TY - JOUR
T1 - Synoptic view of dyakonov-tamm waves localized to the planar interface of two chiral sculptured thin films
AU - Gao, Jun
AU - Lakhtakia, Akhlesh
AU - Lei, Mingkai
N1 - Funding Information:
A surface wave is an electromagnetic wave that propagates guided by the planar interface of two different mediums and rapidly decays away from the interface. Because of its remarkable characteristics, a surface wave has many applications for chemical and biological sensing, imaging, and communications. Different pairs of partnering materials may guide different types of surface waves. At the beginning of the 20th century, Zenneck1 discovered a surface wave guided by the planar interface of air and either ground or water. This surface wave came to be later known as the Zenneck wave. Subsequent research led to the best-known surface wave: the surface-plasmon-polariton (SPP) wave, which is supported by the interface of a dielectric material and a metal.2,3 The SPP wave is widely exploited in extremely sensitive sensors of chemicals.4–6
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1117/1.3543814
DO - 10.1117/1.3543814
M3 - Review article
AN - SCOPUS:79551692757
SN - 1934-2608
VL - 5
JO - Journal of Nanophotonics
JF - Journal of Nanophotonics
IS - 1
M1 - 011502
ER -