Top-down design of magnonic crystals from bottom-up magnetic nanoparticles through protein arrays

Mitsuhiro Okuda, Thomas Schwarze, Jean-Charles Eloi, Sarah E. Ward Jones, Peter J Heard, Andrei Sarua, E Ahmad, Volodymyr V Kruglyak, Dirk Grundler, Walther Schwarzacher

Research output: Contribution to journalArticle (Academic Journal)

11 Citations (Scopus)
250 Downloads (Pure)

Abstract

We show that chemical fixation enables top-down micro-machining of large periodic 3D arrays of protein-encapsulated magnetic nanoparticles (NPs) without loss of order. We machined 3D micro-cubes containing a superlattice of NPs by means of focused ion beam etching, integrated an individual micro-cube to a thin-film coplanar wave guide and measured the resonant microwave response. Our work represents a major step towards well-defined magnonic metamaterials created from the self-assembly of magnetic nanoparticles.
Original languageEnglish
Article number155301
Number of pages6
JournalNanotechnology
Volume28
Issue number15
Early online date15 Mar 2017
DOIs
Publication statusPublished - 18 Apr 2017

Keywords

  • Self-assembly
  • magnetic nanoparticle
  • Ferritin
  • Chemical fixation
  • Ferromagnetic resonance
  • Magnonic metamaterial
  • Magnonics

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