A wearable in-sensor computing platform based on stretchable organic electrochemical transistors

IF 33.7 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

Nature Electronics Pub Date : 2024-10-02 DOI:10.1038/s41928-024-01250-9

Dingyao Liu, Xinyu Tian, Jing Bai, Shaocong Wang, Shilei Dai, Yan Wang, Zhongrui Wang, Shiming Zhang

引用次数: 0

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.

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基于可拉伸有机电化学晶体管的可穿戴传感计算平台

有机电化学晶体管可用于传感器计算和可穿戴医疗保健应用。然而，有机电化学晶体管缺乏最大限度减少器件与人体之间机械不匹配所需的保形性和可拉伸性，以小特征尺寸和高密度制造具有挑战性，并且需要微型化的读出系统才能实现实际的体内应用。在此，我们报告了一种基于可拉伸有机电化学晶体管阵列的可穿戴传感计算平台。该平台在制造过程中使用了粘合超分子缓冲层，提高了应变下界面的稳健性，从而提供了 50% 以上的可拉伸性。我们利用高分辨率六通道喷墨打印系统制造出特征尺寸小至 100 μm 的可拉伸晶体管阵列。我们还开发了一种硬币大小的数据读出系统，用于生物信号采集。我们的研究表明，我们的硬币大小、与智能手表兼容的电子模块可以提供可穿戴的传感器边缘计算。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Electronics Engineering-Electrical and Electronic Engineering

CiteScore

47.50

自引率

2.30%

发文量

159

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