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

Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Motional Emf01:22

Motional Emf

Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the magnetic...
Ferromagnetism01:31

Ferromagnetism

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...
Paramagnetism01:30

Paramagnetism

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...
MOS Capacitor01:25

MOS Capacitor

A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...

You might also read

Related Articles

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

Sort by
Same author

Eutectic Urea Phosphate Suppresses Phase Segregation in Wide-Bandgap Photovoltaic Perovskites.

Angewandte Chemie (International ed. in English)·2026
Same author

Probing the quantum metric of 3D topological insulators.

Nature materials·2026
Same author

KNLR: A heterogeneous ensemble learner for predicting Foie gras weight grade in mule ducks (Anas platyrhynchos × Cairina moschata).

Poultry science·2026
Same author

Correction: The association between the cardiac metabolic index and rapid kidney function decline and CKD in individuals with different glucose metabolism statuses: results from the China health and retirement longitudinal study.

Lipids in health and disease·2026
Same author

Strain Tuning of Weyl Nodes in SrRuO<sub>3</sub> Membranes.

Nano letters·2026
Same author

Longitudinal associations between intergenerational education and sarcopenia: The role of reverse influence and psychosocial mediation.

Acta psychologica·2025

Related Experiment Video

Updated: Jun 28, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Large Positive Magnetoconductance in Carbon Nanoscrolls.

Yu-Jie Zhong1,2, Jia-Cheng Li2,3, Xuan-Fu Huang1,2

  • 1Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan.

Nano Letters
|March 28, 2025
PubMed
Summary

Carbon nanoscrolls exhibit significant positive magnetoconductance when subjected to an axial magnetic field. This effect, driven by unique zero-energy modes, enhances conductance in curved graphene systems.

Keywords:
Aharonov−Bohm effectinterfacial magnetic stateslongitudinal magnetic fieldradial superlattice

More Related Videos

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons
09:54

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Published on: July 14, 2021

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

Related Experiment Videos

Last Updated: Jun 28, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons
09:54

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Published on: July 14, 2021

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

Area of Science:

  • Condensed matter physics
  • Materials science
  • Nanotechnology

Background:

  • Carbon nanoscrolls are spirally wrapped graphene layers.
  • Graphene-based materials are explored for electronic applications.
  • Magnetoresistance is a key phenomenon in electronic materials.

Purpose of the Study:

  • To theoretically demonstrate positive magnetoconductance in carbon nanoscrolls.
  • To investigate the effect of magnetic fields on nanoscroll conductance.
  • To explore the robustness of this phenomenon in imperfect nanoscrolls.

Main Methods:

  • Theoretical modeling of carbon nanoscrolls.
  • Simulation of ballistic conductance under axial magnetic fields.
  • Analysis of zero-energy modes induced by magnetic fields.

Main Results:

  • Carbon nanoscrolls show a large positive magnetoconductance (up to 200% increase).
  • This effect is robust against disorder and interturn misalignment.
  • Positive magnetoconductance is linked to magnetic-field-induced zero-energy modes.

Conclusions:

  • Carbon nanoscrolls are a promising platform for magnetoresistive phenomena.
  • Curved graphene systems offer new avenues for electronic device development.
  • The discovered magnetoconductance is a unique property of rolled-up geometries.