A surprising discovery about spin-electron interactions in a specialized semiconductor material - a 'sandwich' of layers with different properties, buffered by a graphene nanoribbon - could potentially offer major advantages in speed, heat dissipation and power consumption in electronic devices.
Scientists have succeeded in growing nanocrystals of gallium arsenide on tiny columns of silicon and germanium. This enables extremely efficient optoelectronic components for important frequency ranges to be realised on silicon chips.
The new method uses a unique polymer coating that contains nanoscale gold particles, in addition to the drug itself. The drug only releases when a light shines on the gold particles, causing the polymeric coating to melt.
Researchers studying whether concrete is made stronger by infusing it with nanocrystals from wood are moving from the laboratory to the real world with a bridge that will be built in California this spring.
A new metasurface for infrared light is based on boron nitride, a graphene-like 2D material, and was selected because of its capability to manipulate infrared light on extremely small length scales, which could be applied for the development of miniaturized chemical sensors or for heat management in nanoscale optoelectronic devices.