Photonic crystals have proven their potential and are nowadays a familiar concept. They
have been approached from many scientific and technological flanks. Among the many …

The beauty of opals results from a densely packed, highly ordered arrangement of silica
spheres with a diameter of several hundred nanometers. Such ordered nanostructures are …

Analyte-sensitive hydrogels that incorporate optical structures have emerged as sensing
platforms for point-of-care diagnostics. The optical properties of the hydrogel sensors can be …

The idea of photonic crystal came to be when E. Yablonovitch and S. John recommended a
structure in 1987 having periodic alteration of refractive index in one or multiple directions …

To fulfil the promise that complete-photonic-bandgap materials hold for optoelectronics
applications, the incorporation of three-dimensionally engineered defects must be realized …

Abstract 3D photonic crystals (PhCs) and photonic bandgap (PBG) materials have attracted
considerable scientific and technological interest. In order to provide functionality to PhCs …

Photonic crystals (PhCs) have set up a new trend in optical materials thanks to their potential
to control the propagation of light in the linear and nonlinear regimes. These properties can …

This article features recent research progress towards various templating methods for
preparing porous structures with prescribed structural, surface, and morphological …

Herein, we review our latest advancements in nanostructured photoanodes for next
generation photovoltaics in general and dye-sensitized solar cells in particular. Bottom-up …

Organic gain materials (OGMs) currently used in organic lasers and optical amplifiers are
focused on singlet-fluorescence materials, while triplet-phosphorescence-based OGMs …