Publication
Title
3D characterization and plasmon mapping of gold nanorods welded by femtosecond laser irradiation
Author
Abstract
Ultrafast laser irradiation can induce morphological and structural changes in plasmonic nanoparticles. Gold nanorods (Au NRs), in particular, can be welded together upon irradiation with femtosecond laser pulses, leading to dimers and trimers through the formation of necks between individual nanorods. We used electron tomography to determine the 3D (atomic) structure at such necks for representative welding geometries and to characterize the induced defects. The spatial distribution of localized surface plasmon modes for different welding configurations was assessed by electron energy loss spectroscopy. Additionally, we were able to directly compare the plasmon line width of single-crystalline and welded Au NRs with single defects at the same resonance energy, thus making a direct link between the structural and plasmonic properties. In this manner, we show that the occurrence of (single) defects results in significant plasmon broadening.
Language
English
Source (journal)
ACS nano. - -
Publication
2020
ISSN
1936-0851
DOI
10.1021/ACSNANO.0C02610
Volume/pages
14 :10 (2020) , p. 12558-12570
Article Reference
acsnano.0c02610
ISI
000586793400016
Pubmed ID
32790321
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Project info
3D Structure of nanomaterials under realistic conditions (REALNANO).
Picometer metrology for light-element nanostructures: making every electron count (PICOMETRICS).
Spectral electron tomography as a quantitative technique to investigate functional nanomaterials.
Three-dimensional atomic modelling of functional nanocrystalline structures from a single viewing direction.
Correlating the 3D atomic structure of metal anisotropic nanoparticles with their optical properties (SOPMEN).
Compressed sensing enabling low dose imaging in transmission electron microscopy.
Enabling science and technology through European electron microscopy (ESTEEM3).
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 26.10.2020
Last edited 02.10.2024
To cite this reference