Prevention of edge fracture using a nontoxic liquid metal sealant

San To Chan, Simon J. Haward, Amy Q. Shen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Edge fracture, the sudden indentation of a viscoelastic fluid's free surface, often occurs when a sufficiently strong shear is applied to the fluid, rendering rheological measurements at high shear rates difficult. We show that sealing the fluid sample's free surface with the nontoxic liquid metal Galinstan can delay fracture occurrence, extending the measurable shear rate range of a cone-and-plate fixture by a decade. The method's effectiveness is compared to the cone-partitioned plate fixture, an existing tool for mitigating the adverse effects of sample fracture. Our cheap yet effective way to prevent edge fracture will benefit the general rheological study of complex fluids.

Original languageEnglish (US)
Article number011704
JournalPhysics of Fluids
Issue number1
StatePublished - Jan 2023

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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