A planar conducting microstructure to guide and confine magnetic beads to a sensing zone

Chinthaka Pasan Gooneratne, Cai Liang, Jürgen Kosel

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

17 Scopus citations

Abstract

A novel planar conducting microstructure is proposed to transport and confine magnetic micro/nano beads to a sensing zone. Manipulation and concentration of magnetic beads are achieved by employing square-shaped conducting micro-loops, with a few hundred nano-meters in thickness, arranged in a unique fashion. These microstructures are designed to produce high magnetic field gradients which are directly proportional to the force applied to manipulate the magnetic beads. Furthermore, the size of the microstructures allows greater maneuverability and control of magnetic beads than what could be achieved by permanent magnets. The aim of the microstructures is to guide magnetic beads from a large area and confine them to a smaller area where for example quantification would take place. Experiments were performed with different concentrations of 2 μm diameter magnetic beads. Experimental results showed that magnetic beads could be successfully guided and confined to the sensing zone. © 2011 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Title of host publicationMicroelectronic Engineering
PublisherElsevier BV
Pages1757-1760
Number of pages4
DOIs
StatePublished - Aug 2011

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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