Researchers at the University of Pittsburgh Swanson School of Engineering have developed a novel small-scale system capable of identifying chemicals in solutions by forming three-dimensional patterns, analogous to chemical "fingerprints." Led by Principal Investigator Anna C. Balazs, the team utilized catalysts in a fluid-filled chamber, with flexible posts coated with specific enzymes. These posts bend in distinct directions when triggered by reactants, producing unique visual patterns that reflect the chemical composition of the solution. Lead author Moselm Moradi constructed a chamber with 81 flexible posts, demonstrating the ability to control and tune patterns as reactants are added sequentially. Postdoc Oleg E. Shklyaev highlighted the significance of these results, as the observed patterns serve as chemical fingerprints and can be detected visually. The system has potential applications in detecting hazardous chemicals or toxins, offering a simple yet effective "chemical nose" for portable chemical identification.
From: EurekAlert!
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