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  Generation of mechanical force by grafted polyelectrolytes in an electric field

Brilliantov, N. V., Budkov, Y. A., & Seidel, C. (2016). Generation of mechanical force by grafted polyelectrolytes in an electric field. Physical Review E, 93(3): 032505. doi:10.1103/PhysRevE.93.032505.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-22BC-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-22BD-7
Genre: Journal Article

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Brilliantov, Nikolai V., Author
Budkov, Yury A., Author
Seidel, Christian1, Author              
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1Christian Seidel, Theorie & Bio-Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863325              

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 Abstract: We study theoretically and by means of molecular dynamics (MD) simulations the generation of mechanical force by grafted polyelectrolytes in an external electric field, which favors its adsorption on the grafting plane. The force arises in deformable bodies linked to the free end of the chain. Varying the field, one controls the length of the nonadsorbed part of the chain and hence the deformation of the target body, i.e., the arising force too. We consider target bodies with a linear force-deformation relation and with a Hertzian one. While the first relation models a coiled Gaussian chain, the second one describes the force response of a squeezed colloidal particle. The theoretical dependences of generated force and compression of the target body on an applied field agree very well with the results of MD simulations. The analyzed phenomenon may play an important role in future nanomachinery, e.g., it may be used to design nanovices to fix nanosized objects.

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 Dates: 2016-03-16
 Publication Status: Published in print
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 Identifiers: DOI: 10.1103/PhysRevE.93.032505
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Title: Physical Review E
  Other : Phys. Rev. E
Source Genre: Journal
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Publ. Info: Melville, NY : American Physical Society
Pages: - Volume / Issue: 93 (3) Sequence Number: 032505 Start / End Page: - Identifier: ISSN: 1539-3755