Gecko, Tomatoes, and Cell Phone (VIDEO) Georgia Institute of Technology This video is under embargo. Please login to access this video. Caption The slightest bit of shear tension makes gecko adhesion surfaces grip, and the release of that same tension makes them let go. The same gripping surfaces can pick up objects of all shapes, sizes, and materials with the exception of Teflon and other non-stick surfaces. Credit Georgia Tech / Varenberg lab Usage Restrictions None 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.