METHODS FOR REDUCING CHARGE EFFECTS AND SEPARATION FORCES IN NANOIMPRINT
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United States of America Patent
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Mar 17, 2014
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Mar 15, 2013
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Abstract
The present invention relates to methods to reduce release force caused by tribo-charge. The invented mold is termed as MicroE mold and substrate is termed as MicroE substrate. The addition of conductive thin coatings (less than 10 nm and approaching monolayer coating) onto surface of insulating mold or substrate provides a reduction of the separation force caused by tribo-electric charge. The MicroE mold and MicroE substrate are specifically good for a lithographic method that involves contact between mold and substrate, or between mold and thin film carried on substrate, and used for creation and replication of ultra-fine structures (sub-25 nm) as well as millimeter scale. The present invention is particularly but not exclusively applied to any contact lithographic method.
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