Hello Prosper,

You ask an interesting question. Generally, one would have a system and then try to determine what sensors would be needed to monitor and control it. Starting with a sensor and then trying to design a system to fit is not something I have tried to do before. But it is because we enjoy challenges that we become engineers.

I see from your profile that you are in the chemical and petroleum field. I recall reading a number of years ago about an interesting observation that was made concerning bioluminescence in crude oil. The sensor you describe could be used to determine the effect of various changes in environmental conditions on the level of light generated. That would be my first guess at what type of system would fit your sensor.

I have mentored many in my years and one thing that I tell them is that thinking outside the box still gives you the limitations of the box. Rather you should believe that there is no box. Let your imagination take you where ever it needs to go to find a solution to a problem. Then, once you have your solution you can work to fit it into the box. My point here is that you have an open question. You don't need to fit your solution into a specific system so your answer will only be limited by your imagination, your willingness to consider the possibilities, and of course the willingness of your Lab Head to let you wander.

Good luck my friend and enjoy the journey,

Paul

Could be use to measure air refractivity but it's hardly novel.

(@Paul Burchart) by novelty I meant something new I can use the data from those sensors to study that will be new or contribute to existing ideas

In addition to the bioluminescence suggestion I made, you could look at the impact of varying environmental conditions on . My point is that you have far more knowledge about your study areas than I or anyone else may have. You would also be in a much better position to determine what might be considered novel. You need to use that knowledge, flex your boundaries, and amaze the world. Sorry we can't hand you a topic that would lead you to a Nobel Prize but even if we could it would be a hollow award because you didn't think of it yourself. I don't mean to sound sarcastic. Rather, I'm trying to be helpful.