| Autor: |
Kazuya OKADA |
| Jazyk: |
japonština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 924, Pp 23-00111-23-00111 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2187-9761 |
| DOI: |
10.1299/transjsme.23-00111 |
| Popis: |
I have addressed a polydisperse suspension composed of cubic hematite particles in thermodynamic equilibrium. From the viewpoint of developing a surface modification technique using cubic hematite particles, I have investigated the local internal structures of cubic particle aggregates in a quasi-two-dimensional (quasi-2D) system. The cubic particles have a full three-dimensional (3D) rotational ability in a quasi-2D system. I have conducted quasi-2D Monte Carlo simulations in the situation of no applied magnetic field to investigate the dependence of the local internal structures of particle aggregates on the magnetic particle-particle interaction strength and the standard deviation in the particle size distribution. The results obtained here are summarized as follows. In a polydisperse system with a small standard deviation, cubic particles tend to aggregate to form closely-packed structures with an aligned face-to-face configuration as the magnetic particle-particle interaction strength is increased. In a polydisperse system with a large standard deviation, they tend to aggregate to form loosely-packed structures with unstable face-to-face contact as the magnetic interaction strength is increased. That is, an increase in the value of standard deviation leads to a decrease in the orientation order of the constituent particles in the aggregates. I understood that the orientation order of the cubic particles decreases sharply within a narrow range of the standard deviation in the particle size distribution. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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