Experimental Observation of Structural Crossover in Binary Mixtures of Colloidal Hard Spheres Export

@article{bechinger07, abstract = {Using confocal microscopy, we investigate the structure of binary mixtures of colloidal hard spheres with size ratio q=0.61. As a function of the packing fraction of the two particle species, we observe a marked change of the dominant wavelength in the pair-correlation function. This behavior is in excellent agreement with a recently predicted structural crossover in such mixtures. In addition, the repercussions of structural crossover on the real-space structure of a binary fluid are analyzed. We suggest a relation between crossover and the lateral extension of networks containing only equally-sized particles that are connected by nearest-neighbor bonds. This is supported by Monte\ Carlo simulations which are performed at different packing fractions and size ratios.}, author = {Baumgartl, J\"org and Dullens, Roel P. A. and Dijkstra, Marjolein and Roth, Roland and Bechinger, Clemens}, citeulike-article-id = {2553128}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000019198303000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v98/e198303}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.98.198303}, doi = {10.1103/PhysRevLett.98.198303}, journal = {Physical Review Letters}, keywords = {binary, confocal, structure}, number = {19}, posted-at = {2008-07-29 22:58:23}, priority = {0}, publisher = {APS}, title = {Experimental Observation of Structural Crossover in Binary Mixtures of Colloidal Hard Spheres}, url = {http://dx.doi.org/10.1103/PhysRevLett.98.198303}, volume = {98}, year = {2007} }

TY - JOUR ID - bechinger07 L3 - citeulike-article-id:2553128 N2 - Using confocal microscopy, we investigate the structure of binary mixtures of colloidal hard spheres with size ratio q=0.61. As a function of the packing fraction of the two particle species, we observe a marked change of the dominant wavelength in the pair-correlation function. This behavior is in excellent agreement with a recently predicted structural crossover in such mixtures. In addition, the repercussions of structural crossover on the real-space structure of a binary fluid are analyzed. We suggest a relation between crossover and the lateral extension of networks containing only equally-sized particles that are connected by nearest-neighbor bonds. This is supported by Monte Carlo simulations which are performed at different packing fractions and size ratios. IS - 19 JF - Physical Review Letters TI - Experimental Observation of Structural Crossover in Binary Mixtures of Colloidal Hard Spheres PB - APS VL - 98 KW - binary KW - confocal KW - structure AU - Baumgartl, J\"org AU - Dullens, Roel AU - Dijkstra, Marjolein AU - Roth, Roland AU - Bechinger, Clemens PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevLett.98.198303 ER -