Istituto di Matematica Applicata e Tecnologie Informatiche     
Gartland E. C., Sonnet A. M., Virga E. G. Elastic forces on nematic point defects. Preprint ercim.cnr.ian//2002-1316, 2002.
We present a general method to compute the elastic forces exerted on nematic point defects: these are the forces that set defects in motion, and so they are especially relevant to defect dynamics, a subject which is recently attracting much interest. These forces are mediated by the distortion introduced by defects in the director field; for example, they are responsible for the attraction between defects of opposite topological charge.
Subject Nematic liquid crystals
Point defects

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