Versatile Instrument for Broadband Measurements of Aerosol Extinction and Absorption

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-12ER86519
Agency Tracking Number: 98688
Amount: $149,550.00
Phase: Phase I
Program: STTR
Awards Year: 2012
Solicitation Year: 2012
Solicitation Topic Code: 03 f
Solicitation Number: DE-FOA-0000577
Small Business Information
Seaforth, Llc
Campus Delivery - 1320, Engineering Research Center - CSU, Fort Collins, CO, -
DUNS: 020735066
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Azer Yalin
 Dr.
 (970) 266-0130
 azer_yalin@yahoo.com
Business Contact
 Azer Yalin
Title: Dr.
Phone: (970) 266-0130
Email: azer_yalin@yahoo.com
Research Institution
 University of Virginia
 Dept. of Chemistry
Charlottesville, VA, 22904-4319
 () -
 Nonprofit college or university
Abstract
Aerosols play critical roles in the atmosphere influencing, for example, visibility, air quality, and radiative forcing. The heat balance is largely determined by aerosol optical properties and databases of these properties are used as inputs to climate models. For both laboratory and field research, there is a pressing need for high-sensitivity instruments allowing measurement of aerosol optical properties over a broad wavelength range. We will employ cavity enhanced spectroscopy and modulated photoacoustic spectroscopy (PAS) for broadband measurement of spectral aerosol extinction and absorption coefficients, respectively. Knowing extinction and absorption values allows determination of scattering (from the difference) and of albedo. In Phase I, we will show feasibility of a future field instrument allowing, for the first time, high-sensitivity broadband (100s of wavelength channels) measurements of both aerosol extinction and absorption.Commercial Application and other Benefits: Currently there are very limited commercial offerings for sensitive optical measurements of aerosols. In comparison to available products, the proposed instrument offers broadband operation, i.e. hundreds of wavelength channels as opposed to one (or up to three). Commercialization of the proposed instrument will therefore be of strong benefit to the atmospheric science community (university, government, industry). We have support letters from two instrument manufacturers showing their interest in our instrument.

* information listed above is at the time of submission.

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