Photonic crystal composites with reversible high-frequency stop band shifts
Foulger, S., Jiang, P., Lattam, A., Smith, D., Ballato, J., Dausch, D., ... Stoner, B. (2003). Photonic crystal composites with reversible high-frequency stop band shifts. Advanced Materials, 15(9), 685-689. DOI: 10.1002/adma.200304566
The fabrication of photonic crystal composites composed of encapsulated electrostatically stabilized colloidal arrays with tailorable thermomechanical properties is introduced. Composites with sub-ambient Tg exhibited reversible mechanochromic characteristics and a 172 nm stop-band tuning range, and could be modulated up to frequencies of 200 Hz. The Figure shows reflective characteristics of the composites at different strain levels (see also inside front cover).