Professor Shiming Zhang of the Department of Electrical and Electronic Engineering and his team worked on the research for the topic “A wearable in-sensor computing platform based on stretchable organic electrochemical transistors”. The research findings were recently published in Nature Electronics on October 2, 2024.
Details of the publication:
A wearable in-sensor computing platform based on stretchable organic electrochemical transistors
Dingyao Liu, Xinyu Tian, Jing Bai, Shaocong Wang, Shilei Dai, Yan Wang, Zhongrui Wang and Shiming Zhang
Article in Nature Electronics
https://www.nature.com/articles/s41928-024-01250-9
Abstract
Organic electrochemical transistors could be used in in-sensor computing and wearable healthcare applications. However, they lack the conformity and stretchability needed to minimize mechanical mismatch between the devices and human body, are challenging to fabricate at a scale with small feature sizes and high density, and require miniaturized readout systems for practical on-body applications. Here we report a wearable in-sensor computing platform based on stretchable organic electrochemical transistor arrays. The platform offers more than 50% stretchability by using an adhesive supramolecular buffer layer during fabrication that improves robustness at interfaces under strain. We fabricate stretchable transistor arrays with feature sizes down to 100 μm using a high-resolution six-channel inkjet printing system. We also develop a coin-sized data readout system for biosignal acquisition. We show that our coin-sized, smartwatch-compatible electronic module can provide wearable in-sensor edge computing.