Lubricating medical devices with fullerene-like nanoparticles

Ohad Goldbart, Anastasia Sedova, Lena Yadgarov, Rita Rosentsveig, Dmitry Shumalinsky, Leonid Lobik, H. Daniel Wagner, Reshef Tenne

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In the present work, MoS2 nanoparticles with fullerene-like structure, and most particularly those doped with minute amounts of rhenium atoms, are used as additive to medical gels in order to facilitate their entry into constricted openings of soft material rings. This procedure is used to mimic the entry of endoscopes to constricted openings of the human body, like urethra, etc. It is shown that the Re-doped nanoparticles reduce the traction force used to retrieve the metallic lead of the endoscope from the soft ring by a factor close to three times with respect to the original gel. The mechanism of the mitigation of both friction and adhesion forces in these systems by the nanoparticles is discussed.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalTribology Letters
Volume55
Issue number1
DOIs
StatePublished - 1 Jan 2014
Externally publishedYes

Keywords

  • Endoscope
  • Fullerene-like nanoparticles
  • Tribology
  • Urology

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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