Electro‐optical Memory of a Nanoengineered Amorphous Blue‐Phase‐III Polymer Scaffold

An electro‐optical (EO) memory device is presented, which is based on a 3D nanostructured polymer scaffold of the amorphous blue phase III (BPIII) of cholesteric liquid crystals (LCs), which can impart optical isotropy, optical activity, and sub‐millisecond EO response of BPIII to conventional nematic LCs. This functional scaffold also enables the first experimental observation of the long debated structure of BPIII.