A display that completely blocks off counterfeits

Researchers develop nanostructures capable of polarized optical encryption.

Researchers develop new graphene nanochannel water filters

Tiny channels between graphene sheets can be aligned in a way that makes them ideal for water filtration.

First-ever atomic resolution video of salt crystals forming in real time

Two novel techniques, atomic-resolution real-time video and conical carbon nanotube confinement, allow researchers to view never-before-seen details about crystal formation.

Fighting respiratory virus outbreaks through 'nano-popcorn' sensor-based rapid detection

Researchers develop novel sensor for the improved detection of influenza A viruses, with high reproducibility.

A critical review of graphene quantum dots and their application in biosensors

Researchers discuss the top-down and bottom-up strategies for the synthesis of graphene quantum dots. The respective advantages and disadvantages of these methods are summarized.

Electrons caught in the act

Scientists combine scanning tunneling microscopy with ultrafast spectroscopy to image the motion of electrons with unprecedented resolution, which may lead to advances in semiconductors and optoelectronics.