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Originally published by Karolinska Institutet on June 12, 2023 Credit: Unsplash/CC0 Public Domain Researchers at Karolinska Institutet have created a new method of studying the smallest bioparticles in the body. The study, which is published in Nature Biotechnology, has considerable scientific potential, such as in the development of more effective vaccines. Circulating around the body are nanoparticles that affect it in one way or another. For example, there are lipoproteins that maintain cell metabolism, pathogenic viruses that cause many diseases and lipid nanoparticles that are used to carry drugs, like recent mRNA vaccines . However, such particles are too small to be studied easily . To enable this, the researchers in this study have developed a new method that they call single-particle profiling (SPP) . Read more

Originally published by Thamarasee Jeewandar a, Phys.org, on April 27, 2023 Effect of monodisperse binary nanoparticle mixture (220nm-diameter melanin and 220nm-diameter silica; melanin, blue spheres; silica, yellow spheres) composition and mixing state on the supraball color reflectance. -- (A) Visualizations of the cross-section of binary mixture supraballs with varying levels of particle mixing in the increasing order from top to bottom and varying relative proportion of silica in the increasing order from left to right. (B) Corresponding structural colors, represented as RGB color panels, of the binary mixture supraballs. Credit: Science Advances, doi: 10.1126/sciadv.adf2859 Materials scientists are often bioinspired, and in a new study, bird-inspired by structural colors exhibited by avian species to form non-iridescent nanoparticle assemblies. Such nanoparticle mixtures varying in particle chemistry and size can affect the color produced to identify struc