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

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

174
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
174

You might also read

Related Articles

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

Sort by
Same author

Controlled Formation and Flowability of Clathrate Hydrate Suspensions from Frozen Emulsions.

ACS applied materials & interfaces·2026
Same author

Enhancing the Spinnability of Cellulose-Based Textile Waste by Doping with High Molecular Weight Bacterial Cellulose.

Biomacromolecules·2026
Same author

Analysis of the Flow Behavior of Mechanically Fibrillated Cellulose Nanofibril Suspension by the Rheo-Polarized Imaging Technique (Rheo-Iris).

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Rheological, electrochemical, and microstructural properties of graphene oxides as flowable electrodes for energy storage applications.

RSC advances·2025
Same author

Correction to "Shear-Thinning Nanocomposite Hydrogels for the Treatment of Hemorrhage".

ACS nano·2025
Same author

Mussel-inspired cross-linking mechanisms enhance gelation and adhesion of multifunctional mucin-derived hydrogels.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same journal

Correction: Effect of external salt solution concentration on carboxyl dissociation degree (<i>α</i>) and p<i>K</i><sub>a</sub> of weak polyelectrolyte membranes for sustainable technologies.

Soft matter·2026
Same journal

Anomalous dewetting dynamics in active entangled polymer films: flexible chains.

Soft matter·2026
Same journal

Electrorheology of the suspensions of oblate poly(ionic liquid) ellipsoids.

Soft matter·2026
Same journal

Nanopore sequencing with proteins: synchronization and dischronization of molecular dynamics simulations with laboratory and industrial developments.

Soft matter·2026
Same journal

Catanionics from biosurfactants and regular surfactants: miscibility and structure.

Soft matter·2026
Same journal

Adhesives with a thickness smaller than the fractocohesive length enhance adhesion.

Soft matter·2026
See all related articles

Related Experiment Video

Updated: Jul 29, 2025

Force-Clamp Rheometry for Characterizing Protein-based Hydrogels
09:55

Force-Clamp Rheometry for Characterizing Protein-based Hydrogels

Published on: August 21, 2018

7.0K

Rod-climbing rheometry revisited.

Rishabh V More1, Reid Patterson2, Eugene Pashkovski2

  • 1Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. gareth@mit.edu.

Soft Matter
|May 26, 2023
PubMed
Summary
This summary is machine-generated.

This study quantifies normal stress differences in polymer solutions using rotating rod rheometry. It shows this method accurately measures elasticity even when fluids descend the rod, suggesting a broader application for complex fluid analysis.

More Related Videos

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
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

3.2K

Related Experiment Videos

Last Updated: Jul 29, 2025

Force-Clamp Rheometry for Characterizing Protein-based Hydrogels
09:55

Force-Clamp Rheometry for Characterizing Protein-based Hydrogels

Published on: August 21, 2018

7.0K
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
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

3.2K

Area of Science:

  • Rheology of complex fluids
  • Polymer physics
  • Fluid mechanics

Background:

  • The rod-climbing (Weissenberg) effect demonstrates elasticity in polymeric fluids.
  • This phenomenon depends on rotation rate, fluid elasticity, surface tension, and inertia.
  • Previous methods for measuring normal stress differences had limitations in reconciling experimental observations with modern rheometer capabilities.

Purpose of the Study:

  • To quantitatively reconcile rod-climbing experiments with modern torsional rheometer measurements.
  • To precisely measure both the first (Ψ₁,₀) and second (Ψ₂,₀) normal stress difference coefficients for polymer solutions.
  • To investigate the influence of inertial effects on the rod-climbing phenomenon and develop a more general rheometric approach.

Main Methods:

  • Combined rod-climbing experiments with small amplitude oscillatory shear (SAOS) and steady shear measurements.
  • Solved equations of motion in the low rotation rate limit for a second-order fluid.
  • Incorporated inertial terms to analyze fluid behavior beyond simple rod-climbing.

Main Results:

  • Quantified Ψ₁,₀ and Ψ₂,₀ for polymer solutions by integrating rod-climbing with commercial rheometer data.
  • Demonstrated that the climbing constant (κ = 0.5Ψ₁,₀ + 2Ψ₂,₀) can be measured even when fluids exhibit rod descending.
  • Developed a climbing condition based on elasticity and inertia competition, accurately predicting rod-climbing or descending behavior.

Conclusions:

  • Rotating rod rheometry, combined with SAOS measurements, is effective for measuring normal stress differences in complex fluids at low shear rates.
  • The method is less restrictive than traditional rod-climbing and can be described more broadly as 'rotating rod rheometry'.
  • This approach offers a valuable tool for characterizing complex fluids, particularly at shear rates below the sensitivity limits of commercial rheometers.