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  Polarization-controlled directional scattering for nanoscopic position sensing

Neugebauer, M., Wozniak, P., Bag, A., Leuchs, G., & Banzer, P. (2016). Polarization-controlled directional scattering for nanoscopic position sensing. NATURE COMMUNICATIONS, 7: 11286. doi:10.1038/ncomms11286.

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 Creators:
Neugebauer, Martin1, Author           
Wozniak, Pawel1, Author           
Bag, Ankan1, 2, Author
Leuchs, Gerd3, Author           
Banzer, Peter1, Author           
Affiliations:
1Interference Microscopy and Nanooptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364700              
2International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society, Staudtstraße 2, 91058 Erlangen, DE, ou_2364697              
3Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364698              

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Free keywords: CYLINDRICAL-VECTOR BEAMS; FLUORESCENCE MICROSCOPY; MAGNETIC RESPONSE; NANOPARTICLES; RESOLUTION; LIGHT; RESONANCES; LOCALIZATION; DIFFRACTION; TRACKINGScience & Technology - Other Topics;
 Abstract: Controlling the propagation and coupling of light to sub-wavelength antennas is a crucial prerequisite for many nanoscale optical devices. Recently, the main focus of attention has been directed towards high-refractive-index materials such as silicon as an integral part of the antenna design. This development is motivated by the rich spectral properties of individual high-refractive-index nanoparticles. Here we take advantage of the interference of their magnetic and electric resonances to achieve strong lateral directionality. For controlled excitation of a spherical silicon nanoantenna, we use tightly focused radially polarized light. The resultant directional emission depends on the antenna's position relative to the focus. This approach finds application as a novel position sensing technique, which might be implemented in modern nanometrology and super-resolution microscopy set-ups. We demonstrate in a proof-of-concept experiment that a lateral resolution in the Angstrom regime can be achieved.

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Language(s): eng - English
 Dates: 2016
 Publication Status: Published online
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000374563500001
DOI: 10.1038/ncomms11286
 Degree: -

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Title: NATURE COMMUNICATIONS
Source Genre: Journal
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Publ. Info: MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND : NATURE PUBLISHING GROUP
Pages: - Volume / Issue: 7 Sequence Number: 11286 Start / End Page: - Identifier: ISSN: 2041-1723