Edinburgh Research Explorer

Digital biomagnetism: Electrodeposited multilayer magnetic barcodes

Research output: Contribution to journalArticlepeer-review

  • Justin J. Palfreyman
  • Joshaniel F. K. Cooper
  • Friedo van Belle
  • Bingyan Hong
  • Tom J. Hayward
  • Maria Lopalco
  • Mark Bradley
  • Thanos Mitrealias
  • J. Anthony C. Bland

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)1662-1666
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Issue number10
Publication statusPublished - May 2009


A novel magnetic encoding technique for performing high-throughput biological assays is presented. Electrodeposited Ni/Cu and Co/Cu multilayer pillar structures with a diameter of 15 mu m and a thickness up to 10 mu m are presented as "magnetic barcodes", where the number of unique codes possible increases exponentially with a linear increase in length. A gold cap facilitates the growth of self-assembled monolayers (SAMs), while microdrop printing allows efficient generation of large libraries of tagged probes. Coercivity-tuning techniques are used to exploit a non-proximity encoding methodology compatible with microfluidic flow. (C) 2009 Elsevier B.V. All rights reserved.

    Research areas

  • Coercivity tuning, Electrodeposition, Nickel/copper multilayers, Self-assembled Monolayers, Magnetic barcodes, NANOPARTICLES, HYBRIDIZATION, BIOMOLECULES, TECHNOLOGY, BIOSENSORS

ID: 1480661