Los Alamos National Laboratory
Metallurgy (MST-6)


Surface enhanced Raman scattering

A team of Los Alamos researchers consisting of Martin Piltch and Dan Couglin, MST-6, Perry Gray, D-6 and Alonso Castro, C-CDE measured the Raman spectrum of uranium hydride and uranium oxide using laser excitation.

Publication: Surface-Enhanced Raman Scattering in insulating materials by artificial plasmon production: Application to uranium compounds. M.S. Piltch, P.C. Gray, J.C. Cooley, M. Manley. Philosophical Magazine 89, (22), (2009) p1947.

Spectrometer development

Researchers Martin Piltch MST-6, Perry Gray D-6, Robert Carpenter MST-6, Professor Richard Rubenstein SUNY Downstate Medical Center, Department of Emerging Neurological Disease invented, built and tested a high sensitivity fiber-optics spectrometer (SOFIA) for the antemortem measurement of femtomolar concentrations of prions. These proteins are responsible for transmissible spongiform encephalopathy (mad cow disease) in cattle, scrapie in sheep, and Creuzfeld-Jacob disease in humans. In 2010 the fiber-optics spectrometer was granted a United States Patent (#7,847,941). There are several published papers on the topic in peer-reviewed journals and three additional U.S. patent applications pending.

SOFIA Spectrometer

SOFIA Spectrometer

Perry Gray at Suny

Perry Gray using SOFIA Spectrometer at
SUNY Downstate Medical Center

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