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This study deals with self cleaning surfaces, where the wetting properties are controlled by the different external stimuli. ZnO and TiO2 structures are fabricated by femtosecond laser irradiation of Si wafers and their subsequent coating with ZnO or TiO2 by pulsed laser deposition (PLD). In the present experiment, the ZnO surface is coated by a thin layer of hydrophobic and dielectric Teflon. The...
A silicon swimming robot or pond skating device has been demonstrated. It floats on liquid surfaces using surface tension and is capable of movement using electrowetting on dielectric (EWOD) based propulsion. Its dimensions are 6 times 9 mm with a thickness of 380 mum. The driving mechanism involves the trapping of air bubbles within the liquid onto the hydrophobic surface of the device with the subsequent...
Digitized heat transfer, or DHT, is a new technique for the thermal management of electronic devices where discrete droplets are used in place of continuous flows. This paper investigates the thermal management potential of a DHT system through the numerical solution of the mass, momentum, and energy equations of a simplified droplet travelling between heated parallel plates. The analysis shows much...
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