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Title: Solid friction between soft filaments

Abstract

Any macroscopic deformation of a filamentous bundle is necessarily accompanied by local sliding and/or stretching of the constituent filaments. Yet the nature of the sliding friction between two aligned filaments interacting through multiple contacts remains largely unexplored. Here, by directly measuring the sliding forces between two bundled F-actin filaments, we show that these frictional forces are unexpectedly large, scale logarithmically with sliding velocity as in solid-like friction, and exhibit complex dependence on the filaments’ overlap length. We also show that a reduction of the frictional force by orders of magnitude, associated with a transition from solid-like friction to Stokes’s drag, can be induced by coating F-actin with polymeric brushes. Furthermore, we observe similar transitions in filamentous microtubules and bacterial flagella. In conclusion, our findings demonstrate how altering a filament’s elasticity, structure and interactions can be used to engineer interfilament friction and thus tune the properties of fibrous composite materials.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3];  [4];  [1]
  1. Brandeis Univ., Waltham, MA (United States)
  2. Florida Atlantic Univ., Boca Raton, FL (United States)
  3. Univ. Leiden (The Netherlands)
  4. Harvard Univ., Cambridge, MA (United States)
Publication Date:
Research Org.:
Brandeis Univ., Waltham, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); MacArthur Foundation
OSTI Identifier:
1347136
Grant/Contract Number:  
SC0010432; CMMI-1068566; NSF-MRI-0923057; NSF-MRSEC-1206146
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Materials
Additional Journal Information:
Journal Volume: 14; Journal Issue: 6; Journal ID: ISSN 1476-1122
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ward, Andrew, Hilitski, Feodor, Schwenger, Walter, Welch, David, Lau, A. W. C., Vitelli, Vincenzo, Mahadevan, L., and Dogic, Zvonimir. Solid friction between soft filaments. United States: N. p., 2015. Web. doi:10.1038/nmat4222.
Ward, Andrew, Hilitski, Feodor, Schwenger, Walter, Welch, David, Lau, A. W. C., Vitelli, Vincenzo, Mahadevan, L., & Dogic, Zvonimir. Solid friction between soft filaments. United States. doi:10.1038/nmat4222.
Ward, Andrew, Hilitski, Feodor, Schwenger, Walter, Welch, David, Lau, A. W. C., Vitelli, Vincenzo, Mahadevan, L., and Dogic, Zvonimir. Mon . "Solid friction between soft filaments". United States. doi:10.1038/nmat4222. https://www.osti.gov/servlets/purl/1347136.
@article{osti_1347136,
title = {Solid friction between soft filaments},
author = {Ward, Andrew and Hilitski, Feodor and Schwenger, Walter and Welch, David and Lau, A. W. C. and Vitelli, Vincenzo and Mahadevan, L. and Dogic, Zvonimir},
abstractNote = {Any macroscopic deformation of a filamentous bundle is necessarily accompanied by local sliding and/or stretching of the constituent filaments. Yet the nature of the sliding friction between two aligned filaments interacting through multiple contacts remains largely unexplored. Here, by directly measuring the sliding forces between two bundled F-actin filaments, we show that these frictional forces are unexpectedly large, scale logarithmically with sliding velocity as in solid-like friction, and exhibit complex dependence on the filaments’ overlap length. We also show that a reduction of the frictional force by orders of magnitude, associated with a transition from solid-like friction to Stokes’s drag, can be induced by coating F-actin with polymeric brushes. Furthermore, we observe similar transitions in filamentous microtubules and bacterial flagella. In conclusion, our findings demonstrate how altering a filament’s elasticity, structure and interactions can be used to engineer interfilament friction and thus tune the properties of fibrous composite materials.},
doi = {10.1038/nmat4222},
journal = {Nature Materials},
number = 6,
volume = 14,
place = {United States},
year = {Mon Mar 02 00:00:00 EST 2015},
month = {Mon Mar 02 00:00:00 EST 2015}
}

Journal Article:
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Cited by: 25 works
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