Magneto-induced stress enhancing effect in a colloidal suspension of paramagnetic and superparamagnetic particles dispersed in a ferrofluid medium.
The magneto-induced stress and relative microstructure in a colloidal suspension of paramagnetic and superparamagnetic particles dispersed in a ferrofluid medium is studied using particle-level dynamics simulation. It shows that the stress perpendicular to the direction of an external uniaxial magnetic field can be strongly enhanced by increasing the ratio of paramagnetic particles to approaching that of superparamagnetic particles. The magnetic field-induced net-like or embedded chain-like microstructures formed by paramagnetic and superparamagnetic particles contribute to this stress enhancing effect.
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China. gongxl@ustc.edu.cn xuansh@ustc.edu.cn.
Taixiang
T
Liu
Xinglong
X
Gong
Yangguang
Y
Xu
Shouhu
S
Xuan
D055598:Chemical Phenomena; D003102:Colloids / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D060526:Magnetic Fields; D058185:Magnetite Nanoparticles / Q000737:chemistry; D008962:Models, Theoretical; D010316:Particle Size; D012996:Solutions / Q000737:chemistry*
D003102:Colloids; D058185:Magnetite Nanoparticles; D012996:Solutions; D007501:Iron