Stabilization of Cholesteric Blue Phase upon Doping Nano-particlesand Its Application to Fast Response Display

在胆甾蓝相（BP）液晶（LC）中掺杂金纳米粒子（NPs）时，BP的温度范围从0.5℃增加到5℃。我们认为NPs在BP LC的晶格间隙中积累，稳定了BP的整体结构。利用np稳定的BP LC，可以通过施加与光传输方向平行的电场来实现与偏振无关的折射率（RI）调制。我们表明，场诱导的bp -胆固醇转变被抑制，可以实现更大的RI调谐。

When gold nanoparticles (NPs) were doped in a cholesteric blue phase (BP) liquid crystal (LC), the temperature range of the BP increased from 0.5 to 5 oC. We believe that the NPs accumulate in the lattice disclinations of BP LC, stabilizing the overall BP structure. Using the NP-stabilized BP LC, polarization-independent refractive index (RI) modulation can be achieved by applying an electric field parallel to the direction of light transmission. We show that field-induced BP-cholesteric transition is suppressed and a larger RI tuning can be achieved.