Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.e1068g&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #E1.068
Physics
Scientific paper
The formation of defect structures on the surfaces of colloids immersed in uniformly aligned nematic liquid crystals is a phenomenon which, if better understood, could lead to advances in micro and nanoscale colloidal self assembly techniques. In this study, three photon fluorescence microscopy (3PFM) was used in conjunction with holographic optical tweezers (HOT) in order to stabilize and image surface defects on English alphabet letter shaped colloids suspended in a uniformly aligned nematic liquid crystal. This data made it possible to characterize the location and strength of these defects for a robust variety of shapes. A relationship between particle shape and angle of orientation vs the host nematic was also observed.
Giller Julian
Lapointe Clayton P.
Smalyukh Ivan I.
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