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Related Experiment Video

Updated: Jun 23, 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

Ultrasonic Control of Polymer-Capped Plasmonic Molecules.

Yingying Cai¹, Swagato Sarkar², Yuwen Peng¹

¹Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany.

|October 31, 2024

Summary

Controlled ultrasound treatment transforms 2D plasmonic molecules into 3D structures by shortening polymer bonds. This breakthrough enables precise control over nanoparticle assembly for advanced optical applications.

Keywords:

hydrogen bond nanostructures plasmonic molecules polymer self-assembly supracolloidal assemblies ultrasound-responsiveness

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Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Published on: October 5, 2018

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Last Updated: Jun 23, 2026

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

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Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Published on: October 5, 2018

Area of Science:

Nanotechnology
Materials Science
Physical Chemistry

Background:

Plasmonic molecules (PMs) are emerging materials with tunable optical properties.
Controlling nanoscale aggregation in PMs is crucial but challenging.
Existing methods lack precise control over structural modifications.

Purpose of the Study:

To demonstrate 2D/3D isomerization of plasmonic molecules.
To investigate the effect of controlled ultrasound on PM structure.
To achieve precise control over PM nanoarchitecture.

Main Methods:

Self-assembly of gold nanoparticles functionalized with hydrogen bonding (HB) polymers into AB-type complexes.
Controlled ultrasonication to induce interparticle polymer bundle cross-linking.
Drop-casting to observe structural transitions from 2D to 3D configurations.

Main Results:

Ultrasound treatment reduced polymer bond lengths from ~14 nm to ~2 nm.
Enhanced HB cross-linking increased cluster stiffness.
Achieved 100% yield of 2D to 3D isomerization during drop-casting.

Conclusions:

Ultrasound provides precise control over PM structural isomerization.
Shortened polymer bonds and increased stiffness drive the 2D to 3D transition.
This method advances PM nanoarchitecture control for applications in sensing, optoelectronics, and metamaterials.