Noncentral Forces in Crystals of Charged Colloids

by: D Reinke, H Stark, HH von Grünberg, Andrew B Schofield, G Maret, U Gasser

Physical Review Letters, Vol. 98, No. 3. (2007)

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Abstract

The elastic properties of fcc crystals consisting of charge stabilized colloidal particles are determined from real space imaging experiments using confocal microscopy. The normal modes and the force constants of the crystal are obtained from the fluctuations of the particles around their lattice sites using the equipartition theorem. We show that the Cauchy relation is not fulfilled and that only noncentral many-body forces can account for the elastic properties.

@article{citeulike:2563121, abstract = {The elastic properties of fcc crystals consisting of charge stabilized colloidal particles are determined from real space imaging experiments using confocal microscopy. The normal modes and the force constants of the crystal are obtained from the fluctuations of the particles around their lattice sites using the equipartition theorem. We show that the Cauchy relation is not fulfilled and that only noncentral many-body forces can account for the elastic properties.}, author = {Reinke, D. and Stark, H. and von Gr\"unberg, H. H. and Schofield, Andrew B. and Maret, G. and Gasser, U. }, citeulike-article-id = {2563121}, doi = {10.1103/PhysRevLett.98.038301}, journal = {Physical Review Letters}, keywords = {2007, charge, colloids}, number = {3}, posted-at = {2008-03-19 17:11:58}, priority = {2}, publisher = {APS}, title = {Noncentral Forces in Crystals of Charged Colloids}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000098000003038301000001\&idtype=cvips\&gifs=yes}, volume = {98}, year = {2007} }

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TY - JOUR ID - citeulike:2563121 L3 - citeulike-article-id:2563121 TI - Noncentral Forces in Crystals of Charged Colloids JF - Physical Review Letters VL - 98 IS - 3 PB - APS N2 - The elastic properties of fcc crystals consisting of charge stabilized colloidal particles are determined from real space imaging experiments using confocal microscopy. The normal modes and the force constants of the crystal are obtained from the fluctuations of the particles around their lattice sites using the equipartition theorem. We show that the Cauchy relation is not fulfilled and that only noncentral many-body forces can account for the elastic properties. KW - 2007 KW - charge KW - colloids AU - Reinke, D AU - Stark, H AU - von Gr\"unberg, HH AU - Schofield, Andrew AU - Maret, G AU - Gasser, U PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000003038301000001&idtype=cvips&gifs=yes ER -

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