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Displaying 626 - 650 of 4633

On the Sub-Nanometer Resolution of Scanning Electron and Helium Ion Microscopes

March 1, 2009
Author(s)
Andras Vladar, Michael T. Postek, Bin Ming
… better and better resolution with various electron and ion microscopes and to monitor and maintain these instruments … reproducibly the resolution of scanning electron and ion microscopes. … Helium ion microscope, metrology, sharpness, resolution, scanning … Sub-Nanometer Resolution of Scanning Electron and Helium Ion Microscopes …

Light shifts in a pulsed cold-atom coherent-population-trapping clock

April 10, 2015
Author(s)
Eric M. Blanshan, Elizabeth A. Donley, John E. Kitching
… a variety of applications. A cold-atom coherent population trapping clock featuring laser-cooled 87 Rb atoms and pulsed … Atomic clocks, coherent population trapping, laser-cooled atoms … Light shifts in a pulsed cold-atom coherent-population-trapping clock …

Understanding Imaging and Metrology with the Helium Ion Microscope

March 1, 2009
Author(s)
Michael T. Postek, Andras Vladar, Bin Ming
… microscopy, scanning tunneling microscopy and focused ion beam microscopes have all been applied to nanotechnology … new tool for nanotechnology is the scanning helium ion microscope (HIM). The HIM is a new complimentary imaging … imaging and metrology with this instrument entails new ion beam/specimen interaction physics which must be fully …

Versailles Project on Advanced Materials and Standards (VAMAS) Interlaboratory Study on Measuring the Number Concentration of colloidal gold nanoparticles

March 9, 2022
Author(s)
Caterina Minelli, Karen E. Murphy, Monique Johnson, Antonio Montoro Bustos, Jeffrey Fagan, Ingo Strenge
… The sample distributed in the study consisted of spherical gold nanoparticles of nominally 30 nm in diameter. The study … particle number concentration, gold nanoparticles, interlaboratory study … Study on Measuring the Number Concentration of colloidal gold nanoparticles …

Dynamic Contact Angle of a Liquid Spreading on a Heated Plate

June 1, 1999
Author(s)
Dean C. Ripple
… of a liquid meniscus advancing or receding across a heated plate is derived. The effects of liquid evaporation, intermolecular interaction with the plate, and thermocapillarity are included. Numerical and … Dynamic Contact Angle of a Liquid Spreading on a Heated Plate …

New Ion Source for High Precision FIB Nanomachining and Circuit Edit

December 31, 2014
Author(s)
Adam V. Steele, Brenton Knuffman, Jabez J. McClelland
… We present a review of the Low Temperature Ion Source (LoTIS): its aims, design, performance data … Focused ion beam, FIB, SIMS, ion source, laser cooling, cold atom ion source, LOTIS … New Ion Source for High Precision FIB Nanomachining and Circuit …

Use of Phosphor Image Plates for Measuring Intensities in Vacuum Ultraviolet Spectra

January 28, 2011
Author(s)
Gillian Nave, Craig J. Sansonetti, Csilla Szabo, John J. Curry, Darren Smillie
… We describe the use of phosphor image plates for recording spectra in the vacuum ultraviolet (VUV) … times, and long-term stability and lifetime of the plates. We find that the plates have a linear intensity response with a dynamic range … Use of Phosphor Image Plates for Measuring Intensities in Vacuum Ultraviolet Spectra …

Gold Superfill in Sub-Micrometer Trenches: Experiment and Prediction

November 16, 2005
Author(s)
Daniel Josell, Daniel Wheeler, Thomas P. Moffat
… Bottom-up deposition of gold in fine trenches, also called superfill, was recently … preadsorbed, deposition-rate-accelerating lead followed by gold electrodeposition. The present study has used experiments on planar substrates to quantify gold electrodeposition. The present study has used …

Copper Oxide Precipitates in NBS Standard Reference Material 482

December 1, 2002
Author(s)
Eric S. Windsor, R Carlton, John G. Gillen, Scott A. Wight, David S. Bright
… using light microscopy, electron microscopy and secondary ion mass spectrometry (SIMS). SIMS has demonstrated that the … present in all wires that contain copper. Only the pure gold wire is precipitate free. Initial results from the … copper-gold alloy, electron probe microanalysis, metallography, …

Long Working-Distance Optical Trap for in Situ Analysis of Contact-Induced Phase Transformations

May 11, 2015
Author(s)
Joshua A. Gordon, Ryan D. Davis, Sara Lance, Margaret A. Tolbert
… and characterization of a long working-distance optical trap to analyze a diverse range of particle phase … K2SO4. Utilizing the long working distance of the optical trap and the far-field image analysis, a novel … optical tweezers, optical trap, bessel beam, droplet, efflorescence …

Infrared and visible laser spectroscopy for highly-charged Ni-like ions

April 12, 2017
Author(s)
Yuri Ralchenko
… or infrared (IR) lasers for spectroscopy of highly-charged ions (HCI) has not been particularly extensive so far due to … within the first excited configuration 3d9.4s in Ni-like ions of heavy elements from Z_N =60 to Z_N =92 is within the … highly-charged ions, Ni-like ions, forbidden transitions, visible and …

Direct Observation of Coherent Population Trapping in a Superconducting Artificial Atom

April 20, 2010
Author(s)
David P. Pappas, Jeffrey S. Kline, Willim R. Kelley, Zachary Dutton, Thomas A. Ohki, john Schlafer, Bashkar Mookerji
… The phenomenon of coherent population trapping (CPT) of an atom (or solid state artificial atom ), … Quantum computing, phase qubit, Coherent Population Trapping, Electromagnetically Induced Transparancy … Direct Observation of Coherent Population Trapping in a Superconducting Artificial Atom …

Summary of ISO/TC 201 Standard: XIII. ISO 18114:2003 - Surface Chemical Analysis - Secondary Ion Mass Spectrometry - Determination of Relative Sensitivity Factors From Ion-Implanted Reference Materials

March 1, 2006
Author(s)
David S. Simons
… Ion-implanted materials are commonly used in secondary-ion mass spectrometry for the calibration of instruments. … factor (RSF) of an element in a specified matrix from an ion-implanted reference material, and to show how the … ion implantation, reference material, relative sinsitivity …

GPS Integrity Architecture Opportunities

September 16, 2013
Author(s)
Marc A. Weiss, Calvin Miles, Karl J. Kovach, John Dobyne, Karen Van Dyke
… ION GNSS 2013 … Proceedings of the 2013 ION GNSS meeting …

A Laser-Cooled Frequency Standard for GPS

September 20, 2011
Author(s)
Thomas P. Heavner, Stephan E. Barlow, Marc A. Weiss, Neil Ashby, Steven R. Jefferts
… ION GNSS 2011 … Proceedings of the ION GNSS 2011 Conference …

Quantitative Analysis of Dendron-Conjugated Cisplatin-Complexed Gold Nanoparticles Using Scanning Particle Mobility Mass Spectrometry

May 8, 2013
Author(s)
De-Hao D. Tsai, Tae Joon Cho, Sherrie R. Elzey, Julien C. Gigault, Vincent A. Hackley
… this method using a model cisplatin functionalized dendron-gold nanoparticle (AuNP) conjugate. Electrospray differential … gold, dendron, platinum, cisplatin, scanning mobility, mass … Analysis of Dendron-Conjugated Cisplatin-Complexed Gold Nanoparticles Using Scanning Particle Mobility Mass …

Ferrous Ions as Catalysts for Photochemical Reduction of CO 2 in Homogeneous Solutions

May 1, 2000
Author(s)
J Grodkowski, Pedatsur Neta
… Ferrous ions are found to act as efficient catalysts for the … to form the radical anion, TP. - , which reduces Fe(II) ions. The rate constant for this reaction was determined by … and found to be 1.2 x 10 8 L mol -1 s -1 . The Fe(I) ions produced are expected to react with CO 2 to form an …

Realization of a programmable two-qubit quantum processor

November 15, 2009
Author(s)
David Hanneke, Jonathan Home, John D. Jost, Jason Amini, Dietrich G. Leibfried, David J. Wineland
The universal quantum computer is a device that could simulate any physical system and represents a major goal for the field of quantum information science. Algorithms performed on such a device are predicted to offer significant gains for some important

Conductance and ion selectivity of a mesoscopic protein nanopore probed with cysteine scanning mutagenesis

November 1, 2005
Author(s)
Petr Merzlyak, Maria-Fatima P. Capistrano, Angela Valeva, John J. Kasianowicz, Oleg V. Krasilnikov
… Nanometer-scale, proteinaceous pores are the basis of ion and macromolecular transport in cells and organelles. Recent studies suggest that ion channels and synthetic nanopores may prove useful in … relationship of nanopores, we are studying the ion conducting properties of channels formed by wild-type and …

Electrochemical intercalation of lithium ions into NbSe2 nanosheets

September 21, 2016
Author(s)
Albert Davydov, Anand V. Patel, Louisa Meshi, Emily Hitz, Liangbing Hu
… study. We demonstrate successful intercalation of Li-ions into NbSe2 and confirm this result through X-ray … Electrochemical intercalation of lithium ions into NbSe2 nanosheets …

Fractionation and characterization of high aspect ratio gold nanorods using asymmetric-flow field flow fractionation and single particle inductively coupled plasma mass spectrometry

July 14, 2015
Author(s)
Thao M. Nguyen, Jingyu Liu, Vincent A. Hackley
… and characterization of high aspect ratio (AR) gold nanorods (GNRs) is a rapidly growing area of interest … detected particle events using mass standards of dissolved gold. Size distributions were then derived by transforming … gold nanorod, asymmetric-flow field flow fractionation, …
Displaying 626 - 650 of 4633
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