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Search Publications

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Displaying 601 - 625 of 4633

Instantaneous Trapping and Long Term Cell Survival Under Dielectrophoretic Conditions Using a Hybrid Cell Adhesive Surface

October 3, 2010
Author(s)
Darwin R. Reyes-Hernandez, Jennifer S. Hong, John T. Elliott, Michael Gaitan
… (DEP) microfluidic device that allows instantaneous trapping of cells for rapid return to cell growth conditions … dielectrophoresis, hybrid cell adhesive material, cell trapping, long-term cell assays … Instantaneous Trapping and Long Term Cell Survival Under Dielectrophoretic …

Capabilities of Single Particle Inductively Coupled Plasma Mass Spectrometry for the Size Measurement of Nanoparticles: A Case Study on Gold Nanoparticles

February 28, 2014
Author(s)
Jingyu Liu, Karen E. Murphy, Robert I. MacCuspie, Michael R. Winchester
… study on spICP-MS for accurate size measurement of gold nanoparticles from 10 nm to 200 nm. We show that dwell … Single particle ICP-MS, Gold nanoparticles, Size measurement … for the Size Measurement of Nanoparticles: A Case Study on Gold Nanoparticles …

Stretch-inactivated ion transport through subnanoporous two-dimensional membranes

October 3, 2024
Author(s)
Yechan Noh, Alex Smolyanitsky
… In biology, mechanosensitive ion channels facilitate the conversion of mechanical stimuli, … membranes. Here we describe an opposite behavior, in which ion transport is inactivated upon stretching a subnanoporous 2D membrane. We explore electrophoretic ion transport through several subnanoporous membranes using …

Defect Evolution of Ion-Exposed Single-Wall Carbon Nanotubes

January 3, 2019
Author(s)
Jana Kalbacova, Elias J. Garratt, Raul D. Rodriguez, Angela R. Hight Walker, Kevin A. Twedt, Jeffrey Fagan, Teresa I. Madeira, Jabez J. McClelland, Babak Nikoobakht, Dietrich R. Zahn
… defects in single-wall carbon nanotubes by a focused ion beam of light and heavy ions, Li+ and Ga+, respectively. … Precise control of defects was achieved by tuning the ion fluence over five orders of magnitude from 3∙1010 … This is further explored in a model that accounts for the ion type and its energy and thus can be employed to estimate …

Uniaxial Crushing of Cellular Sandwich Plates Under Air Blast

April 3, 2007
Author(s)
Joseph A. Main, George A. Gazonas
… Sandwich plates with cellular metal cores are being widely considered … Computational simulations have shown that sandwich plates exhibit reduced deflections relative to solid plates with the same total mass. However, there has been some … Uniaxial Crushing of Cellular Sandwich Plates Under Air Blast …

Nanometer Gaps in Gold Wires Are Formed By Thermal Migration

June 7, 2005
Author(s)
Ganesh K. Ramachandran, Monica D. Edelstein, David L. Blackburn, John S. Suehle, Eric M. Vogel, Curt A. Richter
… The formation of gold wires separated by a few nanometers is reported. Such … at ambient conditions, a bias voltage across a thin gold wire until the wire breaks or fails. Externally heating … wires is very large and can approach the melting point of gold. To avoid deleterious effects of such large temperatures …

High Contrast Coherent Population Trapping Resonances Using Four Wave Mixing in 87Rb.

May 15, 2007
Author(s)
V Shah, Svenja A. Knappe, Leo W. Hollberg, John Kitching
… a simple technique to generate coherent population trapping (CPT) resonances with very high contrast using four … Coherent Population Trapping, Fourwave mixing, Frequency Standards … High Contrast Coherent Population Trapping Resonances Using Four Wave Mixing in 87Rb. …

Fabricating Planar Nanoparticle Assemblies With Number Density Gradients

July 1, 2002
Author(s)
R R. Bhat, Daniel A. Fischer, Jan Genzer
… We report on preparing assemblies of gold nanoparticles with continuous gradients in number … silane molecules, followed byii) attachement of gold nanoparticles to -NH2 functional groups by immersing the substrate in a colloidal gold solution. Experiments using atomic force microscopy …

The Detection and Characterization of Ions, DNA and Proteins with Nanometer-Scale Pores

December 1, 2007
Author(s)
John J. Kasianowicz, Jeffrey C. Lerman, Sarah E. Henrickson, Martin Misakian, Rekha Panchal, Kelly Halverson, Sina Bavari, Tam Nguyen, Rick Gussio, Devanand K. Shenoy, Vincent M. Stanford
… for use in the sensitive and selective detection of ions, the characterization of polynucleotides, and toxins as … The Detection and Characterization of Ions, DNA and Proteins with Nanometer-Scale Pores …

Electric- field noise from carbon-adatom diffusion on a Au(110) surface: first-principles calculations and experiments

March 9, 2017
Author(s)
E. Kim, Arghavan Safavi-Naini, Kyle McKay, David P. Pappas, P.F Weck, H.R. Sadeghpour, Dustin Hite
… The decoherence of trapped-ion quantum bits due to heating of their motional modes is a … to electric- field noise arising from processes on the trap-electrode surfaces. In this work, we address the source … probe microscopy, how the carbon adatom diffusion on the gold surface changes the energy landscape, and how the adatom …

NEMI Tin Whisker Test Method Standards

October 12, 2021
Author(s)
I Boguslavsky, P Bush, E Kam-Lum, M Kwoka, J McCullen, K Spalding, K Vo, Maureen E. Williams
The need to better understand whisker growth has dramatically increased as component suppliers convert from tin-lead (SnPb) finishes to Pb-free finishes of Sn and low -alloy-content Sn-based finishes. Whiskers are spontaneous growth of metal filaments

Background and blended spectral line reduction in precision spectroscopy of EUV and x-ray transitions in highly charged ions

March 3, 2023
Author(s)
Yuri Ralchenko, Joseph N. Tan, Aung S. Naing, Galen O'Neil, Paul Szypryt, Dipti Dipti, Grant Mondeel, Roshani Silwal, Alain Lapierre, Steven Blundell, Gerald Gwinner, Antonio Camargo Villari, Endre Takacs
… similar ion charge distributions of heavy highly charged ions 2 that create similar potentials for lighter … between impurity elements with and without heavy 6 ions present. … spectroscopy, highly-charged ions, EBIT, line blen … of EUV and x-ray transitions in highly charged ions …

Fractionation and Characterization of Gold Nanoparticles in Aqueous Solution: Asymmetric-Flow Field Flow Fractionation with MALS, DLS and UV-Vis Detection

August 30, 2010
Author(s)
Tae Joon Cho, Vincent A. Hackley
… measurement protocols for the characterization of gold nanoparticles (GNPs), which are widely utilized in … field flow fractionation, gold nanoparticle, fractionation, size characterization, … Fractionation and Characterization of Gold Nanoparticles in Aqueous Solution: Asymmetric-Flow Field …

Young Modulus of a thin plate in the through-thickness direction

October 16, 2008
Author(s)
Sudook A. Kim, H M. Ledbetter
… along the Young modulus of a thin orthotropic plate. The method minimizes errors because eight of nine … we used a macroscopically orthotropic textured copper plate, which we measured also by acoustic-resonance … Young Modulus of a thin plate in the through-thickness direction …

Frequency Comparison of Two High-Accuracy Al+ Optical Clocks

February 17, 2010
Author(s)
Chin-Wen Chou, David Hume, J.C. Koelemeij, David J. Wineland, Till P. Rosenband
… of 8.6e-18, based on quantum logic spectroscopy of an Al+ ion. A simultaneously trapped Mg+ ion serves to sympathetically laser-cool the Al+ ion and detect its quantum state. The frequency of the … atomic clock, optical clock, high accuracy, aluminum ion, quantum logic …

Dynamics of Hydride Ions in Metal Hydride-Reduced BaTiO 3 Samples Investigated with Quasielastic Neutron Scattering

January 31, 2019
Author(s)
Carin Eklof-Osterberg, Reji Nedumkandathil, Ulrich Haussermann, Aleksander Jaworski, Andrew J. Pell, Madhu Sudan Tyagi, Niina H. Jalarvo, Bernhard Frick, Antonio Faraone, Maths Karlsson
… are characterized by the simultaneous presence of hydride ions and oxygen vacancies. Measurements of elastic fixed … neutron scattering, dynamics, hydride ions … Dynamics of Hydride Ions in Metal Hydride-Reduced BaTiO 3 Samples Investigated …

Continuous light shift correction in modualted coherent opoulation trapping clocks

October 13, 2006
Author(s)
V Shah, Vladislav Gerginov, P Schwindt, Svenja A. Knappe, Leo W. Hollberg, John E. Kitching
… stability of atomic clocks based on coherent population trapping (CPT). In this technique, the CPT feilds are created … coherent population trapping, frequency standards, light shifts … light shift correction in modualted coherent opoulation trapping clocks …

Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy?

October 12, 2021
Author(s)
A P. Kavanagh, John D. Gillaspy, D G. Hirst, M H. Mendenhall, N Nakamura, S Ohtani, H Wantanabe, F J. Currell
… using radiation from bare and hydrogen-like highly-charged ions as a driver for a proposed form of cancer therapy is … cancer, high charged ions, radiation therapy, radiotherapy … Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy? …

Impact of Monovalent Counter-ions on the Conformation of Flexible Polyelectrolytes Having Different Molecular Architectures

February 10, 2016
Author(s)
Alexandros Chremos, Jack F. Douglas
… We explore the condensation of monovalent counter-ions on the molecular conformation of highly charged flexible … In particular, we investigate how the counter-ions on the polyelectrolytes influence the average molecular … by calculating the average number of interfacial counter-ions, as well as the degree of coiling of the …
Displaying 601 - 625 of 4633
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