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Proceedings Paper

Effect of rotational symmetry on the optical rotation of using asymmetrical nanostructures
Author(s): Y. L. Hor; W. K. Phua; Y. J. Liu; S. Wu; D. Popp; Eunice S. P. Leong; K. L. Mok; J. H. Teng; R. Robinson; E. P. Li; E. H. Khoo
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Paper Abstract

In this paper, we rotate an array of asymmetrical double layer of 4-strips windmill structure to investigate its effect on the chirality and sensitivity detection of biomolecular structures. The structure is made up of silver material with 300nm pitch and 10nm separation between layers. The spectrum shows two resonance modes on 600THz and 900THz with linear polarized light normally incident on the structure. We investigate the CD by rotating one of the layers with respect to the horizontal axis of the other layer by the angle θ. It is observed that the CD spectra at different angles are different. The rotation resulted in larger wavelength shift of the CD spectra. In addition, the CD also increases with the rotating angle given a larger absorption difference between the left and right handed circular polarized light.

Paper Details

Date Published: 11 September 2013
PDF: 6 pages
Proc. SPIE 8806, Metamaterials: Fundamentals and Applications VI, 88062F (11 September 2013); doi: 10.1117/12.2022945
Show Author Affiliations
Y. L. Hor, A*STAR Institute of High Performance Computing (Singapore)
W. K. Phua, A*STAR Institute of High Performance Computing (Singapore)
Y. J. Liu, A*STAR Institute of Materials Research and Engineering (Singapore)
S. Wu, A*STAR Institute of Materials Research and Engineering (Singapore)
D. Popp, A*STAR Institute of Molecular and Cell Biology (Singapore)
Eunice S. P. Leong, A*STAR Institute of Materials Research and Engineering (Singapore)
K. L. Mok, A*STAR Institute of Molecular and Cell Biology (Singapore)
J. H. Teng, A*STAR Institute of Materials Research and Engineering (Singapore)
R. Robinson, A*STAR Institute of Molecular and Cell Biology (Singapore)
E. P. Li, A*STAR Institute of High Performance Computing (Singapore)
E. H. Khoo, A*STAR Institute of High Performance Computing (Singapore)


Published in SPIE Proceedings Vol. 8806:
Metamaterials: Fundamentals and Applications VI
Allan D. Boardman; Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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