How to design something like this? I am very eager to know what technology might been used to implement this piece of wonder:



Any idea?

I think, it's ray tracing. What do you think?
It does look like raytracing to me as well.  It could also possibly be ray marching, which would be easier to make the tubes with since ray marching is all based on distances from things (center of tube in this case).

Refraction is what's used to bend the light that goes through the tubes.

You are then just left with how to model the tubes. One way could be to use 3d bezier curves (: 

This may not have been made in real time, but may have been rendered frame by frame and then assembled into the smooth "movie" you are showing.