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Magnetic field-driven assembly and reconfiguration of multicomponent supraparticles.

ABSTRACT: Suprastructures at the colloidal scale must be assembled with precise control over local interactions to accurately mimic biological complexes. The toughest design requirements include breaking the symmetry of assembly in a simple and reversible fashion to unlock functions and properties so far limited to living matter. We demonstrate a simple experimental technique to program magnetic field-induced interactions between metallodielectric patchy particles and isotropic, nonmagnetic "satellite" particles. By controlling the connectivity, composition, and distribution of building blocks, we show the assembly of three-dimensional, multicomponent supraparticles that can dynamically reconfigure in response to change in external field strength. The local arrangement of building blocks and their reconfigurability are governed by a balance of attraction and repulsion between oppositely polarized domains, which we illustrate theoretically and tune experimentally. Tunable, bulk assembly of colloidal matter with predefined symmetry provides a platform to design functional microstructured materials with preprogrammable physical and chemical properties.

SUBMITTER: Al Harraq A

PROVIDER: S-EPMC7209988 | biostudies-literature |

REPOSITORIES: biostudies-literature

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