Design of planar chiral metamaterials for near-infrared regime

被引：3
|
作者：
Kaya, Sabri [1 ,2 ]
Turkmen, Mustafa [1 ,2 ]
Topaktas, Omer [1 ]
机构：
[1] Erciyes Univ, Dept Elect & Elect Engn, TR-38039 Kayseri, Turkey
[2] Boston Univ, Dept Elect & Comp Engn, Photon Ctr, Boston, MA 02215 USA
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2017年 / 123卷 / 01期
关键词：
CIRCULAR-DICHROISM; MOLECULES;
D O I：
10.1007/s00339-016-0686-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Planar chiral metamaterials (PCMs) comprising double-layer dielectric-metal-dielectric resonant structures in the shape of a windmill are presented for near-infrared regime. The circular dichroism is retrieved from transmission spectra. Effects of used materials on circular dichroism characteristics of PCM arrays are investigated for the first time. The dependence of spectral characteristics on the geometrical parameters of the PCMs is analyzed by the finite-difference time-domain method. The observations indicated that the circular dichroism characteristics of the proposed PCM arrays are strongly dependent on the type of metal and dielectric materials. Due to the enhanced chiroptical near-field response and tunable spectral behavior, proposed PCM arrays may have potential for biosensing applications of chiral biomolecules.
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页数：6
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