Photonic crystal sensors: An overview

Substance specific chemical sensing with pristine and modified photonic nanoarchitectures occurring in blue butterfly wing scales

“…This allows for their use as selective chemical sensors for volatile vapors present in the ambient atmosphere. Due to the fast development of the response signal and relatively easy optical readout of optical sensors, various materials and setups are under investigation for fast and chemically selective sensors [7][8][9]. Among the high variety of inorganic materials there are also promising biological or bioinspired materials for sensors [3,10].…”

Photonic crystal waveguides by direct writing of e-beam on self-assembled photonic crystals

“…The guided modes in the photonic crystal waveguide structure can be tuned by controlling the lattice constant and the effective refractive index of the surrounding crystal. The effective index of the crystal can be modified by infiltrating the air voids of the crystal with higher index materials such as ethanol, ethylene glycol, silica and zinc oxide, thus paving the way for photonic crystal-based sensor applications (Nair and Vijaya 2010).…”

Dielectric Photonic Crystals

“…Nanocavities are excellent environments for sensors [132]. A high Q enhances the analyte detection sensitivity while a small V is conducive for single particle detection.…”