TITANIUM MEMBER, MANUFACTURING METHOD FOR TITANIUM MEMBER, AND DECORATIVE ITEM INCLUDING TITANIUM MEMBER

摘要

A titanium member having a surface comprising a first region in which a plurality of first protrusion structures extending in a first direction is arranged in a second direction that is orthogonal to the first direction, wherein the first protrusion structures have first protrusions aligned at intervals of several hundred nanometers along the first direction on the top surface of the first protrusion structure, and the height of the protrusions is several tens of nanometers.