3. Physical characteristics and structure-properties correlation
3.1 Elastic constants
In the absence of any external intervention, the nematic liquid crystal chooses a uniform molecular orientation. To change this orientation, energy must be expended, just as to deform a solid. The elastic constants used in Frank's elastic theory are a measure of this energy. The greater the constants, the more difficult it is to deform the structure. In the case of liquid crystals, this involves a change of orientation, which is why the word "distortion" replaces "deformation".
In the presence of external actions (mechanical, electrical or magnetic), the liquid crystal chooses a texture that ensures the minimum of its total energy. If the molecular orientation of the nematic liquid crystal is described by the local director
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Physical characteristics and structure-properties correlation
Liquid crystal display techniques
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Two major exhibitions and conferences are organized each year, bringing together the major producers of liquid crystals and displays: the Society for Information Display (SID) in the USA, and IMID (International Meeting on Information Displays) in Asia.
Two other biennial conferences are organized in turn: European Conference on Liquid Crystals, organized in 2011 in Maribor http://eclc2011.fnm.uni-mb.si...
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