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Calibration of the QCM/SAW Cascade Impactor for Measurement of Ozone in the StratosphereThe Quartz Crystal Microbalance Surface Acoustic Wave (QCM/SAW) cascade impactor collects size-fractionated distributions of aerosols on a series of 10 MHz quartz crystals and employs SAW devices coated with chemical sensors for gas detection. Presently, we are calibrating the ER-2 certified QCM/SAW cascade impactor in the laboratory for the detection of ozone. Experiments have been performed to characterize the QCM and SAW mass loading, saturation limits, mass frequency relationships, and sensitivity. We are also characterizing sampling efficiency by measuring the loss of ozone on different materials. There are parallel experiments underway to measure the variations in the sensitivity and response of the QCM/SAW crystals as a function of temperature and pressure. Results of the work to date will be shown.
Document ID
Acquisition Source
Document Type
Conference Paper
Wright, Cassandra K.
(Howard Univ. Washington, DC United States)
Sims, S. C.
(Howard Univ. Washington, DC United States)
Peterson, C. B.
(Howard Univ. Washington, DC United States)
Morris, V. R.
(Howard Univ. Washington, DC United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1997
Publication Information
Publication: The First National Student Conference: NASA University Research Centers at Minority Institutions
Subject Category
Accession Number
Funding Number(s)
Distribution Limits
Public Use Permitted.
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