A research team reports a possible solution to the environmental instability of perovskite - an alternative to silicon that's cheap and highly efficient, yet degrades dramatically when exposed to moisture.
It is an intuitive rule of thumb: if you reduce the density of a material, its stiffness will also be reduced. But scientists noticed that materials that are based on sandwich nanotubes retained their stiffness at lower densities.
The discovery demonstrates a practical method to overcome current challenges in the manufacture of indium gallium nitride LEDs with considerably higher indium concentration, through the formation of quantum dots that emit long-wavelength light.
Researchers have created a short-wave infrared light screen consisting of just eight thin layers on a glass surface. This could make IR cameras useful everyday objects.
Chemists created a nanofilter for water purification from synthetic dyes. The graphene-based composite can quickly remove up to 100% of harmful compounds from water, and it can be used up to seven times without losing efficiency.
