Organic Sensor Array Distributed in Flexible and Curved Surface

Organic sensor array were fabricated on a curved plastic substrate of which Gauss curvature was finite. In this work, we proposed soft robot finger as one of the test case of curved surface device, that have artificial tactile sense by detecting slight deformation induced by touching an object. We made curved surface sensor array by thermal molding of organic thin film transistors fabricated on thin plastic film. Because both organic thin film and thin plastic substrate film are sufficiently soft and flexible, we successfully detected the strain distribution which is induced by a slight deformation. Observed data indicate that the induced strain is classified into the tensile and compressive strain depending on the pixel location, and corresponds to the amount of Ah, and in addition, real time detection is achieved. We expect this ‘electronic artificial tactile sense’ will be connected with the recent AI technologies, and sensitive robot finger in the precision work field will be realized in the near future.