English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This work reports on the experimental investigation of surface plasmonpolaritons (SPP) on cylindrical wires of small diameters. Applying a newtechnique that was developed by this group and recently reported, single wireand wire array samples of gold (Au) and silver (Ag) with small diameters 400nm< D < 3 mum and high aspect ratios <= 75000 in photonic crystal fibers andsingle hole capillaries are fabricated. Additionally, effective bulk metalwires of Au and Ag are created by a hybrid technique, including fiber taperingand magnetron sputter deposition for a large number of different diametersbetween 13 mum to 50 mum.  The measurement of the absorption, corresponding to the excitation of SPPmodes is realized with a new goniometer-based experimental setup for obliqueincidence laser beam scattering at a single wavelength. A device is developedthat allows a simultaneous measurement of the scattering amplitude in s- andp-polarization under varied incident angle.  For comparison, a model for the dispersion of discrete SPP modes and theirangles of excitation is derived. The computed results are for the first timecompared with a theoretical approach to electromagnetic scattering theory forcylinders, that is calculated analogue to Mie scattering and to an exactsolution of Maxwell's equations for cylindrical SPP. The validity of the modelis proved for higher incident angles. The first oblique incidence examinationof SPP on metal wires for this size range is reported. The experimental resultsfor low incident angles show good accordance to the numerical results fromscattering theory.

Oblique-incidence excitation of surface plasmon polaritons on small metal wires