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Chuan-Hua Chen : Harnessing Surface Energy for Thermal Rectification and Resistive Sensing

Surface energy can be harnessed to introduce new features essential to a variety of engineering systems, such as large-area scalability for phase-change thermal diodes and non-clogging apertures for resistive Coulter counting. In the first case, surface energy drives dropwise condensate to spontaneously jump on a superhydrophobic surface, and the self-propelled motion is exploited to create a planar and orientation-independent thermal diode. In the second case, surface tension is manipulated electrohydrodynamically to produce a cone-jet liquid bridge, which serves as a tunable and deformable aperture for resistive pulse sensing. This presentation will cover both fundamental interfacial phenomena and practical engineering applications.

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