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Log-rolling micelles in sheared amphiphilic thin films.

Publication ,  Journal Article
Arya, G; Panagiotopoulos, AZ
Published in: Physical review letters
October 2005

Using molecular dynamics simulations, we show that sheared solutions of cylindrical micelle-forming amphiphiles behave very differently under extreme confinement as compared to the bulk. When confined to ultrathin films, the self-assembled cylindrical micelles roll along the shearing direction and align parallel to each other with their axes along the vorticity direction, as opposed to aligning parallel to the shearing direction in the bulk. It is shown that this new "log-rolling" phase arises due to a strong coupling between the rotational degree of freedom of the micelles and the steady sliding motion of the confining surfaces. We examine the microscopic mechanism of the log-rolling phenomenon and also discuss its dependence on the segregation strength and length of the amphiphile, the shear rate, and the film thickness.

Duke Scholars

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

October 2005

Volume

95

Issue

18

Start / End Page

188301

Related Subject Headings

  • Stress, Mechanical
  • Solvents
  • Shear Strength
  • Rotation
  • Motion
  • Models, Molecular
  • Models, Chemical
  • Micelles
  • Membranes, Artificial
  • General Physics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Arya, G., & Panagiotopoulos, A. Z. (2005). Log-rolling micelles in sheared amphiphilic thin films. Physical Review Letters, 95(18), 188301. https://doi.org/10.1103/physrevlett.95.188301
Arya, Gaurav, and Athanassios Z. Panagiotopoulos. “Log-rolling micelles in sheared amphiphilic thin films.Physical Review Letters 95, no. 18 (October 2005): 188301. https://doi.org/10.1103/physrevlett.95.188301.
Arya G, Panagiotopoulos AZ. Log-rolling micelles in sheared amphiphilic thin films. Physical review letters. 2005 Oct;95(18):188301.
Arya, Gaurav, and Athanassios Z. Panagiotopoulos. “Log-rolling micelles in sheared amphiphilic thin films.Physical Review Letters, vol. 95, no. 18, Oct. 2005, p. 188301. Epmc, doi:10.1103/physrevlett.95.188301.
Arya G, Panagiotopoulos AZ. Log-rolling micelles in sheared amphiphilic thin films. Physical review letters. 2005 Oct;95(18):188301.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

October 2005

Volume

95

Issue

18

Start / End Page

188301

Related Subject Headings

  • Stress, Mechanical
  • Solvents
  • Shear Strength
  • Rotation
  • Motion
  • Models, Molecular
  • Models, Chemical
  • Micelles
  • Membranes, Artificial
  • General Physics