Supporting Force Test of Living Water Striders on Water Surface and Mechanical Analysis

Accuracy of designing and producing a micro-force measuring device is 0.1μN, through the device, the maximum supporting force of living water striders sample and their legs were measured. The results showed that the maximum supporting force of living water striders is 23.6 times its weight, the maximum supporting force of living water striders greater than the sum of six legs, the reason that living water strider’s chest and abdomen touched water surface on process of measuring; Established supporting force model of water strider leg, analyzed the factors associated with supporting force, the key parameters are the water strider leg length and depth of water dimple; Compared the water strider leg’s the maximum supporting force of the measurement value and the calculated value according to theoretical model, verified the correctness of the supporting force model.