Researchers have discovered in two-dimensional conductive systems a new effect that promises improved performance of terahertz detectors.
Optics & Photonics
May 23, 2022
0
5035
What is light made of: waves or particles? This basic question has fascinated physicists since the early days of science. Quantum mechanics predicts that photons, particles of light, are both particles and waves simultaneously. ...
Quantum Physics
Nov 1, 2012
284
0
Scientific research is based on the relationship between the reality of nature, as it is observed, and a representation of this reality, formulated by a theory in mathematical language. If all the consequences of the theory ...
Astronomy
May 26, 2020
21
601
(PhysOrg.com) -- At very cold temperatures, in the absence of light, a photomultiplier will spontaneously emit single electrons. The phenomenon, which is called "cryogenic electron emission," was first observed nearly 50 ...
The creation of photoelectrons through ionisation is one of the most fundamental processes in the interaction between light and matter. Yet, deep questions remain about just how photons transfer their linear momentum to electrons. ...
General Physics
Dec 5, 2019
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3202
When light hits a material, electrons can be released from this material—the photoelectric effect. Although this effect played a major role in the development of the quantum theory, it still holds a number of secrets: To ...
Quantum Physics
Feb 10, 2022
312
1010
Albert Einstein, best known for his work in relativity, won the Nobel Prize for his formula for the photoelectric effect, which often surprises modern physicists. He's not the only physicist whose Nobel award misaligns with ...
Quantum Physics
Nov 8, 2023
1
89
In the photoelectric effect, a photon ejects an electron from a material. Researchers at ETH have now used attosecond laser pulses to measure the time evolution of this effect in molecules. From their results they can deduce ...
Optics & Photonics
Jun 22, 2018
1
917
The discovery that free electrons can move asymmetrically provides a deeper understanding of one of the basic processes in physics: the photoelectric effect. It was first described by Albert Einstein and explains how high ...
Optics & Photonics
Oct 1, 2019
0
1139
(Phys.org) —A small team of researchers at Bell Labs in New Jersey has built a camera that has no lens. Instead, as they explain in their paper they've uploaded to the preprint server arXiv, the camera uses a LCD array, ...
