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永利集团网址:Flexible beamers

点击量:   时间:2019-03-06 04:20:01

By Duncan Graham-Rowe BUILDING plastic lasers may soon be possible, say researchers at Bell Labs in New Jersey. A team there has just made the world’s first organic laser using tetracene, a substance whose molecules closely mimic those of polymers in the way they handle electricity and light. The tetracene molecule contains four benzene rings. When a current is made to flow through this molecule, light is emitted. And the photons bounce back and forth between the reflective walls of the tetracene crystal,