Snapshot multispectral image (MSI) sensors have been proposed as a key enabler for a
plethora of multispectral imaging applications, from diagnostic medical imaging to remote …

Hyperspectral sensors, combining the functions of photon detection with ultrahigh spectral
resolution in a single device, have emerged as a new class of devices with significant …

A tunable reflectance filter based on a metal–hydrogel–metal structure responsive to
humidity and temperature is reported. The filter employs a poly (N-isopropylacrylamide) …

In this article, a lithography-free multilayer based color filter is realized using a proper series
connection of two cavities that shows relatively high efficiency, high color purity, and a wide …

We demonstrate a selectively emitting optical Fabry-Pérot resonator based on a few-nm-thin
continuous metallic titanium nitride film, separated by a dielectric spacer, which exhibits …

Hyperspectral imaging for agricultural applications provides a solution for non-destructive,
large-area crop monitoring. However, current products are bulky and expensive due to …

We present the first realisation of linear variable bandpass filters in nanoporous anodic
alumina (NAA-LVBPFs) photonic crystal structures. NAA gradient-index filters (NAA-GIFs) …

State-of-the-art pixels for high-resolution microdisplays utilize reflective surfaces on top of
electrical backplanes. Each pixel is a single fixed color and will usually only modulate the …

Flat optics for spatially resolved amplitude and phase modulation usually rely on 2D
patterning of layered structures with spatial thickness variation. For example, Fabry–Perot …

To meet the requirements for lightweight, miniaturized dispersive optical systems for space
applications, linear variable filters with a high transmittance and spatial dispersion …