Micro- and nanorheology

Ashis Mukhopadhyay, Steve Granick

Research output: Contribution to journalReview articlepeer-review


'Microrheology', the determination of viscoelastic properties of soft media from the observed motion of microscopic-sized tracer particles, has undergone a recent surge of development because it allows access to an unprecedented range of frequency response with unprecedented spatial resolution. Several complementary techniques have been developed, but discrepancies have been found among different experiments especially in complex systems, and the validity of interpretation is under debate. 'Nanorheology' after explicit confinement of samples to variables thickness, 1 nm to 1 μm, is also enjoying rapid development, particularly nanorheology integrated with spectroscopy. Developments, limitations, and opportunities are discussed.

Original languageEnglish (US)
Pages (from-to)423-429
Number of pages7
JournalCurrent Opinion in Colloid and Interface Science
Issue number5-6
StatePublished - 2001
Externally publishedYes


  • Microrheology
  • Nanorheology
  • Soft matter spectroscopy
  • Viscoelastic

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces


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