基于改进椭圆偏振显微镜的纳米润滑薄膜动态观测
发布时间：2018-11-12 11:01
【摘要】：随着硬盘(HDDs)面记录密度的增加,读写数据时磁头的飞行高度不断降低。磁头与磁片表面液体润滑膜的接触,会在表面形成半月板,或润滑剂回升,造成润滑剂转移。观测液体润滑膜的转移过程以及其在磁头上的动态变化特性,是研究润滑剂性能的重要方面。改进基于垂直物镜的椭圆偏振显微镜(VEM),提出一种旋转起偏器的方法获得膜厚与被测光强的线性关系,实现磁头表面润滑膜动态观察,并对现有显微镜尤其是照明系统进行改进。实验以非极性全氟聚醚(PFPE)润滑剂Z03覆盖的磁头为样品对椭圆偏振显微镜进行标定。以极性PFPE润滑剂Zdol4000作为样品,对其在磁头表面的去湿现象进行观察。结果证明显微镜横向分辨力约0.36μm。该方法可用于纳米级液体薄膜的可视化观测。
[Abstract]:With the increase of (HDDs) recording density, the flying height of magnetic head decreases continuously when reading and writing data. The contact between the magnetic head and the liquid lubrication film on the surface of the magnetic disk will form a meniscus on the surface, or the lubricant will rise again, resulting in the transfer of the lubricant. It is important to observe the transfer process of liquid lubricating film and its dynamic change on magnetic head. An improved elliptical polarization microscope (VEM),) based on vertical objective lens is proposed to obtain the linear relationship between film thickness and measured intensity by using a rotating polarizer to realize the dynamic observation of lubricated film on the magnetic head surface. The existing microscope, especially the illumination system, is improved. The elliptical polarization microscope was calibrated with the magnetic head covered by nonpolar perfluoropolyether (PFPE) lubricant Z03. The dehumidification of polar PFPE lubricant Zdol4000 on the surface of magnetic head was observed. The results show that the transverse resolution of the microscope is about 0.36 渭 m. This method can be used to visualize the liquid film in nanometer scale.
【作者单位】： 南京信息工程大学信息与控制学院;江苏省大气环境与装备技术协同创新中心;江苏省气象能源利用与控制工程技术研究中心;
【基金】：国家自然科学基金(61605083) 江苏省自然科学基金(BK20130989) 南京信息工程大学大学引进人才科研启动项目(2013R106)
【分类号】：TH742;TP333
，
本文编号：2326915
[Abstract]:With the increase of (HDDs) recording density, the flying height of magnetic head decreases continuously when reading and writing data. The contact between the magnetic head and the liquid lubrication film on the surface of the magnetic disk will form a meniscus on the surface, or the lubricant will rise again, resulting in the transfer of the lubricant. It is important to observe the transfer process of liquid lubricating film and its dynamic change on magnetic head. An improved elliptical polarization microscope (VEM),) based on vertical objective lens is proposed to obtain the linear relationship between film thickness and measured intensity by using a rotating polarizer to realize the dynamic observation of lubricated film on the magnetic head surface. The existing microscope, especially the illumination system, is improved. The elliptical polarization microscope was calibrated with the magnetic head covered by nonpolar perfluoropolyether (PFPE) lubricant Z03. The dehumidification of polar PFPE lubricant Zdol4000 on the surface of magnetic head was observed. The results show that the transverse resolution of the microscope is about 0.36 渭 m. This method can be used to visualize the liquid film in nanometer scale.
【作者单位】： 南京信息工程大学信息与控制学院;江苏省大气环境与装备技术协同创新中心;江苏省气象能源利用与控制工程技术研究中心;
【基金】：国家自然科学基金(61605083) 江苏省自然科学基金(BK20130989) 南京信息工程大学大学引进人才科研启动项目(2013R106)
【分类号】：TH742;TP333
，
本文编号：2326915
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