Voltage-assisted ion reduction in liquid crystal-silica nanoparticle dispersions

Shu Wei Liao; Chia Ting Hsieh; Chih Chin Kuo; Chi-Yen Huang

doi:10.1063/1.4760277

Voltage-assisted ion reduction in liquid crystal-silica nanoparticle dispersions

Shu Wei Liao, Chia Ting Hsieh, Chih Chin Kuo, Chi-Yen Huang

Graduate Institute of Photonics

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

We demonstrate an effective method of reducing mobile ions in a silica nanoparticle (SN)-doped liquid crystal (LC) cell by alternating-current high-voltage pulse treatment (ACHVPT). In this method, the director distortion in LCs near the substrate creates a lifting force that moves the SNs toward the substrate. The moving SNs trap mobile ions in the cell bulk. After ACHVPT, the SNs and mobile ions are adsorbed onto the substrates, thereby significantly decreasing cell ion density. The ion density of the SN-doped LC cell after ACHVPT treatment is 1.5 of that of a pristine LC cell.

Original language	English
Article number	161906
Journal	Applied Physics Letters
Volume	101
Issue number	16
DOIs	https://doi.org/10.1063/1.4760277
Publication status	Published - 2012 Oct 15

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4760277

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Liao, S. W., Hsieh, C. T., Kuo, C. C., & Huang, C-Y. (2012). Voltage-assisted ion reduction in liquid crystal-silica nanoparticle dispersions. Applied Physics Letters, 101(16), [161906]. https://doi.org/10.1063/1.4760277

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AB - We demonstrate an effective method of reducing mobile ions in a silica nanoparticle (SN)-doped liquid crystal (LC) cell by alternating-current high-voltage pulse treatment (ACHVPT). In this method, the director distortion in LCs near the substrate creates a lifting force that moves the SNs toward the substrate. The moving SNs trap mobile ions in the cell bulk. After ACHVPT, the SNs and mobile ions are adsorbed onto the substrates, thereby significantly decreasing cell ion density. The ion density of the SN-doped LC cell after ACHVPT treatment is 1.5 of that of a pristine LC cell.

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