6533b86ffe1ef96bd12cdbae

RESEARCH PRODUCT

Photonic nanopatterns of gold nanostructures indicate the excitation of surface plasmon modes of a wavelength of 50-100 nm by scanning near-field optical microscopy

H.-j. MaasAlain DereuxJörg HeimelJ.-c. WeeberUwe FischerHarald Fuchs

subject

HistologyMaterials sciencebusiness.industryNear-field opticsSurface plasmonScanning confocal electron microscopyPhysics::OpticsScanning capacitance microscopyDark field microscopyPathology and Forensic MedicineCondensed Matter::Materials ScienceScanning probe microscopyOpticsNear-field scanning optical microscopebusinessVibrational analysis with scanning probe microscopy

description

Scanning near-field optical microscopy images of metal nanostructures taken with the tetrahedral tip (T-tip) show a distribution of dark and bright spots at distances in the order of 25-50 nm. The images are interpreted as photonic nanopatterns defined as calculated scanning near-field optical microscopy images using a dipole serving as a light-emitting scanning near-field optical microscopy probe. Changing from a positive to a negative value of the dielectric function of a sample leads to the partition of one spot into several spots in the photonic nanopatterns, indicating the excitation of surface plasmons of a wavelength in the order of 50-100 nm in metal nanostructures.

yearjournalcountryeditionlanguage
2003-03-01Journal of Microscopy
https://doi.org/10.1046/j.1365-2818.2003.01139.x