Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

160
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
160

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Microfluidic extensional flow device to study mass transfer dynamics in the polymer microparticle formation process.

Soft matter·2024
Same author

Fibrous hydrogels under biaxial confinement.

Nature communications·2022
Same author

Substrate colonization by an emulsion drop prior to spreading.

Nature communications·2021
Same author

3D Printing of Vascular Tubes Using Bioelastomer Prepolymers by Freeform Reversible Embedding.

ACS biomaterials science & engineering·2021
Same author

Interfacial Tension of the Water-Diluted Bitumen Interface at High Bitumen Concentrations Measured Using a Microfluidic Technique.

Langmuir : the ACS journal of surfaces and colloids·2019
Same author

Mass transfer dynamics in the dissolution of Taylor bubbles.

Soft matter·2019

Related Experiment Video

Updated: Jun 25, 2025

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix
09:13

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix

Published on: July 10, 2020

3.1K

Low yield stress measurements with a microfluidic rheometer.

Durgesh Kavishvar1, Arun Ramachandran1

  • 1Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada. arun.ramchandran@utoronto.ca.

Lab on a Chip
|May 23, 2024
PubMed
Summary

This study introduces a microfluidic device for measuring low yield stress (τy) in complex fluids. The Hele-Shaw microfluidic extensional flow device (MEFD) accurately quantifies τy in materials like blood and gels.

More Related Videos

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes
08:42

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes

Published on: April 10, 2017

20.0K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.0K

Related Experiment Videos

Last Updated: Jun 25, 2025

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix
09:13

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix

Published on: July 10, 2020

3.1K
Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes
08:42

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes

Published on: April 10, 2017

20.0K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.0K

Area of Science:

  • Rheology
  • Microfluidics
  • Complex Fluids

Background:

  • Yield stress (τy) is crucial for complex materials but difficult to measure below 1 Pa.
  • Existing methods are limited for low τy measurements.

Purpose of the Study:

  • To present a novel Hele-Shaw microfluidic extensional flow device (MEFD) for measuring low yield stress.
  • To validate the MEFD against standard rheometry and demonstrate its versatility.

Main Methods:

  • Utilizing a Hele-Shaw microfluidic extensional flow device (MEFD).
  • Employing scaling analysis based on Hele-Shaw linear extensional flow to deduce τy from the unyielded region size.
  • Validating measurements with Carbopol solutions, human blood, mucus simulant, and lactic drink.

Main Results:

  • The MEFD successfully measured low apparent yield stress (τy) down to ~10 mPa.
  • Measurements of Carbopol solutions, human blood (30-80 mPa), mucus simulant (~0.7 Pa), and lactic drink (~7 mPa) were consistent.
  • The technique's lower limit is 5 mPa, with potential for extension to 10⁻⁴ Pa.

Conclusions:

  • The MEFD provides a rapid and accurate method for measuring low yield stress in complex fluids.
  • This technique is versatile and applicable to biological and industrial fluids.
  • The MEFD enables real-time assessment of yield stress.