Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Chen, M.; Briscoe, W.H.; Armes, S.P.; Klein, J. (2009)
Publisher: American Association for the Advancement of Science
Languages: English
Types: Article
The very low sliding friction at natural synovial joints, which have friction coefficients of mu < 0.002 at pressures up to 5 megapascals or more, has to date not been attained in any human-made joints or between model surfaces in aqueous environments. We found that surfaces in water bearing polyzwitterionic brushes that were polymerized directly from the surface can have m values as low as 0.0004 at pressures as high as 7.5 megapascals. This extreme lubrication is attributed primarily to the strong hydration of the phosphorylcholine-like monomers that make up the robustly attached brushes, and may have relevance to a wide range of human-made aqueous lubrication situations.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • C. W. McCutchen, Fed. Proc. 25, 1061 (1966).
    • D. Swann, K. J. Bloch, D. Swindell, E. Shore, Arthritis and Rheumatism 27, 552 (1984).
    • A. N. M. Forster, J. W. Mays, S. M. Kilbey, J. Polymer Sci.: Pt. B: Polymer Physics 44, 649 (2006).
    • J. Klein, E. Kumacheva, D. Mahalu, D. Perahia, L. Fetters, Nature 370, 634 (1994).
    • U. Raviv et al., Nature 425, 163 (2003).
    • P. Schorr, T. Kwan, M. Kilbey, S. G. Shaqfeh, M. Tirrell, Macromolecules 36, 389 (2003).
    • J. P. Gong et al., J. Am. Chem. Soc. 123, 5582 (2001).
    • D. Gourdon et al., Langmuir 24, 1534 (2008).
    • S. Lee, N. D. Spencer, Science 319, 575 (2008).
    • U. Raviv, J. Klein, Science 297, 1540 (2002).
    • W. H. Briscoe et al., Nature 444, 191 (2006).
    • M. Chen, W. H. Briscoe, S. P. Armes, H. Cohen, J. Klein, ChemPhysChem 8, 1303 (2007).
    • J. Klein, E. Kumacheva, J. Chem. Phys. 108, 6996 (1998).
    • This robustness is consistent with the nature of the pMPC brushes attachment to the mica and the shear forces applied. For an area per macroinitiator Am ≈ 16 nm2 (13) T. Witten, L. Leibler, P. Pincus, Macromolecules 23, 824 (1990).
    • R. Tadmor, J. Janik, L. J. Fetters, J. Klein, Phys. Rev. Lett. 91, 115503 (2003).
    • E. A. Disalvo et al., J. Argent. Chem. Soc. 92, 1 (2004).
    • M. Yaseen, J. R. Lu, Langmuir 22, 5825 (2006).
    • G. Pabst, M. Rappolt, H. Amenitsch, P. Laggner, Phys. Rev. E 62, 4000 (2000).
    • J. F. Nagle et al., Biophysical J. 70, 1419 (1996).
    • K. Ishihara et al., J Biomed Mater Res 39, 323 (1998).
    • L. J. Lis, M. McAlister, N. Fuller, R. P. Rand, V. A. Parsegian, Biophysical J. 37, 657 (1982).
    • With brushes µ < 0.001
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

Share - Bookmark

Cite this article