Hu Siqi, Zhang Wuxu, Li Shengbin, Wang Yuwei, Gao Zhiyi, Xia Xiangling, Xiao Huiyun, Zhang Qi, Xu Dan, Xu Feng, Liu Jinyun, Bian Baoru, Wu Yuanzhao, Liu Yiwei, Shang Jie, Li Run-Wei
CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
ACS Appl Mater Interfaces. 2024 Sep 11;16(36):48025-48033. doi: 10.1021/acsami.4c10569. Epub 2024 Aug 27.
The origin of life on Earth is believed to be from the ocean, which offers abundant resources in its depths. However, deep-sea operations are limited due to the lack of underwater robots and rigid grippers with sensitive force sensors. Therefore, it is crucial for deep-sea pressure sensors to be integrated with mechanical hands for manipulation. Here, a flexible stress sensor is presented that can function effectively under high water pressure in the deep ocean. Inspired by biological structures found in the abyssal zone, our sensor is designed with an internal and external pressure balance structure (hollow interlocking spherical structure). The digital light processing (DLP) three-dimensional (3D) printing technology is utilized to construct this complex structure after obtaining optimized structural parameters using finite element simulation. The sensor exhibits linear sensitivity of 0.114 kPa within the range of 0-15 kPa and has an extremely short response time of 32 ms, good dynamic-static load response capability, and excellent resistance cycling stability. It shows high sensitivity of 1.74 kPa even under 30 MPa static water pressures and the theoretical working pressure can exceed 110 MPa, which provides a new solution for deep-sea robots.
地球上的生命起源被认为来自海洋，海洋深处拥有丰富的资源。然而，由于缺乏配备灵敏力传感器的水下机器人和刚性夹具，深海作业受到限制。因此，将深海压力传感器与机械手集成以进行操作至关重要。在此，提出了一种柔性应力传感器，它可以在深海的高水压下有效工作。受深海区域生物结构的启发，我们的传感器采用内部和外部压力平衡结构（空心互锁球形结构）设计。在使用有限元模拟获得优化的结构参数后，利用数字光处理（DLP）三维（3D）打印技术构建这种复杂结构。该传感器在0-15 kPa范围内表现出0.114 kPa的线性灵敏度，响应时间极短，为32 ms，具有良好的动静载响应能力和出色的抗循环稳定性。即使在30 MPa的静水压下，它也显示出1.74 kPa的高灵敏度，理论工作压力可超过110 MPa，这为深海机器人提供了一种新的解决方案。
