期刊
REVIEWS OF MODERN PHYSICS
卷 85, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/RevModPhys.85.1143
关键词
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资金
- National Science Foundation [DMR-0806511, DMR-1004789, DGE-1068780]
- CEFIPRA, the Indo-French Centre for the Promotion of Advanced Research [3504-2]
- EPSRC [EP/G026440/1]
- J.C. Bose Fellowship
- European Network Mitosys
- EPSRC [EP/G026440/1, EP/E065678/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E065678/1, EP/G026440/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1004789] Funding Source: National Science Foundation
This review summarizes theoretical progress in the field of active matter, placing it in the context of recent experiments. This approach offers a unified framework for the mechanical and statistical properties of living matter: biofilaments and molecular motors in vitro or in vivo, collections of motile microorganisms, animal flocks, and chemical or mechanical imitations. A major goal of this review is to integrate several approaches proposed in the literature, from semimicroscopic to phenomenological. In particular, first considered are dry systems, defined as those where momentum is not conserved due to friction with a substrate or an embedding porous medium. The differences and similarities between two types of orientationally ordered states, the nematic and the polar, are clarified. Next, the active hydrodynamics of suspensions or wet systems is discussed and the relation with and difference from the dry case, as well as various large-scale instabilities of these nonequilibrium states of matter, are highlighted. Further highlighted are various large-scale instabilities of these nonequilibrium states of matter. Various semimicroscopic derivations of the continuum theory are discussed and connected, highlighting the unifying and generic nature of the continuum model. Throughout the review, the experimental relevance of these theories for describing bacterial swarms and suspensions, the cytoskeleton of living cells, and vibrated granular material is discussed. Promising extensions toward greater realism in specific contexts from cell biology to animal behavior are suggested, and remarks are given on some exotic active-matter analogs. Last, the outlook for a quantitative understanding of active matter, through the interplay of detailed theory with controlled experiments on simplified systems, with living or artificial constituents, is summarized.
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