http://prl.aps.org/ Recently published articles in Phys. Rev. Lett. in the Table of Content section "Soft Matter, Biological, and Interdisciplinary Physics" en-us Copyright (c) 2009 The American Physical Society 2009-11-05T23:49:17-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-05T23:49:17-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevLett.103.198103 Author(s): Kyriacos C. Leptos, Jeffrey S. Guasto, J. P. Gollub, Adriana I. Pesci, and Raymond E. Goldstein<br/>In contexts such as suspension feeding in marine ecologies there is an interplay between Brownian motion of nonmotile particles and their advection by flows from swimming microorganisms. As a laboratory realization, we study passive tracers in suspensions of eukaryotic swimmers, the alga Chlamydomon...<br/>[Phys. Rev. Lett. 103, 198103] Published Thu Nov 05, 2009 Kyriacos C. Leptos, Jeffrey S. Guasto, J. P. Gollub, Adriana I. Pesci, and Raymond E. Goldstein 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.198103 Phys. Rev. Lett. 103, 198103 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 198103 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.198102 Author(s): Enju Lima, Lutz Wiegart, Petra Pernot, Malcolm Howells, Joanna Timmins, Federico Zontone, and Anders Madsen<br/>X-ray diffraction microscopy (XDM) is well suited for nondestructive, high-resolution biological imaging, especially for thick samples, with the high penetration power of x rays and without limitations imposed by a lens. We developed nonvacuum, cryogenic (cryo-) XDM with hard x rays at 8 keV and ...<br/>[Phys. Rev. Lett. 103, 198102] Published Thu Nov 05, 2009 Enju Lima, Lutz Wiegart, Petra Pernot, Malcolm Howells, Joanna Timmins, Federico Zontone, and Anders Madsen 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.198102 Phys. Rev. Lett. 103, 198102 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 198102 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.198101 Author(s): Xiaojing Huang, Johanna Nelson, Janos Kirz, Enju Lima, Stefano Marchesini, Huijie Miao, Aaron M. Neiman, David Shapiro, Jan Steinbrener, Andrew Stewart, Joshua J. Turner, and Chris Jacobsen<br/>We report the first image of an intact, frozen hydrated eukaryotic cell using x-ray diffraction microscopy, or coherent x-ray diffraction imaging. By plunge freezing the specimen in liquid ethane and maintaining it below -170 °C, artifacts due to dehydration, ice crystallization, and radiation da...<br/>[Phys. Rev. Lett. 103, 198101] Published Thu Nov 05, 2009 Xiaojing Huang, Johanna Nelson, Janos Kirz, Enju Lima, Stefano Marchesini, Huijie Miao, Aaron M. Neiman, David Shapiro, Jan Steinbrener, Andrew Stewart, Joshua J. Turner, and Chris Jacobsen 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.198101 Phys. Rev. Lett. 103, 198101 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 198101 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.198701 Author(s): Seth A. Marvel, Steven H. Strogatz, and Jon M. Kleinberg<br/>We model a close-knit community of friends and enemies as a fully connected network with positive and negative signs on its edges. Theories from social psychology suggest that certain sign patterns are more stable than others. This notion of social “balance” allows us to define an energy landsca...<br/>[Phys. Rev. Lett. 103, 198701] Published Wed Nov 04, 2009 Seth A. Marvel, Steven H. Strogatz, and Jon M. Kleinberg 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.198701 Phys. Rev. Lett. 103, 198701 text/html article Physical Review Letters 103 19 2009-11-04T00:00:00-05:00 198701 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.198301 Author(s): Hsiao-Ping Hsu, Kurt Binder, and Wolfgang Paul<br/>One-dimensional flexible objects are abundant in physics, from polymers to vortex lines to defect lines and many more. These objects structure their environment and it is natural to assume that the influence these objects exert on their environment depends on the distance from the line object. But h...<br/>[Phys. Rev. Lett. 103, 198301] Published Wed Nov 04, 2009 Hsiao-Ping Hsu, Kurt Binder, and Wolfgang Paul 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.198301 Phys. Rev. Lett. 103, 198301 text/html article Physical Review Letters 103 19 2009-11-04T00:00:00-05:00 198301 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.188103 Author(s): G. Chevereau, L. Palmeira, C. Thermes, A. Arneodo, and C. Vaillant<br/>The nucleosome ordering observed in vivo along yeast genes is described by a thermodynamical model of nonuniform fluid of 1D hard rods confined by two excluding energy barriers at gene extremities. For interbarrier distances L≲1.5  kbp, nucleosomes equilibrate into a crystal-like configuratio...<br/>[Phys. Rev. Lett. 103, 188103] Published Fri Oct 30, 2009 G. Chevereau, L. Palmeira, C. Thermes, A. Arneodo, and C. Vaillant 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.188103 Phys. Rev. Lett. 103, 188103 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 188103 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.187802 Author(s): LiDong Pan, Shun Wang, C. S. Hsu, and C. C. Huang<br/>Free standing films of a liquid crystal compound with simple surface enhanced order were studied. The resultant phase diagram demonstrates that (1) the short helical pitch smectic-C_{α}^{*} phase disappears below a film thickness of 10 layers, and (2) the temperature window of a distorted 4 layer...<br/>[Phys. Rev. Lett. 103, 187802] Published Fri Oct 30, 2009 LiDong Pan, Shun Wang, C. S. Hsu, and C. C. Huang 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187802 Phys. Rev. Lett. 103, 187802 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 187802 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.187801 Author(s): P. Setny, Z. Wang, L.-T. Cheng, B. Li, J. A. McCammon, and J. Dzubiella<br/>We report on a combined atomistic molecular dynamics simulation and implicit solvent analysis of a generic hydrophobic pocket-ligand (host-guest) system. The approaching ligand induces complex wetting-dewetting transitions in the weakly solvated pocket. The transitions lead to bimodal solvent fluctu...<br/>[Phys. Rev. Lett. 103, 187801] Published Fri Oct 30, 2009 P. Setny, Z. Wang, L.-T. Cheng, B. Li, J. A. McCammon, and J. Dzubiella 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187801 Phys. Rev. Lett. 103, 187801 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 187801 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.188302 Author(s): Laura Filion, Matthieu Marechal, Bas van Oorschot, Daniël Pelt, Frank Smallenburg, and Marjolein Dijkstra<br/>We present an efficient and robust method based on Monte Carlo simulations for predicting crystal structures at finite temperature. We apply this method, which is surprisingly easy to implement, to a variety of systems, demonstrating its effectiveness for hard, attractive, and anisotropic interacti...<br/><img src="http://prola.aps.org/graphics/prlsugg30x30.gif" width="30" height="30" alt="PRL Editors' Suggestion"/><br/>[Phys. Rev. Lett. 103, 188302] Published Thu Oct 29, 2009 Laura Filion, Matthieu Marechal, Bas van Oorschot, Daniël Pelt, Frank Smallenburg, and Marjolein Dijkstra 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.188302 Phys. Rev. Lett. 103, 188302 text/html article Physical Review Letters 103 18 2009-10-29T00:00:00-04:00 188302 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.188102 Author(s): A. Imparato, A. Pelizzola, and M. Zamparo<br/>The mechanical unfolding of a simple RNA hairpin and of a 236-base portion of the Tetrahymena thermophila ribozyme is studied by means of an Ising-like model. Phase diagrams and free energy landscapes are computed exactly and suggest a simple two-state behavior for the hairpin and the presence of in...<br/>[Phys. Rev. Lett. 103, 188102] Published Thu Oct 29, 2009 A. Imparato, A. Pelizzola, and M. Zamparo 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.188102 Phys. Rev. Lett. 103, 188102 text/html article Physical Review Letters 103 18 2009-10-29T00:00:00-04:00 188102 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.188301 Author(s): Asmae Khaldoun, Peder Moller, Abdoulaye Fall, Gerard Wegdam, Bert De Leeuw, Yves Méheust, Jon Otto Fossum, and Daniel Bonn<br/>We study the rheology of quick clay, an unstable soil responsible for many landslides. We show that above a critical stress the material starts flowing abruptly with a very large viscosity decrease caused by the flow. This leads to avalanche behavior that accounts for the instability of quick clay s...<br/>[Phys. Rev. Lett. 103, 188301] Published Wed Oct 28, 2009 Asmae Khaldoun, Peder Moller, Abdoulaye Fall, Gerard Wegdam, Bert De Leeuw, Yves Méheust, Jon Otto Fossum, and Daniel Bonn 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.188301 Phys. Rev. Lett. 103, 188301 text/html article Physical Review Letters 103 18 2009-10-28T00:00:00-04:00 188301 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.188101 Author(s): Badr Kaoui, George Biros, and Chaouqi Misbah<br/>Understanding why red blood cells (RBCs) move with an asymmetric shape (slipperlike shape) in small blood vessels is a long-standing puzzle in blood circulatory research. By considering a vesicle (a model system for RBCs), we discovered that the slipper shape results from a loss in stability of the ...<br/><img src="http://prola.aps.org/graphics/prlsugg30x30.gif" width="30" height="30" alt="PRL Editors' Suggestion"/><br/>[Phys. Rev. Lett. 103, 188101] Published Mon Oct 26, 2009 Badr Kaoui, George Biros, and Chaouqi Misbah 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.188101 Phys. Rev. Lett. 103, 188101 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 188101 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.178302 Author(s): Tamás Börzsönyi, Robert E. Ecke, and Jim N. McElwaine<br/>Dense granular flows are often unstable and form inhomogeneous structures. Although significant advances have been recently made in understanding simple flows, instabilities of such flows are often not understood. We present experimental and numerical results that show the formation of longitudinal ...<br/>[Phys. Rev. Lett. 103, 178302] Published Fri Oct 23, 2009 Tamás Börzsönyi, Robert E. Ecke, and Jim N. McElwaine 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.178302 Phys. Rev. Lett. 103, 178302 text/html article Physical Review Letters 103 17 2009-10-23T00:00:00-04:00 178302 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.178301 Author(s): Abdoulaye Fall, François Bertrand, Guillaume Ovarlez, and Daniel Bonn<br/>We study the emergence of a yield stress in dense suspensions of non-Brownian particles by combining local velocity and concentration measurements using magnetic resonance imaging with macroscopic rheometric experiments. We show that the competition between gravity and viscous stresses is at the ori...<br/>[Phys. Rev. Lett. 103, 178301] Published Fri Oct 23, 2009 Abdoulaye Fall, François Bertrand, Guillaume Ovarlez, and Daniel Bonn 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.178301 Phys. Rev. Lett. 103, 178301 text/html article Physical Review Letters 103 17 2009-10-23T00:00:00-04:00 178301 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.177801 Author(s): Maria S. S. Pereira, Marcelo L. Lyra, and Italo N. de Oliveira<br/>Strongly anchored free-standing smectic films usually present a stepwise reduction of the number of layers when the temperature is raised above the smectic-isotropic bulk transition temperature. Here, we demonstrate that a field-induced layer thinning transition can take place in smectic films with ...<br/>[Phys. Rev. Lett. 103, 177801] Published Tue Oct 20, 2009 Maria S. S. Pereira, Marcelo L. Lyra, and Italo N. de Oliveira 2009-10-20T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.177801 Phys. Rev. Lett. 103, 177801 text/html article Physical Review Letters 103 17 2009-10-20T00:00:00-04:00 177801 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.168103 Author(s): Raymond E. Goldstein, Marco Polin, and Idan Tuval<br/>It has long been conjectured that hydrodynamic interactions between beating eukaryotic flagella underlie their ubiquitous forms of synchronization; yet there has been no experimental test of this connection. The biflagellate alga Chlamydomonas is a simple model for such studies, as its two flagella ...<br/>[Phys. Rev. Lett. 103, 168103] Published Fri Oct 16, 2009 Raymond E. Goldstein, Marco Polin, and Idan Tuval 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.168103 Phys. Rev. Lett. 103, 168103 text/html article Physical Review Letters 103 16 2009-10-16T00:00:00-04:00 168103 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.168102 Author(s): Sergei Vakulenko, Manu, John Reinitz, and Ovidiu Radulescu<br/>We propose a new mechanism for robust biological patterning. The mechanism bears analogy to interface dynamics in condensed media. We apply this method to study how gene networks control segmentation of Drosophila. The proposed model is minimal involving only 4 genes and a morphogen gradient. We dis...<br/>[Phys. Rev. Lett. 103, 168102] Published Thu Oct 15, 2009 Sergei Vakulenko, Manu, John Reinitz, and Ovidiu Radulescu 2009-10-15T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.168102 Phys. Rev. Lett. 103, 168102 text/html article Physical Review Letters 103 16 2009-10-15T00:00:00-04:00 168102 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.168301 Author(s): C. Reichhardt and C. J. Olson Reichhardt<br/>We provide evidence that the general phenomenon of plastic depinning can be described as an absorbing phase transition, and shows the same features as the random organization which was recently studied in periodically driven particle systems [L. Corte , Nature Phys. 4, 420 (2008)]. In the plastic fl...<br/>[Phys. Rev. Lett. 103, 168301] Published Wed Oct 14, 2009 C. Reichhardt and C. J. Olson Reichhardt 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.168301 Phys. Rev. Lett. 103, 168301 text/html article Physical Review Letters 103 16 2009-10-14T00:00:00-04:00 168301 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.167803 Author(s): Koichiro Sadakane, Akira Onuki, Koji Nishida, Satoshi Koizumi, and Hideki Seto<br/>A phase transition is observed between a one-phase disordered phase and an ordered phase with multilamellar (onion) structures in an off-critical mixture of D_{2} O and 3-methylpyridine (3MP) containing 85 mM of a salt in the absence of a surfactant. The salt consists of hydrophilic cations and hyd...<br/>[Phys. Rev. Lett. 103, 167803] Published Wed Oct 14, 2009 Koichiro Sadakane, Akira Onuki, Koji Nishida, Satoshi Koizumi, and Hideki Seto 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.167803 Phys. Rev. Lett. 103, 167803 text/html article Physical Review Letters 103 16 2009-10-14T00:00:00-04:00 167803 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.168701 Author(s): Filippo Radicchi and Santo Fortunato<br/>We study scale-free networks constructed via a cooperative Achlioptas growth process. Links between nodes are introduced in order to produce a scale-free graph with given exponent λ for the degree distribution, but the choice of each new link depends on the mass of the clusters that this link will ...<br/>[Phys. Rev. Lett. 103, 168701] Published Tue Oct 13, 2009 Filippo Radicchi and Santo Fortunato 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.168701 Phys. Rev. Lett. 103, 168701 text/html article Physical Review Letters 103 16 2009-10-13T00:00:00-04:00 168701 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.168101 Author(s): José A. Capitán, José A. Cuesta, and Jordi Bascompte<br/>We introduce a toy model of ecosystem assembly for which we are able to map out all assembly pathways generated by external invasions. The model allows us to display the whole phase space in the form of an assembly graph whose nodes are communities of species and whose directed links are transitions...<br/>[Phys. Rev. Lett. 103, 168101] Published Tue Oct 13, 2009 José A. Capitán, José A. Cuesta, and Jordi Bascompte 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.168101 Phys. Rev. Lett. 103, 168101 text/html article Physical Review Letters 103 16 2009-10-13T00:00:00-04:00 168101 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.167802 Author(s): Leo Radzihovsky and Quan Zhang<br/>We explore liquid crystal order in a cell with a “dirty” substrate imposing a random surface pinning. Modeling such systems by a random-field xy model with surface heterogeneity, we find that orientational order in the three-dimensional system is marginally unstable to such surface pinning. We c...<br/>[Phys. Rev. Lett. 103, 167802] Published Mon Oct 12, 2009 Leo Radzihovsky and Quan Zhang 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.167802 Phys. Rev. Lett. 103, 167802 text/html article Physical Review Letters 103 16 2009-10-12T00:00:00-04:00 167802 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.167801 Author(s): Giovanni Carbone, Giuseppe Lombardo, Riccardo Barberi, Igor Muševič, and Uroš Tkalec<br/>Using an atomic force microscopy, we have measured the separation dependence of the force between an atomically flat mica sheet and a micrometer-sized glass sphere immersed in the nematic liquid crystal. As the mica surface induces a strong parallel alignment and the treated glass sphere induces a s...<br/>[Phys. Rev. Lett. 103, 167801] Published Mon Oct 12, 2009 Giovanni Carbone, Giuseppe Lombardo, Riccardo Barberi, Igor Muševič, and Uroš Tkalec 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.167801 Phys. Rev. Lett. 103, 167801 text/html article Physical Review Letters 103 16 2009-10-12T00:00:00-04:00 167801 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.158102 Author(s): P.-Y. Plaçais, M. Balland, T. Guérin, J.-F. Joanny, and P. Martin<br/>Spontaneous mechanical oscillations occur in various types of biological systems where groups of motor molecules are elastically coupled to their environment. By using an optical trap to oppose the gliding motion of a single bead-tailed actin filament over a substrate densely coated with myosin moto...<br/>[Phys. Rev. Lett. 103, 158102] Published Fri Oct 09, 2009 P.-Y. Plaçais, M. Balland, T. Guérin, J.-F. Joanny, and P. Martin 2009-10-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.158102 Phys. Rev. Lett. 103, 158102 text/html article Physical Review Letters 103 15 2009-10-09T00:00:00-04:00 158102 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.158101 Author(s): Robert G. Endres and Ned S. Wingreen<br/>The accuracy by which biological cells sense chemical concentration is ultimately limited by the random arrival of particles at the receptors by diffusion. This fundamental physical limit is generally considered to be the Berg-Purcell limit [Biophys. J. 20, 193 (1977)]. Here we derive a lower limit ...<br/>[Phys. Rev. Lett. 103, 158101] Published Wed Oct 07, 2009 Robert G. Endres and Ned S. Wingreen 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.158101 Phys. Rev. Lett. 103, 158101 text/html article Physical Review Letters 103 15 2009-10-07T00:00:00-04:00 158101 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.157801 Author(s): Mark Wilson and Philip S. Salmon<br/>Network-forming liquids comprising tetrahedral motifs are investigated by large-scale molecular dynamics computer simulations within the framework of an ionic interaction model. The network topology is controlled by varying the anion polarizability, which governs the intertetrahedral bond angle, for...<br/>[Phys. Rev. Lett. 103, 157801] Published Wed Oct 07, 2009 Mark Wilson and Philip S. Salmon 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.157801 Phys. Rev. Lett. 103, 157801 text/html article Physical Review Letters 103 15 2009-10-07T00:00:00-04:00 157801 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.148701 Author(s): Zhenyuan Zhao, Juan Camilo Bohorquez, Alex Dixon, and Neil F. Johnson<br/>The many-body dynamics exhibited by living objects include group formation within a population and the nonequilibrium process of attrition between two opposing populations due to competition or conflict. We show analytically and numerically that the combination of these two dynamical processes gener...<br/>[Phys. Rev. Lett. 103, 148701] Published Fri Oct 02, 2009 Zhenyuan Zhao, Juan Camilo Bohorquez, Alex Dixon, and Neil F. Johnson 2009-10-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.148701 Phys. Rev. Lett. 103, 148701 text/html article Physical Review Letters 103 14 2009-10-02T00:00:00-04:00 148701 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.148103 Author(s): Hao Ge and Hong Qian<br/>We show that the thermodynamic limit of a bistable phosphorylation-dephosphorylation cycle has a selection rule for the “more stable” macroscopic steady state. The analysis is akin to the Maxwell construction. Based on the chemical master equation approach, it is shown that, except at a critical...<br/>[Phys. Rev. Lett. 103, 148103] Published Fri Oct 02, 2009 Hao Ge and Hong Qian 2009-10-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.148103 Phys. Rev. Lett. 103, 148103 text/html article Physical Review Letters 103 14 2009-10-02T00:00:00-04:00 148103 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.148102 Author(s): Jürgen Reingruber and David Holcman<br/>The mean time for a diffusing ligand to activate a target protein located on the surface of a microdomain can regulate cellular signaling. When the ligand switches between various states induced by chemical interactions or conformational changes, while target activation occurs in only one state, thi...<br/>[Phys. Rev. Lett. 103, 148102] Published Wed Sep 30, 2009 Jürgen Reingruber and David Holcman 2009-09-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.148102 Phys. Rev. Lett. 103, 148102 text/html article Physical Review Letters 103 14 2009-09-30T00:00:00-04:00 148102 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://link.aps.org/doi/10.1103/PhysRevLett.103.148101 Author(s): Andrey Sokolov and Igor S. Aranson<br/>Measurements of the shear viscosity in suspensions of swimming Bacillus subtilis in free-standing liquid films have revealed that the viscosity can decrease by up to a factor of 7 compared to the viscosity of the same liquid without bacteria or with nonmotile bacteria. The reduction in viscosity is ...<br/>[Phys. Rev. Lett. 103, 148101] Published Tue Sep 29, 2009 Andrey Sokolov and Igor S. Aranson 2009-09-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.148101 Phys. Rev. Lett. 103, 148101 text/html article Physical Review Letters 103 14 2009-09-29T00:00:00-04:00 148101 Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics