To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. Molecular motions of individual cyclohexane molecules in the bulk lubricant within a time period of 100 ps Squeezing and stick–slip friction behaviors of lubricants in boundary lubrication Rong-Guang Xu, and Yongsheng Leng PNAS. 2018. 115:6560-6565 DOI: 10.1073/pnas.1805569115 Download Original Video Browse All Videos »