News From the Field
Penn Physicists Undo the 'Coffee Ring Effect'
August 17, 2011
A team of University of Pennsylvania physicists has shown how to disrupt the "coffee ring effect"--the ring-shaped stain of particles left over after coffee drops evaporate--by changing the particle shape. The discovery provides new tools for engineers to deposit uniform coatings.
University of Pennsylvania
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The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2012, its budget was $7.0 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.
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