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Chemical removal of Bayer filters from sensor

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#1 enricosavazzi

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Posted 12 May 2019 - 05:10

I don't know whether it has been reported earlier, but the following paper briefly describes a relatively simple method for chemically removing the Bayer filters from a CMOS sensor:

https://www.ncbi.nlm...rs-16-01649.pdf
-- Enrico Savazzi

#2 Alaun

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Posted 12 May 2019 - 10:31

Interesting. They did not stay idle, but built a cheap UV-spectrometer as well:

https://www.osapubli...seq=0&mobile=no
Werner

#3 enricosavazzi

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Posted 12 May 2019 - 10:42

View PostAlaun, on 12 May 2019 - 10:31, said:

Interesting. They did not stay idle, but built a cheap UV-spectrometer as well:

https://www.osapubli...seq=0&mobile=no
The link does not work for me. Perhaps behind a paywall?
-- Enrico Savazzi

#4 Alaun

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Posted 12 May 2019 - 10:55

No paywall. Works here with safari and firefox

Title and authors:


"Low-cost 3D printed 1 nm resolution smartphonesensor-based spectrometer: instrument designand application in ultraviolet spectroscopy", THOMASC. WILKES,,ANDREW J. S. MCGONIGLE, JON R. WILLMOTT, TOM D. PERING AND JOSEPH M. COOK; in Optic Letters, Vol 42, No 21, November 1 2017

Edited by Alaun, 12 May 2019 - 11:07.

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#5 bobfriedman

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Posted 12 May 2019 - 12:06

I can't open the link either.. Used Safari.

#6 dabateman

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Posted 12 May 2019 - 12:30

The link may be copied wrong. Try this one:

https://www.osapubli...i=ol-42-21-4323


Aluan, do you have an Apple phone. That could be the issue.

Edited by dabateman, 12 May 2019 - 12:32.


#7 Alaun

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Posted 12 May 2019 - 12:34

Ahh, now I get problems as well. Probably some kind of cookies, Iinked direct to the pdf.

David's link works. From there you can downlaod the pdf.
Werner

#8 dabateman

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Posted 12 May 2019 - 12:47

They are boiling the sensor in EKC830, at 70 to 100C. The MSDS, says the flashpoint is 100C and is an inhalation risk. So if you do plan to do this and you don't have a chemical safety hood, you should do this only outside and have a fire extinguisher nearby.
The rinses are also fun with concentrated Acetone and isopropyl alcohol. Best to do that outside as well.
I think the sticky tape method still may be best.
Basically, heat up your sensor with a hot gun, like a paint stripping gun. Then use 3m tartan clear tape to pull off the CFA. This wirks well on Canon cameras, but has worked for others. I found this on Cloudy Nights.

https://www.cloudyni...y-20d-thoughts/

#9 JMC

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Posted 12 May 2019 - 13:07

Thanks for the link Enrico.