I'm a Ph.D. student in the lab working on this at UCSD. My work is principally on other chemical sensor projects that also take advantage of porous silicon, but if you're interested in checking out some videos of a few prototypes of non-imaging sensors I've made along the way check out: http://www.youtube.com/chemicalsensors#p/u/0/ut00Ifg6rrk
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I'm a Ph.D. student in the lab working on this at UCSD. My work is principally on other chemical sensor projects that also take advantage of porous silicon, but if you're interested in checking out some videos of a few prototypes of non-imaging sensors I've made along the way check out: http://www.youtube.com/chemicalsensors#p/u/0/ut00Ifg6rrk
-Brian