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o2_sensor

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390nm LED
Shortpass Filter / UV 400nm
Fluorescent Target
PDMS polymer binder
400nm longpass filter
Optical Sensor

390nm LED

https://www.digikey.com/en/products/detail/bivar-inc/UV3TZ-390-15/3095671

Shortpass Filter / UV 400nm

https://www.asahi-spectra.com/opticalfilters/detail.asp?key=XHS0400

Fluorescent Target

9,10-Diphenylanthracene
- https://www.ebay.com/itm/256126158171 2.5G/$42
- https://www.alibaba.com/product-detail/9-10-Diphenylanthracene-CAS1499-10-1_1601304899154.html
- ocr60.pdf Whitepaper describing use of 9,10-Diphenylanthracene for oxygen detection

Absorption Peaks: 270nm, 354nm, 373nm, 393nm

Fluorescence Emission Peaks: 404nm, 425m

rubrene (5,6,11,12-tetraphenylnaphthacene) is what's probably in the real sensor
- https://www.alibaba.com/product-detail/OEM-factory-OLED-materials-CAS-517-1600157189956.html
- https://www.sigmaaldrich.com/US/en/product/aldrich/554073

PDMS polymer binder

https://ocw.mit.edu/courses/hst-410j-projects-in-microscale-engineering-for-the-life-sciences-spring-2007/a8ccf98b4a870a05112f4143c5146c0a_manuf_pdms.pdf
Sylgard 184
- https://www.amazon.com/dp/B0DHVM8ZGD
Sylcap 284 is available with smaller MOQ and has similar gas permeability but cures faster
- https://www.amazon.com/MICROLUBROL-SYLCAP-Elastomer-Encapsulant-Transparent/dp/B074Z1MV3V

400nm longpass filter

https://www.asahi-spectra.com/opticalfilters/detail.asp?key=XUL0400

Optical Sensor

Silicon photodiode covering as much UV as possible, make sure 420nm is in spectra
https://www.digikey.com/en/products/detail/vishay-semiconductor-opto-division/BPW21R/1681147?gQT=1

o2_sensor.1737002886.txt.gz · Last modified: 2025/01/16 04:48 by kenson