Professor Park Jin-hee and her research team at DGIST have introduced a groundbreaking technology for detecting hazardous chemicals, offering a convenient solution accessible through a mobile phone camera. This innovation holds immense potential for detecting environmental pollution and preventing gas leakage, among other applications.
Volatile organic compounds (VOCs) pose significant threats to the environment and human health, originating from sources like factory emissions and indoor air pollutants. Conventional detection methods are either costly or limited in scope, necessitating a more accessible solution.
To address this challenge, Prof. Park and her team developed a sensor utilizing a material known as "metal-organic framework" to induce color changes. This sensor, created using six different solvents, can distinguish between 14 VOCs and water. Additionally, the team produced large-area films at a low cost, enabling easy observation of color changes with the naked eye.
Through mobile phone analysis, users can detect low concentrations of harmful compounds that may be undetectable by the human nose. Notably, these sensors perform effectively even in high-humidity environments, making them versatile for various applications, including environmental monitoring and safety measures.
Prof. Park highlights the commercial potential of these sensors, emphasizing their operation without power and cost-effectiveness. With further development, these sensors could be instrumental in environmental protection, terrorism prevention, and safety accident mitigation.
The technology represents a significant step towards democratizing hazardous chemical detection, offering a user-friendly and cost-effective solution accessible to all.
More: https://phys.org/news/2024-03-easily-environmental-pollution-substances-mobile.html
