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Related Experiment Video

Updated: Jun 25, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Strong Chiro-Optical Activity of Plasmonic Metasurfaces with Inverted Pyramid Arrays.

Luis Alberto Pérez¹, Jinhui Hu¹, Jose Mendoza-Carreño¹

¹Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Catalonia, Spain.

ACS Applied Materials & Interfaces

|March 3, 2025

Summary

We developed cost-effective chiral plasmonic metasurfaces using a novel fabrication method. These nanostructures show strong chiroptical responses, paving the way for advanced nanoscale light manipulation.

Keywords:

chiral metasurfaces high g-factors inverted pyramids plasmonics silicon etching

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Last Updated: Jun 25, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

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Published on: September 27, 2011

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Published on: November 21, 2019

Area of Science:

Plasmonics
Nanophotonics
Chirality

Background:

Chiral plasmonics enables nanoscale light polarization control.
Advanced nanofabrication yields nanostructures with strong chiroptical responses.
High fabrication complexity and cost hinder upscaling of chiral nanostructures.

Purpose of the Study:

To develop cost-effective and reproducible chiral plasmonic metasurfaces.
To investigate the chiroptical properties of inverted pyramid arrays with mismatched orientations.
To demonstrate a scalable fabrication method for chiral nanostructures.

Main Methods:

Fabrication of chiral plasmonic metasurfaces using soft lithography and anisotropic etching.
Creation of inverted pyramid arrays with mismatched directions relative to lattice vectors.
Theoretical modeling and complete polarimetric characterization.

Main Results:

Achieved high differential transmittance in the visible spectrum.
Demonstrated significant influence of mismatch angle on chiral behavior.
Observed circular birefringence > 375°/μm and g-factors approaching unity.

Conclusions:

Soft lithography and anisotropic etching offer a cost-effective route to chiral plasmonic metasurfaces.
The developed metasurfaces exhibit exceptional chiro-optical activity.
This work presents a scalable approach for advanced nanoscale light manipulation applications.