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微观艳遇、印象西湖 |
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| 微观: 视觉和知觉的艳遇 (from PRL focus, etc.) | ||||
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Twisted view of spin, PRL: A current of electrons with aligned spins should cause a nanoscale beam to twist. The device could be used to measure spin currents, an essential piece of many proposed "spintronics" devices |
Miniature vise. PRL: Researchers could control an enzyme molecule's effectiveness by attaching a strand of DNA and then changing its stiffness with other molecules in the solution.
Nano-spring:
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You go that way, PRL: With some quantum trickery, laser light makes spin-up electrons (green) flow one way and spin- down electrons (red) flow the other inside a semiconductor. The opposing flows produce a pure spin current without an electrical current. |
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Spiraling under control. PRL: Light beams with orbital angular momen- tum have spiral-shaped wave fronts, rather than flat planes. A new device transforms conventional photon spin into this form of angular momentum. | |||
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Pulsating Pulses, PRL: Researchers demonstrated a simple technique for controlling very intense light pulses. A related strategy might work for ultracold gases. |
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宏观：印象西湖 (from various sources) |
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copyright © 2001, 浙江大学关联与介观物理研究团队版权所有(复制必究)；页面设计YQ Li, last updated Sept. 2008