Optical properties of electrically active gold nanoisland films enabled with interfaced liquid crystals

Hung Chi Yen, Tsung Rong Kuo, Chun Ta Wang, Jia De Lin, Chia Chun Chen, Yu Cheng Hsiao

研究成果: 雜誌貢獻文章

摘要

A system comprising a gold nanoisland film (Au NIF) covered with a liquid crystal (LC) material is introduced. By applying a voltage across the LC bulk, we demonstrate that changes in the refractive-index and orientation significantly modified the hybrid plasmonic–photonic resonances of the Au NIF. The hybrid structure enabled active control of the spectrum of the resonance wavelength of the metallic nanoisland by means of an externally applied electric field. Our modeling supports the observed results in LC/Au NIF. In a combination of the nanostructured surface with birefringent LCs, nonpolarized wavelength tunability of ~15 nm and absorbance tunability of ~0.024 were achieved in the visible wavelength, opening the door to optical devices and nanoscale sensors.
原文英語
文章編號290
期刊Nanomaterials
10
發行號2
DOIs
出版狀態已發佈 - 二月 1 2020

    指紋

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)

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