Figure 5.

Continuous laminar flow microreactors for the synthesis of sheet-like ZnO materials. (A) Illustration of the strategy for fabrication of controllable Al-doped ZnO (AZO) nanostructures: (a) step 1 for pre-seed substrates; (b) step 2 for in-situ hydrothermal method used for controllable AZO synthesis. Reproduced with permissions from reference⁶⁶, copyright 2015, Springer Nature. (B) Spiral-shaped laminar flow microreactor for the synthesis of ZnO nanosheet. Reproduced with permissions from reference⁸², copyright 2019, Elsevier.