray, Boualem Hammouda
… structure and size of ligands attached to the surfaces of gold nanorods, such as adsorbed surfactants or grafted … (SANS) measurements from surfactant or polymer coated gold nanorods in solution, which quantitatively determine the … of these surface layers. In addition, by synthesizing gold nanorods using seed crystals which are coated with …

A Lectin-Based Gold Nanoparticle Assay for Probing Glycosylation of Glycoproteins

April 17, 2012
Author(s)
Germarie Sanchez-Pomales, Todd A. Morris, James Falabella, Michael J. Tarlov, Rebecca A. Zangmeister
… to probe the glycans of glycoproteins that are adsorbed on gold nanoparticles. A model mannose-presenting glycoprotein, … found to adsorb spontaneously and non-specifically to bare gold nanoparticles such that glycans were accessible for … as concanavalin A (Con A), to a solution of the modified gold nanoparticles resulted in cross-linking of the …

Recent Results in Trapped-Ion Quantum Computing at NIST,

January 1, 2001
Author(s)
D Kielpinski, A Ben-kish, Joseph W. Britton, V Meyer, M A. Rowe, C A. Sackett, Wayne M. Itano, C Monroe, David J. Wineland
… and decoherence-free subspaces in a quantum register of trapped 9Be+ ions. … Recent Results in Trapped-Ion Quantum Computing at NIST, …

Spectroscopic analysis of M- and N-intrashell transitions in Co-like to Na-like Yb ions

December 19, 2021
Author(s)
Yuri Ralchenko, Dipti Goyal, Roshani Silwal, Endre Takacs, Joan Dreiling, Samuel Sanders, Amy Gall, Hemalatha Rudramadevi, John Gillaspy
… spectra from Co-like Yb$^43+}$ through Na-like Yb$^59+}$ ions produced in an electron beam ion trap (EBIT) at the … and magnetic-dipole transitions in the above mentioned ions were identified and discussed. … M- and N-intrashell transitions in Co-like to Na-like Yb ions …

Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model

January 13, 2012
Author(s)
Nicole M. Schaeublin, Laura K. Braydich-Stolle, Elizabeth I. Maurer, Kyoungweon Park, Robert I. MacCuspie, A R M N. Afrooz, Navid B. Saleh, R.A. Vaia, Saber Hussain
… Gold nanomaterials (AuNMs) have distinctive electronic and … highly uniform 16.7 nm diameter and 43.8 nm long pegylated gold nanorods (AuNR-PEGs) with low fractal dimension (Df = … occurring at 25 µg/mL and higher. The uniform 20 nm gold nanospheres coated with mercaptopropane sulfonate …

Spectroscopy Using Quantum Logic

July 29, 2005
Author(s)
Piet Schmidt, Till P. Rosenband, C. Langer, Wayne M. Itano, James C. Bergquist, David J. Wineland
… with trapped atomic ions, an auxillary "logic" ion provides sympathetic laser cooling, state initialization, … and detection for simultaneously trapped "spectroscopy" ion. Detection is achieved by applying a mapping operation on each ion, which results in a coherent transfer of the spectroscopy …

Scalable Entanglement of Trapped Ions

January 1, 2000
Author(s)
C Monroe, Q A. Turchette, D Kielpinski, B E. King, V Meyer, Wayne M. Itano, David J. Wineland, C J. Myatt, M A. Rowe, Christopher Langer, C A. Sackett
… Scalable Entanglement of Trapped Ions …

Results of the NIST National Ball Plate Round Robin

January 1, 1997
Author(s)
Gregory W. Caskey, Steven D. Phillips, Bruce R. Borchardt
… This report examines the results of the ball plate round robin administered by NIST. The round robin was … measuring machines. Measurements of a two-dimensional ball plate (240 mm by 240 mm) on 41 coordinate measuring machines … their measurement error on one or more of the ball plate spheres. …

The Influence of a Plate Obstacle on the Burning Behavior of Small Scale Pool Fires: An Experimental Study

May 22, 2022
Author(s)
Jian Chen, Ye Song, Wai Cheong Tam, Depeng Kong
… to pool fires. To characterize the influence of a plate obstacle on burning behavior of pool fire, a series of laboratory-scale pool fires sheltered by a plate obstacle with different heights and geometrical … dimensions are conducted. The results show that the plate obstacle above the fuel pool leads to a faster …

Micro-Mirror Array Control of Optical Tweezer Trapping Beams

August 28, 2002
Author(s)
Nicholas Dagalakis, Thomas W. LeBrun, J Lippiatt
… of optical tweezer manufacturing depends on the number of trapping beams available. Micro optics technology offers the opportunity to significantly increase the number of trapping beams without a significant increase of the cost or … micro-mirror array, nano-manufacturing, optical trapping …

Charge States of y Ions in the Collision-Induced Dissociation of Doubly Charged Tryptic Peptide Ions

February 25, 2011
Author(s)
Pedatsur Neta, Stephen E. Stein
… relative intensities of charge states of product y- and b-ions depend on the final location of that proton. This study … distributions for dissociation of doubly charged peptide ions, using a large reference library of peptide ion fragmentation generated from ion-trap CID of peptide ions from tryptic digests. Trends in relative intensities of …
Displaying 201 - 225 of 4632
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