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Displaying 301 - 325 of 4633

Sympathetic Electromagnetically-Induced-Transparency Laser Cooling of Motional Modes in an Ion Chain

April 12, 2013
Author(s)
Yiheng Lin, John P. Gaebler, Ting Rei Tan, Ryan S. Bowler, John D. Jost, Dietrich G. Leibfried, David J. Wineland
… (EIT) laser cooling to cool motional modes of a linear ion chain. As a demonstration, we apply EIT cooling on 24 Mg + ions to cool the axial modes of a 9 Be + - 24 Mg + ion pair and a 9 Be + - 24 Mg + - 24 Mg + - 9 Be + ion chain thereby sympathetically cooling the 9 Be + ions. …

Thermoelectric Properties of a Selected Lot of Gold versus Platinum Thermocouples

June 1, 2005
Author(s)
Dean C. Ripple
… Gold versus platinum thermocouples have uncertainties … we describe the properties of 21 specially-constructed gold versus platinum (Au/Pt) thermocouple thermometers, each … gold, ITS-90, platinum, thermocouple, thermoelectric … Thermoelectric Properties of a Selected Lot of Gold versus Platinum Thermocouples …

Rapid Large-Scale Assembly and Pattern Transfer of One-Dimensional Gold Nanorod Superstructures

July 7, 2017
Author(s)
Rana NMN Ashkar, Michael J. A. Hore, Xingchen Ye, Bharath NMN Natarajan, Nicholas J. Greybush, Thomas Lam, Christopher B. Murray
… The utility of gold nanorods for plasmonic applications largely depends on … a simple reliable method to obtain high-yield oriented gold nanorod assemblies remains a significant challenge to … and van der Waals interactions to precisely orient gold nanorods, over macroscopic areas, on 1D nanostructured …

Characterization of a high-brightness, laser-cooled Li+ ion source

February 20, 2019
Author(s)
Jamie R. Gardner, William R. McGehee, Jabez J. McClelland
… Ion sources based on laser cooling have recently provided new pathways to high-resolution microscopy, ion milling, and ion implantation. Here, we present the design and detailed … Atomic physics, Laser cooling, Focused ion beams, Scanning probe microscopy, Battery materials …

Experimental speedup of quantum dynamics through squeezing

April 17, 2024
Author(s)
Shaun Burd, Hannah Knaack, Raghavendra Srinivas, Christian Arenz, Alejandra Collopy, Laurent Stephenson, Andrew C. Wilson, David Wineland, Dietrich Leibfried, John J. Bollinger, David Allcock, Daniel Slichter
… motional and spin states of a single trapped $^25}$Mg$^+}$ ion, the scheme applies generally to Hamiltonians involving … trapped ion, squeezing, quantum amplification …

Stochastic Modeling and Simulation of Marginally Trapped Neutrons

May 20, 2014
Author(s)
Kevin J. Coakley
… beta −decay rates which accounts for loss of marginally trapped neutrons due to wall collisions and other possible … are based on computer intensive tracking of marginally trapped neutrons with a symplectic integration method and a … marginally trapped neutrons, neutron lifetime, magnetic trapping, …

Filtering noise with a quantum probe

May 5, 2011
Author(s)
John J. Bollinger
… in general terms the ideas behind the manuscript "Single-ion quantum lock-in amplifier" by Kotler and colleagues which … of the valence electron spin of a single trapped strontium ion. … dynamical decoupling, ion trap, lock-in detection, quantum metrology, quantum …

Realization of quantum error correction

December 2, 2004
Author(s)
J Chiaverini, Dietrich G. Leibfried, Tobias Schaetz, Murray D. Barrett, Brad R. Blakestad, Joseph W. Britton, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R Ozeri, David J. Wineland
… quantum error correction using three beryllium atomic-ion qubits confined to a linear , multi-zone trap. One logical state is protected against spin-flip errors … that has no classical analog. In the experiment, a primary ion qubit is prepared in an initial state, which is then …

Using Finite Element Analysis to Design a New Guarded Hot Plate Apparatusfor Measuring the Thermal Conductivity of Insulating Materials

October 1, 2001
Author(s)
William M. Healy
… Standards and Technology (NIST) is developing aguarded hot plate apparatus to measure the thermal conductivity of … temperatures of the plates, the heat input to the hotter plate, and the thickness of the specimen. In order for this apparatus to provide accurate results, however, each plate must be maintained at a nearly uniform temperature, and …

Electron Trapping: An Unexpected Mechanism of NBTI and Its Implications

June 17, 2008
Author(s)
Jason P. Campbell, Kin P. Cheung, John S. Suehle, A Oates
… demonstrates the presence of hole as well as electron trapping and detrapping. The hole and electron trapping/detrapping behavior is only observable for very fast … NBTI, electron trapping, hole trapping, fast-IDVG … Electron Trapping: An Unexpected Mechanism of NBTI and Its Implications …

Microcalorimeter/EBIT Measurements of X-Ray Spectra of Highly Charged Ions

January 1, 2001
Author(s)
I Kink, J M. Laming, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, M Barbera, N Brickhouse, S Murray, D Landis, J. Beeman, E. E. Haller
… Spectra of highly charged Ar, Kr, Xe and Fe ions, produced in an Electron Beam Ion Trap (EBIT), have been … Kr and to determine a charge state distribution of Kr ions inside the EBIT. Line intensity ratios of Fe XVII have … EBIT, highly charged ions, microcalorimeter, x-ray spectra …

Additives for Superconformal Gold Feature Filling

May 11, 2021
Author(s)
Daniel Josell, Thomas P. Moffat
… transients, and yields bright specular deposits. Gold deposition with Pb2+ addition exhibits superconformal … gold, electrodeposition, superconformal, trenches, gratings … Additives for Superconformal Gold Feature Filling …

Headspace Analysis: Purge and Trap

February 15, 2019
Author(s)
Thomas J. Bruno, Megan E. Harries
… volume of vapor above a condensed phase sample. Purge and trap refers to the headspace technique in which volatile … sample matrix by an inert gas and carried onto a sorbent trap, where they are concentrated and later introduced into … analysis. After its introduction in the 1970s, purge and trap quickly gained widespread acceptance and was adopted by …

Inkjet Metrology and Standards for Ion Mobility Spectrometry

September 1, 2007
Author(s)
R M. Verkouteren, J Brazin, Eric S. Windsor, Robert A. Fletcher, R Maditz, Wayne Smith, John G. Gillen
… BHT-PLGA microspheres show peaks in positive and negative ion modes, which demonstrate usefulness for testing portals … International Journal of Ion Mobility Spectrometry … calibration, explosives, homeland security, inkjet, ion mobility spectrometry, piezoelectric, portals, standards, …

Rapid Cooling of the In-Plane Motion of Two-Dimensional Ion Crystals in a Penning Trap to millikelvin Temperatures

February 27, 2024
Author(s)
Wes Johnson, Athreya Shankar, John Zaris, John J. Bollinger, Scott Parker
… two-dimensional planar crystal of ions stored in a Penning trap offers an attractive platform for quantum sensing and … simulations of the laser cooling dynamics suggest that the ion crystal's planar motion cools on a timescale of several … Rapid Cooling of the In-Plane Motion of Two-Dimensional Ion Crystals in a Penning Trap to millikelvin Temperatures …

A nonlinear model for gusset plate connections

March 15, 2014
Author(s)
Dat Duthinh, Chiara Crosti
… Bridges, connections, finite-element analysis, gusset plate, linear springs, steel truss. … A nonlinear model for gusset plate connections …

Extreme Bottom-up Gold Filling of High Aspect Ratio Features

February 27, 2023
Author(s)
Daniel Josell, Thomas P. Moffat
… in microelectronics over the last quarter century, gold filled gratings fabricated using superconformal … electrodeposition process was a scientific novelty where gold deposition is localized entirely to the bottoms of … gold, trenches, superfill, gratings, imaging, superfill, …

Masked Ion Beam Lithography with Highly Charged Ions

September 1, 1998
Author(s)
John D. Gillaspy, D Parks, L P. Ratliff
… Masked ion beam lithography using highly charged ions is demonstrated for the first time by producing an array … exposure of the resist is incomplete and isolated single-ion impact sites can be seen within the exposed areas. Atomic … AFM, atomic force microscopy, highly charged ion, ion beam, ion tracks, lithography, PMMA …

Feedback Control of Optically Trapped Particles

December 17, 2011
Author(s)
Jason J. Gorman, Arvind K. Balijepalli, Thomas W. LeBrun
… the trap. Many of the challenges in controlling optically trapped particles and future research directions for … Feedback Control of Optically Trapped Particles …

Preliminary characterization study of a gold-coated concentrator for hemispherical longwave irradiance measurements

November 15, 2010
Author(s)
Jinan Zeng, Leonard M. Hanssen, Ibrahim Reda, Jonathan Scheuch
… We report the preliminary characterization results of a gold-coated concentrator used for longwave irradiance … For the transmittance measurement using CHILR, two diffuse gold references are selected to generate a Lambertian source … the laser beam across the opening area of it with a gold diffuser. For the direct throughput measurement, a small …
Displaying 301 - 325 of 4633
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