Soon you could have access to secret information just by waving your hand, writes Sandrine Ceurstemont, editor, New Scientist TV. New digital signage allows you to decode invisible images by quickly moving your fingers in front of the screen.
Edinburgh start-up Visible Light Communications (VLC) is focussing on using flickering LEDs instead of WiFi for broadband communications, writes David Manners.
Scientists at Kyushu University in Japan have reported liquid-OLED in a recent issue of Applied Physics Letters.
Our Technology Editor, Steve Bush, got on the case to dig further into this work. Make sure you read the resulting article – Voltage tunes OLED across all sunlight hues.
Rensselaer designs power LED retaining efficiency at high current