Synthesis of single-crystalline ZnO polyhedral submicrometer-sized hollow beads using laser-assisted growth with ethanol droplets as soft templates

Synthesis of single-crystalline ZnO polyhedral submicrometer-sized hollow beads was carried out using laser assisted growth with Ethanol droplets as soft templates. Fabrication of hollow structures was predicted to open up possibilities for various new application fields such as light weight material. General approach for preparation of such material was based on the use of various removable templates or surfactant-stabilized oil-in-water emulsion droplets. Their interconnect was dominated by EOF making them applicable for injection of small amounts of analyte solutions from one microchannel into another.