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.

有机电化学晶体管可用于传感器内计算和可穿戴医疗保健应用。然而，它们缺乏最大限度地减少设备与人体之间的机械失配所需的一致性和可拉伸性，难以以小特征尺寸和高密度进行大规模制造，并且需要小型化读出系统才能用于实际的车身应用。在这里，我们报告了一个基于可拉伸有机电化学晶体管阵列的可穿戴传感器内计算平台。该平台通过在制造过程中使用粘合剂超分子缓冲层来提高应力下界面的稳健性，从而提供超过 50% 的拉伸性。我们使用高分辨率六通道喷墨打印系统制造特征尺寸低至 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。我们表明，我们的硬币大小、兼容智能手表的电子模块可以提供可穿戴的传感器内边缘计算。