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0956131_Shpyrko

Time-resolved X-ray Studies of Morphological Instabilities in Nanoimprinted Polymer Patterns Oleg G. Shpyrko, University of California-San Diego, DMR 0956131.

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0956131_Shpyrko

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  1. Time-resolved X-ray Studies of Morphological Instabilities in Nanoimprinted Polymer PatternsOleg G. Shpyrko, University of California-San Diego, DMR 0956131 We have performed time-resolved Grazing Incidence Small Angle X-ray Scattering (GISAXS) measurements to investigate the onset of the lateral instabilities in lithographically nanoimprinted polystyrene patterns. Nanoimprint lithography is the novel approach that allows fast and inexpensive way of synthesizing novel nanoscale materials and devices. Our density profile modeling of time resolved GISAXS measurements allows to obtain a global view of morphological instabilities that occur in polymer nanostructures during thermal annealing, such as zig-zag capillary instability of the polymer grating structures. These findings are important in context of both fundamental understanding of dynamics and morphology of soft materials, as well as industrial applications that utilize nanoimprint lithography approach.

  2. Time-resolved X-ray Studies of Morphological Instabilities in Nanoimprinted Polymer PatternsOleg G. Shpyrko, University of California-San Diego, DMR 0956131 Over the past year the PI organized Young Physicist Program (YPP) at UC San Diego, an outreach program that brings middle- and high-school students from Greater San Diego area to Physics Department UC San Diego for popular science lectures, laboratory tours and hands-on demo experiments, held once a month. The 2009-2010 YPP culminated in liquid nitrogen ice cream party (photo on the left) that was extremely popular among the students. The NSF award is currently supporting two female UCSD graduate students, Yeling Dai and Leandra Bourcheron. Several undergraduate students have performed research in our group: Veronica Burnett, Lluvia Rodriguez, Anache Bandari and Magnuz Heinz. Our group is actively collaborating with groups from NIST, PNNL and Univ. of Chicago. Our students are involved in development of novel techniques and instruments at several beamlines at Advanced Light Source at Argonne National Lab.

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