@article{TEXTUAL,
      recid = {11449},
      author = {Redford, Steven A. and Colen, Jonathan and Shivers, Jordan  L. and Zemsky, Sasha and Molaei, Mehdi and Floyd, Carlos  and Ruijgrok, Paul V. and Vitelli, Vincenzo and Bryant, Zev  and Dinner, Aaron R. and Gardel, Margaret L.},
      title = {Motor crosslinking augments elasticity in active nematics},
      journal = {Soft Matter},
      address = {2024-02-02},
      number = {TEXTUAL},
      abstract = {In active materials, uncoordinated internal stresses lead  to emergent long-range flows. An understanding of how the  behavior of active materials depends on mesoscopic  (hydrodynamic) parameters is developing, but there remains  a gap in knowledge concerning how hydrodynamic parameters  depend on the properties of microscopic elements. In this  work, we combine experiments and multiscale modeling to  relate the structure and dynamics of active nematics  composed of biopolymer filaments and molecular motors to  their microscopic properties, in particular motor  processivity, speed, and valency. We show that crosslinking  of filaments by both motors and passive crosslinkers not  only augments the contributions to nematic elasticity from  excluded volume effects but dominates them. By altering  motor kinetics we show that a competition between motor  speed and crosslinking results in a nonmonotonic dependence  of nematic flow on motor speed. By modulating passive  filament crosslinking we show that energy transfer into  nematic flow is in large part dictated by crosslinking.  Thus motor proteins both generate activity and contribute  to nematic elasticity. Our results provide new insights for  rationally engineering active materials.},
      url = {http://knowledge.uchicago.edu/record/11449},
}