There is enough evidence to re-examine disclinations and hedgehogs, the singularities often observed in nematic liquid crystals, in the light of a new theory that allows for local changes in the degree of orientation.
Singolarità di linea e di punto in cristalli liquidi nematici con graào à'orientamento variabile. Si esaminano le singolarità di linea e di punto, che spesso sono presenti nei cristalli liquidi, alla luce di una nuova teoria di Ericksen in cui si ammette che il grado d'orientamento del cristallo possa variare nello spazio.
@article{RLIN_1990_9_1_3_275_0, author = {Epifanio G. Virga}, title = {Disclinations and hedgehogs in nematic liquid crystals with variable degree of orientation}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni}, volume = {1}, year = {1990}, pages = {275-280}, zbl = {0713.76015}, mrnumber = {1083255}, language = {en}, url = {http://dml.mathdoc.fr/item/RLIN_1990_9_1_3_275_0} }
Virga, Epifanio G. Disclinations and hedgehogs in nematic liquid crystals with variable degree of orientation. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 1 (1990) pp. 275-280. http://gdmltest.u-ga.fr/item/RLIN_1990_9_1_3_275_0/
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