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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
Using solution-phase nanoparticles, surface-confined nanoparticle arrays and single nanoparticles as biological
Amanda J Haes1, Douglas A Stuart, Shuming Nie
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
Journal of Fluorescence
|December 25, 2004
Summary
Noble metal nanoparticles exhibit vibrant colors due to tunable localized surface plasmon resonance (LSPR). This review explores three LSPR-based sensing platforms using gold and silver nanoparticles for biological detection.
Area of Science:
- Nanotechnology
- Materials Science
- Biomedical Engineering
Background:
- Noble metal nanoparticles, like gold and silver, possess unique optical properties.
- The intense colors arise from localized surface plasmon resonance (LSPR).
- LSPR's tunability offers potential for sensing applications.
Purpose of the Study:
- To review sensing platforms based on the LSPR of gold and silver nanoparticles.
- To highlight the tunability of nanoparticle color for biological sensing.
- To demonstrate the utility of different nanoparticle configurations for sensing.
Main Methods:
- Review of existing literature on nanoparticle-based sensing.
- Analysis of LSPR properties in solution-phase nanoparticles.
- Investigation of LSPR in surface-confined nanoparticle arrays.
- Examination of LSPR in single nanoparticle systems.
Main Results:
- The color of nanoparticles is tunable via LSPR.
- Solution-phase nanoparticles show tunable optical properties.
- Surface-confined nanoparticle arrays offer tunable sensing capabilities.
- Single nanoparticles provide a platform for sensitive LSPR-based detection.
Conclusions:
- Tunable LSPR of noble metal nanoparticles forms the basis of effective sensing platforms.
- Three distinct nanoparticle configurations (solution, array, single) are suitable for biological sensing.
- The optical properties of gold and silver nanoparticles can be harnessed for advanced biosensors.
