INVESTIGADORES
SANCHEZ Cristian Gabriel
artículos
Título:
Effect of molecular adsorbates on the plasmon resonance of metallic nanoparticles
Autor/es:
CHRISTIAN F. A. NEGRE; CRISTIÁN G. SÁNCHEZ
Revista:
CHEMICAL PHYSICS LETTERS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2010 vol. 494 p. 255 - 259
ISSN:
0009-2614
Resumen:
From a simple time-dependent tight-binding model we calculate the influence of molecular adsorbates on absorption spectra of spherical metallic nanoparticles. The model allows arbitrary coupling to the surface as well as changing the molecular excitation characteristics through its HOMOLUMO gap. Adsorbates cause shifting and widening of the plasmon resonance peak for small coupling and even splitting of the resonance in two different excitations located on the particle surface and the adsorbate layer, respectively, for strong couplings.
