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Proceedings Paper

Dyakonov--Tamm waves localized to the planar interface of two chiral sculptured thin films
Author(s): Jun Gao; Akhlesh Lakhtakia; Mingkai Lei
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Paper Abstract

The Dyakonov-Tamm wave combines the features of the Dyakonov wave and the Tamm electronic state. Dyakonov-Tamm waves guided by the planar interface of two dissimilar chiral sculptured thin films (STFs) were systematically examined. The interfaces result from the chiral STFs being dissimilar in (a) orientation about the helical axis, (b) structural handedness, (c) structural period, (d) vapor incidence angle, (e) material, or (f) various combinations thereof. A boundary-value problem for the propagation of Dyakonov-Tamm waves was formulated and numerically solved. Up to three physical solutions were obtained for any specific combination of constitutive properties of the two chiral STFs. Each solution indicates the existence of a Dyakonov-Tamm wave. If more than one solutions exist, the corresponding Dyakonov-Tamm waves differ in phase speed and degree of localization to the interface.

Paper Details

Date Published: 24 August 2010
PDF: 17 pages
Proc. SPIE 7766, Nanostructured Thin Films III, 77660K (24 August 2010); doi: 10.1117/12.860073
Show Author Affiliations
Jun Gao, Dalian Univ. of Technology (China)
The Pennsylvania State Univ. (United States)
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)
Mingkai Lei, Dalian Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7766:
Nanostructured Thin Films III
Raúl J. Martin-Palma; Yi-Jun Jen; Akhlesh Lakhtakia, Editor(s)

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