Cholesteric blue phases (BPs) are liquid crystalline phases which form three-dimensional periodic structures. They are composed of a cylindrical substructure within which the liquid crystal director is doubly twisted; the double twist cylinders (DTCs) stack and form a lattice with either a body-centered cubic symmetry (BP I), or simple cubic symmetry (BP II). We have previously reported that transmission electron microscopy (TEM) can be a powerful tool to observe BPs in real space, but observation was limited to the (100) plane of the BP crystals. Here, we report real space observation of the (110) plane of BP crystals.
