2020 Fiscal Year Research-status Report
Effect of patchy particle designs on the bulk properties of the self-assembled structures
| Project/Area Number |
20K14437
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Lieu Uyen 国立研究開発法人産業技術総合研究所, 材料・化学領域, 産総研特別研究員 (00807042)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Keywords | patchy particle / self-assembly / curvature / topological defects |
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| Outline of Annual Research Achievements |
In order to illustrate the self-assembly of patchy particles, a model estimating the pairwise interaction of different types of patchy particle are proposed. The Brownian dynamics simulation of the colloidal patchy particles on either two-dimensional, three-dimensional, and curved surface is constructed. We have applied the model above to investigate the effect of curvature on the assembly of patchy particle. This study particularly deals with the relation between patchy particle design, the self-assembled structure, and the curved surface on which the particles are confined to. It is known that a perfect lattice is possible to obtain on a flat space but impossible on a curved surface. Here we consider the dipole patchy particles which are described by spherical harmonic Y10 and confined to a spherical surface, then investigate the assembled structure, how and why topological defects appear. We have found interesting results on controlling the defect. To our knowledge, this is a pioneer research that introduce topological defects on a sphere by the self-assembly of patchy particles.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The simulation and analysis of structure prepared. Study on the relation of patchy particle design and assembled structure is straightforward.
As for the relation of structure and properties, the estimation of bulk properties such as viscosity and optical property needs further development.
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| Strategy for Future Research Activity |
The research will be promoted via research website, domestic and international workshops and conferences.
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| Causes of Carryover |
Due to Covid-19, many conferences were cancelled. Such amount will be used for the conferences and cloud computing in the next year.
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