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With a suitable bias electrical field, the sensitivity, response speed and signal strength of LC based optical sensor can be improved greatly. The field can enhance the optical anisotropy of LC sensing for binding event.
This paper reports the design of a microstructure comprising an interdigitated capacitance structure for the detection of vapor-phase analytes based on nematic liquid crystal (NLC) sensor. The NLC sensor is tested by using demethyl-methylphosphonate (DMMP) detection to change the orientational response of the liquid crystal molecules and demonstrated by the optical monitoring as well as the capacitive...
Using the orientation order of the liquid crystal molecules in chemical and biological sensors has been widely investigated. In this paper, a capacitive technique to monitor the functionality of anchoring energy in liquid crystal alignment layers is presented. Sensing changes in the anchoring energy of a liquid crystal film can significantly improve sensitivity of liquid crystal based sensors. The...
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