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They made a tiny, gold-plated seesaw and slowly lowered a gold-plated ball towards it. At a distance of about 300 nanometres (a nanometre is a billionth of a metre), the seesaw began to tilt towards the ball.
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Could this not be attributed to a gravitational effect? This quantum mechanics stuff makes my head hurt.
As for superconductors, they are working on some stuff here called high temperature superconductors that are not copper based (unusual) and retain their superconducting capabilities at what are almost considered "warm" temperatures. Alot of nanoscale stuff going on these days.