On-chip manipulation of magnetic beads for integrated immunosensor

Tomohiro Ishikawa, Jaesung Lee, Ryo Miyake

Research output: Contribution to journalArticlepeer-review


The purpose of this work is in-plain manipulation of dispersed magnetic beads on a chip. This makes an immunoassay chip completes all its procedures on itself and eliminates any off chip components. A test chip was drawn in 180 nm standard Complementary Metal Oxide Semiconductor (CMOS) process and tested. Beads those have a diameter of 2.8 μm were diluted and applied onto the chip. The chip successfully manipulated them with an affordable current down to 5 mA.

Original languageEnglish
Pages (from-to)10-13
Number of pages4
JournalIEEJ Transactions on Sensors and Micromachines
Issue number1
Publication statusPublished - 2013


  • Immunoassay
  • Magnetic Beads

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering


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