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Displaying 751 - 775 of 4633

Measurements and Modeling of Ion Energy Distributions in High-Density, Radio-Frequency Biased CF 4 Discharges

May 1, 2002
Author(s)
Mark A. Sobolewski, Yicheng Wang, A N. Goyette
… Models of ion dynamics in radio-frequency (rf) biased, high-density plasma sheaths are needed to predict ion bombardment energies in plasma simulations. To test these models, we have measured ion energy distributions (IEDs) in pure CF 4 discharges at … CF4, high-density plasma, inductively coupled discharge, ion energy distribution, plasma processing, radio-frequency …

Organic-Inorganic Hybrid Structures with Dendrimers: A Small Angle X-Ray Scattering Study on a Mesoscopic Model System

January 1, 2000
Author(s)
Franziska Grohn, Y A. Akpalu, 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 … by small angle x-ray scattering (SAXS) show that the gold particles are formed inside the dendrimer and located … dendrimer, gold, host-guest nanoscale synthesis, nanocrystal, …

THE FAST INITIAL THRESHOLD VOLTAGE SHIFT: NBTI OR HIGH-FIELD STRESS

April 27, 2008
Author(s)
Jason P. Campbell, Kin P. Cheung, John S. Suehle
Recent 'NBTI' studies have come to involve very high electric fields, yet these same studies are used to criticize the lower field 'NBTI' models. This study examines both high- and low-field degradation phenomena by monitoring the initial threshold voltage

Changes in Lactate and Other Ions in Plaque and Saliva After a Fluoride Rinse and Subsequent Sucrose Administration

January 1, 2002
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, A L. Galvin
… studies showing a pH mediated increase in the latter ions, was due to salivary clearance or diffusive loss into … of the rinses. Similarly the site distribution of all ions appeared to be not only controlled by these factors … (fluoride, sucrose and water), as well as the clearance of ions into these components require further study if a …

Charge-exchange processes in EBIT: implications for spectral analysis of few-electron Fe ions

April 16, 2025
Author(s)
Yang Yang, FNU Dipti, Amy Gall, Nancy Brickhouse, Hunter Staiger, Galen O'Neil, Paul Szypryt, Adam Foster, David Schultz, Aung Naing, Joseph Tan, Daniel Swetz, Michael Fogle, Randall Smith, Yuri Ralchenko, Endre Takacs
… present measured and simulated spectra of few-electron Fe ions, where we used a single charge-exchange factor to reduce … implications for spectral analysis of few-electron Fe ions …

Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl

October 13, 2020
Author(s)
Fei Wang, Hayden Evans, Kwangnam Kim, Liang Yin, Yiliang Li, Ping-Chun Tsai, Jue Liu, Saul H. Lapidus, Craig Brown, Donald J. Siegel, Yet-Ming Chiang
… been reported, but in which the atomic-level mechanism of ion migration is unclear. The stable phase is highly … together show conclusively that the high lithium ion conductivity of cubic Li 2 OHCl is correlated to … Ion conductor, plastic crystals, Maximum entropy method, …

Diffusionless Electron Transfer of Microperoxidase-11 on Gold Electrodes

July 9, 1999
Author(s)
T Ruzgas, Adolfas Gaigalas
… in measured ET rates. The MP-11 was immobilized on gold electrodes using several protocols: (electrode A) the … ET rates of the order of 20's -1 ; (B) MP-11 was bound to gold electrodes by Lomant's reagent and gave an ET rate close to 4000's -1 ; and ( C) physisorbed MP-11 on gold electrodes with self assembled monolayer, SAM, of alkane …

Effects of Argon Gas-Cluster Ion Beam Processing on Surface Roughness, Crystalline Orientation Texture, Magnetic, and Giant Magnetoresistance Properties of A-Fe 2 O 3 Bottom Spin-Valves

October 12, 2021
Author(s)
S Bae, J H. Judy, P J. Chen, L Gan, William F. Egelhoff Jr., J Hautala
… The effects of gas-cluster ion beam (GCIB) processing on the surface roughness, … argon gas cluster, giant magnetoresistance, ion beam processing … Effects of Argon Gas-Cluster Ion Beam Processing on Surface Roughness, Crystalline …

NIST Measurement Services: Radiance Temperature Calibrations

January 1, 1998
Author(s)
Charles E. Gibson, Benjamin K. Tsai, Albert C. Parr
… the ITS-90 scale is first fixed at the freezing point of gold (t 90 = 1064.18 [degrees] C) and is then extended to … radiance of a tungsten ribbon filament lamp to that of a gold fixed-point blackbody at a wavelength of 655.3 mm. A … gold-point blackbody, pyrometers, pyrometry, radiation …

Tensile Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates

July 19, 2022
Author(s)
Dash Weeks, Nicholas Derimow, Jake Benzing
… from the centers of four welded 316L stainless steel plates, each produced by a different vendor. Relatively large … conducted at 77 K and 4 K on the same four sets of welded plates. … Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates …

3D Imaging of Diatoms with Ion-abrasion Scanning Electron Microscopy

June 9, 2009
Author(s)
Keana C. Scott, Mark Hildebrand, Sang Kim, Dan Shi, Sriram Subramaniam
… Ion-abrasion scanning electron microscopy (IASEM) takes advantage of focused ion beams to abrade thin sections from the surface of bulk … "Diatom", "Ion-abrasion SEM", "Biomineral structure formation", … 3D Imaging of Diatoms with Ion-abrasion Scanning Electron Microscopy …

Unexpected Peaks in Tandem Mass Spectra due to Reaction of Product Ions with Water in Mass Spectrometer Collision Cells

December 15, 2014
Author(s)
Pedatsur Neta, Mahnaz Farahani, Yamil Simon, Yuxue Liang, Xiaoyu Yang, Stephen E. Stein
… While determining the fragmentation pathways of positive ions of drugs, pesticides, metabolites, and other compounds, … mass spectrometry, we noticed that certain product ions react with water in the collision cell. This reaction is … of species that cannot be formed from the precursor ions by known fragmentation pathways. As a result, tandem …

Chemical Discrimination of Multilayered Paint Cross Sections for Potential Forensic Applications using Time-of-Flight Secondary Ion Mass Spectrometry

June 15, 2018
Author(s)
Shinichiro N. Muramoto, J Greg Gillen, Eric S. Windsor
… Time-of-flight secondary ion mass spectrometry (ToF-SIMS) equipped with a bismuth imaging source and an argon gas cluster ion beam (GCIB) was used to image polished cross-sections of … of the individual layers was possible after a GCIB sputter ion dose of 7 × 1015 ions/cm2 was applied for the removal of …
Displaying 751 - 775 of 4633
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