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

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

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


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 languageEnglish
Article number161906
JournalApplied Physics Letters
Issue number16
Publication statusPublished - 2012 Oct 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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