Elastic forces on nematic points defects

Gartland, E.C. and Sonnet, A.M. and Virga, E.G. (2002) Elastic forces on nematic points defects. Continuum Mechanics and Thermodynamics, 14 (3). pp. 307-319. ISSN 0935-1175 (http://dx.doi.org/10.1007/s00161-002-0099-8)

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Abstract

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.