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NIST Measurement Science and Engineering Research Grants
DETERMINING THE OPTICAL PROPERTIES OF CARBONACEOUS NANOPARTICLES IN ATMOSPHERIC AEROSOLS BY ELECTRON IMAGING AND MONOCHROMATED ELECTRON ENERGY LOSS SPECTROSCOPY
RECIPIENT: Arizona State University, Tempe, AZ
This proposal involves the development of techniques to measure the physical properties of poorly characterized environmental nanomaterials that have important consequences for both climate change and human health. Aerosols containing light-absorbing carbon (including elemental carbon, black carbon, brown carbon, etc.) from urbanized continental regions have a strong impact on the global climate, especially in the Northern Hemisphere where most industrial and urban activity is located. Unfortunately, the physical and chemical properties of carbon combustion aerosols in the atmosphere are not well characterized. This proposal will use electron microscopy and monochromated electron energy-loss spectroscopy to study atmospheric aerosols collected in-situ in several ground- and aircraft-based aerosol studies. If successful, this work will contribute to a substantial improvement of the current state of our knowledge of the optical properties of these critically important aerosols, thereby improving our confidence in these measurements. This research has a high potential to benefit climate change science through the provision of fundamental high-resolution data for climate change applications.
Public contact (for project information):
ASU Media Relations Office, 480-965-3502
NIST Program Office Contact:
Jason Boehm, 301-975-8678