18 October 2004 Three- and four-body interactions in colloidal systems
Author Affiliations +
Three-body and four-body interactions have been directly measured in a colloidal system comprised of three (or four) charged colloidal particles. Two of the particles have been confined by means of a scanned laser tweezers to a line-shaped optical trap where they diffused due to thermal fluctuations. By means of an additional focused optical trap a third particle has been approached and attractive three-body interactions have been observed. These observations are in qualitative agreement with additionally performed nonlinear Poissson-Boltzmann calculations. Two configurations of four particles have been studied experimentally as well and in both cases a repulsive four-body interaction term has been observed.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jure Dobnikar, Jure Dobnikar, Matthias Brunner, Matthias Brunner, Jorg Baumgartl, Jorg Baumgartl, Clemens Bechinger, Clemens Bechinger, Hans-Hennig von Gruenberg, Hans-Hennig von Gruenberg, } "Three- and four-body interactions in colloidal systems", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.554610; https://doi.org/10.1117/12.554610


Measurement of interparticle force between nematic colloids
Proceedings of SPIE (September 15 2014)
Insulation Directions For High Power Space Systems
Proceedings of SPIE (April 05 1988)
Cooling optically trapped particles
Proceedings of SPIE (October 09 2012)
New method of synthesis of SiO2 spheres used as raw...
Proceedings of SPIE (August 04 1997)

Back to Top