SEM Image of the Frictional Hairs (image) University of Cambridge Caption This is a scanning electron microscopy image of conical, micrometer-sized outgrowths that cover the tarsal "heel pads" of some stick insects (false colors). By combining properties of hard and soft materials, these specialized "frictional hairs" are beneficial in that they are non-sticky but produce high coefficients of friction. Credit David Labonte and Adam Robinson Usage Restrictions Please credit 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.