Click here for DISCOVER Magazine's article on Roger Penrose and his alternate Interpretation (as opposed to Copenhagen and Many-Worlds) of Quantum Mechanics, and detail regarding the Dust-particle Tabletop Experiment he proposes to prove he is correct, as well as current work on same.
The article is also currently on the newsstands/bookstores (through late March 2010) in DISCOVER Magazine's "Extreme Universe" special issue.
There are actually people trying to make that happen. They claim they need 5 years given the engineering challenges. The article was written in 2005. It is now 2010, so .....
Well? Where are we?
I can help, because I'm aware of the challenges (making the apparatus as vibration-free as possible, with constant temperature in a wind-free environment). I've worked on a Mach-Zehnder Interferometer with the necessary lasers, mirrors, beam-splitters, concrete floor, balloon tires, in a quiet, dark air-tight lab in a high-vacuum environment, etc.
I'd like to put my Mechanical Engineering knowledge AND experience to good use. If anyone knows who is currently doing these tests, please forward this webpage to them. Thanks in advance.