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

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

2.4K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
2.4K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

553
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
553
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

463
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
463
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

221
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
221
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

244
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
244
Atomic Spectroscopy: Absorption, Emission, and Fluorescence01:23

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

1.2K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
1.2K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Dichography: two-frame ultrafast imaging from a single diffraction pattern.

Nature communications·2026
Same author

Orbital-resolved imaging of coherent femtosecond exciton dynamics in coupled molecules.

Nature communications·2026
Same author

A precision apparatus for high harmonic spectroscopy in bulk solids.

The Review of scientific instruments·2026
Same author

Trajectory excited-state dynamics study of pyrazine: Assessment of potential energy surfaces and simulation of picosecond timescales.

The Journal of chemical physics·2026
Same author

Attosecond physics in optical near fields.

Nature physics·2025
Same author

Performance of neonatal calves fed kitchen herbs and probiotics dissolved in whole milk up to weaning age.

Iranian journal of veterinary research·2025
Same journal

Harmonizing standards and resources for the medical genome.

Nature·2026
Same journal

Towards the construction of a virtual yeast.

Nature·2026
Same journal

Aerosols and hydrocarbons in the atmosphere of a white dwarf planet.

Nature·2026
Same journal

TROP2 targeting reveals therapy-driven cell state dynamics in colorectal cancer.

Nature·2026
Same journal

Competing programs shape cortical sensorimotor-association axis development.

Nature·2026
Same journal

Steatosis shapes prognosis-defining liver metastasis heterogeneity in CRC.

Nature·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Aug 12, 2025

Preparing a Celadonite Electron Source and Estimating Its Brightness
09:14

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

4.6K

Emisión de campo en atotsegundos

H Y Kim1, M Garg2, S Mandal1

  • 1Institut für Physik, Universität Rostock, Rostock, Germany.

Nature
|January 25, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores midieron los pulsos de electrones de un segundo emitidos por nanotipos de tungsteno utilizando transitorios de luz intensos. Este avance permite la observación en tiempo real de la dinámica de los electrones para aplicaciones avanzadas de imágenes y física de atosecondas.

Más Videos Relacionados

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.7K
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

7.6K

Videos de Experimentos Relacionados

Last Updated: Aug 12, 2025

Preparing a Celadonite Electron Source and Estimating Its Brightness
09:14

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

4.6K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.7K
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

7.6K

Área de la Ciencia:

  • Física del atosecundo
  • Las nano-ópticas
  • Emisión de electrones

Sus antecedentes:

  • La emisión de electrones de campo es crucial para el procesamiento de señales de alta frecuencia y las imágenes a escala atómica.
  • Los avances en la microscopía electrónica requieren técnicas para el confinamiento subfemtosecundo y el examen de la emisión de campo.
  • Los pulsos láser intensos han logrado el confinamiento de femtosegundos de la emisión del campo óptico de los metales nanoestructurados.

Objetivo del estudio:

  • Desarrollar técnicas para la medición de pulsos de electrones por segundo.
  • Para investigar la dinámica en tiempo real de la emisión de campo óptico.
  • Para explorar la nanoescala cerca de los campos y las propiedades del pulso de electrones.

Principales métodos:

  • Utilizó transientes de luz de subciclo intensos para inducir la emisión de campo óptico de los nanotipos de tungsteno.
  • Empleado una débil réplica de la luz transitoria para sondear la dinámica de emisión en tiempo real.
  • Propiedades temporales medidas de los pulsos de electrones rescatados, incluida la duración y el chirrido.

Principales resultados:

  • Se han generado y medido con éxito pulsos de electrones de 53 ± 5 attosegundos de duración.
  • Caracterizó el chirrido de los pulsos de electrones.
  • Proporcionó la exploración directa de la nanoescala cerca de los campos.

Conclusiones:

  • El estudio demuestra la capacidad de medir pulsos de electrones en un segundo, un desafío de larga data.
  • Esta técnica abre nuevas vías para la investigación en la física del attosegundo y la nano-óptica.
  • Permite una visión sin precedentes de la dinámica de los electrones en una escala de tiempo de un segundo.