Abstract：
The emerging wearable plant sensors demonstrate the capability of in-situ measurement of physiological and micro-environmental information of plants. However, the stretchability and breathability of current wearable plant sensors are restricted mainly due to their 2D planar structures, which interfere with plant growth and development. Here, origami-inspired 3D wearable sensors have been developed for plant growth and microclimate monitoring. Unlike 2D counterparts, the 3D sensors demonstrate theoretically infinitely high stretchability and breathability derived from the structure rather than the material. They are adjusted to 100% and 111.55 mg cm-2·h-1 in the optimized design. In addition to stretchability and breathability, the structural parameters are also used to control the strain distribution of the 3D sensors to enhance sensitivity and minimize interference. After integrating with corresponding sensing materials, electrodes, data acquisition and transmission circuits, and a mobile App, a miniaturized sensing system is produced with the capability of in-situ and online monitoring of plant elongation and microclimate. As a demonstration, the 3D sensors are worn on pumpkin leaves, which can accurately monitor the leaf elongation and microclimate with negligible hindrance to plant growth. Finally, the effects of the microclimate on the plant growth is resolved by analyzing the monitored data. This study would significantly promote the development of wearable plant sensors and their applications in the fields of plant phenomics, plant-environment interface, and smart agriculture.
摘要：
新兴的可穿戴植物传感器展示了对植物的生理和微环境信息进行原位测量的能力。然而,当前可穿戴植物传感器的拉伸性和透气性主要由于其二维平面结构而受到限制，干扰植物生长和发育。这里,折纸启发的3D可穿戴传感器已被开发用于植物生长和微气候监测。与2D对应物不同，从理论上讲，3D传感器具有无限高的拉伸性和透气性，源于结构而不是材料。在优化设计中，将它们调整为100％和111.55mgcm-2·h-1。除了可拉伸性和透气性，结构参数也用于控制三维传感器的应变分布，以提高灵敏度和减少干扰。与相应的传感材料集成后，电极,数据采集和传输电路，和一个移动应用程序，生产了一种小型化的传感系统，具有原位和在线监测植物伸长和微气候的能力。作为一个示范,3D传感器戴在南瓜叶子上，可以准确监测叶片伸长和小气候，对植物生长的阻碍可以忽略不计。最后,小气候对植物生长的影响通过分析监测数据来解决。该研究将大大促进可穿戴植物传感器的发展及其在植物表型组学领域的应用。植物-环境界面，智慧农业。
