Understanding high efficiency of deep ultraviolet LEDs

Deep ultraviolet light-emitting diodes (DUV-LEDs) made from aluminium gallium nitride (AlGaN) efficiently transfer electrical energy to optical energy due to the growth of one of its bottom layers in a step-like fashion. ...

X-ray photoelectron spectroscopy of hydrogen and helium

For the first time scientists measured the vibrational structure of hydrogen and helium atoms by X-rays. The results disprove the misconception that it's impossible to obtain X-ray photoelectron spectroscopy (XPS) spectra ...

Fiber sensors may leave the jacket on

Optical fibers enable the internet, and they are practically everywhere: underground and beneath the oceans. Fibers can do more than just carry information: they are also fantastic sensors. Hair-thin optical fibers support ...

Increasing the effectivity of condensation through electrowetting

Researchers of the department of Physics of Complex Fluids of the University of Twente's MESA+ institute have succeeded in increasing the effectivity of condensation through gravity-driven electrowetting. "We have been able ...

First study of terahertz radiation in liquids

A research team from ITMO University and the University of Rochester (U.S.) conducted a study on the formation of terahertz radiation in liquids. Previously, the generation of such radiation in a liquid medium was considered ...

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