Additive manufacturing is an innovative manufacturing technique for producing a three-dimensional complex shape. This study was examined the influence of sub-micron alumina slurry properties and modeling conditions on the fabrication of three-dimensional alumina bodies by using digital light projection stereolithography （DLP-SLA）. Relationship between cure depth and energy dose was amenable to the Beer-Lambert law. The cure depth was greatly affected by alumina slurry concentration. However, there was no significant difference between the cure depth at the slurry concentration 50～75mass％. The viscosity was adjusted to slurry concentration 65～75mass％ to be less than 3000mPa･s. Three-dimensional cube lattice alumina green bodies were modeled layer-by-layer under the condition of energy dose 8～30mJ/cm² and layer thickness 25～100μm. After debinding and sintering, dense alumina sintered bodies were obtained close to the design of CAD data.

ZnO particles formed via the oxidation of Zn vapor in air have various morphologies, such as sphere, tetrapod and needle. It is difficult to control their shape and size by the gas-phase CVD process. In the present work, we applied a flow restrictor to change the local mixing state between Zn vapor and oxygen so as to control the spatial formation rate of ZnO monomers. As a result we found that a simple device of flow restrictor is effective for producing ZnO embryos in the core stream of ZnO and subsequent growth of embryos to form tetrapod-shaped ZnO by the condensation of ZnO monomers onto the embryos. The effectiveness of flow restrictor for the formation of tetrapod-shaped ZnO was confirmed by solving the distribution of reaction rate of Zn vapor in air by using a CFD simulation.

Particulate materials are adsorbed at fluid/fluid interfaces, such as oil/water and air/water interfaces, forming adsorbed films around fluid drops dispersed in another fluid. The adsorbed films can stabilize emulsions and foams by preventing liquid drops and air bubbles from coalescing each other and disproportionation. Liquids can be powderized by the particle adsorption. The material called "dry water（dry liquid）" behaves free-flowing powder but contains a large amount of water（liquid）as micromter-sized drops covered by hydrophobic（liquid-repellent）particles. This fascinating material can be utilized in many fields, for example, cosmetic, pharmaceutical, and food industries.