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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2408.11569 |
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| _version_ | 1866914956594642944 |
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| author | Mayarani, Muraleedharapai Laurent, Justine Lenz, Martin Roure, Olivia du Heuvingh, Julien |
| author_facet | Mayarani, Muraleedharapai Laurent, Justine Lenz, Martin Roure, Olivia du Heuvingh, Julien |
| contents | Self-assembly of colloidal particles is a promising avenue to control the shape and dynamics of larger aggregates. However, achieving the necessary fine control over the dynamics and specificity of the bonds between such particles remains a challenge. Here we demonstrate such control in bonds mediated by depletion interactions between anisotropic colloids that we 3D-print in the shape of half disks with sub-micron resolution. When brought together by diffusion, the particles interact in different configurations but the interaction through the flat faces is by far the longest-lasting. All bonds are flexible and transient, and we demonstrate control over their life time through the depletant concentration in quantitative agreement with a simple physical model. This basic design could be extended to manufacture particles with multiple binding sites to engineer directional assembly with multiple particles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_11569 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Specific yet transient bonds between anisotropic colloids Mayarani, Muraleedharapai Laurent, Justine Lenz, Martin Roure, Olivia du Heuvingh, Julien Soft Condensed Matter Self-assembly of colloidal particles is a promising avenue to control the shape and dynamics of larger aggregates. However, achieving the necessary fine control over the dynamics and specificity of the bonds between such particles remains a challenge. Here we demonstrate such control in bonds mediated by depletion interactions between anisotropic colloids that we 3D-print in the shape of half disks with sub-micron resolution. When brought together by diffusion, the particles interact in different configurations but the interaction through the flat faces is by far the longest-lasting. All bonds are flexible and transient, and we demonstrate control over their life time through the depletant concentration in quantitative agreement with a simple physical model. This basic design could be extended to manufacture particles with multiple binding sites to engineer directional assembly with multiple particles. |
| title | Specific yet transient bonds between anisotropic colloids |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2408.11569 |