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

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

662
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
662
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

1.1K
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
1.1K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.9K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.9K
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

1.2K
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
1.2K
Atomic Nuclei: Nuclear Spin01:08

Atomic Nuclei: Nuclear Spin

4.8K
All atomic particles possess an intrinsic angular momentum, or 'spin'. Electrons, protons, and neutrons each have a spin value of ½, although protons and neutrons in nuclei may have higher half-integer spins owing to energetic factors.
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not contribute to...
4.8K
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.4K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.4K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Links between personality functioning and post-traumatic stress disorder symptoms: a network analysis.

European journal of psychotraumatology·2026
Same author

Variation in prehospital ACS care within a single city: a bicentric observational study (MONAH-1 subgroup analysis).

BMC emergency medicine·2026
Same author

Synchronization driven acoustics: The nonlinear scattering of a self-oscillating meta-atom.

Physical review. E·2026
Same author

How personality functioning shapes symptom development during and after treatment: A random intercept cross lagged panel analysis.

Comprehensive psychiatry·2026
Same author

Long-Term Effectiveness of Inpatient and Day-Hospital Treatment of Eating Disorders in Departments of Psychosomatic Medicine and Psychotherapy in Germany.

European eating disorders review : the journal of the Eating Disorders Association·2026
Same author

A longitudinal bifactor approach to modelling somatic symptom development in psychosomatic treatment.

Journal of psychosomatic research·2026

Video Experimental Relacionado

Updated: Jan 8, 2026

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

6.0K

Resonancia de espín sin espín: un análogo de microondas

Tobias Hofmann1, Finn Schmidt1, Hans-Jürgen Stöckmann1

  • 1Philipps-Universität Marburg, Fachbereich Physik der , D-35032 Marburg, Germany, European Union.

Physical review. E
|December 23, 2025
PubMed
Resumen

Los investigadores crearon un análogo de resonancia magnética nuclear utilizando una red de microondas. Este sistema imita fenómenos de resonancia magnética, incluido el desdoblamiento de Zeeman y los marcos giratorios, manipulando las propiedades de las ondas.

Palabras clave:
resonancia magnética nuclearanálogo de microondasdesdoblamiento de Zeemansimetría simplecticamarcos giratorios

Más Videos Relacionados

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

12.1K
Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

11.8K

Videos de Experimentos Relacionados

Last Updated: Jan 8, 2026

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

6.0K
Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

12.1K
Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

11.8K

Área de la Ciencia:

  • Física
  • Mecánica cuántica
  • Ingeniería de microondas

Sus antecedentes:

  • La Resonancia Magnética Nuclear (RMN) es una técnica espectroscópica potente.
  • Los fenómenos de RMN se observan típicamente en núcleos atómicos sometidos a campos magnéticos.
  • La exploración de análogos de RMN en diferentes sistemas físicos puede revelar nuevas perspectivas y aplicaciones.

Objetivo del estudio:

  • Realizar un análogo de la Resonancia Magnética Nuclear (RMN) en una red de microondas.
  • Investigar fenómenos análogos al desdoblamiento de Zeeman y la transformación de marcos en esta red.
  • Demostrar la observación de líneas de resonancia en un campo magnético emulado.

Principales métodos:

  • Construcción de una red de microondas con simetría simplectica.
  • Acoplamiento de dos subgrafos idénticos con enlaces que introducen una diferencia de fase específica.
  • Modulación periódica de las longitudes de los enlaces para emular un campo magnético de radiofrecuencia.

Principales resultados:

  • Los valores propios de la red aparecen como dobletes de Kramers debido a la simetría simplectica.
  • Elevación de la degeneración de Kramers al desafinar las longitudes de los enlaces, análogo al desdoblamiento de Zeeman.
  • Emulación exitosa de fenómenos de RMN, incluida la transformación de marcos y las líneas de resonancia de Lorentz.

Conclusiones:

  • Una red de microondas puede emular eficazmente fenómenos clave de la Resonancia Magnética Nuclear.
  • La simetría simplectica y la modulación controlada de los enlaces son cruciales para esta emulación.
  • Este sistema análogo proporciona una plataforma novedosa para estudiar los principios de la resonancia magnética.