標題: Electrically active nanoantenna array enabled by varying the molecular orientation of an interfaced liquid crystal
作者: Hsiao, Yu-Cheng
Su, Chen-Wei
Yang, Zong-Han
Cheypesh, Yevheniia I.
Yang, Jhen-Hong
Reshetnyak, Victor Yu.
Chen, Kuo-Ping
Lee, Wei
光電系統研究所
影像與生醫光電研究所
Institute of Photonic System
Institute of Imaging and Biomedical Photonics
公開日期: 1-一月-2016
摘要: A system comprising a gold nanoantenna array covered with a high-birefringence liquid crystal (LC) material is introduced. By applying voltage across the LC bulk, we demonstrate that the refractive-index and polarization changes significantly modify the hybrid plasmonic-photonic resonances in the system. The hybrid structure enables the active control of the spectrum as well as a large shift in resonance wavelength of the metallic nanoantennas by means of an externally applied electric field. Our modeling supports the observed results, by assuming that the nanoantenna array leads to two orthogonal easy axes with a finite anchoring energy. In combination of the nanostructured surface with birefringent LC, tunability up to 90 nm is achieved in the visible wavelengths, opening the door towards nanoscale displays or nano-optical switches.
URI: http://dx.doi.org/10.1039/c6ra11428h
http://hdl.handle.net/11536/132706
ISSN: 2046-2069
DOI: 10.1039/c6ra11428h
期刊: RSC ADVANCES
Volume: 6
Issue: 87
起始頁: 84500
結束頁: 84504
顯示於類別:期刊論文


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