Hi Everyone, Below is a short NPR interview I did describing the Nobel prize-winning work that was announced today, giving a touch more context. Check it out if you have a couple of minutes. One point that has been asked a number of times today: What is it about the color BLUE that was particularly challenging? Well, blue light is at the more energetic end of the visible spectrum, so you need a material that allows electrons to jump across a relatively wide energy gap. (Electrons relinquish energy in such transitions, which generates photons--particles of light.) It was known that Gallium nitride should do the trick, but growing sufficiently large crystals to accomplish the job was tough. Thats where the three new Nobel laureates succeeded, whereas others got hung up. --BG
Posted on: Wed, 08 Oct 2014 00:21:53 +0000
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