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Effects of pulsed electric fields on a nematic device with a ferroelectric ceramic substrate

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Roy, SS, Gleeson, HF, Whatmore, RW, Shaw, CP and Zhang, Q (2001) Effects of pulsed electric fields on a nematic device with a ferroelectric ceramic substrate. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 368 . pp. 3777-3783. [Journal article]

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Abstract

We report details of the interaction between a thin film of ferroelectric ceramic (lead zirconate-lead titanate) and an overlying layer of nematic liquid crystal. Pulsed electric fields of 1ms duration and of varying amplitudes and polarity have been used to achieve different degrees of poling within devices in which one substrate includes the ferroelectric ceramic layer. The degree of orientation of the nematic liquid crystal is found to depend on both the amplitude and polarity of the poling voltage employed. The magnitude of the poling voltage necessary to induce reorientation in the liquid crystal compares reasonably with the calculated value. The reorientation of the nematic liquid crystal due to the interaction with poled grains of PZT is stable for at least several months.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:14085
Deposited By:Dr Susanta Sinha Roy
Deposited On:07 Jun 2010 15:10
Last Modified:18 Aug 2011 12:03

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