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Differential Photoacoustic Particle Absorption Monitor

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX14CL90C
Agency Tracking Number: 124103
Amount: $749,993.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: S1.08
Solicitation Number: N/A
Solicitation Year: 2012
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-07-18
Award End Date (Contract End Date): 2016-07-17
Small Business Information
45 Manning Road
Billerica, MA 01821-3976
United States
DUNS: 030817290
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Zhenhog Yu
 Principal Scientist
 (978) 932-0265
Business Contact
 Cameron Martin
Title: Business Official
Phone: (978) 663-9500
Research Institution

We developed a highly sensitive and compact instrument to directly measure particulate matter (PM) optical absorption. This device is based on differential photoacoustic absorption spectroscopy (DPAS) technique, which is capable of eliminating background interference from gaseous NO2 and engine acoustic noise. This method significantly improves detection sensitivity compared to the single-cell photoacoustic technique. Over the currently used filter-based measurement techniques, it has the following technical advantages:
1) Direct PM absorption detection
2) Real-time measurement system
3) Low background noise
4) Low-cost commercial components

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

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