Phys. Rev. B 66, 195108 (2002) [7 pages]Tunable photonic band gap in self-assembled clusters of floating magnetic particlesReceived 22 March 2002; revised 30 July 2002; published 22 November 2002 We fabricated a 3D photonic crystal consisting of metal coated disk-shaped magnetic particles floating at the liquid-air interface inside a stack of containers. The particles self-assemble into an ordered crystal whose in-plane lattice constant can be varied by external magnetic field in very broad limits. This crystal exhibits photonic stopband at microwave frequencies. The stopband can be continuously tuned by external magnetic field until complete disappearance. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.66.195108
DOI:
10.1103/PhysRevB.66.195108
PACS:
42.70.Qs, 81.16.Dn
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