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

You might also read

Related Articles

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

Sort by
Same journal

Synthesis, characterization, and therapeutic evaluation of neem-extract stabilized zinc oxide nanoparticles against avian pathogenic<i>Escherichia coli</i>in broilers.

Nanotechnology·2026
Same journal

Deep-level defects and their optoelectronic impact in 2D WSe₂ heterostructures.

Nanotechnology·2026
Same journal

Waveguide-assisted plasmonic nanoparticle sensor using light scattering-based optical interrogation.

Nanotechnology·2026
Same journal

Non-local free vibration spectra of nanostructures.

Nanotechnology·2026
Same journal

Application of biochar and seed priming with zinc-oxide nanoparticles for enhancing salinity tolerance in wheat (triticum aestivum L.).

Nanotechnology·2026
Same journal

Recent advances in nanozyme-based sensors for agricultural, food, and environmental molecule sensing.

Nanotechnology·2026

Related Experiment Video

Updated: Jul 21, 2025

Using Magnetometry to Monitor Cellular Incorporation and Subsequent Biodegradation of Chemically Synthetized Iron Oxide Nanoparticles
08:13

Using Magnetometry to Monitor Cellular Incorporation and Subsequent Biodegradation of Chemically Synthetized Iron Oxide Nanoparticles

Published on: February 27, 2021

4.6K

Magnetic field sensors using VO2/Fe3O4nanoparticle devices.

Massood Tabib-Azar1

  • 1Electrical and Computer Eng. Department, University of Utah, Salt Lake City, UT 84112, United States of America.

Nanotechnology
|July 28, 2023
PubMed
Summary

This study developed a novel magnetometer by combining vanadium dioxide (VO2) and iron oxide (Fe3O4) nanoparticles. The resulting device exhibits high sensitivity and switching characteristics for magnetic field detection.

Keywords:
biomimeticmagnetometermetal-insulator transition (MIT)neuromorphic

More Related Videos

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

4.3K
Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection
15:03

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection

Published on: June 16, 2020

9.3K

Related Experiment Videos

Last Updated: Jul 21, 2025

Using Magnetometry to Monitor Cellular Incorporation and Subsequent Biodegradation of Chemically Synthetized Iron Oxide Nanoparticles
08:13

Using Magnetometry to Monitor Cellular Incorporation and Subsequent Biodegradation of Chemically Synthetized Iron Oxide Nanoparticles

Published on: February 27, 2021

4.6K
Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

4.3K
Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection
15:03

Synthesis of Functionalized Magnetic Nanoparticles, Their Conjugation with the Siderophore Feroxamine and its Evaluation for Bacteria Detection

Published on: June 16, 2020

9.3K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Vanadium dioxide (VO2) exhibits a metal-insulator transition (MIT) with significant changes in electrical resistance.
  • Iron oxide (Fe3O4) possesses unique magnetic properties, including magnetoresistance and magnetostriction.
  • Integrating materials with distinct physical properties can lead to novel sensor functionalities.

Purpose of the Study:

  • To engineer a highly sensitive magnetometer by synergistically combining the MIT properties of VO2 and the magnetic properties of Fe3O4.
  • To investigate the current-voltage characteristics and magnetic field response of the composite material.
  • To achieve large nonlinearity and switching behavior in a magnetic field sensor.

Main Methods:

  • Fabrication of a two-terminal device by drop-casting a mixture of VO2, Fe3O4 nanoparticles, and a silver paint binder.
  • Characterization of the device's current-voltage (I-V) behavior under varying external magnetic fields.
  • Analysis of magnetoresistance and magnetostriction effects in the Fe3O4 component to understand field sensitivity.

Main Results:

  • The fabricated device demonstrated current-switching behavior linked to the VO2 MIT, modulated by the external magnetic field.
  • Both magnetoresistance and magnetostriction of Fe3O4 contributed to the sensor's sensitivity.
  • High sensitivities of 1 A nT⁻¹ (or 50.8 V T⁻¹ with current bias) were achieved near the MIT voltage.
  • A minimum detectable signal of 20 pT/√Hz was obtained.

Conclusions:

  • The combination of VO2 and Fe3O4 nanoparticles successfully created a magnetometer with significant nonlinearity and switching characteristics.
  • The developed sensor leverages the distinct physical phenomena of both materials for enhanced magnetic field detection.
  • The device shows promise for applications requiring sensitive and switchable magnetic field sensing.