Forces between single pairs of charged colloids in aqueous salt solutions

by: C Gutsche, UF Keyser, K Kegler, F Kremer, P Linse

Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 76, No. 3. (2007)

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摘要

Forces between single pairs of negatively charged micrometer-sized colloids in aqueous solutions of monovalent, divalent, or trivalent counter-ions at varying concentrations have been measured by employing optical tweezers. The experimental data have been analyzed by using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and a numerical solution of the Poisson-Boltzmann (PB) equation. With monovalent counterions, the data are well described by the DLVO and PB theories, suggesting that the DLVO theory is adequate to describe the colloidal forces at these conditions. At higher counter-ion valence, the approximations within the two theories become evident.

@article{citeulike:1719295, abstract = {Forces between single pairs of negatively charged micrometer-sized colloids in aqueous solutions of monovalent, divalent, or trivalent counter-ions at varying concentrations have been measured by employing optical tweezers. The experimental data have been analyzed by using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and a numerical solution of the Poisson-Boltzmann (PB) equation. With monovalent counterions, the data are well described by the DLVO and PB theories, suggesting that the DLVO theory is adequate to describe the colloidal forces at these conditions. At higher counter-ion valence, the approximations within the two theories become evident.}, author = {Gutsche, C. and Keyser, U. F. and Kegler, K. and Kremer, F. and Linse, P. }, citeulike-article-id = {1719295}, doi = {10.1103/PhysRevE.76.031403}, journal = {Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)}, keywords = {2007, charge, colloids, cool, opticaltweezer, pre, technique}, number = {3}, posted-at = {2008-06-10 22:47:49}, priority = {2}, publisher = {APS}, title = {Forces between single pairs of charged colloids in aqueous salt solutions}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLEEE8000076000003031403000001\&idtype=cvips\&gifs=yes}, volume = {76}, year = {2007} }

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TY - JOUR ID - citeulike:1719295 L3 - citeulike-article-id:1719295 TI - Forces between single pairs of charged colloids in aqueous salt solutions JF - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) VL - 76 IS - 3 PB - APS N2 - Forces between single pairs of negatively charged micrometer-sized colloids in aqueous solutions of monovalent, divalent, or trivalent counter-ions at varying concentrations have been measured by employing optical tweezers. The experimental data have been analyzed by using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and a numerical solution of the Poisson-Boltzmann (PB) equation. With monovalent counterions, the data are well described by the DLVO and PB theories, suggesting that the DLVO theory is adequate to describe the colloidal forces at these conditions. At higher counter-ion valence, the approximations within the two theories become evident. KW - 2007 KW - charge KW - colloids KW - cool KW - opticaltweezer KW - pre KW - technique AU - Gutsche, C AU - Keyser, UF AU - Kegler, K AU - Kremer, F AU - Linse, P PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000076000003031403000001&idtype=cvips&gifs=yes ER -

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