Nano-Fabrication Techniques using Block Copolymer Self-Assembly - Ricardo Ruiz


"Nano-Fabrication Techniques Using Block Copolymer Self Assembly"

 Ricardo Ruiz 
 Research Staff Member
 Hitachi Global Storage Technologies
 formerly with IBM T. J. Watson Research Center


Block-copolymer self-assembly has proven to be an attractive fabrication method for nanotechnology applications because of its ability to precisely define regular patterns with dimensions in the range of 10 to 100 nm. While the self-organizing patterns are ideal to reach dimensions not achievable by conventional lithography, the thermodynamic nature of the self-assembly process makes defect control one of the most compelling challenges to achieve the degree of ordering required in industrial applications. Most device applications in the electronics and storage industries require long-range ordering and a stringent control over defect formation. Therefore, understanding the dynamics of pattern formation in these materials is crucial to optimizing their performance. We use correlation length measurements of lamellar and cylindrical diblock copolymer domains to extract information about mechanisms of defect annihilation. We then use this information to engineer surfaces that influence the assembly process. In this way we eliminate defects in the critical device areas, while driving unavoidable imperfections to predefined, non-crucial regions.

Speaker Background:

Dr. Ruiz is currently a research staff member at Hitachi Global Storage Technologies. He was a visiting scientist at IBM T.J. Watson Research Center from Oct 2004 to Sept 2006. Prior to that, he was a postdoctoral fellow at the Cornell Center for Materials Research. He received his Ph.D. in Physics at Vanderbilt University in 2003. His research includes block copolymer self assembly, thin-film growth of organic and inorganic materials, structural correlations in thin-films and organic electronic devices.




Wednesday, July 25


Michael's Restaurant at Shoreline Park
2960 N Shoreline Blvd
Mountain View, CA  94043
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6 PM social hour 
7 PM dinner 
8 PM lecture


$30 with advance registration 
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5 PM, Monday, July 23

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chicken w/ herb butter 
vegetable Napoleon & grilled polenta

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