Chirality is a fundamental property of matter that determines many biological, chemical and physical phenomena. Chiral solids, for example, offer exciting opportunities for catalysis, sensing and ...

Conventionally, active metasurface scientists have mainly concentrated on altering the dielectric constant and permeability of the substrate, which usually leads to resonance effect and ohmic loss.

In analogy to the amplification of light in a laser, vibrations of a semiconductor crystal, so called phonons, were enhanced by interaction with an electron current. Excitation of a ...

The properties of a GaSe crystal allow researchers to build a compact terahertz source with a tuning range in excess of 5 THz. Researchers in the US claim to have built a compact source of widely ...

Terahertz photonic crystal fiber sensors, powered by machine learning, could transform tuberculosis detection with rapid and ...

Researchers build a terahertz radiation source based on a GaP crystal that has a tuning range of 2.5 THz. Scientists in Japan have used difference-frequency generation (DFG) to produce tunable, high ...

Terahertz light has the ability to control solids at the atomic level, forming chiral structures of left- and right-handedness. Chirality refers to objects that cannot be superimposed to their mirror ...

In analogy to the amplification of light in a laser, vibrations of a semiconductor crystal, so called phonons, were enhanced by interaction with an electron current. Excitation of a ...