On-chip detection and separation of micro-particles using magnetized microtools driven by focused magnetic field

Shinya Sakuma, Kazuhisa Onda, Yoko Yamanishi, Fumihito Arai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 a chip. Drive frequency was improved about 10 times faster (up to 180 Hz). We applied it for sorting of copolymer beads in a chip. MMT is put in the microchannel. The size of the bead was measured by image processing (15 Hz). Moving frequency of the MMT was made higher than the sampling frequency of measurement and secure sorting was achieved.

Original languageEnglish
Title of host publication2009 IEEE International Conference on Robotics and Automation, ICRA '09
Pages1820-1825
Number of pages6
DOIs
Publication statusPublished - 2009 Nov 2
Event2009 IEEE International Conference on Robotics and Automation, ICRA '09 - Kobe, Japan
Duration: 2009 May 122009 May 17

Publication series

NameProceedings - IEEE International Conference on Robotics and Automation
ISSN (Print)1050-4729

Conference

Conference2009 IEEE International Conference on Robotics and Automation, ICRA '09
CountryJapan
CityKobe
Period09/5/1209/5/17

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ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Artificial Intelligence
  • Electrical and Electronic Engineering

Cite this

Sakuma, S., Onda, K., Yamanishi, Y., & Arai, F. (2009). On-chip detection and separation of micro-particles using magnetized microtools driven by focused magnetic field. In 2009 IEEE International Conference on Robotics and Automation, ICRA '09 (pp. 1820-1825). [5152311] (Proceedings - IEEE International Conference on Robotics and Automation). https://doi.org/10.1109/ROBOT.2009.5152311