Surface structure of article

摘要

Disclosed is a surface structure of an article (1) including multiple protrusions (3) on the surface. A height H of the protrusions (3) is equal to or larger than 5 μm, and equal to or smaller than 32 μm, as well as at least one of a distance P between each two neighboring protrusions (3) and a distance W between each neighboring two of recesses (5) formed between the protrusions (3) is larger than the height H of the protrusions (3).

主权项

1. A surface structure of an article comprising, on an exposed surface, a plurality of hemispherical protrusions satisfying conditions (1), (2), and (3) given below:
(1) a height H of the protrusions is equal to or larger than 5 μm, and equal to or smaller than 32 μm; (2) a ratio H/P between the height H of the protrusions and a distance P between centers of two neighboring protrusions is in a range of 1/5 to 1/2, and (3) a frictional coefficient between a human finger and the exposed surface is within a range of 0.55±0.15.