The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Flocking at a distance in active granular matter
Open accessAbstract
The self-organized motion of vast numbers of creatures in a single direction is a spectacular example of emergent order. Here, we recreate this phenomenon using actuated nonliving components. We report here that millimetre-sized tapered rods, rendered motile by contact with an underlying vibrated surface and interacting through a medium of spherical beads, undergo a phase transition to a state of spontaneous alignment of velocities and orientations above a threshold bead area fraction. Guided by a detailed simulation model, we construct an analytical theory of this flocking transition, with two ingredients: a moving rod drags beads; neighbouring rods reorient in the resulting flow like a weathercock in the wind. Theory and experiment agree on the structure of our phase diagram in the plane of rod and bead concentrations and power-law spatial correlations near the phase boundary. Our discovery suggests possible new mechanisms for the collective transport of particulate or cellular matter. Flocking emerges from communication within groups of animals. Here, Kumar et al. create a flock in inanimate matter, by showing that a vibrated layer of a small number of millimetre-sized tapered rods, amidst a background of spherical beads, spontaneously aligns into a state of coherent motion.
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VMD: visual molecular dynamics
Humphrey, W., Dalke, A., & Schulten, K. (1996) · Journal of Molecular Graphics · doi:10.1016/0263-7855(96)00018-5 · Cited by 66,952
Hydrodynamics of soft active matter
Marchetti, M. C., Joanny, J. F., Ramaswamy, S., Liverpool, T. B., Prost, J., Rao, M., & Simha, R. A. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.1143 · Cited by 4,130
Self-citationVicsek, T., & Zafeiris, A. (2012) · Physics Reports · doi:10.1016/j.physrep.2012.03.004 · Cited by 2,923
Catalytic Nanomotors: Autonomous Movement of Striped Nanorods
Paxton, W. F., Kistler, K. C., Olmeda, C. C., Sen, A., St. Angelo, S. K., Cao, Y., Mallouk, T. E., Lammert, P. E., & Crespi, V. H. (2004) · Journal of the American Chemical Society · doi:10.1021/ja047697z · Cited by 2,128
The Mechanics and Statistics of Active Matter
Ramaswamy, S. (2010) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-070909-104101 · Cited by 2,038
Self-citationJülicher, F., Ajdari, A., & Prost, J. (1997) · Reviews of Modern Physics · doi:10.1103/revmodphys.69.1269 · Cited by 1,870
Living Crystals of Light-Activated Colloidal Surfers
Palacci, J., Sacanna, S., Steinberg, A. P., Pine, D. J., & Chaikin, P. M. (2013) · Science · doi:10.1126/science.1230020 · Cited by 1,795
Flocks, herds, and schools: A quantitative theory of flocking
Toner, J., & Tu, Y. (1998) · Physical Review E · doi:10.1103/physreve.58.4828 · Cited by 1,626
Athermal Phase Separation of Self-Propelled Particles with No Alignment
Fily, Y., & Marchetti, M. C. (2012) · Physical Review Letters · doi:10.1103/physrevlett.108.235702 · Cited by 1,143
Hydrodynamics and phases of flocks
Toner, J., Tu, Y., & Ramaswamy, S. (2005) · Annals of Physics · doi:10.1016/j.aop.2005.04.011 · Cited by 1,021
Self-citationEmergence of macroscopic directed motion in populations of motile colloids
Bricard, A., Caussin, J.-B., Desreumaux, N., Dauchot, O., & Bartolo, D. (2013) · Nature · doi:10.1038/nature12673 · Cited by 990
Onset of Collective and Cohesive Motion
Grégoire, G., & Chaté, H. (2004) · Physical Review Letters · doi:10.1103/physrevlett.92.025702 · Cited by 945
The Mechanics and Statistics of Active Matter
Ramaswamy, S. (2010) · NOT FOUND REPOSITORY (Indian Institute of Science Bangalore) · Cited by 900
Self-citationLong-Lived Giant Number Fluctuations in a Swarming Granular Nematic
Narayan, V., Ramaswamy, S., & Menon, N. (2007) · Science · doi:10.1126/science.1140414 · Cited by 840
Self-citationPolar patterns of driven filaments
Schaller, V., Weber, C., Semmrich, C., Frey, E., & Bausch, A. R. (2010) · Nature · doi:10.1038/nature09312 · Cited by 816
Collective Motion of Vibrated Polar Disks
Deseigne, J., Dauchot, O., & Chaté, H. (2010) · Physical Review Letters · doi:10.1103/physrevlett.105.098001 · Cited by 577
Cates, M. E. (2012) · Reports on Progress in Physics · doi:10.1088/0034-4885/75/4/042601 · Cited by 481
Swarming and Swirling in Self-Propelled Polar Granular Rods
Kudrolli, A., Lumay, G., Volfson, D., & Tsimring, L. S. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.058001 · Cited by 403
Boltzmann and hydrodynamic description for self-propelled particles
Bertin, E., Droz, M., & Grégoire, G. (2006) · Physical Review E · doi:10.1103/physreve.74.022101 · Cited by 389
The Dynamics of Herds: From Individuals to Aggregations
Gueron, S., Levin, S. A., & Rubenstein, D. I. (1996) · Journal of Theoretical Biology · doi:10.1006/jtbi.1996.0144 · Cited by 316
Bird Flocks as Condensed Matter
Cavagna, A., & Giardina, I. (2014) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031113-133834 · Cited by 297
Clusters, asters, and collective oscillations in chemotactic colloids
Saha, S., Golestanian, R., & Ramaswamy, S. (2014) · Physical Review E · doi:10.1103/physreve.89.062316 · Cited by 289
Self-citationModel for dynamical coherence in thin films of self-propelled microorganisms
Aranson, I. S., Sokolov, A., Kessler, J. O., & Goldstein, R. E. (2007) · Physical Review E · doi:10.1103/physreve.75.040901 · Cited by 182
Living Clusters and Crystals from Low-Density Suspensions of Active Colloids
Mognetti, B. M., Šarić, A., Angioletti-Uberti, S., Cacciuto, A., Valeriani, C., & Frenkel, D. (2013) · Physical Review Letters · doi:10.1103/physrevlett.111.245702 · Cited by 162
Hydrodynamics of Confined Active Fluids
Brotto, T., Caussin, J.-B., Lauga, E., & Bartolo, D. (2013) · Physical Review Letters · doi:10.1103/physrevlett.110.038101 · Cited by 149
Kumar, N., Ramaswamy, S., & Sood, A. K. (2011) · Physical Review Letters · doi:10.1103/physrevlett.106.118001 · Cited by 75
Self-citationCoherent dynamics of an asymmetric particle in a vertically vibrating bed
Yamada, D., Hondou, T., & Sano, M. (2003) · Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · doi:10.1103/physreve.67.040301 · Cited by 56
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Dorigo, M., Theraulaz, G., & Trianni, V. (2021) · Proceedings of the IEEE · doi:10.1109/jproc.2021.3072740 · Cited by 431
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Alert, R., & Trepat, X. (2020) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031218-013516 · Cited by 375
Shankar, S., Souslov, A., Bowick, M. J., Marchetti, M. C., & Vitelli, V. (2022) · Nature Reviews Physics · doi:10.1038/s42254-022-00445-3 · Cited by 359
The statistical physics of active matter: From self-catalytic colloids to living cells
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Metadata
- Authors
- Kumar, N., Soni, H., Ramaswamy, S., & Sood, A. K.
- Venue
- Nature Communications
- Published
- 2014-09-03
- Volume
- 5
- Issue
- 1
- Pages
- 4688-4688
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W1984966278
- Cited by
- 297
- References
- 27
- FWCI
- 13.63
- Type
- journal article
- Language
- en
- Open access
- bronze
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