标题： 磁场引起的接触角滞后驱动浮游聚烯烃筏片 显示英文标题

标题： Magnetic Field Inspired Contact Angle Hysteresis Drives Floating Polyolefin Rafts

摘要： 浮性聚合物（聚烯烃）筏在稳定磁场作用下发生位移，已有报道。 该现象是由于重力使水/蒸汽界面变形、接触角滞后以及液体支撑的抗磁性相互作用所致。 磁场（约0.06 T）使水/蒸汽界面变形，并影响界面表观接触角。 这种变形产生了推进力，导致聚合物筏发生位移。 筏质心的位移速度被记录下来。 该效应与磁场影响的接触角滞后有关，从而实现了界面表观接触角的变化。 提出了该过程的半定量模型。 显示英文摘要

摘要： Displacement of floating polymer (polyolefin) rafts by steady magnetic field is reported. The effect is due to the interplay of gravity deforming the water/vapor interface, contact angle hysteresis and diamagnetic properties of the liquid support. Magnetic field (ca. 0.06 T) deformed the water/vapor interface and impacted the interfacial apparent contact angle. This deformation gave rise to the propulsion force, displacing the polymer raft. The velocity of displacement of the center of mass of rafts was registered. The effect is related to the contact angle hysteresis affected by the magnetic field, enabling the change in the apparent interfacial contact angle. The semi-quantitative model of the process is suggested