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Posted: 5/1/2015 9:35:57 PM EDT
Article

Spinel is a metallic mineral that is formed into a crystal that is clear. The article indicates that by weight, it's more than twice as bullet resistant as the current bullet-proof glass technology and when a bullet impacts the cracks don't propagate like they do in glass. Interesting for sure, but the part that caught my eye was that the article states it could be used for IR viewing devices. I didn't see anywhere there was a direct quote of the researchers stating this so I'm skeptical.

That being said, why is it we have to use germanium? Is it possible that there are other things out there that would work and we just haven't developed the technology? Could this "spinel" crystal really take the place of germanium in Infrared viewing devices?
Link Posted: 5/2/2015 12:22:00 AM EDT
[#1]
Was not mentioned if it worked for LWIR or SWIR, glass works for SWIR. Most detectors for commercial thermal devices use LWIR which will not pass thru glass.
After some google searches, it appears to be good for MWIR not LWIR.
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