Piezoelectric substrate, piezoelectric fabric, piezoelectric knitted fabric, piezoelectric device, force sensor, actuator and biometric information acquisition device

摘要

An elongated conductor and a first elongated piezoelectric body wound in a spiral in one direction with respect to the conductor, the first piezoelectric material comprising a helical chiral polymer (A) having optical activity, and the first piezoelectric material The longitudinal direction and the main orientation direction of the helical chiral polymer (A) included in the first piezoelectric body are substantially parallel, and the orientation degree F of the first piezoelectric body obtained by the following formula (a) from X-ray diffraction measurement is 0.5 or more. It is a piezoelectric substrate in the range of less than 1.0. Orientation F=(180°-α)/180°… (a) (In formula (a), α represents the half-value width of the peak derived from orientation)