Our selection of piezo chips and stacks includes co-fired chips, co-fired stacks, and discrete stacks, as well as stacks with strain-gauges for closed-loop operation. Chips and discrete stacks with through-holes, shear chips, stacks with attached strain gauges, and bimorph bending actuators are available, as well as piezo ring chips and ring stacks. Piezo crystal chips and stacks provide lower hysteresis when compared to our standard piezo ceramic components. Ultrasonic piezo chips are designed for ultrasonic vibration applications and resonant frequency operation.