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Author(s): Kell Mortensen, Anine L. Borger, Jacob J. K. Kirkensgaard, Qian Huang, Ole Hassager, and Kristoffer Almdal We present structural relaxation studies of a polystyrene star polymer after cessation of high-rate extensional flow. During the steady-state flow, the scattering pattern shows two sets of independent correlations peaks, reflecting the structure of a polymer confined in a fully oriented three-armed ... [Phys. Rev. Lett. 127...

Author(s): Emmanuel Siéfert, Nicolas Cattaud, Etienne Reyssat, Benoît Roman, and José Bico Patterning grooves into the surface of an elastic ribbon can cause the ribbon to curl into a tube shape when it is stretched. [Phys. Rev. Lett. 127, 168002] Published Thu Oct 14, 2021

Author(s): Yérali Gandica, J. Stephen Lansing, Ning Ning Chung, Stefan Thurner, and Lock Yue Chew We propose a Hamiltonian approach to reproduce the relevant elements of the centuries-old Subak irrigation system in Bali, showing a cluster-size distribution of rice-field patches that is a power-law with an exponent of $∼2$. Besides this exponent, the resulting system presents two equilibria. The ... [Phys. Rev. Lett. 127, 168301] Published Thu...

Author(s): Xuemao Zhou, Shuo Wang, Longbin Xian, Zameer Hussain Shah, Yurou Li, Guanhua Lin, and Yongxiang Gao We study experimentally the effect of added salt in the phoretic motion of chemically driven colloidal particles. We show that the response of passive colloids to a fixed active colloid, be it attractive or repulsive, depends on the ionic strength, the $ζ$ potential, and the size of the passive coll... [Phys. Rev. Lett. 127, 168001...

Author(s): Rasika Dahanayake and Elena E. Dormidontova The origin of the coil-globule transition for water-soluble thermoresponsive polymers frequently used in nanomaterials remains elusive. Using polypropylene oxide as an example we demonstrate by means of atomistic molecular dynamics simulations that temperature-induced increase in the sequence length... [Phys. Rev. Lett. 127, 167801] Published Tue Oct 12, 2021

Author(s): Dean Korošak, Marko Jusup, Boris Podobnik, Andraž Stožer, Jurij Dolenšek, Petter Holme, and Marjan Slak Rupnik $β$ cells are biologically essential for humans and other vertebrates. Because their functionality arises from cell-cell interactions, they are also a model system for collective organization among cells. There are currently two contradictory pictures of this organization: the hub-cell idea pointing... [Phys. Rev. Lett....

Author(s): Valentin M. Slepukhin and Alex J. Levine We discuss the response of biopolymer filament bundles bound by transient cross-linkers to compressive loading. These systems admit a mechanical instability at stresses typically below that of traditional Euler buckling. In this instability, there is thermally activated pair production of topologica... [Phys. Rev. Lett. 127, 157801] Published Thu Oct 07, 2021