Bendy 'plasmon' beams focus better than light alone: ...until now, rigid gratings have been needed to direct and steer plasmons to a given point so that they could image something there.
Peng Zhang at the University of California, Berkeley, and colleagues can now bend beams of plasmons to their whim. They sent laser light through a screen on which a pattern was displayed. This pattern split the light into beams that interfered with each other to create what appeared to be a single beam that arced through space.
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