evidence: To find out, he and his colleagues designed a biomimetic tactile sensor, a contraption that resembles the structure of a human finger,, with sensors that would detect vibrations similarly to the way that Pacinian corpuscles do. One version of this device was smooth, and another had a ridged pattern on the surface that mimicked a human fingerprint. When moved over a surface, the ridged one yielded a fascinating discovery: the ridges on the sensor amplified the exact frequency of vibrations that Pacinian corpuscles are so sensitive to.