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Displaying 601 - 625 of 1600

Small Angle Neutron Scattering Measurement of Silicon Nanoparticle Size Distribution

October 12, 2021
Author(s)
Jonghoon Choi, Shih-Huang Tung, Nam S. Wang, Vytas Reipa
We have determined the particle size distribution profiles of octane terminated silicon nanoparticle suspensions, produced using the sonication of electrochemically etched Si wafer. Small angle neutron scattering data was analyzed separately in the high (0

Real-time Photoluminescence Studies of Thin Film Formation in Organic Solar Cells

February 29, 2016
Author(s)
Sebastian Engmann, Felicia A. Bokel, Hyun W. Ro, Dean M. DeLongchamp, Lee J. Richter
We present a method to study the structural evolution of organic bulk-heterojunctions via real-time, in-situ, steady state photoluminescence (PL). In-situ PL, in combination with real-time transmission and reflection measurements, allowed us to

Mesomorphic Pathway in Early Stage Crystallization of Polyethylene

June 18, 2015
Author(s)
Kalman D. Migler, Angela R. Hight Walker, Anthony P. Kotula
The kinetic pathway by which a molten polymer transforms into a multi-length scale semi-crystalline structure upon cooling is an unsolved problem in polymer physics, yet it is critical to the processing, properties and ultimate performance of these

Fast Proton Conduction Facilitated by Minimum Water in a Series of Divinylsilyl-11-Silicotungstic Acid-co-Butyl Acrylate-co-Hexanediol Diacrylate Polymers

January 9, 2014
Author(s)
Lauren F. Greenlee, Andrew M. Herring, James L. Horan, Anitha Lingutla, Hui Ren, Mei-Chen Kuo, Sonny Sachdeva, Yuan Yang, Soenke Seifert, Michael A. Yandrasits, Steven J. Hamrock, Matthew H. Frey
Studies of proton transport in novel materials are important to enable a large array of electrochemical devices. In this study, we show that heteropoly acids (HPAs) when immobilized in polymer matrices have highly mobile protons. Divinyl-11-silicotungstic

Certification of Three NIST Renewal Soil Standard Reference Materials(R) for Element Content: SRM 2709a San Joaquin Soil, SRM 2710a Montana Soil I, and SRM 2711a Montana Soil II

June 1, 2010
Author(s)
Elizabeth A. Mackey, Christopher S. Johnson, Richard M. Lindstrom, Stephen E. Long, Anthony F. Marlow, Karen E. Murphy, Rick L. Paul, Rachel S. Popelka-Filcoff, Savelas A. Rabb, John R. Sieber, Rabia Oflaz, Bryan E. Tomlin, Laura J. Wood, James H. Yen, Lee L. Yu, Rolf L. Zeisler, S. A. Wilson, M. G. Adams, Z. A. Brown, P. L. Lamothe, J. E. Taggart, C. Jones, J. Nebelsick
… reference, and information mass fraction values for 44 to 48 major, minor, and trace element constituents. For …

Highly charged ion (HCI) modified tunnel junctions

August 15, 2008
Author(s)
Joshua M. Pomeroy, Holger Grube
The neutralization energy carried by highly charged ions (HCIs) provides a fundamentally independent method for localizing energy on a target’s surface, producing features and modifying surfaces with fluences and kinetic energies that are negligible for

Cryogenic Transfer Line Chilldown

June 1, 2004
Author(s)
N T. Van Dresar, James D. Siegwarth
The transient behavior of a small-scale cryogenic transfer line was investigated during chilldown to cryogenic temperatures. The vacuum-jacketed apparatus consisted of a verticle tube followed by a near-horizontal tube. The tube diameter was 1 cm and the

Reference Correlations for the Viscosity and Thermal Conductivity of n-Undecane

September 26, 2017
Author(s)
Marc J. Assael, T.B. Papalas, Marcia L. Huber
… valid from the triple point to 700 K, at pressures up to 500 MPa, with densities below 776.86 kg m-3. The estimated … to 60 MPa over the temperature range 260 K to 520 K is 5.7%. The correlation behaves in a smooth manner over the …

ROBOTICALLY CONTROLLED MM-WAVE NEAR-FIELD PATTERN RANGE

October 21, 2012
Author(s)
Josh Gordon, David R. Novotny, Jeffrey R. Guerrieri, Jason Coder, Michael Francis
… antennas and quasi-optical components from 50 GHz to 500 GHz. This range is intended to address the need for …

Double-Focusing Thermal Triple-Axis Spectrometer at the NCNR

February 2, 2012
Author(s)
Y. Chen, Sung Chang, Yang Zhao, Songxue Chi, William D. Ratcliff, B. G. Ueland, Ross Erwin
… Center for Neutron Research (NCNR) is located at the BT-7 beam port. The 165 mm diameter reactor beam is equipped … which provide incident energies for 5 meV to above 500 meV. The computer controlled analyzer system offers six …
Displaying 601 - 625 of 1600
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