Negative refraction makes a perfect lens
Negative refraction makes a perfect lens
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DOI：
10.1103/physrevlett.85.3966
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发表时间：
2000-10-30
影响因子：
8.6
通讯作者：
Pendry, JB
中科院分区：
文献类型：
--
作者：
Pendry, JB
用传统的镜头，图像的清晰度总是受到光的波长的限制。一种非传统的透镜替代品，一种负折射率材料的平板，具有聚焦2D图像的所有傅立叶分量的能力，甚至那些不以辐射方式传播的分量。以目前的技术，这种“超级透镜”可以在微波波段实现。我们的模拟表明，一个版本的镜头工作在可见光的频率可以实现在一个薄的银板的形式。这种光学版本只能分辨出几纳米宽的物体。
With a conventional lens sharpness of the image is always limited by the wavelength of light. An unconventional alternative to a lens, a slab of negative refractive index material, has the power to focus all Fourier components of a 2D image, even those that do not propagate in a radiative manner. Such "superlenses" can be realized in the microwave band with current technology. Our simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver. This optical version resolves objects only a few nanometers across.