Jain, V. K. and Pant, R. P. and Kumar, Vinod (2008) APPLICATIONS OF FERROFLUIDS IN MICRO ELECTRO MECHANICAL SYSTEMS (MEMS) AND MICROPUMPS. Magnetohydrodynamics, 44 (4). 417-424 .

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Abstract

The micro-pump is one of the most promising micro-flow devices. At micro-level electronically controlled pumping of any fluid by a mechanical pump is not so easy and reliable. In the realm of nano-tech materials, ferrofluids have unique properties in both liquids and solids and have potential applications for MEMS/NEMS devices. This paper presents two new types of concepts, a micro-flowmeter based on a micro-turbine made using MEMS technology and the other is a micro-pump based on ferrofluidic. actuation. In our first device an optical photovoltaic sensor has also been integrated with this device. and the, micro-turbine rotates with a Speed of 50000 rpm. We have fabricated a ferrofluid-based glass micro-pump of size 20 x 20 x 10 mm(3). in which micro actuation is electrically, controlled by NdFeB (N50) permanent magnets (diameter 5 x 3mm, B(r) = 1400 mT, coercive field H(c) = 840 kA/m) with a ferrofluid bearing. The device is able to pump the fluid at the rate of 10 mu L/actuation.

Item Type:	Article
Subjects:	Mechanics Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	14 Jan 2013 12:53
Last Modified:	14 Jan 2013 12:53
URI:	http://npl.csircentral.net/id/eprint/947

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