A variety of artificial molecular switches and machines have been reported that are based on the relative motion of the constituent components of mechanically interlocked molecules (MIMs) 1,2,3,4,5.

Google just announced the release of SketchUp 7. SketchUp is a 3D modeling program with a fairly robust free version. They’ve added quite a few features and the one that caught our eye in particular ...

This dynamic compressor with passive components reduces high signal to a lower, more constant signal. If you look at this compressor schematic, you’ll notice it has no power supply, the required power ...