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Related Experiment Video

Updated: Mar 27, 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

Hydrogen-Regulated Chiral Nanoplasmonics.

Xiaoyang Duan^1,2, Simon Kamin^1,2, Florian Sterl³

¹Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany.

|January 9, 2016

Summary

This summary is machine-generated.

Researchers developed a new hybrid plasmonic metamolecule using magnesium and gold nanoparticles. This system allows real-time, dynamic control of plasmonic chirality with hydrogen gas, enabling sensitive gas detection platforms.

Keywords:

Active plasmonics Mg nanoparticles chirality regulation circular dichroism spectroscopy hydrogen sensing plasmonic chirality

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Published on: June 5, 2019

Area of Science:

Plasmonics and Nanotechnology
Chiroptical Spectroscopy
Materials Science

Background:

Chirality is crucial in chemistry due to differing enantiomer effects.
Controlling molecular chirality with external stimuli is an active research area.
Dynamic regulation of plasmonic chirality, especially in the visible spectrum, remains challenging.

Purpose of the Study:

To demonstrate a novel class of hybrid plasmonic metamolecules.
To achieve dynamic, real-time control of plasmonic chirality using hydrogen.
To explore applications in gas detection.

Main Methods:

Fabrication of hybrid plasmonic metamolecules from magnesium and gold nanoparticles.
Experimental investigation of hydrogen-regulated chiroptical response using circular dichroism spectroscopy.
Morphological analysis of magnesium particles during hydrogenation/dehydrogenation via energy dispersive X-ray spectroscopy.

Main Results:

Demonstrated dynamic control of plasmonic chirality in the visible spectral range.
Achieved real-time switching of chiroptical response via hydrogen interaction.
Observed reversible morphology changes in magnesium nanoparticles.

Conclusions:

Hybrid plasmonic metamolecules offer a new platform for tunable chiroptical properties.
Hydrogen gas can dynamically regulate plasmonic chirality without structural reconfiguration.
The developed system shows potential for sensitive gas detection using chiroptical spectroscopy.