During the past few years, metasurfaces have been used to demonstrate optical elements
and systems with capabilities that surpass those of conventional diffractive optics. Here, we …

All‐dielectric metamaterials with low loss are a rapidly develo** research hotspot in the
field of metamaterials, and offer additional design freedom for electromagnetic devices …

The three primary colour model, ie, red, green, and blue model, based on the colour
perception of the human eye, has been widely used in colour imaging. The most common …

Varifocal lenses, conventionally implemented by changing the axial distance between
multiple optical elements, have a wide range of applications in imaging and optical beam …

Structural colors traditionally refer to colors arising from the interaction of light with structures
with periodicities on the order of the wavelength. Recently, the definition has been …

The quantum dot spectrometer, fabricated by integrating different quantum dots with an
image sensor to reconstruct the target spectrum from spectral-coupled measurements, is an …

Structural colors traditionally refer to colors arising from the interaction of light with structures
with periodicities on the order of the wavelength. Recently, the definition has been …

Measuring, recording and analyzing spectral information of materials as its unique finger
print using a ubiquitous smartphone has been desired by scientists and consumers. We …

Computational hyperspectral devices that use artificial filters have shown promise as
compact spectral devices. However, the current designs are restricted by limited types and …

Optical metasurfaces, composed of ultrathin subwavelength meta-atoms, have enabled flat-
optics and corresponding flat optical components such as ultrathin lenses, color filters, and …