Thermophoretically induced flow field around a colloidal particle

摘要: A colloidal particle suspended in a fluid solvent with non-homogeneous temperature undergoes thermophoretic force. This force may translate into directed drift of the and source-dipole-like flow field around it. Alternatively, if colloid is fixed space, accompanying long-ranged. In this work, we provide first simulation study force-induced fields by particle-based mesoscopic method. The results are quantitatively consistent theoretical predictions obtained solving hydrodynamic equations. Based on these results, propose single-particle microfluidic pump without movable parts, which direction can be reversed. Furthermore, quantify long-range attraction between two particles near boundary wall induced field.