Related Experiment Video
Updated: Feb 16, 2026
09:12
Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
Published on: May 28, 2016
11.7K
Engineering Chiroptical Interactions through Integrating Plasmonic Arrays with Cholesteric Nanocellulose
Han Tao1, Sunghwan Jo2, Guang Chu3
1Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, Espoo, Finland.
Advanced Materials (Deerfield Beach, Fla.)
|February 15, 2026
Summary
Researchers developed new chiral plasmonic materials using gold nanoparticles and cellulose nanocrystals (CNCs). This sustainable method creates tunable chiroptical properties for advanced optical and sensing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Scalable fabrication of chiral plasmonic materials with controlled chiroptical properties is difficult.
- Existing methods often lack precision and scalability.
Purpose of the Study:
- To present a novel method for fabricating engineered chiroptical composites.
- To achieve precise control over chiroptical properties in plasmonic materials.
Main Methods:
- Utilized linearly assembled gold nanoparticle arrays and cholesteric cellulose nanocrystals (CNCs).
- Employed evaporation-induced transfer imprinting lithography for centimeter-scale film fabrication.
- Co-assembled CNCs with gold nanoparticles, preserving linear arrangement.
Main Results:
- Created hybrid films with custom-tailored chiroptical responses.
- Achieved strong and tunable plasmonic circular dichroism (1217 ± 51 mdeg).
- Demonstrated a dissymmetry factor of -0.19 ± 0.02.
Conclusions:
- Developed a sustainable platform for multifunctional chiral plasmonic materials.
- The approach combines linear dichroism and linear birefringence for enhanced chiroptical effects.
- Potential applications include optical sensing, photonic devices, and chiral biointerfaces.
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