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  Optical alignment of oval graphene flakes

Mobini, E., Rahimzadegan, A., Alaee, R., & Rockstuhl, C. (2017). Optical alignment of oval graphene flakes. OPTICS LETTERS, 42(6), 1039-1042. doi:10.1364/OL.42.001039.

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 Creators:
Mobini, E.1, Author
Rahimzadegan, A.1, Author
Alaee, R.2, 3, Author           
Rockstuhl, C.1, Author
Affiliations:
1external, ou_persistent22              
2Sandoghdar Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364722              
3Karlsruhe Inst Technol, Inst Theoret Solid State Phys, Karlsruhe, Germany, ou_persistent22              

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Free keywords: FORCES; MANIPULATION; PLASMONICS; PARTICLES; TWEEZERS; LIGHT; FIELD; LAYEROptics;
 Abstract: Patterned graphene, as an atomically thin layer, supports localized surface plasmon polaritons at mid-infrared or far-infrared frequencies. This provides a pronounced optical force/torque in addition to large optical cross sections and will make it an ideal candidate for optical manipulation. Here, we study the optical force and torque exerted by a linearly polarized plane wave on circular and oval graphene flakes (single layers of graphene). While the torque vanishes for circular flakes, the finite torque allows rotating and orienting oval flakes relative to the electric field polarization. Depending on the wavelength, the alignment is either parallel or perpendicular to the electric field vector. In our contribution, we rely on a full-wave numerical simulation and also on an analytical model that treats the graphene flakes in a dipole approximation. The presented results reveal a good level of control on the spatial alignment of graphene flakes subjected to far-infrared illumination. (C) 2017 Optical Society of America

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000397916400006
DOI: 10.1364/OL.42.001039
 Degree: -

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Title: OPTICS LETTERS
Source Genre: Journal
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Publ. Info: 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA : OPTICAL SOC AMER
Pages: - Volume / Issue: 42 (6) Sequence Number: - Start / End Page: 1039 - 1042 Identifier: ISSN: 0146-9592