V. V. Apyari received his Ph.D. and DSc degrees from Lomonosov Moscow State University. Currently, he is a chief researcher at the Department of Chemistry of Lomonosov Moscow State University. His research interests include optical sensors based on gold and silver nanoparticles, magnetic sorbents, nanocomposites based on polyurethane foam, magnetic nanoparticles, molecular absorption spectroscopy, digital colorimetry, microfluidic paper-based analytical devices, and test methods.