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Proceedings Paper

Magnetic actuation for microfluidics based on ferrofluid droplets
Author(s): Nam-Trung Nguyen; Kon Meng Ng; Xiaoyang Huang
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Paper Abstract

In this paper, we report the dynamic behavior of a ferro fluid droplet in time-dependent magnetic fields. The magnetic field was generated by an array of planar coils, which were fabricated on a double-sided printed circuit board (PCB). The permanent magnetic moment of the ferro fluid droplet was created using the field of a pair of permanent magnets. The motion of the ferro fluid droplet is further aligned with the permanent magnetic field of a pair of planar coils. Two other in serial connected planar coils on the other side of the PCB displaces the droplet along a line. The direction of the droplet motion can be controlled by switching the electric current passing through them. Different paprameters affecting the motion of the ferro fluid droplet such as the droplet size, the viscosity of the surrounding medium, the electric current, and the switching frequency were investigated.

Paper Details

Date Published: 8 January 2007
PDF: 6 pages
Proc. SPIE 6414, Smart Structures, Devices, and Systems III, 64140T (8 January 2007); doi: 10.1117/12.696494
Show Author Affiliations
Nam-Trung Nguyen, Nanyang Technological Univ. (Singapore)
Kon Meng Ng, Nanyang Technological Univ. (Singapore)
Xiaoyang Huang, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 6414:
Smart Structures, Devices, and Systems III
Said F. Al-Sarawi, Editor(s)

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