Scientists developed a smartphone-compatible ethanol sensor using a metal-organic framework called Cu-MOF-74. The sensor visually detects ethanol concentrations across a wide range, with no electronics or lab tools required.
This technology has promising applications in environmental monitoring, healthcare, industrial processes, and alcohol breath analysis.
Ethanol is used widely in food, pharmaceuticals, and fuel. It is also the intoxicating ingredient in many alcoholic beverages. Accurate detection of ethanol concentration, particularly in products containing both ethanol and water, is crucial for product hygiene management and quality maintenance. These MOFs contain nanometer-sized pores that absorb ethanol molecules and respond with a visible color change -- a phenomenon known as solvato/vapochromism. Thanks to its low light-scattering properties and high transparency, the Cu-MOF-74 film enables precise optical measurements without the need for complex lab equipment.
The researchers' findings offer a smarter, simpler, and more reliable approach to alcohol sensing. From the quality of your drink to the potential future of portable breath tests, this new sensor technology brings us a colorful step closer to real-time alcohol monitoring in everyday life.
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