Nanoparticles shown in Q.9 can be synthesized by using high temperature and high pressure water. At the same time, the surface can be organically modified. The organic substances used are mainly those with a carboxyl group (such as alkylcarboxylic acids). Here are some examples.

Shape control / crystal plane control

CeO₂ nanoparticles

a) Unmodified: octahedron-shaped nanocrystal with (111) surface
b) Moderately modified: cubic nanocrystal with (100) surface (high reactivity)
c) Highly modified: pentadecahedron-shaped nanocrystal

Low viscosity and high concentration dispersion

Alumina with different particle sizes is mixed to increase the volume ratio up to 80% and maintain fluidity.

→ Encapsulant for electronic device packaging

Heat conductive filler used for heat dissipation material

Organic modified Al₂O₃