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Displaying 7426 - 7450 of 143726

Local Structure and Dynamics Studied by Force Modulation Spectroscopy and Imaging

October 12, 2021
Author(s)
William J. Price, P K. Kuo, T R. Lee, Z C. Ying, Gang-Yu Liu
Using nanoengineered structures of self-assembled monolayers on gold, asystematic investigation was conducted to study the sensitivity of force modulation AFM to molecular level packing, domain boundaries, and chemical functionality. Tip-surface contact

Long-Term Environmental Fatigue of Pultruded Glass-Fiber-Reinforced Composites

October 12, 2021
Author(s)
Kate Liao, Carl R. Schultesiz, Donald L. Hunston
Pultruded glass-fiber-reinforced vinyl ester composite coupons were subjected to four-point-bend fatigue in various environments to study long-term durability for infrastructure applications. Several groups of specimens were aged in water or in water

Low Dielectric Constant Nanocomposite Thin Films Based on Silica Nanoparticle and Organic Thermosets

October 12, 2021
Author(s)
Q Lin, Stephen Cohen, Lynne Gignac, Brian Herbst, David Klaus, Eva Simonyi, Jeffrey Hedrick, John Warlaumont, Hae-Jeong Lee, Wen-Li Wu
Low dielectric constant (low-k) nanocomposite thin films have been prepared by spin coating and thermal cure of solution mixtures of two organic low-k thermoset pre-polymers and a silica nanoparticle with an average diameter of about 8nm. The electrical

Low Temperature Compaction of Nanosize Powders

October 12, 2021
Author(s)
E J. Gonzalez, Gasper J. Piermarini
In recent years there has been a strong interest in the processing of nanosize ceramic powders because of the potential of sintering them at low temperatures and also because ceramic pieces made of nanosize gram structures may exhibit superior mechanical

Low-energy electron collisions with sodium: Scattering of spin-polarized electrons

October 12, 2021
Author(s)
H L. Zhou, B L. Whitten, W K. Trail, M A. Morrison, K B. MacAdam, K Bartschat, D W. Norcross
The electron-sodium system is an excellent prototype of non-relativistic electron scattering from a quasi-one-electron atomic target, and is tractable both experimentally and theoretically. Recently, this system has been studied in a series of

Low-Temperature Kinetics of the Reaction of the OH Radical With Hydrogen Peroxide

October 12, 2021
Author(s)
A B. Vakhtin, D C. McCabe, A R. Ravishankara, S R. Leone
The kinetics of the reaction of the OH radical with hydrogen peroxide. H 2O 2 are studied over a temperature range of 96-296 K. The low-temperature environment is provided by a pulsed Laval nozzle supersonic expansion of nitrogen with admixed H 2O 2

Magnetic depth profiling Co/Cu multilayers to investigate magnetoresistance

October 12, 2021
Author(s)
John Unguris, D. Tulchinsky, Michael H. Kelley, Julie Borchers, Joseph Dura, Charles Majkrzak, S. Y. Hsu, R. Loloee, W. P. Pratt, J. Bass
The magnetic microstructure responsible for the metastable high resistance state of weakly coupled, as-prepared [Co(6nm)/Cu(6nm)] 20 multilayers was analyzed using polarized neutron reflectivity and scanning electron microscopy with polarization analysis

Magnetoelectric Nanocomposite Thin Films Designed by Composition Spreads

October 12, 2021
Author(s)
Makoto Murakami, C Gao, K S. Chang, B Hu, M A. Aronova, C L. Lin, Jason Hattrick-Simpers, S E. Lofland, L Knauss, Leonid A. Bendersky, M. Wuttig, Ichiro Takeuchi
Multiferroic materials Superscript (1,2) can exhibit magnetoelectric (ME) effects Superscript (3-5), which are of great interest for novel device applications including inexpensive ultrasensitive magnetometer approaching the sensitivity of SQUID

MALDI TOF MS Analysis of Chan End Functonalized Polymers

October 12, 2021
Author(s)
Kathleen M. Flynn, Barry J. Bauer, Kathryn Beers, S Bencherif, H M. Byrd, Sheng Lin-Gibson
Recently, we and other research laboratories have developed methods whereby an organic species is covalently attached to the polymer forming an organic salt to analyze by matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI
Displaying 7426 - 7450 of 143726
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