تقرير
Collapse of active nematic order through a two-stage dynamic transition
| العنوان: | Collapse of active nematic order through a two-stage dynamic transition |
|---|---|
| المؤلفون: | Ardaševa, Aleksandra, Vélez-Cerón, Ignasi, Pedersen, Martin Cramer, Ignés-Mullol, Jordi, Sagués, Francesc, Doostmohammadi, Amin |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter, Physics - Biological Physics |
| الوصف: | We present a novel two-stage transition of the ordered active nematic state of a system of bundled microtubules into a biphasic active fluid. Specifically, we show that upon light-induced solidification of the underlying medium, microtubule-kinesin motor mixtures first undergo a cascade of folding in on themselves, which is then followed by a progressive formation of isotropic fluid domains, transforming the system into a biphasic active suspension. Using an active lyotropic model, we show that the two-stage transition in the system is governed by screening effects that become important upon substrate changes, leading to higher activity modes to become important. Specifically, the combined effect of friction and quadrupolar activity leads to the hierarchical folding that follows the intrinsic bend instability. Our results demonstrate the dynamics of the collapse of orientational order in active nematics and present a new route for controlling active matter by modifying the activity through changing the surrounding environment. Comment: 6 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2407.03723 |
| رقم الأكسشن: | edsarx.2407.03723 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |