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Submicron Patterning Using Laser Interference Lithography, Luigi Pollara Verdoni
Submicron Patterning Using Laser Interference Lithography, Luigi Pollara Verdoni
Theses
In this thesis, the theory, fabrication protocol, and initial results of an alternative nanopatterning technique called Interferometric Lithography (IL) are presented. Comprised of the identical process attributes of traditional projection photolithography, IL mirrors the wafer preparation and development procedures of our existing clean room capabilities. The main departure is solely in means of pattern delineation. IL is a "mask less" technique that employs the interference fringe pattern of two coherent beams, and can therefore be generated with a commercial laser. Due to its simplicity, Interferometric Lithography provides an attractive supplement to existing methods of nano-patterning.
Utilizing a 325 nm HeCd …