Diodes Could Drive Swimming Micro-Robots

finisterre writes "Diodes can be made to 'swim' through salt water by hitting them with an alternating electric field. The applied field induces a current that sets up a field between the diode's electrical contacts and creates a propulsive force. The abstract of the paper in Nature Materials is freely available. New Scientist has videos of the swimming diodes in action."

Comments

Re:Reading this before properly waking up...

[MightyYar]

You need to re-read that article. It simply states that coffee drinkers are no more alert than non-coffee drinkers; it does not say that regular coffee drinkers are just as alert before and after their first cup of coffee. In fact, it explains why regular coffee drinkers need the morning cup to come back up to a baseline of normal alertness.