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

Paramagnetism01:30

Paramagnetism

2.9K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.9K
Ferromagnetism01:31

Ferromagnetism

2.9K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.9K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

2.2K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
2.2K

You might also read

Related Articles

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

Sort by
Same author

Induction heating applied to anisole HDO using formic acid as a hydrogen source.

Catalysis science & technology·2025
Same author

A writing protocol with ambiguity resilience in nanoscale systems.

The Journal of chemical physics·2025
Same author

Preclinical Development of Magnetic Nanoparticles for Hyperthermia Treatment of Pancreatic Cancer.

ACS applied materials & interfaces·2025
Same author

Assessing the parameters modulating optical losses of iron oxide nanoparticles under near infrared irradiation.

Nanoscale advances·2022
Same author

Synergistic immunomodulatory effect in macrophages mediated by magnetic nanoparticles modified with miRNAs.

Nanoscale·2022
Same author

Fine Control of In Vivo Magnetic Hyperthermia Using Iron Oxide Nanoparticles with Different Coatings and Degree of Aggregation.

Pharmaceutics·2022

Related Experiment Video

Updated: Dec 27, 2025

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating
08:04

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Published on: February 20, 2016

14.1K

Heat Generation in Single Magnetic Nanoparticles under Near-Infrared Irradiation.

Héctor Rodríguez-Rodríguez1,2, Gorka Salas1,3, J Ricardo Arias-Gonzalez4

  • 1Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanoscience), Cantoblanco 28049, Madrid, Spain.

The Journal of Physical Chemistry Letters
|March 3, 2020
PubMed
Summary

Researchers measured heat from single iron oxide nanoparticles using optical tweezers. They tracked medium viscosity changes to determine temperature, offering new nanoscale insights into nanoparticle heat generation.

More Related Videos

Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy
09:01

Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy

Published on: May 22, 2020

3.4K
Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
08:52

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Published on: April 30, 2018

8.5K

Related Experiment Videos

Last Updated: Dec 27, 2025

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating
08:04

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Published on: February 20, 2016

14.1K
Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy
09:01

Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy

Published on: May 22, 2020

3.4K
Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
08:52

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Published on: April 30, 2018

8.5K

Area of Science:

  • Nanotechnology
  • Biomedicine
  • Materials Science

Background:

  • Investigating localized heat generation in pointlike nanostructures is crucial for nanotechnology and biomedicine.
  • Iron oxide nanoparticles are utilized in hyperthermia treatments, absorbing energy from magnetic or near-infrared fields.
  • Accurate temperature determination around individual iron oxide nanoparticles presents a significant challenge.

Discussion:

  • This study employs optical tweezers to individually analyze heat release from iron oxide nanostructures under near-infrared illumination.
  • Temperature is indirectly measured by monitoring changes in surrounding medium viscosity relative to illuminating power.
  • This method circumvents the need for direct thermal probes, offering a novel approach to nanoscale thermometry.

Key Insights:

  • Successfully quantified heat generation from single iron oxide nanoparticles.
  • Demonstrated a new technique for nanoscale temperature measurement via viscosity changes.
  • Provided a framework for understanding temperature as a statistical parameter at the nanoscale.

Outlook:

  • Potential applications in targeted drug delivery and advanced hyperthermia therapies.
  • Further exploration of nanoparticle-mediated thermal effects in biological systems.
  • Development of more sophisticated nanoscale thermal sensing techniques.