{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T05:22:47Z","timestamp":1784697767145,"version":"3.55.0"},"reference-count":51,"publisher":"AIP Publishing","issue":"14","funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DMR-1720530"],"award-info":[{"award-number":["DMR-1720530"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DMR16-07378"],"award-info":[{"award-number":["DMR16-07378"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000104","name":"National Aeronautics and Space\n                Administration","doi-asserted-by":"publisher","award":["NNX08AO0G"],"award-info":[{"award-number":["NNX08AO0G"]}],"id":[{"id":"10.13039\/100000104","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,4,14]]},"abstract":"<jats:p>Liquid structure and dynamics are experimentally investigated in colloidal suspensions with short-range depletion attraction. The colloidal fluid samples consist of hard-sphere colloidal particles suspended along with rodlike depletants based on surfactant micelles. The spheres have a range of surface chemistries, diameters, and packing fractions, and the rodlike micelle length depends on the temperature. Thus, the combination of hard-spheres and depletants generates a sample wherein short-range interparticle attraction can be temperature-tuned in situ. Video optical microscopy and particle tracking techniques are employed to measure particle trajectories from which structural and dynamical quantities are derived, including the particle pair correlation function [g(r)], mean square displacement, long-time diffusion coefficient, and the sample two-body excess entropy (S2). The samples with stronger short-range attractions exhibit more order, as characterized by g(r) and S2. The stronger short-range attractions are also observed to lead to slower long-time diffusion and more heterogeneous dynamics at intermediate time scales. Finally, the excess entropy scaling law prediction, i.e., the exponential relationship between two-body excess entropy and long-time diffusivity, is observed across the full range of samples.<\/jats:p>","DOI":"10.1063\/1.5091564","type":"journal-article","created":{"date-parts":[[2019,4,11]],"date-time":"2019-04-11T10:19:13Z","timestamp":1554977953000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":12,"title":["Excess entropy and long-time diffusion in colloidal fluids with short-range\n          interparticle attraction"],"prefix":"10.1063","volume":"150","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3220-0034","authenticated-orcid":false,"given":"Xiaoguang","family":"Ma","sequence":"first","affiliation":[{"name":"Department of Physics and Astronomy, University of Pennsylvania 1 , Philadelphia, Pennsylvania 19104,","place":["USA"]},{"name":"Complex Assemblies of Soft Matter, CNRS-Solvay-UPenn UMI 3254 2 , Bristol, Pennsylvania 19007-3624,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiachen","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, University of Pennsylvania 1 , Philadelphia, Pennsylvania 19104,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yikang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, University of Pennsylvania 1 , Philadelphia, Pennsylvania 19104,","place":["USA"]},{"name":"Department of Physics, Peking University 3 , Beijing,","place":["People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Piotr","family":"Habdas","sequence":"additional","affiliation":[{"name":"Department of Physics 4 , , Philadelphia, Pennsylvania 19131,","place":["USA"]},{"name":"Saint Joseph\u2019s University 4 , , Philadelphia, Pennsylvania 19131,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4744-2706","authenticated-orcid":false,"given":"A. 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