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Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

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Quasi-Random Multimetallic Nanoparticle Arrays.

Francisco Freire-Fernández, Thaddeus Reese, Dongjoon Rhee

¹Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States of America.

|October 23, 2023

Summary

This summary is machine-generated.

Researchers developed a flexible nanofabrication method to create multiscale nanoparticle arrays. These arrays enable tunable optical properties and broadband light manipulation for advanced photonic devices.

Keywords:

Multimetallic nanoparticle arrays lasing multiple surface lattice resonances nanofabrication wrinkle lithography

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Area of Science:

Nanotechnology
Materials Science
Optics

Background:

Developing methods for precise control over nanoparticle arrangement is crucial for advanced optical applications.
Existing techniques often lack the flexibility to independently tailor multiple array parameters.

Purpose of the Study:

To present a novel nanofabrication procedure for creating multiscale substrates with quasi-random microregions of nanoparticle arrays.
To demonstrate the independent control over nanoparticle size, material, array geometry, and fill factor.

Main Methods:

Combining large-area nanoparticle array fabrication with solvent-assisted wrinkle lithography.
Utilizing lithography to mask and etch specific regions of prefabricated nanoparticles.
Controlling fill factors of nanoparticle arrays.

Main Results:

Successfully generated multiscale substrates with nanoparticle arrays of varying periodicities and metals.
Demonstrated surface lattice resonances at low fill factors (20%) in multimetallic nanoparticle arrays.
Achieved lasing action in nanoscale cavities using arrays with as few as 10% nanoparticles.

Conclusions:

The developed nanofabrication approach offers high flexibility for tailoring nanoparticle array properties.
Multimetallic nanoparticle substrates exhibit robust optical responses, enabling broadband light manipulation.
The method facilitates the creation of devices for lasing action across visible and near-infrared wavelengths.