The use of amorphous ferromagnetic microwires has potential for applications in biomedicine and biophysics. Microwire arrays create magnetic fields that are characterized by strong spatial gradients. A system of ferromagnetic microwires with magnetizations across the diameter may efficiently accumulate paramagnetic particles along the wire due to forced diffusion. For typical system parameters, the particles concentration at the wire surface increases more than twice for a characteristic time of 30 s. A pair of closely spaced microwires with diametric magnetizations (referred to as a dipole pair) yields a unique potential landscape with a two-dimensional minimum. The possibility of levitation of diamagnetic particles just above the dipole pair array was numerically demonstrated.

中文翻译：

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铁磁微丝系统作为磁泳的高梯度磁场源

非晶铁磁微丝的使用在生物医学和生物物理学方面具有应用潜力。微线阵列产生以强空间梯度为特征的磁场。由于强制扩散，具有跨越直径的磁化的铁磁微线系统可以沿着线有效地积累顺磁性颗粒。对于典型的系统参数，金属丝表面的粒子浓度在 30 秒的特征时间内增加了两倍以上。一对具有径向磁化强度的紧密间隔的微线（称为偶极对）产生具有二维最小值的独特潜在景观。数值证明了在偶极对阵列上方悬浮抗磁性粒子的可能性。