| Title |
Orientational order of motile defects in active nematics
|
|---|---|
| Published in |
Nature Materials, August 2015
|
| DOI | 10.1038/nmat4387 |
| Pubmed ID | |
| Authors | |
| Abstract |
The study of liquid crystals at equilibrium has led to fundamental insights into the nature of ordered materials, as well as to practical applications such as display technologies. Active nematics are a fundamentally different class of liquid crystals, driven away from equilibrium by the autonomous motion of their constituent rod-like particles. This internally generated activity powers the continuous creation and annihilation of topological defects, which leads to complex streaming flows whose chaotic dynamics seem to destroy long-range order. Here, we study these dynamics in experimental and computational realizations of active nematics. By tracking thousands of defects over centimetre-scale distances in microtubule-based active nematics, we identify a non-equilibrium phase characterized by a system-spanning orientational order of defects. This emergent order persists over hours despite defect lifetimes of only seconds. Similar dynamical structures are observed in coarse-grained simulations, suggesting that defect-ordered phases are a generic feature of active nematics. |
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X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 6 | 38% |
| United Kingdom | 1 | 6% |
| Japan | 1 | 6% |
| France | 1 | 6% |
| Australia | 1 | 6% |
| Canada | 1 | 6% |
| Unknown | 5 | 31% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 8 | 50% |
| Members of the public | 8 | 50% |
Mendeley demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 3 | <1% |
| Vietnam | 1 | <1% |
| United States | 1 | <1% |
| Iran, Islamic Republic of | 1 | <1% |
| India | 1 | <1% |
| Switzerland | 1 | <1% |
| Unknown | 307 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 97 | 31% |
| Researcher | 46 | 15% |
| Student > Master | 33 | 10% |
| Professor | 22 | 7% |
| Student > Bachelor | 14 | 4% |
| Other | 39 | 12% |
| Unknown | 64 | 20% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 144 | 46% |
| Engineering | 28 | 9% |
| Materials Science | 18 | 6% |
| Chemistry | 17 | 5% |
| Agricultural and Biological Sciences | 14 | 4% |
| Other | 27 | 9% |
| Unknown | 67 | 21% |