Abstract
Authors have proposed a simple tactile nail chip made of a quenched ribbon steel, which is a wearable device attached on the nail to bend the nail inside. Previously, we verified the effect of the simple tactile nail chip that changes the tactile sensitivity through psychophysical experiments. In this paper, we conduct a roughness evaluation experiment with several types of simple tactile nail chips with different curvature and width, which bend the nail with different intensities. Experimental results show the change of the tactile sensitivity is influenced by the intensity of the nail-bending and there are great individual differences in the sensitivity change.
