【摘要】 根据磁性液体的表观密度随磁场梯度变化的特性,自制了"磁性液体纳米磁性颗粒空间分布的演示实验装置"。利用此实验装置,可以演示不同密度的非磁性综合体,在磁场增强的情况下,向磁场梯度小的位置运动的过程,直观、定性地反映了在磁场梯度作用下纳米磁性颗粒的空间分布情况,激发学生深入研究的兴趣。使用特斯拉计测量了线圈周围的磁场分布情况,研究实验过程中产生的现象。更多还原

【Abstract】 According to the characteristic that the apparent density of magnetic fluid is varied with magnetic field gradient,the demonstrative experiment device of spatial distribution about nanometer magnetic particles in magnetic fluid is developed by ourselves.The whole course that the nonmagnetic syntheses move to the less magnetic field gradient when magnetic field is increased,can be demonstrated by the experiment device,and the spatial distribution of nanometer magnetic particles in magnetic field gradient is imaged intuitively and quantificationally.The lucubrating interest of students is inspired largely in the demonstrative process.In order to study the experimental phenomena,the distribution of magnetic field around the coils was measured with Tesla apparatus.更多还原