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Assembly of '3D' plasmonic clusters by '2D' AFM nanomanipulation of highly uniform and smooth gold nanospheres
- Source :
- Scientific Reports, Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
- Publication Year :
- 2017
- Publisher :
- Nature Publishing Group UK, 2017.
-
Abstract
- Atomic force microscopy (AFM) nanomanipulation has been viewed as a deterministic method for the assembly of plasmonic metamolecules because it enables unprecedented engineering of clusters with exquisite control over particle number and geometry. Nevertheless, the dimensionality of plasmonic metamolecules via AFM nanomanipulation is limited to 2D, so as to restrict the design space of available artificial electromagnetisms. Here, we show that ā2Dā nanomanipulation of the AFM tip can be used to assemble ā3Dā plasmonic metamolecules in a versatile and deterministic way by dribbling highly spherical and smooth gold nanospheres (NSs) on a nanohole template rather than on a flat surface. Various 3D plasmonic clusters with controlled symmetry were successfully assembled with nanometer precision; the relevant 3D plasmonic modes (i.e., artificial magnetism and magnetic-based Fano resonance) were fully rationalized by both numerical calculation and dark-field spectroscopy. This templating strategy for advancing AFM nanomanipulation can be generalized to exploit the fundamental understanding of various electromagnetic 3D couplings and can serve as the basis for the design of metamolecules, metafluids, and metamaterials.
- Subjects :
- Multidisciplinary
Materials science
Magnetism
Atomic force microscopy
Science
Fano resonance
Metamaterial
Physics::Optics
Nanotechnology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Gold nanospheres
01 natural sciences
Symmetry (physics)
Article
0104 chemical sciences
Medicine
Nanometre
0210 nano-technology
Plasmon
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....f7c12f47b1d976c67a2821eefb25a53f