Journal
LANGMUIR
Volume 19, Issue 4, Pages 977-980Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la0207365
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By fixing charged colloidal crystals in a poly(acrylamide) hydrogel matrix, we fabricated photonic crystals whose diffraction peak wavelengths were tunable by applying mechanical stress. The reflection spectrum for a single crystal grain was measured by applying microspectroscopy under compression. The photonic band gap wavelength shifted linearly and reversibly over almost the entire visible light wavelength region (460-810 nm).
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