SIGNIFICANT REDUCTION IN DROPLET EJECTION FOR TERMINAL VELOCITY IMPACT USING A COMBINATION OF SUPERHYDROPHILIC & SUPERHYDROPHOBIC SIEVE

Kumar, Arvind and Tripathy, Abinash and Raj, Shivani and Sen, Prosenjit (2018) SIGNIFICANT REDUCTION IN DROPLET EJECTION FOR TERMINAL VELOCITY IMPACT USING A COMBINATION OF SUPERHYDROPHILIC & SUPERHYDROPHOBIC SIEVE. In: 31st IEEE International Conference on Micro Electro Mechanical Systems (MEMS), JAN 21-25, 2018, Belfast, NORTH IRELAND, pp. 257-260.

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Abstract

Superhydrophobic meshes provide a unique structure that can be used to develop rain-repellent air transparent surfaces. It is however a significant challenge to stop water ejection from these meshes having submillimetre pores when droplets impact them at terminal velocities (V-D similar to 8 m/s). In this work, we have studied the relative velocities of the jets ejected from nanostructured meshes having different geometries and wettabilities. Based on our study we demonstrate a combination of superhydrophilic-superhydrophobic copper mesh which leads to less than 6x10(-4)% liquid ejection for impact of 20 droplets at terminal velocity.

Item Type:	Conference Proceedings
Series.:	Proceedings IEEE Micro Electro Mechanical Systems
Publisher:	IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Additional Information:	Copyright of this article belong to IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	05 Jul 2018 15:24
Last Modified:	05 Jul 2018 15:24
URI:	http://eprints.iisc.ac.in/id/eprint/60157

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