Strong Electric Field Effect on Some Nematic Liquid Crystals
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چکیده
In the previous chapter we have described an experimental technique which allows us to measure the local temperature of the sample under the application of a strong electric field.. We have also described setups for electrical impedance measurement and optical studies. In this chapter we present experimental results obtained using these techniques to study the electric field effect on the nematic-isotropic phase transition in a few compounds. First we will discuss the theoretical background to this problem on the basis of a phenomenological Landau model.
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