Abstract
In this paper, doping liquid materials to enhance the electro-optical (EO) properties of twisted nematic liquid crystals (NLCs) was presented. Two aromatic hydrocarbon (AH) liquids, toluene and 1-methylnaphthalene, were chosen as dopants in order to lower the driving voltage and response time of the NLCs. A 18% decrease in driving voltage and response time was achieved by doping 10 wt% toluene into NLCs. The main reason of this phenomenon is due to a large amount of reduction in the rotational viscosity of AH liquids doped NLCs. This method provides an easy and potential choice for applications in various LC display systems.
Highlights
Liquid crystals (LCs) are currently one of the most employed materials for electro-optical (EO) applications
Based on the aromatic dopants which researchers had utilized [9,10,11,12], our results demonstrate a much simpler and more common choice of doping aromatic hydrocarbon (AH) liquid materials into nematic liquid crystals (NLCs)
There were no noticeable defects in the AH liquids doped NLCs
Summary
Liquid crystals (LCs) are currently one of the most employed materials for electro-optical (EO) applications. A variety of valuable effects has been observed including maintaining the voltage holding ratio, lowering the threshold voltage, suppressing the screen effect, or reducing the transient current [1,2,3,4,5,6] These nanoparticles might precipitate or aggregate to cause topological defects and to increase the response time and break the phase of LCs [7, 8]. Based on the aromatic dopants which researchers had utilized [9,10,11,12], our results demonstrate a much simpler and more common choice of doping AH liquid materials into NLCs. The AH liquids are potentially used in different LC systems that open a simple and efficient way to enhance the performance of LC electro-optical devices for display applications
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