Patent ID: 7579086

Claim:
A substrate for use in crystallization comprising: a base member having a surface; and an organic molecular film on the surface of the base member, the organic molecular film having a thickness of 0.5 to 100 nm, the organic molecular film having non-affinity to a liquid to be crystallized, and the organic molecular film being bound to the surface of the base member via a covalent bond, wherein the surface of the substrate is formed with asperities having a plurality of protrusions with a height of 20 to 500 nm for supporting a droplet of the liquid, and a total area ratio at the uppermost level of the protrusions is 10 to 65% when the surface is observed from above; and wherein the base member has at least one indented portion having a depth of 100,000 to 5,000,000 nm to keep a droplet of the liquid from rolling over the surface of the substrate.