Near a semireflective surface, the particle experiences counterbalancing forces that effectively hold it in place. By shifting the aim of the laser beam, the hovering particle can be moved over the surface. Video courtesy APS/V. G. Shvedov et al.
Deadline: Jul 30 2013
Reward: $100,000 USD
The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
Deadline: Jun 29 2013
Reward: $7,000 USD
The Seeker for this Challenge desires proposals for chemical methods that could rapidly degrade a dilute aqueous solution
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