Sub–Diffraction-Limited Optical Imaging with a Silver Superlens

  title={Sub–Diffraction-Limited Optical Imaging with a Silver Superlens},
  author={Nicholas Xuanlai Fang and Hyesog Lee and Cheng Sun and Xiang Zhang},
  pages={534 - 537}
Recent theory has predicted a superlens that is capable of producing sub–diffraction-limited images. This superlens would allow the recovery of evanescent waves in an image via the excitation of surface plasmons. Using silver as a natural optical superlens, we demonstrated sub–diffraction-limited imaging with 60-nanometer half-pitch resolution, or one-sixth of the illumination wavelength. By proper design of the working wavelength and the thickness of silver that allows access to a broad… 
Superlens-Based Nanoscale Imaging
Since the discovery of the superlens (a lens that uses metamaterials to go beyond the diffraction limit), optical imaging for nanometer-sized objects has become possible. A superlens basically aids
A Local Superlens
Superlenses enable near-field imaging beyond the optical diffraction limit. However, their widespread implementation in optical imaging technology so far has been limited by large-scale fabrication,
Wavelength-tunable superresolution imaging with a ferrite superlens
We theoretically propose a system capable of wavelength-tunable sub-diffraction-limited imaging by a single planar magnetic superlens, which is made of μ-negative ferrite material (MNM) slab. Our
Diffraction-managed superlensing using metallodielectric heterostructures
We show that subwavelength diffracted wave fields may be managed inside multilayered plasmonic devices to achieve ultra-resolving lensing. For that purpose we first transform both homogeneous waves
Experimental studies of far-field superlens for sub-diffractional optical imaging.
Experimental results show that feature resolution of better than 50nm is possible using current FSL design and design and fabricate a silver structured one dimensional FSL is designed and fabricated.
A smooth optical superlens
We demonstrate a smooth and low loss silver (Ag) optical superlens capable of resolving features at 1/12th of the illumination wavelength with high fidelity. This is made possible by utilizing
Localizing surface plasmons with a metal-cladding superlens for projecting deep-subwavelength patterns
Superlens, which is proposed to realize sub-diffraction-limited optical imaging, has been experimentally verified (N. Fang et al., Science 308, 534 (2005), D. Melville and R.J. Blaikie, Opt. Express
Realization of optical superlens imaging below the diffraction limit
Recently, the concept of superlensing has received considerable attention for its unique ability to produce images below the diffraction limit. The theoretical study has predicted a 'superlens' made
Subwavelength optical imaging with an array of silver nanorods
Tailoring the parameters of a silver nanorod array for subwavelength imaging of arbitrary coherent sources is of recent interest. We evaluated the operational bandwidth of this type of superlens, and


Rapid growth of evanescent wave by a silver superlens
Recent theoretical work suggested the possibility of constructing a super-resolution diffraction-free lens by using a negative refractive index medium (NRIM). The key proposition is that evanescent
Imaging properties of a metamaterial superlens
The subwavelength imaging quality of a metamaterial superlens is studied numerically in the wavevector domain. Examples of image compression and magnification are given and resolution limits are
Beaming Light from a Subwavelength Aperture
A periodic texture on the exit side of a single aperture in a metal film is created and, when combined with enhanced transmission, suggests that a wide range of photonic applications is possible.
Surface plasmon resonant interference nanolithography technique
We demonstrate a promising nanofabrication method, used to fabricate fine patterns beyond the diffraction limit, by employing surface plasmon polariton (SPP) resonance. Sub-100 nm lines were
Limitations on subdiffraction imaging with a negative refractive index slab
A planar slab of material, for which both the permittivity and permeability have the values of −1, can bring not only the propagating fields associated with a source to a focus, but can also refocus
Extraordinary optical transmission through sub-wavelength hole arrays
The desire to use and control photons in a manner analogous to the control of electrons in solids has inspired great interest in such topics as the localization of light, microcavity quantum
Submicroscopic pattern replication with visible light
Contact imaging with visible light is possible at submicroscopic resolution because the near field of a radiating object contains information of sufficiently high resolution. In this paper we
Regenerating evanescent waves from a silver superlens.
This study identifies a means to access deep subwavelength features by use of a metamaterial superlens, a precursor of superlensing, by regenerating evanescent waves by excitation of a surface plasmon.
Negative refraction makes a perfect lens
  • Pendry
  • Physics
    Physical review letters
  • 2000
The authors' 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, which resolves objects only a few nanometers across.
Photonic crystals: Imaging by flat lens using negative refraction
This work demonstrates this unique feature of imaging by a flat lens, using the phenomenon of negative refraction in a photonic crystalline material, in order to achieve negative refractive index over a wide range of angles.