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Related Concept Videos

Stereoisomerism02:52

Stereoisomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...

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Related Experiment Video

Updated: May 10, 2026

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
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Published on: March 23, 2017

Optical forces in twisted split-ring-resonator dimer stereometamaterials.

Chaojun Tang1, Qiugu Wang, Fanxin Liu

  • 1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.

Optics Express
|June 6, 2013
PubMed
Summary
This summary is machine-generated.

Researchers numerically studied optical forces in twisted stereometamaterials. They achieved tunable attractive and repulsive forces between split ring resonators, enabling precise control over their separation.

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Area of Science:

  • Optics and Photonics
  • Metamaterials Science
  • Nanotechnology

Background:

  • Stereometamaterials offer unique optical properties due to their three-dimensional structure.
  • Split ring resonators are fundamental building blocks for creating metamaterial functionalities.
  • Controlling optical forces is crucial for nanoscale manipulation and optical device design.

Purpose of the Study:

  • To numerically investigate the optical forces in stereometamaterials composed of stacked split ring resonators.
  • To explore the influence of twisted angles on optical forces and resonator separation.
  • To analyze the potential for attractive and repulsive force manipulation.

Main Methods:

  • Numerical simulations of optical forces acting on split ring resonators.
  • Analysis of hybridized magnetic resonances in twisted stereometamaterials.
  • Application of a quasi-static dipole-dipole interaction model for force prediction.

Main Results:

  • Achieved both attractive and repulsive relative optical forces at hybridized magnetic resonances.
  • Demonstrated tunable control over the separation between split ring resonators.
  • Realized a strong attractive force of ~1200 piconewtons at a 180° twist angle and specific illumination intensity.
  • Validated the quasi-static dipole-dipole interaction model for predicting force characteristics.

Conclusions:

  • Stereometamaterials with twisted split ring resonators can generate controllable optical forces.
  • The twisted angle significantly influences inductive coupling and resultant optical forces.
  • Optical forces can be harnessed for precise manipulation of resonator spacing, with potential applications in optical devices.