Examples of laminar flow microreactors for the synthesis of nonspherical silica, including anisotropic hollow ellipsoidal mesoporous silica (A), mesoporous silica nanofiber (B), mesoporous silica microflower (C), and two-dimensional hollow sandwich-like mesoporous silica nanosheet (D). Reproduced with permissions from ref.54,57,58, and60, respectively.