scholarly journals Optical nanoantenna with dual surface plasmon resonances for enhancements in near-field intensity and far-field radiation

2021 ◽  
Author(s):  
Shengde Liu ◽  
Peng Ju ◽  
liupeng lv ◽  
PING TANG ◽  
Huiyang Wang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Field Intensity ◽  
Near Field ◽  
Far Field ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Field Radiation

POLARIZATION-CONTROLLABLE WINGED NANOCONE TIP ANTENNA

2011 ◽  
Vol 20 (04) ◽  
pp. 415-425 ◽  
Author(s):  
MIKKO J. HUTTUNEN ◽  
JOUNI MÄKITALO ◽  
MARTTI KAURANEN
Keyword(s):  
Local Field ◽  
Near Field ◽  
Optical Antennas ◽  
Background Suppression ◽  
Far Field ◽  
Plasmon Resonances ◽  
Field Radiation ◽  
Efficient Coupling ◽  
Particle Plasmon ◽  
Field Enhancements

We propose winged metal nanocone optical antennas for efficient coupling of far-field radiation into the near-field of sharp metal tips. Unlike normal sharp metal tips, the winged nanocones require no oscillating field along the tip axis for the excitation of the tips. We calculate extinction spectra and local-field enhancements for single and winged gold nanocones and show that the field enhancements in the tips of the winged cones are due to a combination of particle plasmon resonances and a lightning-rod effect. We also propose that the winged nanocones could be used for optical far-field background suppression for tip-enhanced microscopy.

scholarly journals Tuning the Fano Resonance Between Localized and Propagating Surface Plasmon Resonances for Refractive Index Sensing Applications

Plasmonics ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. 1379-1385 ◽  
Author(s):  
Kristof Lodewijks ◽  
Jef Ryken ◽  
Willem Van Roy ◽  
Gustaaf Borghs ◽  
Liesbet Lagae ◽  
...  
Keyword(s):  
Refractive Index ◽  
Surface Plasmon ◽  
Fano Resonance ◽  
Surface Plasmon Resonances ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Plasmon Resonances
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