0000000000964403

AUTHOR

H.-j. Maas

showing 2 related works from this author

Imaging of photonic nanopatterns by scanning near-field optical microscopy

2002

We define photonic nanopatterns of a sample as images recorded by scanning near-field optical microscopy with a locally excited electric dipole as a probe. This photonic nanopattern can be calculated by use of the Green’s dyadic technique. Here, we show that scanning near-field optical microscopy images of well-defined gold triangles taken with the tetrahedral tip as a probe show a close similarity to the photonic nanopattern of this nanostructure with an electric dipole at a distance of 15 nm to the sample and tilted 45° with respect to the scanning plane.

Materials sciencebusiness.industryScanning confocal electron microscopyPhysics::OpticsStatistical and Nonlinear PhysicsScanning gate microscopyScanning capacitance microscopyAtomic and Molecular Physics and Opticslaw.inventionScanning probe microscopyOpticslawScanning ion-conductance microscopyNear-field scanning optical microscopeScanning tunneling microscopebusinessVibrational analysis with scanning probe microscopyJournal of the Optical Society of America B
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Photonic nanopatterns of gold nanostructures indicate the excitation of surface plasmon modes of a wavelength of 50-100 nm by scanning near-field opt…

2003

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.

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 microscopyJournal of Microscopy
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