RT Journal Article
T1 Rod–sphere cluster irradiation with femtosecond laser pulses: cut and paste at the nanoscale
A1 Díaz-Núñez, Pablo
A1 Thomä, Sabrina L.J.
A1 González-Rubio, Guillermo
A1 Borrell Grueiro, Olivia
A1 Höller, Roland P.M.
A1 Chanana, Munish
A1 Garoz, David
A1 Bañares Morcillo, Luis
A1 Junquera González, María Elena
A1 Guerrero Martínez, Andrés
A1 Rivera, Antonio
A1 Peña-Rodríguez, Ovidio
AB We report on the irradiation of gold rod–sphere assemblies with ultrashort laser pulses, producing structures that are very difficult to obtain by other methods. The optical response of these assemblies displays several peaks arising from the interaction of the plasmon modes of the individual particles, offering thus great flexibility to control the energy deposited on the individual particles. Judicious selection of the wavelength and fluence of the laser pulses allow fine control over the changes produced: the particles can be melted, welded and/or the organic links cleaved. In this way, it is possible to generate structures “à la carte” with a degree of control unmatched by other synthetic protocols. The method is exemplified with gold nanoparticles, but it can be easily implemented on particles composed of different metals, widening considerably the range of possibilities. The final structures are excellent candidates for surface-enhanced spectroscopies or plasmonic photothermal therapy as they have a very intense electric field located outside the structure, not in the gaps.
SN 2192-8614
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/108849
UL https://hdl.handle.net/20.500.14352/108849
LA eng
NO Díaz-Núñez P, Thomä S, González-Rubio G, Borrell-Grueiro O, Höller R, Chanana M, Garoz D, Bañares L, Junquera E, Guerrero-Martínez A, Rivera A, Peña-Rodríguez O. Rod–sphere cluster irradiation with femtosecond laser pulses: cut and paste at the nanoscale. Nanophotonics. 2021;10(12): 3153-3159. https://doi.org/10.1515/nanoph-2021-0240
NO Ministerio de Ciencia, Innovación y Universidades
NO EUROfusion Consortium
NO Comunidad Autónoma de Madrid
DS Docta Complutense
RD 17 abr 2025