Abstract
In this paper, we propose a layered contact sensor for material identification. The proposed sensor consists of the PVDF (Polyvinylidene Fluoride) films, which each electrode is constructed by Indium Tin Oxide (ITO) electrode as the transparent conductive electrode, and the photo sensors. The optical properties are measured by an infrared LED and a phototransisitor, and the electrical properties are measured by the surface ITO electrodes of the PVDF films. In addition, the vibrational and ultrasonic properties are measured by the PVDF films. Therefore, the optical, electrical, vibrational and ultrasonic properties are measured by the proposed sensor. In the experiment, the identification of fourteen kinds of materials was demonstrated by the proposed sensor. As results, it is suggested that the material identification including hardness and thickness is possible.
