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Multifunctional Environmental Digital Scanning Electron Microprobe (MEDSEM)

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX15CP69P
Agency Tracking Number: 150032
Amount: $124,988.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: T8.01
Solicitation Number: N/A
Solicitation Year: 2015
Award Year: 2015
Award Start Date (Proposal Award Date): 2015-06-17
Award End Date (Contract End Date): 2016-06-17
Small Business Information
1225 S. Shamrock Ave
Monrovia, CA 91016-4244
United States
DUNS: 168312028
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Tom George
 VP Operations
 (626) 381-9974
Business Contact
 Naresh Menon
Title: CEO
Phone: (626) 381-9974
Research Institution
 Lisa Miller
1200 East California Boulevard
Pasadena, CA 91125-0001
United States

 (626) 395-3339
 Domestic Nonprofit Research Organization

Chromologic (CL) and the California Institute of Technology (Caltech) propose to develop and demonstrate a Multifunctional Environmental Digital Scanning Electron Microprobe (MEDSEM) instrument that transmits high-energy beams of electrons sequentially from a two-dimensional array of miniaturized electron probes into a planetary atmosphere, and these electrons will strike solid or liquid planetary surfaces to simultaneously generate a wealth of spatially-mapped compositional information. MEDSEM will simultaneously measure X-ray Fluorescence (XRF), Backscattered Electron Spectra, Optical Spectra and Mass Spectra.
Caltech will transfer to CL the microfabrication technology for vacuum-encapsulating, electron-transmissive SiN membranes, the key enabling component without which MEDSEM would not be possible. Caltech will also transfer the results of electron-optic simulations performed for optimizing the MEDSEM instrument configuration.
The 12-month Phase I effort will be aimed at demonstrating the proof-of-principle for MEDSEM via an experimental setup made up of mostly commercial-off-the-shelf (COTS) parts: miniature electron sources, an x-ray detector and a double-chambered test setup. High-energy electrons will be generated in the first, evacuated chamber, and these electrons will pass through the Caltech-fabricated SiN membrane into the second chamber (maintained at Martian ambient pressure), to strike planetary analog samples thereby generating characteristic XRF. The XRF spectra will be captured by a COTS x-ray detector which is present in the second chamber.
Contingent on a successful, follow-on, Phase II effort, the proof-of-principle experiment will be expanded to demonstrate the remaining simultaneous measurement modalities, namely the acquisition of Backscattered Electron Spectra, Optical Spectra and Mass Spectra. Microfabrication of the fully-integrated, field-emitter array of miniaturized electron probes will be pursued during Phase II.

* Information listed above is at the time of submission. *

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