Reversed Micelle Structures in PFPE Lubricant Thin Films on Magnetic Disk Surface Observed by Non-Contact AFM
Reversed Micelle Structures in PFPE Lubricant Thin Films on Magnetic Disk Surface Observed by Non-Contact AFM
复制标题
非接触式 AFM 观察磁盘表面 PFPE 润滑剂薄膜的反胶束结构
DOI：
10.1080/10402000802192537
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发表时间：
2008
影响因子：
2.1
通讯作者：
N. Torita
中科院分区：
文献类型：
--
作者：
T. Nakakawaji;M. Amo;K. Iimura;Teiji Kato;N. Torita
用于硬盘表面润滑的PFPE润滑剂（Fomblin Z-dol）有两个羟基，在分子的两端各有一个，并在水面形成稳定的不溶性单层。在本研究中，通过调整润滑油分子的二维密度，将分子量分馏的PFPE润滑油单层从水面转移到固体衬底上，如亲水性硅片、金溅射云母和硬盘。采用超高压低温非接触式原子力显微镜观察了PFPE润滑油分子在固体表面的分子结构。在亲水性硅片表面，我们可以观察到单个润滑剂分子呈随机线圈球形。然而，在非极性金表面，我们证实了反向胶束结构的形成。在硬盘表面，我们检测到不同尺寸的PFPE润滑油的反胶束呈扁平的椭圆形。
PFPE lubricants (Fomblin Z-dol) for hard disk surface lubrication have two hydroxyl groups, one at each end of the molecules, and form stable insoluble monolayers at the water surface. In this study, molecular weight-fractionated PFPE lubricant monolayers were transferred from the water surface to solid substrates such as a hydrophilized silicon wafer, gold-sputtered mica, and a hard disk after adjusting the two-dimensional density of the lubricant molecules. The molecular structures of the PFPE lubricant molecules at the solid surfaces were observed by the cryogenic non-contact AFM under ultra-high vacuum. At the hydrophilic silicon wafer surface we could observe a single lubricant molecule in a random coil sphere shape. However, at the non-polar gold surface we confirmed the formation of reversed micelle structures. At the hard disk surface we detected various sizes of reversed micelles of PFPE lubricant in a flat oval shape.
影响因子：
2.1
作者：
S. Ogata;Y. Mitsuya;Hedong Zhang;K. Fukuzawa
通讯作者：
S. Ogata;Y. Mitsuya;Hedong Zhang;K. Fukuzawa