TEM Image of Core–Shell Nanoparticle for Printable Biosensors (IMAGE)
Caption
A transmission electron microscopy image of a core–shell cubic nanoparticle. The new core-shell nanoparticles are highly versatile and are used in printing sensor arrays that measure levels of multiple amino acids, metabolites, hormones, or drugs in sweat or bodily fluids simply by using multiple nanoparticle "inks" in a single array. For example, in the work described in the paper, the researchers printed out nanoparticles that bind to vitamin C along with other nanoparticles that bind to the amino acid tryptophan and creatinine, a biomarker commonly measured to see how well the kidneys are working. All of the nanoparticles were combined into one sensor that was then mass produced. These three molecules are of interest in studies of patients with long COVID.
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Caltech
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