Silver sawtooth creates valley-coherent light for nanophotonics

Scientists at the University of Groningen used a silver sawtooth nanoslit array to produce valley-coherent photoluminescence in two-dimensional tungsten disulfide flakes at room temperature. Until now, this could only be ...

Simple materials offer a peek into the quantum realm

As reported in Nature Physics, a Berkeley Lab-led team of physicists and materials scientists was the first to unambiguously observe and document the unique optical phenomena that occur in certain types of synthetic materials ...

When semiconductors stick together, materials go quantum

A team of researchers led by the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a simple method that could turn ordinary semiconducting materials into quantum machines—superthin ...

Atomic nitrogen route to new 2-D semiconductors

A simple and non-destructive fabrication technique could aid the manufacture of more energy efficient two-dimensional (2-D) films needed to transform the electronics industry.

Fluorine flows in, makes material metal

By getting in the way, fluorine atoms help a two-dimensional material transform from a semiconductor to a metal in a way that could be highly useful for electronics and other applications.

Electron-hole pairs in two-dimensional crystals

When light of specific frequency hits a semiconductor crystal, it is absorbed and produces excitation, a state of higher energy. In solar cells, this energy is converted into electricity. In two-dimensional crystals, which ...

Researchers combine spintronics and nanophotonics in 2-D material

Spintronics is an emerging field in which the spin of electrons, rather than the charge, is used to process data. Unfortunately, the spin only lasts for a very short time, making it difficult to exploit in electronics. Researchers ...

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