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This technology offers several advantages over traditional sensors, particularly in terms of maintenance and performance. Unlike conventional sensors that are susceptible to biofouling—which necessitates frequent maintenance and increases operational costs—this new sensor minimizes such issues, allowing for reduced maintenance frequency and lower long-term costs. The sensor has been validated in real-world conditions through collaborations with the State Key Laboratory of Marine Pollution and local conservation departments.The development of this DO sensing technology is a collaborative effort between the City University of Hong Kong and the Education University of Hong Kong, with patents filed in multiple regions including the USA, Europe, and China. Recognized for its innovation, this technology has received several awards, including a silver medal at Inventions Geneva 2022.

Artificial Mussel (AM) is a passive sampling device specifically invented for monitoring metals/radionuclides in freshwater, marine water and waterwater. It consists of a newly synthesized chelating complex suspended in artificial seawater within a Perspex tubing enclosed with semi-permeable gel at both ends. Artificial Mussels overcome the problems and limitations presented by existing metal/radionuclides monitoring methods using water, sediment, and mussels. This low-cost monitoring device (ca. US$1.5 each) provides a new and highly promising alternative for environmental monitoring of metals and radionuclides with zero-energy input, is easy to use, and for the first time, provides a standardized tool for monitoring heavy metals and radionuclides in different aquatic environments globally. At present, we are collaborating with Hong Kong Government departments, Hellenic Centre for Marine Research (Greece), Xiamen University (China) and Seoul National University (South Korea) for field monitoring of radionuclides and metals using our Artificial Mussels. Collaborating with the State Key Laboratory of Marine Pollution, arrangements have been made to deploy Artificial Mussels in 50 countries worldwide by 2025 through the 10-year “Global Estuaries Monitoring (GEM) Programme”, endorsed by the United Nations.

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