|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Recent Advances in Printed Electronics and Additive Manufacturing: 2D/3D Functional Materials, Fabrication Processes, and Emerging Applications
||Additive Manufacturing and Characterization of Surface Acoustic Wave Devices
||Nicholas McKibben, Blake Ryel, Alex Draper, David Estrada, Zhangxian Deng
|On-Site Speaker (Planned)
Piezoelectric materials output an electrical signal when mechanically stressed. Conversely, they change in shape when electrically activated. This effect, known as piezoelectricity, is instantaneous and highly linear, thus enabling innovations in surface acoustic wave (SAW) technology. A typical SAW transducer consists of one or more sets of interdigitated electrode pairs deposited onto the surface of a piezoelectric material. Driven by an electrical voltage, one interdigitated transducer (IDT) launches a surface acoustic wave, which is later transformed back to an electrical signal by the same or a different IDT. Substrate temperature and other environmental factors can be detected by tracking the time-of-flight, insertion loss, or frequency drift of the generated wave. SAW sensor fabrication traditionally relies on labor- and cost-intensive subtractive photolithographic processes that produce large amounts of hazardous corrosive wastes. This study uses an innovative aerosol jet printer to additively manufacture SAW sensors that are capable of detecting ambient environmental conditions.
||Additive Manufacturing, Thin Films and Interfaces, Characterization