Science | WPN World People News

To the growing list of two-dimensional semiconductors, such as graphene, boron nitride, and molybdenum disulfide, whose unique electronic properties make them potential successors to silicon in future devices, you can now add hybrid organic-inorganic perovskites. However, unlike the other contenders, which are covalent semiconductors, these 2D hybrid perovskites are ionic materials, which gives them special properties of their own.

Nowadays, the creation of nuclear wastes and radioactive contaminants is inevitable due to the significant progresses in nuclear industry and its application in various industries and medical and agricultural issues. It is necessary to store or expulse radioactive wastes according to specific regulations due to the unique properties of radioactive materials.

Researchers at the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) have successfully grown atomically thin 2D sheets of organic-inorganic hybrid perovskites from solution. The ultrathin sheets are of high quality, large in area, and square-shaped. They also exhibited efficient photoluminescence, color-tunability, and a unique structural relaxation not found in covalent semiconductor sheets.

Before April 24, 1990, seeing photos of space from space was not an option. Since then however, as spectators we’ve seen some photos that are nearly unimaginable. Why is that date so special? It was the date the Hubble Space Telescope was launched into space, making it a bit more than 25 years old.

Large-scale crossbedding in the sandstone of this ridge on a lower slope of Mars' Mount Sharp is typical of windblown sand dunes that have petrified.

This simulation helps explain an odd light signal thought to be coming from a close-knit pair of merging black holes, PG 1302-102, located 3.5 billion light-years away.

Researchers have tried to synthesize and study new nanostructured absorbing layers made of cheap and available elements with desirable physical properties because indium and gallium are very rare and expensive.

Working with brick-like blocks of gold nanoantennas, the Berkeley researchers fashioned a "skin cloak" barely 80 nanometers in thickness, that was wrapped around a three-dimensional object about the size of a few biological cells and arbitrarily shaped with multiple bumps and dents. The surface of the skin cloak was meta-engineered to reroute reflected light waves so that the object was rendered invisible to optical detection when the cloak is activated.