Thought for the month

“You cannot have freedom without a rule of law ... and if you don't have it, what you tend to get is corruption and that is death to freedom, it's death to truth, it's death to honour, it's death to democracy.”

Margaret Thatcher, 1 October 1996.

Tuesday, 12 June 2012

Killer LEDs

We are familiar with the ever increasing use of LEDs in display and lighting applications. Recent work by a group at North Carolina State University on carbon reductions within the AlN substrates within AlN/AlGaN LEDs showed a reduction in UV absorption. The work aims to develop energy-efficient LED devices that use ultraviolet light to kill pathogens such as bacteria and viruses, with uses ranging from drinking-water treatment to sterilizing surgical tools. Commercial applications incorporating this technology are being developed via an NC State spin-off company Hexa Tech, Inc.

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