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

Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

1.4K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels.  Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
1.4K
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

604
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
604
The de Broglie Wavelength02:32

The de Broglie Wavelength

25.2K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.2K
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

614
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
614

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Dynamics of CO<sub>2</sub> activation by gas-phase transition metal ions: the importance of intersystem crossing.

Physical chemistry chemical physics : PCCP·2026
Same author

Double Rotational Rainbows in Collisions of Homonuclear Diatoms Stemming from Steric Charge Transfer.

Journal of the American Chemical Society·2026
Same author

Full-dimensional potential energy surface for the H2 + N2 system and quantum scattering calculations of collision-induced rotational energy transfer.

The Journal of chemical physics·2026
Same author

The effect of adsorbate induced surface strain on oxygen island formation on platinum surfaces.

Faraday discussions·2026
Same author

Real-Time Coupled Electron-Nuclear Dynamics of Chemical Bond Formation on a Semiconductor Surface.

Journal of the American Chemical Society·2026
Same author

Quantum interference between direct and indirect reaction paths in the photodissociation of HOD.

Nature chemistry·2026

Video Experimental Relacionado

Updated: May 25, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.3K

Interferencia cuántica observada en el estado resuelto de dispersión de moléculas en la superficie

Christopher S Reilly1, Daniel J Auerbach2, Liang Zhang3

  • 1Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Science (New York, N.Y.)
|February 27, 2025
PubMed
Resumen
Este resumen es generado por máquina.

La mecánica cuántica gobierna las colisiones molécula-superficie. Los investigadores observaron interferencias destructivas en las colisiones de metano con oro, revelando el impacto de las simetrías discretas en la dinámica molecular.

Más Videos Relacionados

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.4K
Analysis of Complex Molecules and Their Reactions on Surfaces by Means of Cluster-Induced Desorption/Ionization Mass Spectrometry
07:53

Analysis of Complex Molecules and Their Reactions on Surfaces by Means of Cluster-Induced Desorption/Ionization Mass Spectrometry

Published on: March 1, 2020

7.1K

Videos de Experimentos Relacionados

Last Updated: May 25, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.3K
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.4K
Analysis of Complex Molecules and Their Reactions on Surfaces by Means of Cluster-Induced Desorption/Ionization Mass Spectrometry
07:53

Analysis of Complex Molecules and Their Reactions on Surfaces by Means of Cluster-Induced Desorption/Ionization Mass Spectrometry

Published on: March 1, 2020

7.1K

Área de la Ciencia:

  • Ciencias de la superficie
  • La mecánica cuántica
  • Dinámica molecular

Sus antecedentes:

  • Las colisiones moleculares con superficies son eventos mecánicos cuánticos complejos.
  • Los efectos de descoherencia a menudo ocultan la naturaleza ondulante de estas colisiones.
  • El desacoplamiento parcial del movimiento molecular puede revelar interferencia.

Objetivo del estudio:

  • Para investigar la interferencia cuántica en las colisiones molécula-superficie.
  • Para demostrar el papel de las simetrías discretas en la dinámica de colisión.
  • Para sondear la dispersión de metano desde una superficie de oro.

Principales métodos:

  • Medidas preparadas por el estado y medidas resueltas por el estado.
  • Experimentos de dispersión que involucran metano y una superficie de oro.
  • Análisis de patrones de interferencia en los estados moleculares.

Principales resultados:

  • Se observó una interferencia destructiva total entre los estados moleculares.
  • Los efectos de interferencia fueron prominentes a pesar del intercambio de impulso.
  • La interferencia de alto contraste persistió en las colisiones excitadas por vibración e inelásticas.

Conclusiones:

  • Las simetrías discretas juegan un papel distinto en la dinámica de colisión molecular cuántica.
  • Los efectos de interferencia cuántica se pueden observar en la dispersión de la superficie de la molécula.
  • Estos hallazgos resaltan la naturaleza cuántica de las interacciones moleculares con las superficies.