(440j) Rational Design of Capacitive Pressure Sensors Based on Material Properties and Architecture of Pyramidal Microstructures
AIChE Annual Meeting
2020
2020 Virtual AIChE Annual Meeting
Engineering Sciences and Fundamentals
Soft and Autonomous Materials Systems
Thursday, November 19, 2020 - 10:00am to 10:15am
Presented here is an improved fabrication method to achieve simple, tunable, consistent, and reproducible pressure sensors by using a pyramid microstructured dielectric layer along with an added lamination layer to improve consistency and reproducibility. The as-produced sensor performance is matches predicted trends of parameters that can be explicitly controlled. Further, we develop a simple computational model using intrinsic properties of the elastic dielectric layer and experimentally confirmed its efficacy. We then use our model to predict other properties and a wider range within the tested properties to better understand the effect of material property and microstructure geometry on the sensor performance. This would allow us to anticipate trends and sensor performance. Finally, we demonstrate that we can more directly design sensors for a specific application, such as wrist pulse sensing, using our model and fabrication method.
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