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 Experiment Videos

A magnetocaloric pump for microfluidic applications.

Lonnie J Love1, John F Jansen, Timothy E McKnight

  • 1Robotics and Energetic Systems Group, Oak Ridge National Laboratory, Oak Ridge, TN 37922, USA. lovelj@ornl.gov

IEEE Transactions on Nanobioscience
|September 24, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Mineralization of calcium carbonate by cave bacteria.

Bioresource technology·2026
Same author

Carbonate mineral precipitation induced by microorganisms enriched from the cave water and biofilm in a lime-decorated lava tube.

Scientific reports·2025
Same author

Spatial modeling for radon concentrations in subway stations in Seoul, Korea.

Environmental science. Processes & impacts·2021
Same author

Effective cesium removal from Cs-containing water using chemically activated opaline mudstone mainly composed of opal-cristobalite/tridymite (opal-CT).

Scientific reports·2021
Same author

Corrigendum: Effect of Divalent Cations (Cu, Zn, Pb, Cd, and Sr) on Microbially Induced Calcium Carbonate Precipitation and Mineralogical Properties.

Frontiers in microbiology·2021
Same author

The Evolution Pathway of Ammonia-Oxidizing Archaea Shaped by Major Geological Events.

Molecular biology and evolution·2021
Same journal

A Transparent, Microfluidic Lab On A Chip For Multi-Modal Cell Culture Monitoring For Neurotoxicity Research.

IEEE transactions on nanobioscience·2026
Same journal

Investigating Effect of Dimensional Variance on Separation of Glomerular Ultrafiltrate in a Microfluidic Environment.

IEEE transactions on nanobioscience·2026
Same journal

Green synthesis of multifunctional ZnFe<sub>2</sub>O<sub>4</sub>-MWCNT-Cellulose acetate nanocomposite for peroxidase enzyme immobilization.

IEEE transactions on nanobioscience·2026
Same journal

IoT-Enabled SnO₂-Based Humidity Sensor for Real-Time Monitoring in Neonatal Incubators.

IEEE transactions on nanobioscience·2026
Same journal

Electrokinetic and Antibiofilm Effects of Silver Nanoparticles Combined with Imipenem Against multidrug-resistant of Klebsiella pneumoniae.

IEEE transactions on nanobioscience·2026
Same journal

Bio-inspired Optofluidic Molecular Communication with Photothermally Actuated Microrobot Swarms.

IEEE transactions on nanobioscience·2026
See all related articles

A novel magnetocaloric pump uses advanced magnetic nanoparticles to achieve fluid propulsion without moving parts. This technology offers an order of magnitude increase in flow rate for ferrofluids, enabling microfluidic applications.

Area of Science:

  • Materials Science
  • Fluid Dynamics
  • Nanotechnology

Background:

  • Magnetocaloric pumps utilize thermal and magnetic fields for fluid propulsion.
  • Conventional materials had limitations in magnetic and thermal properties, restricting pressure gradients.
  • Advancements in metal-substituted magnetite enable control over magnetic nanoparticle properties.

Purpose of the Study:

  • To describe the magnetocaloric pump principle and previous material limitations.
  • To review magnetic nanoparticle synthesis and introduce a novel bacterial approach.
  • To develop and validate a finite-element model for magnetocaloric pumps.

Main Methods:

  • Review of existing magnetic nanoparticle synthesis.
  • Introduction of a new synthesis method using thermophilic bacteria.

Related Experiment Videos

  • Development of constitutive equations and finite-element modeling.
  • Experimental validation of the model and property comparison of two compounds.

    • Main Results:

    • Demonstrated significant variation in magnetic and thermal properties between two compounds.
    • Validated a finite-element model against experimental data.
    • Achieved an order of magnitude increase in fluid flow rate compared to conventional ferrofluids below 80°C.

    Conclusions:

    • Magnetocaloric pumps show significant potential for fluid propulsion with enhanced flow rates.
    • Novel magnetic nanoparticles and synthesis methods overcome previous limitations.
    • The technology is suitable for microfluidic applications, such as lab-on-a-chip devices.