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Directed self-assembly (DSA) is a type of directed assembly which utilizes block co-polymer morphology to create lines, space and hole patterns, facilitating for a more accurate control of the feature shapes. Then it uses surface interactions as well as polymer thermodynamics to finalize the formation of the final pattern shapes. [1]
Jimmy W. Mays is an American polymer scientist, academic, and author.He is a Professor Emeritus at the University of Tennessee. [1]Mays is most known for his works on polymer chemistry, block copolymers, and composite materials.
These kinetic effects, such as trapping in metastable states, slow coarsening kinetics, and pathway-dependent assembly, are often viewed as complications to be overcome in, for example, the formation of block copolymers. [12] [18] Amphiphile self-assembly is an essential bottom-up approach of fabricating advanced functional materials.
A global biosciences company is planning a $75 million expansion of its West Allis operations. Novonesis, formerly Chr. Hansen Inc., wants to build a two-story, 50,200-square-foot addition for new ...
The Hawthorne's West Allis location will be at 6202 W. Lincoln Ave. in West Allis. Contact Adrienne Davis at amdavis@gannett.com. Follow her on X at @AdriReportss. Erik Hanley contributed to this ...
Much progress had been reported on the use of PMMA-PS block copolymers to define sub-20 nm patterns by means of self-assembly, guided by surface topography (graphoepitaxy) and/or surface chemical patterning (chemoepitaxy). [71] The key benefit is the relatively simple processing, compared to multiple exposures or multiple depositions and etching.
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block copolymer: A copolymer that is a block polymer. In the constituent macromolecules of a block copolymer , adjacent blocks are constitutionally different, i.e. adjacent blocks comprise constitutional unit derived from different species of monomer or from the same species of monomer but with a different composition or sequence distribution ...