Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Ferromagnetism01:31

Ferromagnetism

2.5K
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...
2.5K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.5K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.5K
Van der Waals Interactions01:24

Van der Waals Interactions

67.2K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
67.2K
Diamagnetism01:26

Diamagnetism

2.5K
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....
2.5K
Van der Waals Equation01:10

Van der Waals Equation

4.7K
The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
4.7K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

18.3K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
18.3K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Molecular basis of DosR-dependent transcription activation in Mycobacterium tuberculosis.

Nature communications·2026
Same author

Probing Moiré Excitons in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterobilayers by Combined Micro-photoluminescence and Lateral Force Microscopy.

Nano letters·2026
Same author

[Approach to brain effect research: exploring the connection among "acupoint sensitization, mental-physical response and <i>deqi</i>" from the perspective of "feeling comfortable when acupoint is pressed"].

Zhongguo zhen jiu = Chinese acupuncture & moxibustion·2026
Same author

The use of antibiotic, probiotic, and FMT in modulating Immunotherapy Efficacy and Survival: a systematic review and meta-analysis of clinical outcomes.

The oncologist·2026
Same author

Cichorium intybus L. polysaccharide improves growth performance and colonic barrier function in weaned piglets via the microbiota-HDCA-TGR5-Akt-NF-κB signaling axis: validation by FMT and in vitro models.

Journal of animal science and biotechnology·2026
Same author

A Solid-State Near-Infrared Fluorescent Probe by a Synergistic Extended Conjugated System for Detecting Cys with Long-Term Imaging in Orthotopic Bladder Cancer.

Analytical chemistry·2026

Video Experimental Relacionado

Updated: Oct 2, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.7K

Pruebas para un multiferroico de una sola capa de van der Waals

Qian Song1,2, Connor A Occhialini1, Emre Ergeçen1

  • 1Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA.

Nature
|February 24, 2022
PubMed
Resumen

Los investigadores descubrieron el orden multiferroico tipo II en una sola capa de NiI2, un material 2D. Este hallazgo abre nuevas vías para las texturas magnéticas quirales y la ferroelectricidad en dispositivos nanoelectrónicos.

Más Videos Relacionados

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.3K
Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
12:20

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers

Published on: October 5, 2013

14.8K

Videos de Experimentos Relacionados

Last Updated: Oct 2, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.7K
A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.3K
Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
12:20

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers

Published on: October 5, 2013

14.8K

Área de la Ciencia:

  • Física de la materia condensada
  • Ciencias de los materiales
  • Nanotecnología

Sus antecedentes:

  • Los materiales multiferroicos exhiben propiedades magnéticas y eléctricas acopladas, cruciales para dispositivos avanzados.
  • Los multiferroicos de tipo II poseen acoplamiento magnetoeléctrico intrínseco, lo que permite nuevas funcionalidades.
  • Los materiales bidimensionales (2D) con propiedades multiferroicas son muy buscados para la electrónica miniaturizada.

Objetivo del estudio:

  • Para reportar el descubrimiento de orden multiferroico tipo II en una sola capa atómica de NiI2.
  • Investigar los mecanismos y las características de la multiferroicidad en los materiales 2D basados en metales de transición de van der Waals.
  • Explorar el potencial del NiI2 para aplicaciones nanoelectrónicas que aprovechan el acoplamiento magnetoeléctrico.

Principales métodos:

  • Espectroscopia Raman dicroico circular para sondear los estados básicos magnetoquirales y los modos electromagnéticos.
  • Mediciones de birefringencia y de segunda generación armónica para detectar estados electrónicos anisotrópicos.
  • Modelado teórico y simulaciones para comprender la ruptura de simetría y el orden polar.

Principales resultados:

  • Descubrimiento del orden multiferroico tipo II en la monocapa NiI2, caracterizado por una hélice de giro de tornillo adecuado.
  • Observación de la polarización eléctrica controlada por la quiralidad acoplada al orden magnético.
  • Detección de un estado electrónico altamente anisotrópico que rompe la simetría de rotación e inversión, apoyando el orden polar.
  • Confirmación de que el estado polar magnético persiste hasta el límite de la monocapa.

Conclusiones:

  • La monocapa NiI2 exhibe multiferroicidad intrínseca de tipo II, estableciendo una nueva plataforma para los fenómenos multiferroicos 2D.
  • El estudio demuestra fenómenos multiferroicos emergentes, texturas magnéticas quirales y ferroelectricidad en el límite 2D.
  • El NiI2 y los dihaluros de metales de transición relacionados ofrecen vías prometedoras para futuros dispositivos nanoelectrónicos que aprovechan el acoplamiento magnetoeléctrico.