Cho: controlling the bubbles of boiling water using a small electric charge


October 30, 2015

cho control bubbles electric charge

Boiling water, with its commotion of bubbles that rise from a surface as water comes to a boil, is central to most electric power plants, heating and cooling systems, and desalination plants. Now, for the first time, researchers at MIT have found a way to control this process, literally with the flick of an electrical switch.

The system, which could improve the efficiency of electric power generation and other processes, is described in a paper by Department of Mechanical Engineering Professor Evelyn Wang, graduate student Jeremy Cho, and recent graduate Jordan Mizerak ’14, published in the journal Nature Communications.

This degree of control over the boiling process, independent of temperature, Wang says, has not previously been demonstrated despite the ubiquity of boiling in industrial processes. Other systems have been developed to control boiling using electric fields, but these have required special fluids rather than water, and a thousandfold higher voltages, making them economically impractical for most uses.  Read more

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