Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

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...

Molecular Spectroscopy: Absorption and Emission

Molecular Spectroscopy: Absorption and Emission

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.

Interaction of EM Radiation with Matter: Spectroscopy

Interaction of EM Radiation with Matter: Spectroscopy

Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...

Spectrophotometry: Introduction

Spectrophotometry: Introduction

Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...

Atomic Emission Spectroscopy: Overview

Atomic Emission Spectroscopy: Overview

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Long-lived polaritonic coherence and polaron decoupling effects in 2D electronic spectra.

Proceedings of the National Academy of Sciences of the United States of America·2026

Same author

Co-designed pre-capture privacy optics for computer vision.

Optics express·2025

Same author

Polariton spectra under the collective coupling regime. II. 2D non-linear spectra.

The Journal of chemical physics·2025

Same author

Polariton spectra under the collective coupling regime. I. Efficient simulation of linear spectra and quantum dynamics.

The Journal of chemical physics·2025

Same author

Mechanism of Molecular Polariton Decoherence in the Collective Light-Matter Couplings Regime.

The journal of physical chemistry letters·2024

Same author

Cavity Controlled Upconversion in CdSe Nanoplatelet Polaritons.

ACS nano·2024

Search research articles

Related Experiment Video

Updated: Jun 24, 2026

UV-Vis Spectroscopic Characterization of Nanomaterials in Aqueous Media

UV-Vis Spectroscopic Characterization of Nanomaterials in Aqueous Media

Published on: October 25, 2021

Spectroscopic properties unique to nano-emitters.

Andrew G Walsh¹, Wolfgang Bacsa, A Nickolas Vamivakas

¹Department of Physics, Boston University, Boston, Massachusetts 02215, USA.

|April 16, 2009

Summary

Individual carbon nanotubes exhibit unique light emission properties, differing from larger emitters. Their spectral position and line width are influenced by their nanoscale dimensions, not external factors like spectrometer settings.

More Related Videos

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Published on: August 22, 2015

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Related Experiment Videos

Last Updated: Jun 24, 2026

UV-Vis Spectroscopic Characterization of Nanomaterials in Aqueous Media

UV-Vis Spectroscopic Characterization of Nanomaterials in Aqueous Media

Published on: October 25, 2021

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Published on: August 22, 2015

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Area of Science:

Optics
Materials Science
Nanotechnology

Background:

Macroscopic light emitters display predictable optical properties.
Nanoscale optical emitters present unique challenges and phenomena due to their size.

Purpose of the Study:

To investigate the optical emission characteristics of individual carbon nanotubes.
To compare nanoscale emitter behavior with macroscopic emitters.
To determine the influence of emitter location and measurement parameters on spectral properties.

Main Methods:

Optical spectroscopy of individual carbon nanotubes.
Comparison with macroscopic light sources.
Analysis of spectral position and line width dependence on experimental conditions.

Main Results:

The spectral position of light emission from individual carbon nanotubes is dependent on their location within the focal spot.
Unlike macroscopic emitters, the line width of nanotube emission is independent of spectrometer entrance slit width.
These observed effects are characteristic of nanoscale optical emitters with dimensions below the optical diffraction limit.

Conclusions:

Individual carbon nanotubes exhibit distinct optical emission behaviors compared to macroscopic emitters.
The findings highlight the impact of nanoscale dimensions on light emission properties.
The study suggests these phenomena are general for sub-diffraction limit optical emitters.