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Related Experiment Video

Updated: Dec 5, 2025

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

A reconfigurable sandwich structure switchable DNA-based metamaterial.

¹Hezhou University, Hezhou, 542899, China. zhongmin2012hy@163.com.

Scientific Reports

|October 16, 2020

Summary

This summary is machine-generated.

A tunable DNA metamaterial operates in the 170-340 THz range, switching between ON and OFF states. Structure 3 demonstrates a tunable field enhancement factor (FEF) up to 91.96, enabling optical memristor and gate applications.

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DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications

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Published on: September 27, 2019

Area of Science:

Terahertz (THz) photonics
Metamaterial science
DNA nanotechnology

Background:

Metamaterials offer unique electromagnetic properties not found in natural materials.
DNA's tunable electronic properties present opportunities for novel metamaterial designs.
Developing switchable optical devices is crucial for advanced information processing.

Purpose of the Study:

To design and simulate a tunable DNA-based metamaterial operating in the 170-340 THz range.
To investigate the field enhancement factors (FEF) of different metal-DNA-metal structures.
To explore the potential of the designed metamaterial as an optical switch, memristor, or gate.

Main Methods:

Design and simulation of three distinct metal-DNA-metal structures (Structure 1, 2, and 3).
Utilizing different metal layers (Ag, Au, Dirac) and DNA as the dielectric medium.
Analysis of field enhancement factors (FEF) under varying Fermi energy and magnetic field conditions.

Main Results:

Structure 3 (Dirac/DNA/Dirac) achieved the highest FEF of 59.8, tunable up to 91.96 with Fermi energy modulation.
Structures 2 and 3 exhibited significantly higher switching performance compared to Structure 1.
The metamaterial demonstrated switchable ON/OFF states based on DNA strip resistance, suitable for sensor applications.

Conclusions:

The proposed tunable DNA-based metamaterial exhibits promising switchable features for THz applications.
Structures 2 and 3 show potential for use as optical memristors or optical gates due to their high performance.
The design offers a novel approach to creating reconfigurable optical devices leveraging DNA's unique properties.