| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Mold-Free Manufacturing of Highly Sensitive and Fast Response Pressure Sensors through High-Resolution 3D Printing and Conformal Oxidative Chemical Vapor Deposition Polymers |
| Author(s) |
Jinwook Baek, Yujie Shan, Mitesh Mylvaganan, Yuxuan Zhang, Fei Qin, Han Wook Song, Huachao Mao, Sunghwan Lee |
| On-Site Speaker (Planned) |
Jinwook Baek |
| Abstract Scope |
In this work, we showcase a new manufacturing paradigm to exclude conventional mold-dependent manufacturing of pressure sensors, which typically requires a series of complex processes. Our mold-free manufacturing leverages high-resolution 3D printed multiscale microstructures as substrate and a gas-phase conformal polymer coating technique to complete the sensing platform. The multiscale microstructures ensure a large contact surface and extended linearity in a wide pressure range. For uniform coating of sensing elements on the multiscale surface, oxidative chemical vapor deposition is employed to deposit a highly conformal and conductive sensing element, poly(3,4-ethylenedioxythiophene) at low temperatures. The fabricated sensor reacts sensitively to various ranges of pressures and shows an ultra-fast response time. The finite element analysis identifies the effect of the multiscale structure on the sensing performance. Our unique findings are expected to be substantially relevant to the technology that requires higher sensing capability, scalability, and easy sensor geometry adjustment for efficient manufacturing. |