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Updated: Apr 17, 2026

Author Spotlight: Single-Molecule Surface-Enhanced Raman Scattering Measurements Enabled by Plasmonic DNA Origami Nanoantennas

Author Spotlight: Single-Molecule Surface-Enhanced Raman Scattering Measurements Enabled by Plasmonic DNA Origami Nanoantennas

Published on: July 21, 2023

Plasmon resonance tuning using DNA origami actuation.

Luca Piantanida¹, Denys Naumenko, Emanuela Torelli

¹CNR-IOM Laboratorio TASC, Area Science Park, Basovizza, 34149, Trieste, Italy. piantanida@iom.cnr.it.

Chemical Communications (Cambridge, England)

|February 19, 2015

Summary

Researchers developed a new method for tuning localized surface plasmon resonance (LSPR) using DNA origami. This technique allows for continuous and reversible adjustments to nanoparticle separation, enabling precise optical property modulation.

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Last Updated: Apr 17, 2026

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Area of Science:

Nanotechnology
Biophysics
Materials Science

Background:

Localized surface plasmon resonance (LSPR) is a phenomenon sensitive to the local dielectric environment and interparticle distance.
Controlling nanoparticle separation is crucial for tuning LSPR properties for various applications.
Existing methods for LSPR tuning often lack continuous, reversible control.

Purpose of the Study:

To develop an innovative strategy for continuous and reversible LSPR tuning.
To utilize DNA origami as an actuation mechanism to precisely control nanometric separation of gold nanoparticles.
To demonstrate the feasibility of DNA hybridization for modulating LSPR.

Main Methods:

A DNA origami-based system was designed to actuate the distance between two gold nanoparticles.
DNA hybridization events were employed to control the actuation mechanism.
Three distinct DNA sequences were synthesized and tested to induce resonance shifts.

Main Results:

The developed strategy enabled continuous and reversible tuning of LSPR.
DNA origami actuation successfully modulated the nanometric separation of gold nanoparticles.
Resonance shifts of up to 6 nm were achieved by using specific DNA sequences.

Conclusions:

DNA origami actuation provides an effective platform for precise and dynamic LSPR tuning.
This approach offers a novel method for developing responsive plasmonic nanostructures.
The developed strategy holds potential for applications in sensing, optical devices, and metamaterials.