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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
Gold nanostructures: engineering their plasmonic properties for biomedical applications
Min Hu1, Jingyi Chen, Zhi-Yuan Li
1Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA.
Chemical Society Reviews
|October 24, 2006
Summary
The optical properties of gold nanostructures can be adjusted by changing their shape and structure. This tunability, along with gold's inertness, makes them ideal for biomedical applications.
Area of Science:
- Nanotechnology
- Materials Science
- Biomedical Engineering
Background:
- Surface plasmon resonance (SPR) is a key optical phenomenon in metallic nanostructures.
- Controlling the SPR peak is crucial for tailoring nanostructures for specific applications.
Purpose of the Study:
- To review the tunability of surface plasmon resonance peaks in gold nanostructures.
- To compare different gold nanostructures (nanospheres, nanorods, nanoshells, nanocages) regarding their SPR properties.
- To highlight the suitability of gold nanostructures for biomedical applications.
Main Methods:
- Comparative analysis of four gold nanostructures: nanospheres, nanorods, nanoshells, and nanocages.
- Discussion of how shape and structure (solid vs. hollow) influence SPR peak positions.
- Review of the optical properties and inertness of gold.
Main Results:
- SPR peaks of gold nanostructures can be tuned across the visible to near-infrared spectrum.
- Shape and structure significantly impact the SPR peak position, with hollow structures offering different tunability compared to solid ones.
- Gold nanostructures exhibit desirable optical tunability and chemical inertness.
Conclusions:
- The SPR of gold nanostructures is highly tunable via structural modifications.
- Gold nanostructures, due to their tunable optics and inertness, are promising for diverse biomedical applications.
