2018/09/21 by Gaurav P. Shrivastav, Shrivastav, Gaurav P., Sabine H. L. Klapp +1
Computer Science · Engineering · Materials Science · #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Liquid Crystal Research Advancements #Nonlinear Dynamics and Pattern Formation #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.1809.08288
openalex publication_date 2018/09/21 · openalex created_date 2022/08/03 · openalex updated_date 2026/07/28
We report an extensive molecular dynamics study on the translational dynamics\nof a hybrid system composed of dipolar soft spheres (DSS), representing\nferromagnetic particles, suspended in a liquid crystal (LC) matrix. We observe\nthat the LC matrix strongly modifies the dynamics of the DSS. In the isotropic\nregime, the DSS show a crossover from subdiffusive to normal diffusive behavior\nat long times, with an increase of the subdiffusive regime as the dipolar\ncoupling strength is increased. In the nematic regime, the LC matrix, due to\ncollective reorientation of LC particles, imposes a cylindrical confinement on\nthe DSS chains. This leads to a diffusive dynamics of DSS along the nematic\ndirector and a subdiffusive dynamics (with an exponent \∼ 0.5) in the\nperpendicular direction. The confinement provided by the LC matrix is also\nreflected by oscillatory behavior of the components of the velocity\nautocorrelation function of the DSS in the nematic phase.\n