Seismic characterization of a landslide dam failure hazard chain: Insights into flow dynamics and implications for warning

Chen, Guan; Yang, Yunpeng; Meng, Xingmin; Chong, Yan; Shi, Wei; Jin, Jiacheng; Bian, Shiqiang; Wu, Jie; Yue, Dongxia

doi:10.1016/j.enggeo.2022.106852

Cited by 4 publications

(1 citation statement)

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“…Wave perception is of great significance for monitoring underwater health and exploring ocean current. , The emerging soft electronic devices featuring mechanical flexibility and conformality hold the promise to be deployed on various carriers for aquatic sensing demand, such as physiological monitoring for divers and biomechanical analysis of aquatic lives. − Although the flexible device techniques are on the rise, a number of technical hurdles still exist that limit meeting these critical underwater requirements. For instance, prolonged immersion in liquid environments may potentially threaten long-term stability, such as resulting in electrochemical corrosion or even short circuits .…”

Section: Introductionmentioning

confidence: 99%

An Ultrahighly Pressure Sensitive Electronic Fish Skin for Underwater Wave Sensing

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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Underwater flexible sensors have a future for wide application, which is promising for attaching them to underwater creatures to monitor vital signals and biomechanical analysis of their motion and perceive tiny environmental disturbances. However, the pressure waves induced by biological swimming are extremely weak and susceptible to undercurrents, making them difficult to sense. Here, we report an ultrahighly sensitive biomimetic electronic fish skin designed by embedding an artificial pseudocapacitive-based hair cell into a simulated canal neuromast encapsulation structure, in which the artificial hair cell, as the key sensitive unit, is assembled from hybrid film electrodes and polyurethane–acidic electrolyte foam. Such a film is prepared by inter-cross-linking MXene and holey reduced graphene oxide with the assistance of l-cysteine, effectively increasing the interfacial capacitance and alleviating the oxidation issues of MXene. Meanwhile, the acidic foam with high porosity shows great compressibility to adapt to a high-pressure underwater environment. Consequently, the device exhibits ultrahighly sensitivity (maximum sensitivity ∼173688 kPa–1) over a wide range of depths (0–100 m) and remains stable after 10000 repeated tests. As an example case, the device is integrated as a motion monitoring system to identify the minor disturbances triggered by instantaneous postural changes of fish. The electronic fish skin is expected to demonstrate enormous potentials in flow field monitoring, ocean current detecting, and even seismic waves warning.

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