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

Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

6.8K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
6.8K
IR Spectrometers01:25

IR Spectrometers

3.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
3.1K
IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

2.1K
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
2.1K
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

1.5K
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
1.5K
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

1.9K
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
1.9K
Determination of Crystal Structures01:29

Determination of Crystal Structures

135
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
135

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Response to van Assen et al.

Bone marrow transplantation·2001
Same author

Manifestation of anisotropy persistence in the hierarchies of magnetohydrodynamical scaling exponents

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Persistence of small-scale anisotropies and anomalous scaling in a model of magnetohydrodynamics turbulence

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Expression of Cell Cycle Regulating Proteins in an Unusual Transformation of Mantle Cell Lymphoma.

Leukemia & lymphoma·2000
Same author

Photoregulation of the DNA Polymerase Reaction by Oligonucleotides Bearing an Azobenzene We should like to thank Professor Kazunari Taira for valuable comments. This work was partially supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, and Culture, Japan (Molecular Synchronization for Design of New Materials System). The support of the grant from the "Research for the Future" Program of the Japan Society for the Promotion of Science (JSPS-RFTF97I00301) is also acknowledged.

Angewandte Chemie (International ed. in English)·2000
Same author

Step by step filter based program for calculations of highly informative derivative curves

Computers & chemistry·2000

Video Experimental Relacionado

Updated: May 2, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

11.4K

Un detector de un solo fotón en el infrarrojo lejano.

Komiyama1, Astafiev, Antonov

  • 1Department of Basic Science, University of Tokyo, Japan. csusumu@ASone.c.u.-tokyo.ac.jp

Nature
|February 10, 2000
PubMed
Resumen

Los investigadores desarrollaron un nuevo transistor de un solo electrón capaz de detectar fotones individuales de infrarrojo lejano. Este avance ofrece una sensibilidad sin precedentes, avanzando la investigación espectroscópica en esta región espectral crucial.

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

7.0K
Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

8.0K

Videos de Experimentos Relacionados

Last Updated: May 2, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

11.4K
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.0K
Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

8.0K

Área de la Ciencia:

  • La espectroscopia es una técnica de espectroscopia.
  • La electrónica cuántica es la electrónica cuántica.
  • La fotónica es la fotónica.

Sus antecedentes:

  • La región espectral del infrarrojo lejano (FIR) (10 microm-1 mm) es vital para la espectroscopia de rotación molecular y la espectroscopia vibratoria sólida / líquida / gaseosa.
  • Las tecnologías actuales de detección de FIR, incluidos los bolómetros superconductores, carecen de la sensibilidad para la detección de un solo fotón, lo que dificulta la investigación.
  • Las regiones visibles e infrarrojas cercanas logran el conteo de un solo fotón con tubos fotomultiplicadores, destacando una brecha en las capacidades de FIR.

Objetivo del estudio:

  • Desarrollar un detector altamente sensible para fotones individuales de infrarrojo lejano (FIR).
  • Para superar las limitaciones de los detectores FIR existentes y permitir el conteo de un solo fotón en este rango espectral.
  • Mejorar los estudios espectroscópicos proporcionando un nuevo nivel de sensibilidad en la región FIR.

Principales métodos:

  • Utilizó un transistor de un solo electrón (SET) basado en un punto cuántico semiconductor en un campo magnético alto.
  • Operó el detector en el rango de longitudes de onda del infrarrojo lejano de 175-210 micras (6.0-7.1 meV).
  • Flujo de fotones medido con una resolución de tiempo de un milisegundo sobre un área efectiva del detector de 0,1 mm2.

Principales resultados:

  • Logró la detección de fotones individuales en el infrarrojo lejano.
  • Demostró una sensibilidad sin precedentes, detectando un flujo incidente de 0,1 fotones por segundo, superando los valores anteriores en más de 10.000 veces.
  • Se observó un nuevo mecanismo de detección en el que un solo fotón absorbido genera una corriente de 10^6-10^12 electrones a través del punto cuántico.

Conclusiones:

  • El transistor de un solo electrón de punto cuántico de semiconductor desarrollado representa un avance significativo en la tecnología de detectores de infrarrojo lejano.
  • Este nuevo detector logra una sensibilidad de un solo fotón, abriendo nuevas vías para la espectroscopia de alta resolución y la investigación física fundamental en el FIR.
  • El mecanismo de detección no convencional ofrece una vía para la detección de fotones ultra-sensibles a través de varios rangos espectrales.