Apparently a layer of q-dots on the sensor in a digital camera can boost the proportion of light the sensor captures from 25% CMOS sensors currently get to 95%. That means you DSLR-quality images with much smaller sensors, and therefor much smaller cameras.
I got that from today's GeekBrief (the quantum dot segment is about half way through):
Totally unrelated, but since I'm posting video podcasts, Monday's Rocketboom was pretty cool:
[Sorry, there was something wonky going on with the video embed there so I removed it. You should still be able to watch at the link above.]
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