Patent ID: 7705966

Claim:
An exposure apparatus configured to expose a substrate through a liquid, the exposure apparatus comprising: a projection optical system arranged to project a pattern of a reticle onto the substrate; and a nozzle unit arranged around a final lens of the projection optical system, wherein the nozzle unit has a liquid recovery port arranged to recover the liquid and a liquid supply port arranged between the final lens and the liquid recovery port and supplying the liquid, the liquid recovery port and the liquid supply port being formed in a surface of the nozzle unit which is positioned to face the substrate, a static contact angle of a second portion of the surface of the nozzle unit, which is positioned on an outer side than the liquid recovery port, with respect to the liquid, is larger than a static contact angle of a first portion of the nozzle unit surface, which is positioned on an inner side than the liquid recovery port, with respect to the liquid by 20° or more, and a sliding angle of the second portion with respect to the liquid is 20° or less.