o2_sensor
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Table of Contents
Notes
- The oxygen quenching is predicted by the Stern-Volmer equation, and changes in intensity or lifetime of the fluorescence can be monitored
390nm LED
Shortpass Filter / UV 400nm
Fluorescent Target
- 9,10-Diphenylanthracene
- 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
- excitation peak at 450 nm and an emission peak at 530 nm
PDMS polymer binder
- Sylgard 184
- Sylcap 284 is available with smaller MOQ and has similar gas permeability but cures faster
400nm longpass filter
Optical Sensor
- Silicon photodiode covering as much UV as possible, make sure 420nm is in spectra
pH
- Pyranine Solvent Green 7 CAS 6358-69-6 aka HPTS aka Pyranine
- Tetraethyl orthosilicate (TEOS) or methyltriethoxysilane (MTES)
o2_sensor.1737021735.txt.gz · Last modified: 2025/01/16 10:02 by kenson