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Abstract
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| This study is intended to focus on two main goals. One is the study of mixture of several nanodopants. Although many studies have focused on doped liquid crystals with one type of nanoparticle, studies with more than one type of nanoparticle in the same LC materials are scarce. A crucial issue is to ascertain whether the modifications induced by nanoparticles are additive, i.e., whether improvements in specific properties provided by different nanoparticles are reasonably kept in mixtures of two or more nanoparticles. This verification could be extremely interesting for the preparation of tailored materials for precise applications. The second goal is to prepare an electrical model of the doped LC cell, capable of predict its behavior at different frequencies. This model has been realized for undoped liquid crystal cells; its extension to nanodoped cells would allow to extract the contribution of the doping nanoparticle to parameters such as the characteristic impedance of the material. The study will be complemented with more classical measurements like birefringence, response time, transmittance, etc. Once the electrical and electrooptic behavior is adequately understood, the model will be extended to the above mentioned mixtures of multiple nanoparticles. This study needs, among other things, a wide nanoparticles catalog, the possibility of making homogeneous dispersions of nanoparticles and a large number of measurement instruments. The Charles Coulomb Laboratory of the University of Montpellier (France) has long experience in dispersions and characterization of different types of nanoparticles. For this reason, this host institution is a good option to perform the above described project. | |
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International
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Si |
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Place
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Montpellier,Francia |
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Type
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Start Date
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20/02/2014 |
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End Date
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26/04/2014 |