| 摘要 |
Provided is a sensor device which employs a piezoelectric film, formed from a chiral polymer such as polylactic acid, in sensing a displacement. A sensor device comprises: a film (21) formed from, for example, PLLA; and electrodes for extracting an output voltage from the PLLA film (21), and which are formed on both primary surfaces of the PLLA film (21) in a state of mutually facing one another and sandwiching at least a portion of the PLLA film (21). A first edge (24) of the PLLA film (21) is fixed, and a second edge (25) which is opposite thereto is a movable part (28). The electrodes are made to extract an output voltage by an effect of a piezoelectric constant (d14) which is caused by a shear deformation which arises by a displacement of the movable part (28) in a parallel direction to the primary surfaces of the PLLA film (21), and is capable of sensing an operation caused by friction, etc. |
