New Scientist has news that we're just that much closer to Star Trek-like detection systems:

Micro-gyroscopes comprise a chip with a vibrating disc the size of a sand grain mounted at its centre. The vibrations are highly sensitive to acceleration, so the chips can be used to detect motion in rockets, aircraft and anti-lock braking systems in cars.

But now Calum McNeil and his colleagues at the University of Newcastle in the UK have created a gyroscopic disc less than 0.1 millimetres across that can be used to "weigh" proteins, which allows it to identify particular proteins produced by cancer cells. The disc targets the kind of protein that binds to a DNA coating on a cross on the disc's surface.

Every time I think, "what will they think of next?", they go and do so, and it's never what I expect. Ain't markets grand?