Dynamics of magnetic assembly of binary colloidal structures Nogueras-Lara, Francisco Rodríguez Arco, Laura López López, Modesto Torcuato Dynamics of magnetic nanoparticles Self-assembly Colloids "This is an author-created, un-copyedited version of an article published in Europhysics Letters. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1209/0295-5075/111/37002." Magnetic field (MF)-directed assembly of colloidal particles provides a step towards the bottom-up manufacturing of smart materials whose properties can be precisely modulated by non-contact forces. Here, we study the MF-directed assembly in binary colloids made up of strong ferromagnetic and diamagnetic microparticles dispersed in ferrofluids. We present observations of the aggregation of pairs and small groups of particles to build equilibrium assemblies. We also develop a theoretical model capable of solving the aggregation dynamics and predicting the particle trajectories, a key factor to understand the physics governing the MF-directed assembly. 2015-09-30T06:23:03Z 2015-09-30T06:23:03Z 2015-08-24 info:eu-repo/semantics/article Nogueras-Lara, F.; Rodríguez-Arco, L.; López-López, M.T. Dynamics of magnetic assembly of binary colloidal structures. Europhysics Letters, 111(3): 37002 (2015). [http://hdl.handle.net/10481/37848] 0295-5075 http://hdl.handle.net/10481/37848 10.1209/0295-5075/111/37002 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/embargoedAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Institute of Physics (IOP)