Maximum strength for intermolecular adhesion of nanospheres at an optimal size

Haimin Yao, Pradeep Guduru, Huajian Gao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Previous studies have emphasized that the adhesion strength between solid objects tends to increase as the characteristic size of the objects decreases and eventually saturates at the theoretical adhesion strength below a critical size scale. Here we show that the adhesion strength between two spheres or between a sphere and a solid half-space actually exhibits a peak value at an optimal size. This optimal size arises owing to a transition between surface- and bulk-dominated interaction regimes at the nanoscale.
Original languageEnglish
Pages (from-to)1363-1370
Number of pages8
JournalJournal of the Royal Society Interface
Issue number28
Publication statusPublished - 6 Nov 2008
Externally publishedYes


  • Adhesion strength
  • Contact mechanics
  • Intermolecular adhesion
  • Nanoscale
  • Size dependence

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Bioengineering
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering

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