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Displaying 8151 - 8175 of 143827

X-Ray Standing Wave Analysis of Overlayer Induced Substrate Relaxation: The Clean and Bi-Covered (110) GaP Surface

October 12, 2021

Author(s)

A Herrera-Gomez, Joseph Woicik, T Kendelewicz, K E. Miyano, W E. Spicer

The relaxation of the surface P atoms, for both the clean and Bi covered GaP (110) surface, was studied with X-Ray Standing Wave Spectroscopy (XSW) using surface sensitive x-ray photoelectron as the XSW modulated signal. The photoemission signal of the

XAFS as a Direct Local Structural Probe in Revealing the Effects of a C Presence in B Diffusion in SiGe Layers

October 12, 2021

Author(s)

M A. Sahiner, J. L. Sarrao, M S. Carroll, C W. Magee, S W. Novak, Joseph Woicik

The local structural information around the germanium atom in boron doped SiGe alloys is important in understanding the dopant diffusion mechanisms. Epitaxial SiGe test structures with B and C markers were grown on Si substrates by using rapid thermal

Accelerating Iterative Equation of State Calculations With Superancillary Phase Boundaries

October 11, 2021

Author(s)

Ian Bell

Iterative calculations are needed to obtain the natural variables of an equation of state from the given state variables when analyzing thermal systems (machinery, systems, even simple cycle analysis). When the given state variables are entropy and

Improved shadow correction for the Marine Optical BuoY, MOBY

October 11, 2021

Author(s)

Kenneth Voss, Edouard Leymarie, Stephanie Flora, B. Carol Johnson, Arthur Gleason, Mark Yarbrough, Michael Feinholz, Terrance Houlihan

A 3-D instrument self-shading correction has been developed for the MOBY upwelling radiance measurements. This correction was tested using the 23 year time series of MOBY measurements, at the Lanai, Hawaii site. The correction is small (less than 2%)

Interleaved Electro-Optic Dual Comb Generation to Expand Bandwidth and Scan Rate for Molecular Spectroscopy and Dynamics Studies near 1.6 mm

October 11, 2021

Author(s)

Jasper Stroud, James Simon, Gerd Wagner, David Plusquellic

A chirped-pulse interleaving method is reported for generation of dual optical frequency combs based on electro-optic phase modulators (EOM) in a free-running all-fiber based system. The interleaving scheme effectively separates the EOM's (+) and (-)

Microwave characterization of graphene inks

October 11, 2021

Author(s)

Jan Obrzut, Ana C. M. Moraes

Systematic charge transport characterization of solution-processed graphene inks using ethyl cellulose polymer as a binder/stabilizer, showed graphene patterns with high mobility ( 160 cm2 V-1 s-1), low energy gap, thermally activated charge transport and

Sequential Bayesian experiment design for adaptive Ramsey sequence measurements.

October 11, 2021

Author(s)

Robert D. McMichael, Sergey Dushenko, Sean Blakley

The Ramsey sequence is a canonical example of a quantum phase determination for a spin qubit, but when readout fidelity is low, as with NV centers, measurement efficiency can be increased by focusing measurement resources on the most productive settings

The Lieb-Robinson light cone for power-law interactions

October 11, 2021

Author(s)

Minh Tran, Andrew Guo, Christopher Baldwin, Adam Ehrenberg, Alexey Gorshkov, Andrew Lucas

DUAL DIELECTROPHORETIC ASSEMBLY OF CO-CULTURES FOR THE STUDY OF CELL MIGRATION INDUCED BY PHYSICAL INTERACTIONS

October 10, 2021

Author(s)

Brian J. Nablo, Darwin Reyes-Hernandez

We present the differences in cell migration patterns of endothelial cells when they physically interact with cancer cells through a porous membrane barrier (1.2 µm pore size). Cells were dielectrophoretically trapped on opposite sides of an 11 µm thick

Calculating Voxel-Polyhedron Intersections for Meshing Images

October 9, 2021

Author(s)

Stephen A. Langer, Andrew C.E. Reid

Finite element meshes constructed from 3D images are useful in materials science and medical applications when it is necessary to model the actual geometry of a sample, rather than an idealized approximation of it. Constructing the mesh involves computing

A Framework for the Development of a Targeted Gas Chromatography Mass Spectrometry (GC-MS) Method for the Analysis of Synthetic Cannabinoids

October 8, 2021

Author(s)

Edward Sisco, Amber Burns, Arun Moorthy

With the increased presence of novel psychoactive substances (NPSs) in casework, seized drug analysis has become more complex and challenging. To assist in addressing these challenges, a suite of targeted gas chromatography mass spectrometry (GC-MS)

An assessment of different approaches for measuring crack sizes in fatigue and fracture mechanics specimens

October 8, 2021

Author(s)

Enrico Lucon

Several fatigue and fracture mechanics test standards prescribe the use of fatigue precracked specimens, and measured initial and final crack sizes are required for the analyses. All these test methods utilize the X-Point Average Method, with X = 2  9

Development and Evaluation of a Targeted Gas Chromatography Mass Spectrometry (GC-MS) Method for Analysis of Synthetic Cathinones

October 8, 2021

Author(s)

Edward Sisco, Amber Burns, Arun Moorthy

With the increased prevalence of novel psychoactive substances (NPSs), seized drug analysis has become more complex and challenging due, in part, to changing chemical structures and isomeric species. To assist in addressing these challenges a series of

Investigating the Transfer of Drug Particulate onto Evidence Packaging During Routine Case Analysis

October 8, 2021

Author(s)

Edward Sisco, Liz Robinson, Rebecca Mead, Charles R Miller

The presence of drug residue and drug background in a forensic context continues to be of interest for a variety of reasons ranging from its potential use as a means for presumptive identification to ensuring the safety and well-being of drug chemists

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