The proliferation of Internet-of-Things has promoted a wide variety of emerging applications
that require compact, lightweight, and low-cost optical spectrometers. While substantial …

A new type of spectrometer that heavily relies on computational technique to recover
spectral information is introduced. They are different from conventional optical spectrometers …

Spectrometers with ever-smaller footprints are sought after for a wide range of applications
in which minimized size and weight are paramount, including emerging in situ …

Metasurfaces have an exceptional capacity to manipulate the phase, amplitude,
polarization, or spectrum of light. However, unit cells, or meta‐atoms, of metasurfaces are …

Hyperspectral (HS) imaging provides rich spatial and spectral information and extends
image inspection beyond human perception. Existing approaches, however, suffer from …

Spectral sensing is increasingly used in applications ranging from industrial process
monitoring to agriculture. Sensing is usually performed by measuring reflected or transmitted …

Miniaturized spectrometers have significant potential for portable applications such as
consumer electronics, health care, and manufacturing. These applications demand low cost …

Spectroscopy is carried out in almost every field of science, whenever light interacts with
matter. Although sophisticated instruments with impressive performance characteristics are …

Spectral imaging paves the way for various fields, particularly in biomedical research.
However, spectral imaging, mainly depending on spatial or temporal scanning, cannot …

Graphene, a semi-metal with a gapless band structure, has been used in mid-infrared (MIR)
photodetectors (PDs) for some time. However, these detectors often suffer from low …