April 15, 2002The Journal of Chemical Physics
Shape effects in plasmon resonance of individual colloidal silver nanoparticles
Authors
Discussion
Loading...
Member takes
Implication
Experimental analysis demonstrates shape-dependent plasmon resonance shifts in individual colloidal silver nanoparticles, highlighting a thermal tuning method for visible-spectrum optical probes.
Key Points
- To determine how size and shape influence the plasmon resonance optical spectra of individual silver nanoparticles and evaluate methods for tuning their spectral response.
- Detected and characterized isolated silver nanoparticles using optical far-field spectroscopy.
- Correlated individual optical spectra with particle size and geometric shape via high-resolution transmission electron microscopy.
- Applied controlled heating to induce morphological changes in individual particles and monitor resulting spectral shifts.
- Individual silver nanoparticles exhibited distinct optical spectral responses dictated by specific geometric shapes.
- Controlled thermal heating altered particle morphology, reliably shifting resonance peaks and enabling spectral tuning across the visible wavelength range.
Cite This Study
Mock et al. (2002) studied this question.