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Light in tiny holes

机译:细孔中有光

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摘要

The presence of tiny holes in an opaque metal film, with sizes smaller than the wavelength of incident light, leads to a wide variety of unexpected optical properties such as strongly enhanced transmission of light through the holes and wavelength filtering. These intriguing effects are now known to be due to the interaction of the light with electronic resonances in the surface of the metal film, and they can be controlled by adjusting the size and geometry of the holes. This knowledge is opening up exciting new opportunities in applications ranging from subwavelength optics and optoelectronics to chemical sensing and biophysics.
机译:尺寸小于入射光波长的不透明金属膜中会存在微小的孔,这会导致各种意想不到的光学特性,例如大大增强了光通过孔的传输和波长过滤的能力。现在已知这些引人入胜的效果是由于光与金属膜表面中的电子共振的相互作用所致,并且可以通过调节孔的尺寸和几何形状来控制它们。这些知识为从亚波长光学和光电到化学传感和生物物理学的应用打开了令人兴奋的新机遇。

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