Optical absorbers find uses in a wide array of applications across the electromagnetic
spectrum, including photovoltaic and photochemical cells, photodetectors, optical filters …

We experimentally demonstrate that a thin (approximately 150-nm) film of vanadium dioxide
(VO 2) deposited on sapphire has an anomalous thermal emittance profile when heated …

Efficient suppression of reflection is a key requirement for perfect absorption of light.
Recently, it has been shown that reflection can be effectively suppressed utilizing a single …

Plasmonic and metamaterial based nano/micro-structured materials enable spectrally
selective resonant absorption, where the resonant bandwidth and absorption intensity can …

Using two most abundant materials in nature: silicon and aluminum, spectral selective
perfect light absorption in single layer silicon films on aluminum surface is demonstrated …

We show that a triple-layer metal-insulator-metal (MIM) structure has spectrally selective IR
absorption, while an ultra-thin metal film has non-selective absorption in the near infrared …

Methods for spectrally controlling light absorption in optoelectronic devices have attracted
considerable attention in recent years. It is now well known that a Fabry-Perot nanocavity …

Optical vortices (OVs) have rapidly varying spatial phase and optical energy that circulates
around points or lines of zero optical intensity. Manipulation of OVs offers innovative …

High-contrast gratings (HCGs) can be designed as a resonator with high-quality factor and
surface-normal emission, which are excellent characters for designing optical devices. In …

Superabsorbers based on metasurfaces have recently enabled the control of light at the
nanoscale in unprecedented ways. Nevertheless, the sub‐wavelength features needed to …