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DTSTAMP:20110922T211503Z
DTSTART;TZID=America/Los_Angeles:20111202T140000
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TRANSP:OPAQUE
SUMMARY:Biomolecular Architectures and Systems for Nanoscience Engineering: Nano Seminar Series
UID:47476-ucb-events-calendar@berkeley.edu
ORGANIZER;CN="UC Berkeley Calendar Network":
LOCATION:390 Hearst Memorial Mining Building
DESCRIPTION:Prof. Jennifer Cha\, UC San Diego\, NanoEngineering\n\nDespite the great potential of nanomaterials in electronic and photonic applications\, their incorporation into functional devices will require the combination of top-down lithographic large-area patterning with the high resolution and chemical precision afforded by bottom-up self-assembly. \n\nTo address some of the challenges\, there have been significant efforts to use “bottom-up” or self-assembly approaches for patterning or organizing nanoscale materials. \n\nThe first half of this talk will show our recent efforts in directing the placement of single stranded DNA and DNA templates on several different substrates that have been patterned by lithography. A variety of substrates have been generated by optical and e-beam lithography and these have been used to produce highly parallel arrays of meso- and macroscale DNA scaffolds and DNA oligonucleotides in a single step. Furthermore\, these DNA templates encode multiple nanometer recognition sites that can be further used to generate hierarchical assemblies of both organic and inorganic nanoscale materials. \n\nFor example\, DNA arrays have recently been used to generate highly ordered\, near-perfect metal nanocrystal superlattices at specific sites on a substrate through simple adsorption and annealing procedures that also demonstrate either hexagonal or cubic packing. \n\nIn addition to the use of DNA interactions\, the second half of the talk will highlight our research efforts in controlling interparticle associations by solvent or temperature to generate large area platelets of semiconductor nanorods in solution that can easily be deposited as an ink onto substrates to rapidly generate macroscopic arrays of normally oriented nanorods from the substrate.
URL:http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=47476&view=preview
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