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Search Publications

NIST Authors in Bold

Displaying 426 - 450 of 4633

Microwaves in Quantum Computing

January 29, 2021
Author(s)
Joseph C. Bardin, Daniel Slichter, David J. Reilly
… three leading quantum computing platforms: trapped atomic ion qubits, spin qubits in semiconductors, and …

Negative Cesium Sputter Ion Source for Generating Cluster Primary Ion Beams for Secondary Ion Mass Spectrometry Analysis

April 1, 2001
Author(s)
John G. Gillen, R L. King, B Freibaum, R Lareau, J Bennett, F Chmara
… The use of a cluster (or polyatomic) primary ion projectile for organic SIMS has been demonstrated to … use of a commercially available negative cesium sputter ion as a means of generating cluster ion beams on our Cameca IMS 4F and 6F magnetic sector SIMS … cluster beam, depth profiling, organic secondary ion mass spectrometry …

Measurements of the Linear Polarization of Satellite Transitions from Li- and Be- like Ar Ions

June 18, 2020
Author(s)
Amy Gall, Dipti Goyal, Sean W. Buechele, Samuel C. Sanders, Roshani Silwal, Csilla Szabo-Foster, N Brickhouse, Yuri Ralchenko, Endre A. Takacs
… recombination satellite transitions from Li-like Ar ions, and two blended features from Be-like ions. The spectrometers observed at 90o relative to the … dielectronic recombination, polarization, highly-charged ions … of Satellite Transitions from Li- and Be- like Ar Ions …

Inhomogenous Light Shifts of Coherent Population Trapping Resonances

April 13, 2022
Author(s)
Juniper Pollock, Valera Yudin, Alexey Taichenachev, Maxim Basalaev, D Kovalenko, Azure Hansen, John Kitching, William McGehee
… Coherent population trapping (CPT) in atomic vapors using all-optical … coherent population trapping, light shifts … Inhomogenous Light Shifts of Coherent Population Trapping Resonances …

Thermal Response Simulation for Tuning PID Controllers in a 1016 mm Guarded Hot Plate Apparatus

July 1, 2011
Author(s)
Robert R. Zarr, William C. Thomas
… the controlled thermal performance of a large guarded hot-plate apparatus. The control system consists primarily of … and includes the same control algorithm as used in the hot-plate apparatus. The model, accounting for both thermal … building technology, guarded hot plate, mathematical simulation, PID, temperature control, …

Optical atomic clocks

February 9, 2015
Author(s)
Andrew D. Ludlow, Martin M. Boyd, Jun Ye, E. Peik, P. O. Schmidt
… clock, optical lattice, precision spectroscopy, trapped ion …

Helium Ion Microscopy: A New Technique for Semiconductor Metrology and Nanotechnology

January 1, 2007
Author(s)
Michael T. Postek, Andras Vladar, John A. Kramar, L A. Stern, John Notte, Sean McVey
… The Helium Ion Microscope (HIM) offers a new, potentially disruptive … the helium ions, it is theoretically possible to focus the ion beam into a smaller probe size relative to that of an … achievable. In contrast to the SEM, when the helium ion beam interacts with the sample, it generates …

Pendular trapping conditions for ultracold polar molecules enforced by external electric fields

June 26, 2017
Author(s)
Eite Tiesinga, Alexander Petrov, Constantinos Makrides, Svetlana Kotochigova, Ming Li
… We theoretically investigate trapping conditions for ultracold polar molecules in optical … field and the polarization of the optical laser lead to a trapping design for 23Na40K molecules where decoherences due … between them, experience ultrastable, matching trapping forces. …

The Influence of Agarose Concentration in Gels on the Electrophoretic Trapping of Circular DNA

January 1, 2003
Author(s)
Kenneth D. Cole, B. Akerman
… concentrations from 0.25% to 2.5% (1% is 1g/100 mL). The trapping behaviors of two DNA circles with sizes of 13 … studied. The electric field strength (E) for the onset of trapping, the apparent trap density, and release … Direct current mobility indicated that the onset of trapping, indicated by a reduction in velocity and increase …

Population-imbalanced fermions in harmonically trapped optical lattices

July 21, 2008
Author(s)
Menderes Iskin, Carl J. Williams
… of population imbalanced fermion mixtures in harmonically trapped two-dimensional optical lattices. In the low density … Superfluid Oscillations, Fulde-Ferrell-Larkin-Ovchinnikov, Trapped, Optical Lattices, Population Imbalanced Fermion … Population-imbalanced fermions in harmonically trapped optical lattices …

Bright focused ion beam sources based on laser-cooled atoms

March 24, 2016
Author(s)
Jabez J. McClelland, Adam V. Steele, Brenton J. Knuffman, Kevin A. Twedt, Andrew D. Schwarzkopf, Truman M. Wilson
… Nanoscale focused ion beams (FIBs) represent one of the most useful tools in … ionization of laser cooled neutral atoms to produce the ion beam. The extremely cold temperatures attainable with … the brightness of the industry standard Ga+ liquid metal ion source. In this review we discuss the context of ion beam …

Quantification of ligand packing density on gold nanoparticles using ICP-OES

February 18, 2012
Author(s)
Sherrie R. Elzey, De-Hao D. Tsai, Savelas A. Rabb, Lee L. Yu, Michael R. Winchester, Vincent A. Hackley
… ligand, 3-mercaptopropionic acid (MPA), was conjugated on gold nanoparticles (AuNPs), and packing density was measured … functional ligand, gold nanoparticle, ICP-OES, packing density, quantitative … Quantification of ligand packing density on gold nanoparticles using ICP-OES …

Model for the Asymmetric DC and Fluctuating Conduction of an Ion Channel

October 16, 2008
Author(s)
B Robertson, John J. Kasianowicz
… A model for the asymmetric DC conduction of an ion channel is compared with measurements of the ionic … carried by an aqueous potassium chloride solution through ion channels formed by alpha hemolysin in a lipid bilayer. … and salt concentration is given. A model for the noise in ion conduction is also formulated. The randomness of proton …
Displaying 426 - 450 of 4633
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