A method of manufacturing a piezoelectric structure (10), comprising: providing a first set of electrodes (14a) and a second set of electrodes (14b) arranged in an alternating interdigitated pattern, wherein the electrodes are positioned at a predetermined interval (ti) from one another; providing elongate piezoelectric elements (16) having lengths longer than half the predetermined interval and shorter than the predetermined interval; providing a layer, comprising a fluid carrier and the piezoelectric elements, that connects the electrodes; applying an alternating voltage between the first and second set of electrodes so as to create an alternating electric field in the layer that aligns the piezoelectrical elements with the electric field; solidifying the fluid carrier to form a solid matrix material.