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

doi:10.3390/nano10020290

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^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

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.

Original language	English
Article number	290
Journal	Nanomaterials
Volume	10
Issue number	2
DOIs	https://doi.org/10.3390/nano10020290
Publication status	Published - 2020 Feb

Keywords

Gold nanoisland film
Liquid crystal
Optical device

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science

Access to Document

10.3390/nano10020290

Cite this

@article{7141e0d06e9f4d0c93efd37329dee3d0,

title = "Optical properties of electrically active gold nanoisland films enabled with interfaced liquid crystals",

abstract = "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.",

keywords = "Gold nanoisland film, Liquid crystal, Optical device",

author = "Yen, {Hung Chi} and Kuo, {Tsung Rong} and Wang, {Chun Ta} and Lin, {Jia De} and Chen, {Chia Chun} and Hsiao, {Yu Cheng}",

note = "Publisher Copyright: {\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2020",

month = feb,

doi = "10.3390/nano10020290",

language = "English",

volume = "10",

journal = "Nanomaterials",

issn = "2079-4991",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "2",

}

TY - JOUR

T1 - Optical properties of electrically active gold nanoisland films enabled with interfaced liquid crystals

AU - Yen, Hung Chi

AU - Kuo, Tsung Rong

AU - Wang, Chun Ta

AU - Lin, Jia De

AU - Chen, Chia Chun

AU - Hsiao, Yu Cheng

PY - 2020/2

Y1 - 2020/2

N2 - 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.

AB - 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.

KW - Gold nanoisland film

KW - Liquid crystal

KW - Optical device

UR - http://www.scopus.com/inward/record.url?scp=85079232432&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85079232432&partnerID=8YFLogxK

U2 - 10.3390/nano10020290

DO - 10.3390/nano10020290

M3 - Article

AN - SCOPUS:85079232432

SN - 2079-4991

VL - 10

JO - Nanomaterials

JF - Nanomaterials

IS - 2

M1 - 290

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this