15 September 2004 Application of pressure to shift the bandgap in polystyrene-based photonic crystals
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We describe a simple technique for the selective area modification of the bandgap in planar 3-D photonic crystals (PhC). The PhCs are grown by controlled drying of monosized polystyrene spheres. Uniaxial pressure of 41 MPa can produce a shift in the bandgap of ~90 nm from 230 nm spheres. An unexpected broadening of the bandgap is attributed to the change in topology associated with large necks formed between spheres at pressures greater than 10 MPa.
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Nigel P. Johnson, Nigel P. Johnson, Ali Z. Khokhar, Ali Z. Khokhar, Martyn A. McLachlan, Martyn A. McLachlan, David W. McComb, David W. McComb, Richard M. De La Rue, Richard M. De La Rue, } "Application of pressure to shift the bandgap in polystyrene-based photonic crystals", Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); doi: 10.1117/12.546533; https://doi.org/10.1117/12.546533


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