Temperature-tunable lasing in negative dielectric chiral nematic liquid crystal*
Wu Ri-Na, Wu Jie, Wu Xiao-Jiao, Dai Qin†
       
Pitch measured by wedge cell. (a) Structure of wedge cell; (b) the number of dislocation lines are 13.5 at 14 °C; (c) the number of dislocation lines are 13 at 25 °C; (d) the number of dislocation lines are 12.5 at 36 °C.