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Core-shell particles in rotating electric and magnetic fields: Designing tunable interactions via particle
Kirill A Komarov1, Vladimir N Mantsevich1, Stanislav O Yurchenko1
1Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005 Moscow, Russia.
The Journal of Chemical Physics
|September 2, 2021
Summary
Engineering the internal structure of colloidal particles allows for tunable interactions, crucial for self-assembly and soft matter studies. This research reveals novel interaction possibilities with core-shell particles in electric fields.
Area of Science:
- Soft Matter Physics
- Materials Science
- Colloidal Science
Background:
- Tunable interactions in colloidal systems are vital for self-assembly and understanding soft matter phenomena.
- The influence of internal colloidal particle structure on tunable interactions remains under-explored.
Purpose of the Study:
- To investigate tunable interactions of core-shell colloidal particles in rotating electric fields.
- To explore how internal particle structure engineering impacts colloidal interactions.
Main Methods:
- Generalized integral theory to study core-shell particle interactions.
- Analyzed interactions for homogeneous cores (layered) and cores with nano-inclusions.
- Investigated interactions under rotating electric fields.
Main Results:
- Demonstrated that internal structure engineering effectively designs tunable interactions.
- Achieved attractive pairwise and tunable three-body interactions (positive/negative).
- Observed pairwise repulsion with attractive three-body interactions for the first time in core-shell systems.
Conclusions:
- Core-shell particle structure offers unprecedented control over colloidal interactions.
- Findings are analogous to charged colloids and relevant for modeling globular proteins.
- Methods and findings are generalizable to magnetic and 3D colloidal systems.
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