Journal
ACS NANO
Volume 14, Issue 10, Pages 12558-12570Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c02610
Keywords
welded gold nanorods; femtosecond laser excitation; plasmonics; electron tomography; electron energy loss spectroscopy; plasmon line width; structural defects
Categories
Funding
- European Research Council under the European Union [815128 REALNANO, 770887 PICOMETRICS]
- Research Foundation Flanders (FWO, Belgium) [G.0381.16N, G.0267.18N.]
- Marie Sklodowska-Curie Actions (MSCA) in Horizon 2020 program [797153]
- FPI Fellowship from the Spanish MINECO
- Spanish Ministry of Science, Innovation and Universities (MICIU) [RTI2018-095844 B-I00, MAT2017-86659-R]
- Madrid Regional Government [P2018/NMT-4389]
- FWO [G093417N]
- European Union [823717 ESTEEM3]
- Spanish State Research Agency [MDM-2017-0720]
- Marie Curie Actions (MSCA) [797153] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available