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Tuesday, March 24, 2009

FTIR Goes Mobile

In my ongoing FTIR project I've come up with a new solution to a new problem. I've included a slideshow below - clicking on it enables the full screen and shows notes from flickr. What follows is a short description of the projects current status.
So, If I can't get a projector (I'm having a hard time buying one) I'll need to borrow one from my University - which means setting up at the university! I couldn't do that with a pipe table so I needed to fabricate a portable one. With the guidance of my father-in-law (who is an amazing engineer and builder) I was able to build this portable table.
One would be quick to notice that it has no way to block outside noise (background IR radiation), but I have a solution for that. The next upgrade on the table will be to add a flexible curtain line around the lower portion of the FTIR frame. This way I can attach a curtain that will minimize the interference of outside radiation. This should give the camera an unimpeded view of the acrylic surface.
I'm still worried about IR radiation from the projector itself. I'm hoping I can find a filter to reduce the IR radiation from the projector without impacting the overall visual aesthetic of the projection. I'm also planning on making a new compliant surface. I'm still using tinkerman's method - which I've linked to (on the nui forum group) below. The only difference between my method and his is I use mineral spirits while he uses Xylol.
Because of that I adjust my ratio - 3 parts Mineral spirits to one part Silicone. Below are some pictures of my father-in-law and me working on constructing this frame. We did this in the course of an afternoon with about $15 worth of material from Home Depot.

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