Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Van der Waals Interactions01:24

Van der Waals Interactions

Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.

You might also read

Related Articles

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

Sort by
Same author

Doping as a Strategy for Modulating Crystallinity and Optical Properties of Large Area Films of Semiconducting 2D-COFs.

ACS applied materials & interfaces·2026
Same author

Nanoscale Plasmon-Exciton Strong Coupling-Enhanced Photocatalysis: Role of Optical Dark States.

Angewandte Chemie (International ed. in English)·2026
Same author

Resolving State-Specific Energy Flow in Metal Nanoclusters Using 2D Electronic Spectroscopy.

The journal of physical chemistry letters·2026
Same author

Electronic Relaxation Dynamics of the Au<sub>42</sub>(SC<sub>8</sub>H<sub>9</sub>)<sub>32</sub> Cluster Nanorod Studied Using 2D Electronic Spectroscopy.

The journal of physical chemistry letters·2025
Same author

Structure-Dependent Electronic Relaxation Dynamics of Two-Dimensional Silver Monolayers.

Nano letters·2025
Same author

Plasmon-mediated nonlinear optics and dynamics.

The Journal of chemical physics·2025

Related Experiment Video

Updated: May 24, 2026

Gold Nanoparticle Synthesis
13:42

Gold Nanoparticle Synthesis

Published on: July 10, 2021

Magnetic dipolar interactions in solid gold nanosphere dimers.

Manabendra Chandra1, Anne-Marie Dowgiallo, Kenneth L Knappenberger

  • 1Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States.

Journal of the American Chemical Society
|March 2, 2012
PubMed
Summary
This summary is machine-generated.

Researchers observed a magnetic dipolar effect in gold nanostructures, revealing chirality in their nonlinear optical response. This finding advances understanding of plasmonic properties in nanomaterials.

More Related Videos

Synthesis and Characterization of Amphiphilic Gold Nanoparticles
10:09

Synthesis and Characterization of Amphiphilic Gold Nanoparticles

Published on: July 2, 2019

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids
08:53

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Published on: March 21, 2025

Related Experiment Videos

Last Updated: May 24, 2026

Gold Nanoparticle Synthesis
13:42

Gold Nanoparticle Synthesis

Published on: July 10, 2021

Synthesis and Characterization of Amphiphilic Gold Nanoparticles
10:09

Synthesis and Characterization of Amphiphilic Gold Nanoparticles

Published on: July 2, 2019

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids
08:53

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Published on: March 21, 2025

Area of Science:

  • Plasmonics
  • Nanophotonics
  • Nonlinear Optics

Background:

  • Colloidal metal nanostructures exhibit unique optical properties due to surface plasmon resonances.
  • Nonlinear optical (NLO) responses are crucial for applications in photonics and optoelectronics.
  • Understanding the origin of NLO responses in nanostructures is key to their technological advancement.

Purpose of the Study:

  • To investigate the nonlinear optical (NLO) response of individual solid gold nanosphere (SGN) dimers.
  • To identify the contributions of magnetic dipolar effects to the second-order NLO response.
  • To explore the chirality of the plasmon field within the interparticle gap of SGN dimers.

Main Methods:

  • Fabrication of SGN dimers using a bottom-up approach.
  • Polarization-resolved second harmonic generation (SHG) spectroscopy at the single-particle level.
  • Analysis of SH signal polarization line shapes through continuous polarization variation.

Main Results:

  • Observation of a magnetic dipolar contribution to the NLO response of colloidal metal nanostructures.
  • Detection of unambiguous circular dichroism in the SH signal from SGN dimers.
  • Identification of chiral plasmon fields within the interparticle gap of the nanodimers.

Conclusions:

  • The study presents the first observation of magnetic dipolar contributions to the NLO response in colloidal metal nanostructures.
  • The observed circular dichroism indicates chirality in the plasmon field, driven by magnetic dipole effects.
  • These findings enhance the understanding of optical properties and potential applications of plasmonic nanostructures.