Nice concept and execution. The only change I would have made was to orient it such that the 3.14 was at the top of the ring, where the current numbers are upside down. Although then you would have to flip it so it was right side up. My spatial thinking skills aren't that great so maybe that isn't even possible!
What is so special about writing Pi in base 10? Pi to me is nice and perfect as it is, but gets ugly and un-natural when written as a long row of numbers. Even if your single-sided loop was a nice idea.
An interesting reference to Pi in this photo is out-pf-focus bubbles and the bokeh circles in the background, so I'll give you a five for that part.
Creative idea -- the mobius strip represting the infinty of pi. I like the idea of the background, but the stripes through the bokeh and general dustyness of the image distract a little from it. Great concept, though.
OK. You got me - I love mobius strips. Nice lighting. Not sure what is in the background, but at least it is blurred so it does not compete for main subject.