تقرير
Mechanical response of active gels
| العنوان: | Mechanical response of active gels |
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| المؤلفون: | Liverpool, T. B., Marchetti, M. C., Joanny, J. -F., Prost, J. |
| سنة النشر: | 2008 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter |
| الوصف: | We study a model of an active gel of cross-linked semiflexible filaments with additional active linkers such as myosin II clusters. We show that the coupling of the elasticity of the semiflexible filaments to the mechanical properties of the motors leads to contractile behavior of the gel, in qualitative agreement with experimental observations. The motors, however, soften the zero frequency elastic constant of the gel. When the collective motor dynamics is incorporated in the model, a stiffening of the network at high frequencies is obtained. The frequency controlling the crossover between low and high frequency network elasticity is estimated in terms of microscopic properties of motors and filaments, and can be as low as 10^(-3)Hz. Comment: 6 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1209/0295-5075/85/18007 |
| URL الوصول: | http://arxiv.org/abs/0807.3031 |
| رقم الأكسشن: | edsarx.0807.3031 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1209/0295-5075/85/18007 |
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