Low Hysteresis and Fatigue-Resistant Polyvinyl Alcohol/Activated Charcoal Hydrogel Strain Sensor for Long-Term Stable Plant Growth Monitoring.
Low Hysteresis and Fatigue-Resistant Polyvinyl Alcohol/Activated Charcoal Hydrogel Strain Sensor for Long-Term Stable Plant Growth Monitoring.
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DOI：
10.3390/polym15010090
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发表时间：
2022-12-26
期刊：
影响因子：
5
通讯作者：
Lu B
中科院分区：
文献类型：
--
作者：
Wang L;Zhang Z;Cao J;Zheng W;Zhao Q;Chen W;Xu X;Luo X;Liu Q;Liu X;Xu J;Lu B
柔性应变传感器作为一种测量工具，通过长期稳定地监测植物生长的动态进程，在农业发展中发挥着重要作用。然而，现有的应变传感器仍然遭受严重的缺点，如大滞后，疲劳强度不足，和较差的稳定性，限制了它们在植物生长的长期监测的广泛应用。在此，我们通过将导电活性炭（AC）均匀分散在高粘度聚乙烯醇（PVA）溶液中形成连续的导电网络，并通过冻融简单制备，制备了一种新型的导电水凝胶应变传感器。所制备的应变传感器表现出低滞后（<1.5%）、抗疲劳性（疲劳阈值为40.87 J m-2）和机械循环时的长期感测稳定性。我们进一步展示了PVA-AC应变传感器的集成和应用，以监测植物的生长14天。本研究为利用导电水凝胶应变传感器监测植物生长提供了一种有效的方法，促进了农业的发展。
Flexible strain sensor as a measurement tool plays a significant role in agricultural development by long-term stable monitoring of the dynamic progress of plant growth. However, existing strain sensors still suffer from severe drawbacks, such as large hysteresis, insufficient fatigue resistance, and inferior stability, limiting their broad applications in the long-term monitoring of plant growth. Herein, we fabricate a novel conductive hydrogel strain sensor which is achieved through uniformly dispersing the conductive activated charcoal (AC) in high-viscosity polyvinyl alcohol (PVA) solution forming a continuous conductive network and simple preparation by freezing-thawing. The as-prepared strain sensor demonstrates low hysteresis (<1.5%), fatigue resistance (fatigue threshold of 40.87 J m−2), and long-term sensing stability upon mechanical cycling. We further exhibit the integration and application of PVA-AC strain sensor to monitor the growth of plants for 14 days. This work may offer an effective strategy for monitoring plant growth with conductive hydrogel strain sensor, facilitating the advancement of agriculture.
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DOI：
10.1002/advs.202201059
发表时间：
2022-05
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
通讯作者：
--
影响因子：
29.4
作者：
Shen, Zequn;Zhu, Xiangyang;Gu, Guoying
通讯作者：
Gu, Guoying
影响因子：
29.4
作者：
Liang, Xiangyu;Chen, Guangda;Liu, Ji
通讯作者：
Liu, Ji
影响因子：
19
作者：
Lee, Giwon;Wei, Qingshan;Zhu, Yong
通讯作者：
Zhu, Yong
影响因子：
6.8
作者：
Oren, Seval;Ceylon, Halil;Dong, Liang
通讯作者：
Dong, Liang