Irreversible redshift of transmission spectrum of gold nanoparticles doped in liquid crystals

Li Hsuan Hsu; Kuang Yao Lo; Shih An Huang; Chi Yen Huang; Chung Sung Yang

doi:10.1063/1.2926658

Irreversible redshift of transmission spectrum of gold nanoparticles doped in liquid crystals

Li Hsuan Hsu, Kuang Yao Lo, Shih An Huang, Chi Yen Huang, Chung Sung Yang

Department of Physics

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

18 Citations (Scopus)

Abstract

The absorption peak of gold (Au) nanoparticles doped in liquid crystal (ANDLC) is controllable by applying an external applied voltage before aggregation occurs. Au nanoparticles aggregate when the dielectrophoresis force, which is induced by the gradient of the square of the electric filed close to the sides of the host liquid crystal cell, overcomes the viscosity between Au nanoparticles and the LCs. This result leads to the irreversible redshift. A controllable filter with unpolarized light enables an ANDLC cell under the threshold voltage to prevent the aggregation effect.

Original language	English
Article number	181112
Journal	Applied Physics Letters
Volume	92
Issue number	18
DOIs	https://doi.org/10.1063/1.2926658
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2926658

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title = "Irreversible redshift of transmission spectrum of gold nanoparticles doped in liquid crystals",

abstract = "The absorption peak of gold (Au) nanoparticles doped in liquid crystal (ANDLC) is controllable by applying an external applied voltage before aggregation occurs. Au nanoparticles aggregate when the dielectrophoresis force, which is induced by the gradient of the square of the electric filed close to the sides of the host liquid crystal cell, overcomes the viscosity between Au nanoparticles and the LCs. This result leads to the irreversible redshift. A controllable filter with unpolarized light enables an ANDLC cell under the threshold voltage to prevent the aggregation effect.",

author = "Hsu, {Li Hsuan} and Lo, {Kuang Yao} and Huang, {Shih An} and Huang, {Chi Yen} and Yang, {Chung Sung}",

note = "Funding Information: This work was supported from the National Science Council of the Republic of China under Contract No. 96-2112-M-415-004-MY3, and the assistance of Lithography Area and Optoelectronic Analysis Lab in NCYU. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2008",

doi = "10.1063/1.2926658",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

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T1 - Irreversible redshift of transmission spectrum of gold nanoparticles doped in liquid crystals

AU - Hsu, Li Hsuan

AU - Lo, Kuang Yao

AU - Huang, Shih An

AU - Huang, Chi Yen

AU - Yang, Chung Sung

N1 - Funding Information: This work was supported from the National Science Council of the Republic of China under Contract No. 96-2112-M-415-004-MY3, and the assistance of Lithography Area and Optoelectronic Analysis Lab in NCYU. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2008

Y1 - 2008

N2 - The absorption peak of gold (Au) nanoparticles doped in liquid crystal (ANDLC) is controllable by applying an external applied voltage before aggregation occurs. Au nanoparticles aggregate when the dielectrophoresis force, which is induced by the gradient of the square of the electric filed close to the sides of the host liquid crystal cell, overcomes the viscosity between Au nanoparticles and the LCs. This result leads to the irreversible redshift. A controllable filter with unpolarized light enables an ANDLC cell under the threshold voltage to prevent the aggregation effect.

AB - The absorption peak of gold (Au) nanoparticles doped in liquid crystal (ANDLC) is controllable by applying an external applied voltage before aggregation occurs. Au nanoparticles aggregate when the dielectrophoresis force, which is induced by the gradient of the square of the electric filed close to the sides of the host liquid crystal cell, overcomes the viscosity between Au nanoparticles and the LCs. This result leads to the irreversible redshift. A controllable filter with unpolarized light enables an ANDLC cell under the threshold voltage to prevent the aggregation effect.

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Irreversible redshift of transmission spectrum of gold nanoparticles doped in liquid crystals

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