Special Section on Nanostructured Thin Films: Fabrication, Characterization, and Application

Synoptic view of Dyakonov–Tamm waves localized to the planar interface of two chiral sculptured thin films

[+] Author Affiliations
Jun Gao

Pennsylvania State University, Department of Engineering Science and Mechanics, Nanoengineered Metamaterials Group (NanoMM), University Park, Pennsylvania 16802-6812

Dalian University of Technology, School of Materials Science and Engineering, Surface Engineering Laboratory, Dalian 116024, China

Akhlesh Lakhtakia

Pennsylvania State University, Department of Engineering Science and Mechanics, Nanoengineered Metamaterials Group (NanoMM), University Park, Pennsylvania 16802-6812

Mingkai Lei

Dalian University of Technology, School of Materials Science and Engineering, Surface Engineering Laboratory, Dalian 116024, China

J. Nanophoton. 5(1), 051502 (February 02, 2011). doi:10.1117/1.3543814
History: Received August 12, 2010; Revised October 03, 2010; Accepted October 07, 2010; Published February 02, 2011; March 03, 2011
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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 solution exists, the corresponding Dyakonov–Tamm waves differ in phase speed and degree of localization to the interface. Fewer solutions were found when the two chiral STFs differ in many attributes.

© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Jun Gao ; Akhlesh Lakhtakia and Mingkai Lei
"Synoptic view of Dyakonov–Tamm waves localized to the planar interface of two chiral sculptured thin films", J. Nanophoton. 5(1), 051502 (February 02, 2011). ; http://dx.doi.org/10.1117/1.3543814


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