Improving the opal-based photonic crystals by noise-assisted crystallisation

W. Khunsin; G. Kocher; S. G. Romanov; C. M. Sotomayor Torres

doi:10.1117/12.799253

3 April 2008 Improving the opal-based photonic crystals by noise-assisted crystallisation

W. Khunsin, G. Kocher, S. G. Romanov, C. M. Sotomayor Torres

Proceedings Volume 6793, International Workshop and Conference on Photonics and Nanotechnology 2007; 67930B (2008) https://doi.org/10.1117/12.799253
Event: International Workshop and Conference on Photonics and Nanotechnology 2007, 2007, Pattaya, Thailand

Abstract

Crystal ordering of colloidal self-assembled photonic crystals fabricated by vertical drawing deposition technique has been improved following application of acoustic noise vibrations. The scanning electron microscopy has confirmed the improvement in the crystal order on the surface (111) plane and has demonstrated that thin opal films crystallized under acoustic agitation consist of similarly oriented crystallites, the characteristic transverse dimension of which is larger compared to that of sample grown without acoustic field. Three-dimensional lattice arrangement of the opal crystal has been examined by means of laser diffraction and optical transmission spectroscopy. Novel approach towards optical characterisation of the opal crystallinity has been suggested.

Citation Download Citation

W. Khunsin, G. Kocher, S. G. Romanov, and C. M. Sotomayor Torres "Improving the opal-based photonic crystals by noise-assisted crystallisation", Proc. SPIE 6793, International Workshop and Conference on Photonics and Nanotechnology 2007, 67930B (3 April 2008); https://doi.org/10.1117/12.799253

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KEYWORDS

Crystals

Diffraction

Photonic crystals

Acoustics

Optical spheres

Scanning electron microscopy

Molecular self-assembly

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