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Updated: Feb 7, 2026

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
Published on: September 2, 2017
Large-scale Au nanoparticle cluster arrays with tunable particle numbers evolved from colloidal lithography
Liping Fang1,2, Xueyao Liu1, Siyuan Xiang1
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
Researchers developed a new method for creating large gold nanoparticle (Au NP) cluster arrays. This technique allows for tunable plasmonic properties, enhancing applications like surface-enhanced Raman scattering (SERS).
Area of Science:
- Nanotechnology
- Materials Science
- Plasmonics
Background:
- Assembly of metal nanoparticles (NPs) is crucial for tuning plasmon resonance properties for various applications.
- Achieving controllable, large-scale assembly of metal NP cluster arrays presents a significant scientific challenge.
Purpose of the Study:
- To present a novel strategy for preparing large-scale gold nanoparticle (Au NP) cluster arrays.
- To demonstrate tunable plasmonic properties in these arrays by controlling the number of NPs per cluster.
- To investigate the utility of these arrays for surface-enhanced Raman scattering (SERS) applications.
Main Methods:
- Utilized colloidal lithography to create polymer templates with varying surface areas.
- Employed a template-guided self-assembly technique using quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes.
- Fabricated Au NP arrays through electrostatic interaction between Au NPs and the PDMAEMA templates.
Main Results:
- Successfully prepared large-scale Au NP cluster arrays.
- Demonstrated arbitrary tuning of the number of Au NPs within each cluster by controlling polymer template surface area.
- Showcased tunable plasmonic properties in the fabricated Au NP cluster arrays.
- Evaluated the SERS performance of the prepared Au NP cluster arrays.
Conclusions:
- The developed colloidal lithography and template-guided self-assembly strategy enables controllable fabrication of large-scale Au NP cluster arrays.
- The number of NPs per cluster, and thus plasmonic properties, can be precisely tuned.
- The prepared Au NP cluster arrays exhibit promising potential for SERS applications.
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