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Displaying 26 - 45 of 45

Recent Advances in Ambient Mass Spectrometry of Trace Explosives

May 6, 2018
Author(s)
Thomas Forbes, Edward Sisco
Ambient mass spectrometry has evolved rapidly over the past decade, yielding a plethora of platforms and demonstrating scientific advancements across a range of fields from biological imaging to rapid quality control. These techniques have enabled real

DART-MS analysis of inorganic explosives using high temperature thermal desorption

May 4, 2017
Author(s)
Thomas P. Forbes, Edward R. Sisco, Matthew E. Staymates, John G. Gillen
An ambient mass spectrometry (AMS) platform coupling Joule heating thermal desorption (JHTD) and direct analysis in real time (DART) was developed, generating discretely pulsed rapid heating ramps and elevated temperatures for the detection of inorganic

Beam broadening in transmission EBSD

March 16, 2015
Author(s)
Robert R. Keller, Katherine P. Rice, Mark Stoykovich
Transmission electron backscatter diffraction (t-EBSD), also known as transmission electron forward scatter diffraction (t-EFSD) or transmission Kikuchi diffraction in the SEM (TKD-SEM), can provide significant improvements in spatial resolution over

Violation of the Condon Approximation in Semiconducting Carbon Nanotubes

June 28, 2011
Author(s)
Ming Zheng
A long-held but untested fundamental assumption in Raman spectroscopy of carbon nanotubes is that intensities arising from resonance with incident and scattered photons are equal. We present here the first complete Raman excitation profiles (REPs) for the

Spectrum Simulation in DTSA-II

October 1, 2009
Author(s)
Nicholas W. Ritchie
Spectrum simulation is a useful practical and pedagogical tool. Particularly with complex samples or trace constituents, a simulation can help to understand the limits of the technique and how to optimize the tools for the optimal measurement. DTSA-II

Forensic Sciences: Review of Status and Needs

February 1, 1999
Author(s)
Alim A. Fatah, Kathleen M. Higgins
This document, Forensic Sciences: Status and Needs, is the product of a two-day meeting sponsored by OLES/NIJ/NIST on March 5-6, 1997. This meeting brought together 44 scientists and administrators with the common goal of helping the forensic science
Displaying 26 - 45 of 45
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