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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/15100

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15100

Title:	Irreversible Redshift of Transmission Spectrum of Gold Nanoparticles Doped in Liquid Crystals
Authors:	Hsu, Li-Hsuan;Lo, Kuang-Yao;Huang, Shih-An;Huang, Chi-Yen;Yang, Chung-Sung
Contributors:	光電科技研究所
Date:	2008-05
Issue Date:	2013-01-07T02:10:44Z
Publisher:	American Institute of Physics
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.
Relation:	Appl. Phys. Lett., 92(18): 181112
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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