Lu Yuyao, Xu Kaichen, Zhang Lishu, Deguchi Minako, Shishido Hiroaki, Arie Takayuki, Pan Ruihua, Hayashi Akitoshi, Shen Lei, Akita Seiji, Takei Kuniharu
Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, People's Republic of China.
ACS Nano. 2020 Sep 22;14(9):10966-10975. doi: 10.1021/acsnano.0c03757. Epub 2020 Aug 3.
The rising global human population and increased environmental stresses require a higher plant productivity while balancing the ecosystem using advanced nanoelectronic technologies. Although multifunctional wearable devices have played distinct roles in human healthcare monitoring and disease diagnosis, probing potential physiological health issues in plants poses a formidable challenge due to their biological complexity. Herein an integrated multimodal flexible sensor system is proposed for plant growth management using stacked ZnInS(ZIS) nanosheets as the kernel sensing media. The proposed ZIS-based flexible sensor can not only perceive light illumination at a fast response (∼4 ms) but also monitor the humidity with a perdurable steady performance that has yet to be reported elsewhere. First-principles calculations reveal that the tunneling effect dominates the current model associated with humidity response. This finding guides the investigation on the plant stomatal functions by measuring plant transpiration. Significantly, dehydration conditions are visually recorded during a monitoring period (>15 days). This work may contribute to plant-machine biointerfaces to precisely manage plant health status and judiciously utilize limited resources.
全球人口的增长和环境压力的增加，需要在利用先进的纳米电子技术平衡生态系统的同时提高植物生产力。尽管多功能可穿戴设备在人类健康监测和疾病诊断中发挥了独特作用，但由于植物的生物复杂性，探测植物潜在的生理健康问题面临着巨大挑战。在此，提出了一种集成多模态柔性传感器系统，用于以堆叠的ZnInS（ZIS）纳米片作为核心传感介质的植物生长管理。所提出的基于ZIS的柔性传感器不仅能够以快速响应（约4毫秒）感知光照，还能够以持久稳定的性能监测湿度，这在其他地方尚未见报道。第一性原理计算表明，隧道效应主导了与湿度响应相关的电流模型。这一发现通过测量植物蒸腾作用指导了对植物气孔功能的研究。值得注意的是，在监测期（超过15天）内直观记录了脱水情况。这项工作可能有助于植物-机器生物界面精确管理植物健康状况并明智地利用有限资源。
