Schematic of a portion of a 2D hierarchical phoxonic crystal with both large scale photonic lattice and a smaller scale phononic lattice inside a cavity resonator in the larger scale lattice. (Image: ...

Photorefractive crystals are a class of materials that exhibit a change in their refractive index when exposed to light. This phenomenon, known as the photorefractive effect, occurs due to the ...

In a surprising twist, researchers have identified crystals that are symmetrical but nevertheless absorb light as if they were chiral (Science 2025, DOI: 10.1126/science.adr5478). The discovery ...

Just when scientists thought they knew everything about crystals, a Northwestern University and University of Wisconsin-Madison collaboration has uncovered a hidden secret. Centrosymmetric crystals ...

Optical microscope image of a representative crystal that possesses centrosymmetry, yet shows differential absorption of circularly polarized light. The crystal is made of lithium, cobalt, selenium ...

Researchers have developed a blueprint for weaving hopfions—complex, knot-like light structures—into repeating spacetime crystals. By exploiting two-color beams, they can generate ordered chains and ...

Chemistry students at the University of Cincinnati are exploring lab-grown crystals that do extraordinary things when exposed to light. They bend. They twist. They bounce. And sometimes they explode.

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2024 has been a big year for VR, with new headsets from Apple, Meta, HTC Vive, and Pimax. The latest from Pimax is the Crystal Light, an inexpensive version of the impressive Pimax Crystal I reviewed ...