Design of piezoelectric transducers using topology optimization

Design of a piezoelectric mirror scanning device using topology optimization

1. Abstract There are several optical applications in which a mirror or lens requires accurate manipulation, for example in microscanning or focusing optical systems. Typically, such devices are designed on a trial-and-error basis. To improve on this procedure, we apply topology optimization in the design of a piezoelectric micropositioner. The mechanism employs two piezoelectric stack actuator...

Topology optimization of piezoelectric nanostructures

Design of Piezoelectric Actuators Using the Topology Optimization Based on Density Method

Flextensional Piezoelectric Actuator consists of a flexible structure actuated by piezoelectric ceramics. These actuators are applied to microelectromechanical systems (MEMS), nanotechnology equipment, microsurgery equipment, etc. However, due to the fact these actuators essentially consist of a compliant mechanism their design is complex. The compliant structure behaves as a mechanical transfo...

The Use of Phononic Crystals to Design Piezoelectric Power Transducers

It was recently proposed that the lateral resonances around the working resonance band of ultrasonic piezoelectric sandwich transducers can be stopped by a periodic array of circular holes drilled along the main propagation direction (a phononic crystal). In this work, the performance of different transducer designs made with this procedure is tested using laser vibrometry, electric impedance t...

Shape Design Optimization of Unimorph Piezoelectric Cantilever Energy Harvester

The most promising method for micro scale energy scavenging is via vibration energy harvesting which converts mechanical energy to electrical energy. Using piezoelectric cantilevers is the most common method for vibration energy harvesting. Changing the shape of the cantilevers can lead to changing the generated output voltage and power. In this work vibration energy harvesting via piezoelectri...