Inspired by the wearable sensors and to meet the demand for rapid and nondestructive detection, we developed a smart plant-wearable biosensor, which can be applied for in-situ analysis of organophosphorus pesticide on crop surfaces. Herein, the serpentine three-electrode system was prepared via the laser-induced graphene (LIG) technology. After transferred by polydimethylsiloxane (PDMS), the stretchable and flexible LIG-based electrode was obtained, which can be well adapt to the irregular surface of crops, such as leaves and fruits. After modified with organophosphorus hydrolase (OPH) and equipped with biocompatible semisolid electrolyte, our plant-wearable biosensor can selectively capture and recognize the methyl parathion and the data can be transmitted to a smartphone device wirelessly, which enable the real-time and in-situ electrochemical analysis of pesticide on the surface of agricultural products. To further enhance the electrochemical performance, gold nanoparticles (AuNPs) were modified on the surface of three-dimensional (3D) porous LIG. Such smart plant-wearable biosensor could be a transformative approach for the in-situ analysis of pesticide residue on crops, which could also promote the development of precision agriculture in the future.

受可穿戴传感器的启发并满足对快速无损检测的需求，我们开发了一种智能的可穿戴植物生物传感器，该传感器可用于作物表面有机磷农药的现场分析。在此，通过激光诱导石墨烯（LIG）技术制备了蛇形三电极系统。经聚二甲基硅氧烷（PDMS）转移后，获得了可拉伸且灵活的基于LIG的电极，该电极可很好地适应农作物的不规则表面，如叶子和果实。经过有机磷水解酶（OPH）修饰并配备生物相容性半固体电解质后，我们的可穿戴式生物传感器可以选择性地捕获和识别甲基对硫磷，并将数据无线传输到智能手机设备，可以对农产品表面的农药进行实时和原位电化学分析。为了进一步增强电化学性能，在三维（3D）多孔LIG表面上修饰了金纳米颗粒（AuNPs）。这种智能的可穿戴式生物传感器可能是一种转变方法，用于现场分析农作物上的农药残留，这也可能促进未来精准农业的发展。