Related Experiment Video
Updated: May 24, 2026
09:00
Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
Published on: December 11, 2013
Tunable localized surface plasmon resonances in tungsten oxide nanocrystals
Karthish Manthiram1, A Paul Alivisatos
1Department of Chemical Engineering, University of California, Berkeley, California 94720, USA.
Journal of the American Chemical Society
|February 16, 2012
Summary
Metallic tungsten oxide (WO(3-δ)) nanoparticles exhibit tunable localized surface plasmon resonance. This discovery enables the design of plasmonic nanoparticles for applications in light harvesting, bioimaging, and sensing.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Transition-metal oxide nanocrystals offer unique properties for localized surface plasmon resonance (LSPR) due to their d valence electrons.
- Tungsten oxide (WO(3-δ)) nanoparticles show strong visible and near-infrared absorption, but the source of this optical absorption was previously unclear.
Purpose of the Study:
- To investigate the origin of optical absorption in WO(3-δ) nanoparticles.
- To demonstrate the plasmonic properties of metallic WO(3-δ) nanoparticles.
- To explore the potential of these nanoparticles in various applications.
Main Methods:
- Synthesis of WO(3-δ) nanoparticles.
- Characterization of their optical properties.
- Demonstration of tunable LSPR in metallic phases.
Main Results:
- Metallic phases of WO(3-δ) nanoparticles exhibit strong and tunable localized surface plasmon resonance.
- The LSPR is linked to the metallic nature of the nanoparticles.
- Optical absorption properties are directly related to controllable plasmonic behavior.
Conclusions:
- The study clarifies the origin of optical absorption in WO(3-δ) nanoparticles, attributing it to LSPR in metallic phases.
- Rationally designing plasmonic tungsten oxide nanoparticles is now feasible.
- These nanoparticles hold promise for advanced applications in light harvesting, bioimaging, and sensing.
