Smart dust: Ferromagnetic photonic crystals derived from porous silicon

Michael J. Sailor, Yang Yang Li, Nathan Trujillo, Jason R. Dorvee

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Micron-sized magnetic particles consisting of a porous Si photonic crystal with attached Fe nanoparticles are prepared. The photonic crystals are generated by electrochemically etching a porous multilayered dielectric mirror into silicon. The film is removed from the Si substrate and magnetic Fe nanoparticles are deposited on the mirror from a colloidal dispersion. The film is then fractured into small particles, yielding microscopic magnetic photonic crystals that are brightly colored on one side and dark black on the other. The magnetic porous silicon photonic crystals can be flipped between the colored side and the dark side by application of a small magnetic field. Switching of the particles at a rate of 175 Hz is demonstrated.
Original languageEnglish
Title of host publicationProceedings - Electrochemical Society
Pages383-388
VolumePV 2004-19
Publication statusPublished - 2006
Externally publishedYes
Event206th Electrochemical Society Meeting - Honolulu, HI, United States
Duration: 3 Oct 20048 Oct 2004

Publication series

Name
VolumePV 2004-19

Conference

Conference206th Electrochemical Society Meeting
PlaceUnited States
CityHonolulu, HI
Period3/10/048/10/04

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