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

You might also read

Related Articles

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

Sort by
Same author

Fundamental Efficiency Limits of Transition-Metal Dichalcogenide Solar Cells with Carrier Multiplication and Hot-Carrier Effects.

Nano letters·2026
Same author

Metallodielectric photonic glass paints enable hyperchromatic, angle-independent structural color across the full visible spectrum.

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

Colloidal Photonic Fibers for Reflectively Colorful Radiative Cooling Fabrics.

Small science·2026
Same author

Specifying the Origin of Chiral Sensitivity through Conformal Nanogap Engineering in a Single Helicoid Gold Nanoparticle.

ACS nano·2026
Same author

Plasmonic Supraballs for Scalable Broadband Solar Energy Harvesting.

ACS applied materials & interfaces·2026
Same author

MiR-203a-3p in extracellular vesicles derived from mesenchymal stem cells alleviates BPD-associated apoptosis and inflammation.

Stem cell research & therapy·2025

Related Experiment Video

Updated: Jun 18, 2025

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics
09:54

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

Published on: September 10, 2018

7.4K

Achieving Optical Refractive Index of 10-Plus by Colloidal Self-Assembly.

NaYeoun Kim1, Ji-Hyeok Huh1,2, YongDeok Cho1

  • 1KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea.

Small (Weinheim an Der Bergstrasse, Germany)
|July 31, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed self-assembled optical metasurfaces using gold nanoparticles to achieve record-high refractive indices (n) beyond natural material limits. This breakthrough advances optical metasurface technology by overcoming limitations in polarization density (P).

Keywords:
colloidselectric polarizationmeta‐atomspolyhedraself‐assembly

More Related Videos

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
08:01

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Published on: May 12, 2020

8.0K
Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

9.8K

Related Experiment Videos

Last Updated: Jun 18, 2025

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics
09:54

Fabrication of Refractive-index-matched Devices for Biomedical Microfluidics

Published on: September 10, 2018

7.4K
Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
08:01

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Published on: May 12, 2020

8.0K
Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

9.8K

Area of Science:

  • Nanophotonics and Plasmonics
  • Materials Science and Engineering
  • Optical Metasurfaces

Background:

  • Natural materials have inherent limitations in polarization density (P) and refractive index (n), with n typically capped at ≈4.0 at optical frequencies due to Maxwellian macroscopic descriptions.
  • Self-assembly of metallic nanoparticles (NPs) has been explored to create nanogaps, enhancing P and achieving high n, but large-area, high-integrity structures remain challenging.

Purpose of the Study:

  • To develop self-assembled optical metasurfaces with exceptionally high refractive indices (n) by overcoming limitations of natural materials.
  • To investigate the role of nanoparticle shape and capacitive coupling in achieving high n for optical metasurfaces.

Main Methods:

  • Utilized polymeric brush-mediated self-assembly to create large-area, close-packed monolayers of gold nanoparticles (Au NPs) with controlled ligand design.
  • Fabricated monolayers of gold nanospheres (NSs), nanooctahedras (NOs), and nanocubes (NCs) to study the effect of NP shape on optical properties.
  • Systematically compared the refractive indices achieved by different Au NP shapes to elucidate the significance of capacitive coupling.

Main Results:

  • Achieved a record-high refractive index (n) of 10.12 at optical frequencies, significantly surpassing the limits of natural materials.
  • Demonstrated that the self-assembled monolayers of Au NPs exhibit high macroscopic integrity and crystallinity.
  • Elucidated the crucial role of capacitive coupling between NPs in achieving unnaturally high refractive indices.

Conclusions:

  • Self-assembled optical metasurfaces, particularly those using polyhedral gold nanoparticles, offer a promising route to achieve unprecedentedly high refractive indices.
  • The developed method provides a scalable approach for fabricating high-performance optical metasurfaces with potential applications in advanced optical devices.