Plasmonic Nickel Nanoantennas
2011 (English)In: SMALL, ISSN 1613-6810, Vol. 7, no 16, 2341-2347 p.Article in journal (Refereed) Published
The fundamental optical properties of pure nickel nanostructures are studied by far-field extinction spectroscopy and optical near-field microscopy, providing direct experimental evidence of the existence of particle plasmon resonances predicted by theory. Experimental and calculated near-field maps allow for unambiguous identification of dipolar plasmon modes. By comparing calculated near-field and far-field spectra, dramatic shifts are found between the near-field and far-field plasmon resonances, which are much stronger than in gold nanoantennas. Based on a simple damped harmonic oscillator model to describe plasmonic resonances, it is possible to explain these shifts as due to plasmon damping.
Place, publisher, year, edition, pages
2011. Vol. 7, no 16, 2341-2347 p.
ENHANCED RAMAN-SCATTERING, NEAR-FIELD, OPTICAL ANTENNAS, NANOPARTICLES, RESONANCES, MOLECULES, EMISSION, VECTOR, PROBE
IdentifiersURN: urn:nbn:se:kth:diva-41301DOI: 10.1002/smll.201100640ISI: 000294729900010ScopusID: 2-s2.0-80051732569OAI: oai:DiVA.org:kth-41301DiVA: diva2:444047
FunderSwedish Research Council
QC 201109272011-09-272011-09-262011-09-27Bibliographically approved