Magnetorheological response of homogeneous and Janus iron-oxide coated silica particles
Bibliographic record
Abstract
The flow behavior of magnetic suspensions made of nonmagnetic spherical particles surface-decorated by a magnetic shell is investigated in this study. Suspensions of SiO2@Fe3O4 homogeneous particles (HPs) (the so-called core/shell particles) and SiO2@Fe3O4 Janus particles (JPs) were compared in terms of their rheological properties. Particle surface characteristics and the contribution of anisotropic magnetization of JPs to interparticle interactions were investigated for the first time. Higher shear viscosity, shear stress, and viscoelastic modulus were obtained in magnetic HP suspensions. However, upon elimination of the saturation magnetization effect of particles, higher shear viscosity was achieved in magnetic JP suspensions due to the more significant contribution of the contact force in the JP systems. The dependence of the magnetorheological (MR) properties on the magnetic particle concentration and magnetic field strength was also evaluated for HP and JP suspensions. These two magnetic systems deviate from conventional MR fluids because the magnetization is generated by the magnetic shell instead of the core of the particles. These observations provide new insights and opportunities for designing MR fluids.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".