Powerful Actuation of Magnetized Microtool by Focused Magnetic Field on a Disposable Microfluidic Chip

Author

Arai, F. ; Sakuma, S. ; Yamanishi, Y. ; Onda, K.

Author_Institution

Tohoku Univ., Sendai

fYear

2009

fDate

25-29 Jan. 2009

Firstpage

51

Lastpage

54

Abstract

We succeeded in powerful noncontact actuation of magnetically driven microtool (MMT) by magnetizing it and focusing magnetic field in a microfluidic chip. Novelty of this paper is summarized as follows. (1) We employed neodium powder as the main component of MMT. The density of magnetic flux was improved about 100 times larger after magnetization. (2) We fabricated a pair of magnetic sharp needles in the chip by electroplating. MMT was placed between the needles and the density of magnetic flux was improved about 3 times larger. As a result, we succeeded in powerful actuation of MMT in the chip. Drive frequency was improved about 10 times faster (up to 180 Hz).

Keywords

electroplating; magnetic fields; microfluidics; disposable microfluidic chip; electroplating; focused magnetic field; magnetized microtool; powerful noncontact actuation; Coils; Magnetic fields; Magnetic flux; Microchannel; Microfluidics; Needles; Permanent magnets; Powders; Soft magnetic materials; Sorting;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 2009. MEMS 2009. IEEE 22nd International Conference on

Conference_Location

Sorrento

ISSN

1084-6999

Print_ISBN

978-1-4244-2977-6

Electronic_ISBN

1084-6999

Type

conf

DOI

10.1109/MEMSYS.2009.4805316

Filename

4805316