Eighty years ago, Penn researchers J. Presper Eckert and John Mauchly launched the age of electronic computing by harnessing ...

For nearly 80 years, modern computing has depended on electrons rushing through circuits. This ...

Single layers of transition metal dichalcogenides are two-dimensional (2D) direct-bandgap semiconductors with degenerate, but inequivalent, ‘valleys’ in the electronic structure that can be ...

Bose-Einstein condensation (BEC) is normally limited to temperatures near absolute zero but researchers have now seen it at a much warmer 100 Kelvin for excitons (electron-hole pairs) in atomically ...

Photovoltaics, the conversion of light to electricity, is a key technology for sustainable energy. Since the days of Max Planck and Albert Einstein, we know that light as well as electricity are ...

Last year, researchers at the École polytechnique fédérale de Lausanne (EPFL) in Switzerland developed a new type of transistor — one based on excitons, a special type of quasiparticle — which could ...

An ultra-short flash of light breaks the bond between the electron (red) and the hole (blue), enabling research on charge-transfer processes in atomically thin semiconductors. Credit: Lukas Kroll, Jan ...

If you read the scientific literature, you see the familiar subatomic particles you learned about in school: protons, neutrons, and electrons. If you are young enough, you see others you probably ...

Physicists develop new systems to trap individual excitons, - bound pairs of electrons and their associated positive charges. Credit: Xiaodong Xu For the first announcement of “magic-angle” bilayer ...

Coulombic attraction between a negatively charged electron and a positively charged hole form excitons. The photoexcitation in semiconductors exhibits a spectrally narrow linewidth resulting in ...

Things can always be done faster, but can anything beat light? Computing with light instead of electricity is seen as a breakthrough to boost the computer speeds. Transistors, the building blocks of ...