2 papers
physics.optics2023
Photonic stopband and reflectance asymmetry from thickness gradient in opals
Alex Grant, Colm O'Dwyer
The influence of thickness gradient and structural order on the spectral response of opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented.…
physics.optics2023
Dispersion and Thickness Control in Evaporation-induced Self-Assembly of Opal Photonic Crystals
Alex Grant, Alex Lonergan, Colm O'Dwyer
Opals are naturally occurring photonic crystals which can be formed easily using low-cost self-assembly methods. While the optical behaviour of opals has received significant atten…