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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 19 — Sep. 13, 2010
  • pp: 19665–19671

Electromagnetic energy vortex associated with sub-wavelength plasmonic Taiji marks

Wei Ting Chen, Pin Chieh Wu, Chen Jung Chen, Hung-Yi Chung, Yuan-Fong Chau, Chieh-Hsiung Kuan, and Din Ping Tsai  »View Author Affiliations

Optics Express, Vol. 18, Issue 19, pp. 19665-19671 (2010)

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The Taiji symbol is a very old schematic representation of two opposing but complementary patterns in oriental civilization. Using electron beam lithography, we fabricated an array of 70 × 70 gold Taiji marks with 30nm thickness and a total area of 50 × 50 µm2 on a fused silica substrate. The diameter of each Taiji mark is 500nm, while the period of the array is 700nm. Here we present experimental as well as numerical simulation results pertaining to plasmonic resonances of several Taiji nano-structures under normal illumination. We have identified a Taiji structure with a particularly interesting vortex-like Poynting vector profile, which could be attributed to the special shape and dimensions of the Taiji symbol.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: June 28, 2010
Revised Manuscript: July 24, 2010
Manuscript Accepted: August 25, 2010
Published: August 31, 2010

Wei Ting Chen, Pin Chieh Wu, Chen Jung Chen, Hung-Yi Chung, Yuan-Fong Chau, Chieh-Hsiung Kuan, and Din Ping Tsai, "Electromagnetic energy vortex associated with sub-wavelength plasmonic Taiji marks," Opt. Express 18, 19665-19671 (2010)

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