嘿嘿视频

Prestigious award funds research on the mysteries of charged droplets

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Photo: droplet of water bouncing off surface
This pictures shows a water droplet bouncing due to an applied electric field.

A 嘿嘿视频 chemical engineer has won a five-year, $420,000 early career development award from the National Science Foundation to support research on electrical charges of fluid droplets.

William Ristenpart, an assistant professor who has appointments in both the 嘿嘿视频 Department of Food Science and Technology and the Department of Chemical Engineering and Materials Science, uses high-speed video and a high-resolution electrochemical measuring technique known as 鈥渃hronocoulometry鈥 to answer fundamental questions about how droplets of various liquids acquire an electrical charge.

Findings from these studies are expected to have applications in a number of fields including petroleum and food-oil processing, and manufacture of microchips that are capable of performing multiple laboratory functions.

鈥淭he amount of charge obtained by metal spheres has been known since the time of Maxwell in the 1860s, but 150 years later, we still don鈥檛 understand charge transfer into liquid drops,鈥 Ristenpart said. 鈥淚鈥檓 excited that this research will shed light on a fundamental problem with applications ranging from food science to atmospheric science.鈥

Ristenpart鈥檚 research team investigates the physical, chemical and biological phenomena of fluids, including fluid motion caused by electrical fields, how different food metabolites affect red blood cells, and the behavior of fluids at the microminiaturized scale.

Ristenpart received his doctoral degree from Princeton University in 2005 and his bachelor鈥檚 degree from 嘿嘿视频 in 1999, both in chemical engineering. Before joining the faculty at 嘿嘿视频 in 2008, he served as a postdoctoral fellow at Harvard University.

This National Science Foundation awards program supports academic scientists and engineers in the early stage of their careers, especially by helping them take on graduate students who carry out research as part of their training. The program is aimed at developing lifelong faculty leaders who will integrate education and research.

Media Resources

Pat Bailey, Research news (emphasis: agricultural and nutritional sciences, and veterinary medicine), 530-219-9640, pjbailey@ucdavis.edu

William Ristenpart, Chemical Engineering and Materials Science, 530-752-8780, wdristenpart@ucdavis.edu

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