Post subject: changhong h2 phone with build in NIR spectroscope
Posted: Wed Jun 14, 2017 1:02 am
Active Member
Joined: Sat Feb 23, 2008 8:18 am Posts: 71
433 USD will buy you the changhong H2 new phone with a build in NIR spectroscope its nice to see instruments like this one getting much smaller and cheaper.
NIR spectroscopy is widely used to determine material composition, as the band mesured in NIR are "overtones" of the FTIR bands. Usually, the NIR wavelength range is about 700 - 2500 nm. SCIO uses only a small fraction of it, therefore the discriminatory power is limited, in comparison to a "real" NIR spectrometer. In contrast, the TellSpec minature spectrometer has a double wavelength range (900 - 1700 nm) and might be better suited... http://tellspec.com/
Speaking about NIR databases: there is already a free database with NIR reflectance data from rocks &minerals from USGS, with almost 900 entries. Recently, I compiled a database from this data set for use with my Spectragryph software: http://www.effemm2.de/spectragryph/down_databases.html
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