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Displaying 1401 - 1425 of 4634

Interaction of aerosol particle with a standing wave optical field

September 16, 2016
Author(s)
John J. Curry
Trajectories of spherical dielectric particles carried across an optical standing wave by a flowing medium areinvestigated. Trajectories are determined by a three-dimensional Monte Carlo calculation that includes drag forces, Brownian motion, and optical

Li+ transport in single-ion conducting side-chain polymer electrolytes with nanoscale self-assembly of ordered ionic domains

August 22, 2022
Author(s)
Jiacheng Liu, Lingyu Yang, Phillip Pickett, Bumjun Park, Jennifer Schaefer
… Li-ion batteries based on organic liquid electrolytes have been … that is solvating the lithium cation. Recently, metal-ion containing polymers with regulated, repeating chain architecture have drawn attention as ion conductors due to their ionic domain segregation. In this …

Optical-to-microwave frequency comparison with fractional uncertainty of 10 -15

October 1, 2007
Author(s)
Jason Stalnaker, Scott A. Diddams, Tara M. Fortier, K Kim, Leo W. Hollberg, James C. Bergquist, Wayne M. Itano, Marie Delaney, Luca Lorini, Windell Oskay, Thomas P. Heavner, Steven R. Jefferts, Filippo Levi, Thomas E. Parker, Jon H. Shirley
… of the optical frequency of the mercury single-ion frequency standard in terms of the SI second as realized … have resulted in a determination of the mercury single-ion frequency with a fractional uncertainty less than $7 … context of the previous measurements of the mercury single-ion frequency and arrive at a final determination of the …

Elastic and Inelastic Collisions of Cold Spin-Polarized 133 Cs Atoms

August 17, 1998
Author(s)
P J. Leo, Eite Tiesinga, Paul S. Julienne, T G. Walker
We present theoretical calculations of thermally averaged elastic cross sections and spin relaxation rates in the temperature range 1 {micro}K to 300 {micro}K for magnetically trapped doubly polarized Cesium atoms. The calculations reproduce the recent

Physics of DNA Threading Through a Nanometer Pore and Applications to Simultaneous Multianalyte Sensing

January 1, 2002
Author(s)
John J. Kasianowicz, S. E. Henrickson, Martin Misakian, H H. Weetall, B Robertson, Vincent M. Stanford
… to partition into and thread through single protein ion channels. It was recently shown in our laboratory that … can be used to probe the geometric properties of an ion channel, and that the interaction between the … analyte detection, ion channel, nanopore, protein pore, sensor …

In Situ Neutron Techniques for Studying Lithium Ion Batteries

May 1, 2012
Author(s)
Howard Wang, Robert Gregory Downing, Joseph Dura, Daniel S. Hussey
… We review in situ neutron techniques for studying lithium ion batteries. Four neutron measurement techniques, neutron … In Situ Neutron Techniques for Studying Lithium Ion Batteries …

Temperature sculpting in yoctoliter volumes

February 14, 2013
Author(s)
Joseph E. Reiner, Joseph W. Robertson, Daniel L. Burden, Lisa K. Burden, Arvind Balijepalli, John J. Kasianowicz
… single molecules. The method is based on the coupling of gold nanoparticles adjacent to a single nanometer-scale protein ion channel. Visible laser light incident on the …

Recent Experiments with Bose-Condensed Gases at JILA

October 12, 2021
Author(s)
D S. Hall, J R. Ensher, D S. Jin, M R. Matthews, C E. Wieman, Eric A. Cornell
… for a time-averaged orbiting potential (TOP) magnetic trap. … rf and microwave spectroscopy, rubidium, TOP magnetic trap …

Single-Ion Properties of the S eff = 1/2 XY Antiferromagnetic Pyrochlores NaA'Co 2 F 7 (A' = Ca 2+ , Sr 2+ )

April 13, 2017
Author(s)
K. A. Ross, J. M. Brown, R. J. Cava, J. W. Krizan, S. E. Nagler, Jose Rodriguez Rivera, M. B. Stone
… correlations as NaCaCo 2 F 7 . We than present the single-ion levels of Co 2+ in these materials as measured by … fields accounts for the observed transitions. The single-ion ground state of Co 2+ is a Kramers doublet with a … model that reproduces the salient features of the single-ion spectrum produces approximately 8.4% and 4.1% variation …

Design of a 1 DOF MEMS motion stage for a parallel plane geometry rheometer

December 31, 2015
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Chiara C. Ferraris, Svetlana Avramov-Zamurovic1
Rotational rheometers are used to measure paste properties, but the test would take too long to be useful for a quality control (QC) on the job site. In this paper, a new type of rheometer is proposed based on a one degree of freedom (DOF) micro-electro

Templating Nanocrystals with Dendrimers: A Mesoscopic Model System

March 1, 2000
Author(s)
Franziska Grohn, Barry J. Bauer, Eric J. Amis
… hybrid colloids in aqueous solution. The formation of gold colloids upon reduction of a gold salt precursor serves as model reaction to study … and small angle x-ray scattering (SAXS) show that the gold particles are formed inside the dendrimer and located …

An Iodide-Based Li 7 P 2 S 8 I Superionic Conductor

February 3, 2015
Author(s)
Ezhiylmurugan Rangasamy, Zengcai Liu, Mallory Gobet, Kartik Pilar, Gayatri Sahu, Wei Zhou, Hui Wu, Steve Greenbaum, Chengdu Liang
… A Li 7 P 2 S 8 I solid state Li-ion conductor derived from β-Li 3 PS 4 and LiI demonstrates … superionic conductor, Li3PS4, Li7P2S8I, Li ion battery …

Determination of high-molecular weight polycyclic aromatic hydrocarbons in high performance liquid chromatography fractions of coal tar standard reference material 1597a via solid-phase nanoextraction and laser-excited time-resolved Shpolskii spectr

November 10, 2015
Author(s)
Walter B. Wilson, Bassam Alfarhani, Cristina Bisson, Stephen A. Wise, Andres Campiglia
… chromatographic fractions were pre-concentrated with gold nanoparticles. Complete analysis was possible with … Solid-phase nanoextraction, Shpol’skii spectroscopy, Gold nanoparticles, Coal tar, Standard reference material …

Electrodeposition of Metastable Au-Ni Alloys

May 13, 2010
Author(s)
Gery R. Stafford, E. Rouya, Ugo Bertocci, J. J. Mallett, R. Schad, M. R. Begley, R. G. Kelly, M. Reed, G. Zangari
… electrolytes derived from a commercial bath for soft gold plating is investigated. Alloy compositions ranging from …
Displaying 1401 - 1425 of 4634
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