Engineers describe how fluid suspensions exhibit different behaviors at different scales

Journal Reference: Virgile Thiévenaz, Alban Sauret. The onset of heterogeneity in the pinch-off of suspension drops. Proceedings of the National Academy of Sciences, 2022; 119 (13) DOI: 10.1073/pnas.2120893119 Engineers use this to their advantage by modeling the macroscopic properties of a suspension based on the size and concentration of its particles. However, this approximation breaks … Read more

Artificial material protects light states on smallest length scales

Journal Reference: Jinlong Lu, Konstantin G. Wirth, Wenlong Gao, Andreas Heßler, Basudeb Sain, Thomas Taubner, Thomas Zentgraf. Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology. Science Advances, 2021; 7 (49) DOI: 10.1126/sciadv.abl3903 Topological crystals function on the basis of specific structures, the properties of which remain largely unaffected by disturbances and deviations. … Read more

Peeking into a chrysalis, videos reveal growth of butterfly wing scales

Journal Reference: Anthony D. McDougal, Sungsam Kang, Zahid Yaqoob, Peter T. C. So, Mathias Kolle. In vivo visualization of butterfly scale cell morphogenesis in Vanessa cardui. Proceedings of the National Academy of Sciences, 2021; 118 (49): e2112009118 DOI: 10.1073/pnas.2112009118 Now, MIT engineers have captured the intricate choreography of butterfly scales forming during metamorphosis. The team … Read more