I have a liquid that glows when UV light is shined. However, when I use my phone camera I can't see the glow, I just see a violet hue. What is the best way of capturing the fluorescence-glow from our samples? DO I need to use a filter for my camera?
If your liquid sample emitted visible light, you could use a UV filter in front of your camera to catch up the light images. Why not use a CCD spectrophotometer to catch up an image as well as a spectrum?
it depends on the sensitivity of the camera with respect to the different wavelengths. I expect that a mobile phone camera is a standard Si detector, hence the sensitivity at low wavelengths is very poor. For sure the use of some filters can help you to obtain better resuts, but first of all you need to know the spectrum of the emitted fluorescence (in principle you can know it if you know the dyes in your system).
If the glow is visible to the naked eye, then it is >400nm. I don't think you need any filters to capture it.
Try photographing in the dark, but with no flash on.
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