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US5227626A Lithography apparatus using scanning tunneling microscopy 失效
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Lithography apparatus using scanning tunneling microscopy
摘要:
A lithography apparatus is provided with an SXM base, which has a plurality of cantilevers movably supporting probes at their free ends, respectively. The SXM base is secured to a mirror base by a support arm via inchworm devices, such that it faces a silicon wafer placed on a wafer stage. The silicon wafer has an alignment pattern formed thereon, while the SXM base has a reference alignment pattern formed thereon which is similar to the alignment pattern. A voltage is applied to the probes at a predetermined point of time under the control of a controller while a gas containing a film-forming material is being supplied onto the wafer, whereby the film-forming material is adsorbed in a desired portion of the surface of the wafer.
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