Abstract
We designed the new method to measure tribological properties of molecularly thin lubricant film used for head disk interface of hard disk drive system. It is highly required to make more detailed investigation into tribological properties of lubes especially for high speed relative movement with nano-scale surface separation that is most similar state of real head disk interface. Using ball-end optical fiber as a probe we can measure shear force between the probe and the sample moving relatively at high frequency and controlled nano-scale surface separation confining polymer lubricant. We showed 10nN force resolution is possible with our new method.
