development of magnetophoresis combined with dielectrophoresis using magnetic path type micro-electrode for separation of micro-particles

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17920
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Analytical chemistry
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: IIGUNI YOSHINORI 名古屋工業大学, 工学(系)研究科(研究院), 助教 (60452215)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 磁気泳動 / 誘電泳動 / 電磁泳動 / 微粒子

Outline of Final Research Achievements

A 500 μm Permalloy wire whose tip was sharpened by electrolytic etching was wound around by an enamel wire with the diameter of 60 μm in a coil shape to form a micro electromagnet, and a needle-like magnetic path type microelectrode was prepared by that its tip was gold-plated to used also as an electrode. In addition, a thin film shaped magnetic path type microelectrode with a thickness of 10 μm was prepared by gold-plating on Permalloy deposited electrically on a chromium patterned by vapor deposition.
By using these two types of magnetic path type microelectrodes, it becomes possible to locally apply a magnetic field and an alternating electric field near its tip, and simultaneous application of magnetophoresis and dielectrophoresis to microparticles in a liquid was succeeded. As this result, specific migration behaviors of maicropaticles affected by magnetophoresis and dielectrophoresis could be observed.

Free Research Field

分析化学