Optical super-resolution by high-index liquid-immersed microspheres

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In 1873, Ernst Abbe discovered what was to become a well-known paradigm: the inability of a lens-based optical microscope to discern details that are closer together than half of the wavelength of light. However, for its most popular imaging mode, fluorescence microscopy, the diffraction barrier is crumbling. Here, I discuss the physical concepts that have pushed fluorescence microscopy to the nanoscale, once the prerogative of electron and scanning probe microscopes. Initial applications indicate that emergent far-field optical nanoscopy will have a strong impact in the life sciences and in other areas benefiting from nanoscale visualization.

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Negative refraction makes a perfect lens

Elizabeth Pendry, K Pendry (2001)

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.

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Optical Hyperlens: Far-field imaging beyond the diffraction limit

, , (2006)

We propose an approach to far-field optical imaging beyond the diffraction limit. The proposed system allows image magnification, is robust with respect to material losses and can be fabricated by adapting existing metamaterial technologies in a cylindrical geometry.

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Journal

Title: Applied Physics Letters

Abbreviated Title: Appl. Phys. Lett.

Publisher: AIP Publishing

ISSN (Print): 0003-6951

ISSN (Electronic): 1077-3118

Publication date Created: October 2012

Publication date (Print): October 2012

Volume: 101

Issue: 14

Page: 141128

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DOI: 10.1063/1.4757600

SO-VID: 07a62575-a5cb-473d-adf3-10bcd7850a76

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Optical super-resolution by high-index liquid-immersed microspheres

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HR-EBSD (High Resolution - Electron Back Scatter Diffraction)

Most cited references 22

Far-field optical nanoscopy.

Negative refraction makes a perfect lens

Optical Hyperlens: Far-field imaging beyond the diffraction limit

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