Morphology-induced collective behaviors : dynamic pattern formation in water-floating elements
| Autor: | Aubery Marchel Tientcheu Ngouabeu, Kohei Nakajima, Maurice Göldi, Rolf Pfeifer, Shuhei Miyashita, Rudolf Marcel Füchslin |
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| Přispěvatelé: | University of Zurich, Nakajima, Kohei |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Anatomy and Physiology
10009 Department of Informatics Thermodynamic equilibrium Complex system Biophysics System stability Pattern formation lcsh:Medicine Bioengineering 1100 General Agricultural and Biological Sciences 02 engineering and technology 000 Computer science knowledge & systems 010402 general chemistry Bioinformatics 01 natural sciences Engineering 1300 General Biochemistry Genetics and Molecular Biology Biological Systems Engineering Dynamic pattern lcsh:Science Biology Musculoskeletal System Physics Enhancer Elements 1000 Multidisciplinary Multidisciplinary 530: Physik Mechanical Engineering Applied Mathematics lcsh:R Computational Biology Robotics Models Theoretical 021001 nanoscience & nanotechnology 0104 chemical sciences Vibration lcsh:Q 0210 nano-technology Biological system Mathematics Research Article Biotechnology |
| Zdroj: | PLoS ONE PLoS ONE, Vol 7, Iss 6, p e37805 (2012) |
| DOI: | 10.21256/zhaw-1666 |
| Popis: | Complex systems involving many interacting elements often organize into patterns. Two types of pattern formation can be distinguished, static and dynamic. Static pattern formation means that the resulting structure constitutes a thermodynamic equilibrium whose pattern formation can be understood in terms of the minimization of free energy, while dynamic pattern formation indicates that the system is permanently dissipating energy and not in equilibrium. In this paper, we report experimental results showing that the morphology of elements plays a significant role in dynamic pattern formation. We prepared three different shapes of elements (circles, squares, and triangles) floating in a water-filled container, in which each of the shapes has two types: active elements that were capable of self-agitation with vibration motors, and passive elements that were mere floating tiles. The system was purely decentralized: that is, elements interacted locally, and subsequently elicited global patterns in a process called self-organized segregation. We showed that, according to the morphology of the selected elements, a different type of segregation occurs. Also, we quantitatively characterized both the local interaction regime and the resulting global behavior for each type of segregation by means of information theoretic quantities, and showed the difference for each case in detail, while offering speculation on the mechanism causing this phenomenon. |
| Databáze: | OpenAIRE |
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