EMSFC (IMAGE) Kanazawa University Caption EMSFC under various experimental conditions. The target material was polypropylene. A polypropylene object was grasped by fluid fingertips shown in Figure 1, and the equivalent maximum-static friction coefficient (EMSFC)*2) was measured to reveal the effect of the lubricant. (i) dry: (ii-1) dry, lubricant injected before grasping: (ii-2) dry, lubricant injected after grasping: (iii) wet with water: (iv-1) wet with water, lubricant injected before grasping: (iv-2) wet with water, lubricant injected after grasping: (v) oily with chain saw oil: (vi-1) oily with chain saw oil, lubricant injected before grasping: (vi-2) oily with chain saw oil, lubricant injected after grasping. The effect of the lubricant, absolute ethanol, was verified under both dry and wet conditions. Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.