Personnel: YI Shenghui (Research Fellow, shenghyi2-c@my.cityu.edu.hk, Tel: (86)755-8658 1568, -8658 1519)

This technique is based on multistable shells which are developed by nanotechnology, surface mechanical attrition treatment (SMAT). The shape transitions of the bistable or multistable shells in the structure brings volume change to adjust buoyant force in the water and enables the submerging and surfacing without weight change of the structure. This technique is originally designed for water environment monitoring applied in inshore coastal waters, especially for carols. In contrast to conventional approaches, such as using cable wired devices, autonomous underwater vehicles, divers, etc., this wireless system is cheap and simple, which can achieve submerging and surfacing movements automatically. The operative parameters can be setup on water surface remotely or nearby. Data collected underwater can be transited when the device is on water surface.

Uniqueness & Competitive Advantages

• Underwater mobility is achieved without changing structure weight.
• Underwater devices can be manufactured in a cheap and simple way, which can be consumable products.
• Underwater mobility can be programmed to provide automatic service with data remotely transited.

Awards
China Hi-tech Fair 2017 Excellent Product Award

Relevant Publication
Shenghui Yi, Xiaoqiao He, Jian Lu., Bistable metallic materials produced by nanocrstallization process Materials & Design Vol. 141, 2018, 374-383.

Filed Patents
15/165639 (US), 201610618036.5 (PRC), 201710823315.X(PRC)