Physicists have created the tiniest light-emitting diode (LED) displays ever 1. The image above was shown on a monochromatic display with pixels less than 100 micrometres across, about the width ...

The HP LaserJet M209d is a sterling value among low-cost, print-only mono laser printers. (If you're considering an inkjet but print only occasionally, it's a tempting alternative.) Its paper ...

Laser diodes are semiconductors that generate light ... scientists have uncovered previously-unknown aspects of the metal's structure and behavior.

diode laser structures must also incorporate a means of injecting an electrical current into the active region. This often involves extra semiconductor layers and metal contacts.

State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Wushan Road 381, Guangzhou 510640, China Guangdong Basic Research Center of Excellence for Energy and ...