This study presents a wearable plant tattoo sensor array designed for continuous monitoring of leaf temperature, relative water content, and biopotential. Current plant wearable sensor technologies often require relatively bulky substrates for sensor support and adhesives for leaf attachment, which potentially can hinder plant growth and affect long-term measurements. The multifunctional tattoo sensor array overcomes these issues by adhering directly to the leaf surface without the need for additional supporting structures or glues. This array includes a biopotential electrode, a resistive temperature sensor, and an impedimetric water content sensor, all constructed using laminated gold-on-polymer thin-film patterns. Due to their mechanical flexibility, stretchability, and conformability, the sensors can seamlessly attach to leaves via van der Waals force. Performances of these sensors are evaluated to explore plant responses under diverse growth environments. This sensor array is capable of both short-term and long-term monitoring, offering continuous data and detailed insights into plant physiological responses to various stress conditions.

中文翻译：

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用于叶子相对含水量、表面温度和生物电位监测的植物纹身传感器阵列


这项研究提出了一种可穿戴植物纹身传感器阵列，旨在连续监测叶子温度、相对含水量和生物电势。目前的植物可穿戴传感器技术通常需要相对笨重的基板来支撑传感器，并需要粘合剂来附着叶子，这可能会阻碍植物生长并影响长期测量。多功能纹身传感器阵列通过直接粘附到叶子表面而无需额外的支撑结构或胶水来克服这些问题。该阵列包括一个生物电势电极、一个电阻温度传感器和一个阻抗含水量传感器，全部采用层压聚合物薄膜图案构建。由于其机械灵活性、可拉伸性和适应性，传感器可以通过范德华力无缝连接到叶子上。对这些传感器的性能进行评估，以探索植物在不同生长环境下的反应。该传感器阵列能够进行短期和长期监测，提供有关植物对各种胁迫条件的生理反应的连续数据和详细见解。