Simultaneously Measuring Lateral and Vertical Forces with Accurate Gap Control for Clarifying Lubrication Phenomena at Nanometer Gap
Simultaneously Measuring Lateral and Vertical Forces with Accurate Gap Control for Clarifying Lubrication Phenomena at Nanometer Gap
复制标题
通过精确的间隙控制同时测量横向力和垂直力，以阐明纳米间隙的润滑现象
DOI：
10.1007/s11249-009-9545-0
复制
发表时间：
2010
影响因子：
3.2
通讯作者：
Hedong Zhang
中科院分区：
文献类型：
--
作者：
K. Fukuzawa;K. Hayakawa;Noriki Matsumura;S. Itoh;Hedong Zhang
提出了一种同时测量垂直力和横向力的新方法，该方法具有高灵敏度和精确的间隙控制。它结合了用于垂直力测量的双端音叉谐振器和用于横向力测量的光纤探头。成功地实现了几十纳米牛顿的高力灵敏度，并实现了小于1nm的精确间隙控制。同时使用这种新的方法测量表明，粘弹性增加的滑动间隙的减少。此外，该方法首次揭示了由于在小间隙处的限制，由楔形效应产生的润滑剂压力可以增加，即使润滑剂压力如此之低以至于由于压力而导致的粘度上升小得多。这种方法有望用于澄清纳米滑动间隙处的润滑现象，由于测量困难，这些润滑现象尚未完全理解。
A novel method for simultaneous measurement of vertical and lateral forces with high sensitivity and accurate gap control is presented. It combines a double-ended tuning fork resonator for vertical force measurement with an optical fiber probe for lateral force measurement. High force sensitivity of several tens of nano Newons with accurate gap control of less than 1 nm was successfully attained. Simultaneous measurement using this novel method revealed that viscoelasticity increased with decrease of the sliding gap. Moreover, the method first revealed that the lubricant pressure generated by the wedge effect can increase due to the confinement at small gaps, even if the lubricant pressure is so low that the viscosity rise due to the pressure is much small. This method is expected to be useful for clarifying the lubrication phenomena at nanometer sliding gaps, which are not yet fully understood due to the difficulty of measurement.
使用微加工凹槽对固体表面上的分子薄聚合物液膜进行分离压力测量
DOI：
--
发表时间：
2004
期刊：
Journal of Chemical Physics Vol.121・No.9
影响因子：
--
作者：
K.Fukuzawa;J.Kawamura;T.Deguchi;H.Zhang;Y.Mitsuya
通讯作者：
Y.Mitsuya