摘要:
When performing pattern writing by emitting an electron beam, a fixed frequency component, which is a component of a variation in an encoder signal from the encoder in one rotation of the rotation stage that commonly appears in a plurality of different rotational speeds of the rotation stage, is compensated for by deflection correcting the electron beam in a circumferential direction, and a variable frequency component, which is a component of the variation in the encoder signal other than the fixed frequency component, is compensated for by changing the clock frequency of a write clock.
摘要:
Provided is a maraging steel excellent in fatigue characteristics, including, in terms of % by mass: C: ≦0.015%, Ni: from 12.0 to 20.0%, Mo: from 3.0 to 6.0%, Co: from 5.0 to 13.0%, Al: from 0.01 to 0.3%, Ti: from 0.2 to 2.0%, O: ≦0.0020%, N: ≦0.0020%, and Zr: from 0.001 to 0.02%, with the balance being Fe and unavoidable impurities.
摘要:
A method of manufacturing a mother stamper comprises: a first resist layer formation process for forming a first resist layer on a substrate; a first electron beam irradiation process for irradiating electron beam at a first pattern on the first resist layer; a first development process for developing the first resist layer to remove the non-exposed area; a second resist layer formation process for forming a second resist layer on the substrate onto which the first resist layer remains; a second electron beam irradiation process for irradiating electron beam at a second pattern on the second resist layer; a second development process for developing the second resist layer to remove the exposed area that has been exposed in the second electron beam irradiation process; and an etching process for etching the substrate to provide a grooved pattern with different depths.