DocumentCode
2498217
Title
Liquid Crystal Sensors with Capacitive Transduction
Author
Lindquist, Robert G. ; Abu-Abed, Alaeddin ; Choi, Woo-Hyuck
Author_Institution
Alabama Univ., Huntsville
fYear
2006
fDate
22-25 Oct. 2006
Firstpage
1341
Lastpage
1344
Abstract
In this paper, the theory for tracking the average molecular orientation of a liquid crystal material via capacitive sensing of anisotropic media is presented. Tracking the director axis of a nematic liquid crystal material can be achieved by two capacitance measurements. The sensitivity for the sensor at different alignments is studied. Both the experimental and calculated values for fringing capacitances of a selected interdigitated fingers sensor are presented.
Keywords
anisotropic media; capacitive sensors; liquid crystal devices; nematic liquid crystals; anisotropic media; capacitance measurements; capacitive transduction; interdigitated fingers sensor; liquid crystal sensors; molecular orientation tracking; nematic liquid crystal material; Anisotropic magnetoresistance; Biosensors; Capacitance measurement; Capacitive sensors; Chemical and biological sensors; Crystalline materials; Electrodes; Fingers; Liquid crystals; Permittivity;
fLanguage
English
Publisher
ieee
Conference_Titel
Sensors, 2006. 5th IEEE Conference on
Conference_Location
Daegu
ISSN
1930-0395
Print_ISBN
1-4244-0375-8
Electronic_ISBN
1930-0395
Type
conf
DOI
10.1109/ICSENS.2007.355878
Filename
4178873
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