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Updated: May 15, 2026
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Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
Published on: September 2, 2017
Polarization-sensitive linear plasmonic nanostructures via colloidal lithography with uniaxial colloidal arrays
1Nanobiophotonics and Laser Microspectroscopy Centre, Institute for Interdisciplinary Research in Bio-Nano-Sciences, and Faculty of Physics, Babes-Bolyai University, 42 T. Laurian Street, 400271 Cluj-Napoca, Romania.
ACS Applied Materials & Interfaces
|January 24, 2013
Summary
Researchers created novel metallic nanostructures, linear arrays of metal half-shells (LAMHSs) and periodically serrated plasmonic strips (PSPSs), for advanced plasmonic applications. These structures exhibit controllable morphology and anisotropic plasmonic responses, enabling new technological designs.
Area of Science:
- Nanotechnology
- Plasmonics
- Materials Science
Background:
- Metallic nanostructures' surface plasmon excitation is key for applications in communications, medicine, and environment.
- Plasmonic response is highly sensitive to nanostructure size and shape, necessitating precise control.
Purpose of the Study:
- To develop novel metallic nanostructures with controllable morphology using a template-assisted approach.
- To investigate the plasmonic properties and anisotropic response of the fabricated nanostructures.
Main Methods:
- Fabrication of uniaxial colloidal crystal arrays via convective self-assembly on DVD surfaces.
- Use of colloidal crystals as templates for metal film deposition to create linear arrays of metal half-shells (LAMHSs) and periodically serrated plasmonic strips (PSPSs).
- Characterization using angle-resolved optical transmittance and polarized light transmission measurements, supported by Finite-Difference Time-Domain (FDTD) simulations.
Main Results:
- Successful fabrication of LAMHSs and PSPSs with controllable morphology.
- Observation of multiple surface plasmon resonances through transmittance measurements.
- Demonstration of anisotropic plasmonic response in both LAMHSs and PSPSs via polarized light transmission.
- FDTD simulations confirmed experimental findings and aided in plasmon mode assignment.
Conclusions:
- The study presents a method for creating anisotropic linear metallic nanostructures.
- LAMHSs and PSPSs exhibit tunable plasmonic properties and anisotropic responses.
- These nanostructures hold potential for the design of advanced plasmonic components and devices.
