Abstract
In this report, using Monte Carlo simulations, we investigate the cluster structure of colloidal dumbbells with asymmetric properties in sizes via emulsion droplet evaporation. By tuning the diameter ratio of two spherical colloids, \(q=\sigma _{l}/\sigma _{s}\) with \(\sigma _{l}\) the diameter of the larger sphere and \(\sigma _{s}\) the diameter of the smaller sphere, we obtain clusters with both the compact and open structures. For \(q<1.2\), we found a unique category of cluster isomers that minimize the second moment of the mass distribution. The uniqueness is lost when q ranges from 1.2 to 1.7. A further increase in the size ratio leads to a variety of different isomers with more complex configurations.
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This work was funded by Vietnamese National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.02-2017.328.
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Pham-Van, H., Luc-Huy, H. & Nguyen-Minh, T. Template–assisted assembly of asymmetric colloidal dumbbells into desirable cluster structures. Colloid Polym Sci 296, 1387–1394 (2018). https://doi.org/10.1007/s00396-018-4360-5
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DOI: https://doi.org/10.1007/s00396-018-4360-5