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Updated: Feb 11, 2026

Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Superhydrophobic WS2-Nanosheet-Wrapped Sponges for Underwater Detection of Tiny Vibration
Ruixin Xu1,2, Kaili Zhang2, Xiangyang Xu1
1School of Media and Communication Shenzhen Polytechnic Shenzhen 518055 China.
Abstract:
Underwater vibration detection is of great importance in personal safety, environmental protection, and military defense. Sealing layers are required in many underwater sensor architectures, leading to limited working-life and reduced sensitivity. Here, a flexible, superhydrophobic, and conductive tungsten disulfide (WS2) nanosheets-wrapped sponge (SCWS) is reported for the high-sensitivity detection of tiny vibration from the water surfaces and from the grounds. When the SCWS is immersed in water, a continuous layer of bubbles forms on its surfaces, providing the sensor with two special abilities. One is sealing-free feature due to the intrinsic water-repellent property of SCWS. The other is functioning as a vibration-sensitive medium to convert mechanical energy into electric signals through susceptible physical deformation of bubbles. Therefore, the SCWS can be used to precisely detect tiny vibration of water waves, and even sense those caused by human footsteps, demonstrating wide applications of this amphibious (water/ground) vibration sensor. Results of this study can initiate the exploration of superhydrophobic materials with elastic and conductive properties for underwater flexible electronic applications.
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