Methane Gas Detection

I want to simulate and design a methane detector Gad using the method of optical photonic crystals.

Gases absorb light at different wavelengths so that you can view the spectrum of light passing through the sample, but I do not think that your sensor is good enough to buy a good detector like the one used in the coal mining industry is a possibility, they are called canaries but the match works for me

Try a lit match. If methane exists and as long as the rest of the atmosphere is not inert, you'll see without optical aid ....

On the other hand, you could enjoy the light refracting through the gas deinsity different?

When light passes from one medium to another its path is bent slightly (which is why lenses work) in your case, you want to detect the difference in this shift between the normal air and methane. Record the temperature of the gas will also change the curvature of the path of light.

I think you can try to complicate your method. gas detection can be made from powdered crystals and an indicator and there is a little on the market already. Your optical method would be to use a single UV / Vis / NIR spectrophotomotre, I think Thermo, Shimadzu HP and them.

You can watch it while holding the photonic crystal in one hand and the match lite in the other