| Computational Study of Self Assembly of Nanoparticles with Anisotropic Interactions | ||
| Zhenli Zhang, Department of Chemical Engineering, University of Michigan, 2300 Hayward Road, 3074 Dow Building, Ann Arbor, MI 48109, Zhiyong Tang, Department of Chemical Engineering, University of Michigan, 2300 Hayward, 3074 HH Dow Bldg., Ann Arbor, MI 48109, Nicholas A. Kotov, Department of Chemical Engineering, Department of Materials Science and Engineering, Department of Biomedical Engineering, University of Michigan, 2300 Hayward, HH Dow Building #3074, Ann Arbor, MI 49109 and Sharon C. Glotzer, Department of Chemical Engineering, Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109-2136 Self assembly of nanoparticles into one-dimensional, two-dimensional or three-dimensional assemblies has been of substantial interest due to their collective optical, electrical and magnetic properties. We developed a simplified particle-based model that properly includes the anisotropic interparticle interactions arising from the nanoparticle shape as well as electrostatic and directional van der Waals interactions. We applied this model to a system of ligand-stabilized semiconductor nanoparticles in solution, and carried out molecular simulations that successfully predict the two-dimensional assembly found in experiments. Our simulations demonstrate that nanoparticles with anisotropic interactions can be viewed as patchy particles that may serve as programmable building blocks for desired nanoparticle assemblies. Extended Abstract Status: Not Uploaded | ||