Issue |
Europhys. Lett.
Volume 69, Number 4, February 2005
|
|
---|---|---|
Page(s) | 544 - 548 | |
Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
DOI | https://doi.org/10.1209/epl/i2004-10385-0 | |
Published online | 14 January 2005 |
Experimental realization of breaking diffraction limit by planar negative-index metamaterials in free space
1
Department of Physics, National Cheng Kung University - Tainan 701, Taiwan
2
Department of Photonics & Institute of Electro-Optical Engineering National Chiao Tung University - Hsinchu 300, Taiwan
3
Microelectronics and Information System Research Center National Chiao Tung University - Hsinchu 300, Taiwan
4
Agilent Technol Inc - Jhongli, Taoyuan 320, Taiwan
Received:
23
September
2004
Accepted:
10
December
2004
The sharpness of the image formed by a conventional lens is
always limited by the wavelength of light. Recently, Pendry
proposed a superlens, with a negative refractive index, such that
the resolution is not limited by wavelength. Herein, we report
direct experimental evidence of Pendry's superlens breaking the
diffraction limit, in the microwave range of the X band
(8–12), with a periodic array of split ring resonators
and continuous wires; i.e. a meta-material with
negative index of refraction.
PACS: 42.79.Bh – Lenses, prisms and mirrors / 78.20.Ci – Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) / 41.20.Jb – Electromagnetic wave propagation; radiowave propagation
© EDP Sciences, 2005
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