Curvature-Induced Twist in Homeotropic Nematic Tori. - Ellis, Perry W.; Nayani, Karthik; McInerney, James P.; Rocklin, D. Zeb; Jung Ok Park; Srinivasarao, Mohan; Matsumoto, Elisabetta A.; Fernandez-Nieves, Alberto (Physical Review Letters, 2018)