Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 8, 2008
Patent Application Number
10102268
Date Filed
March 19, 2002
Patent Citations Received
Patent Primary Examiner
Patent abstract
Separation of long molecules by length is obtained by forcing such molecules to traverse a boundary between a low free-energy region and a high free-energy region. In one embodiment, the high free-energy region is a dense pillar region or other structure formed on a semiconductor substrate. One or more membranes are used in further embodiments. The low free-energy region is a larger chamber formed adjacent the high free-energy region. A recoil phase allows longer molecules not fully driven into the high free-energy region to recoil into the low free-energy region. In a further variation, the high free-energy region is a membrane having nanoscale holes.
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