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Presentations text content in Nanoplasmonic structures: Designing electromagnetic fields
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Presentations text content in Nanoplasmonic structures: Designing electromagnetic fields
Nanoplasmonic structures: Designing electromagnetic fields
Benji Börner
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Slide2Content
short revision
Surface Plasmon Polariton (SPP) mathematicalSPP excitation by electonsSPP excitation by photonsnanoplasmonic structuresexperimental applications
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Slide3surface plasmons on metal surfacecoherent oscillation of free electronscan be excited by electrons and photons
Revision
www.ucd.ie
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Slide4boundary condition by Maxwell for em wave
mathematical explanation – dispersion relation
mysite.du.edu
/~lconyers/SERDP/Figure5.htm
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Slide5mathematical explanation – dispersion relation
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Slide6mathematical explanation – dispersion relation
real part
imaginary part
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Slide7damping due to ohmic losses and electron-core interactionsmanifestation in imaginary part of dielectric function
mathematical explanation – dispersion relation
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Slide8intensity decreased by absorption (E²)propagation length: intensity at distance x: skin depth formula:
mathematical explanation
http://erbium.ece.mcgill.ca/research/plasmonic-interconnects/
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Slide9electron scattering on surface
parallel part creates surface plasmon polariton
SPP excitation by electrons
Yang
Zhang et.al. “Edge
scattering of surface
plasmons
excited by scanning tunneling microscopy”, Maier - Plasmonics
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Slide10need to match wavelength and momentumtools like prisms or gratings needed
SPP excitation by photons
http://
pjmedia.com/lifestyle/files/2013/07/Dispersion_prism.jpg
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Slide11prism in Kretschmann configurationdifferent dielectric functions match momentumevanescent wave excites SPP
SPP excitation by photons - prism
Google.de ->
Kretschmann
configuration
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Slide12prism in Otto configurationSPP excited on top of metal film
SPP excitation by
photons - prism
http://skullsinthestars.com/2010/09/21/optics-basics-surface-plasmons
/Minghui Hong et.al „ Maskless multibeam laser irradiation enables large-area nanostructure fabrication“
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Slide13excitation with gratingreciprocal grating vector gives imaginary part
SPP excitation by photons - grating
Byoungho
Lee et.al. „Shaping and focusing light beams with plasmonics”
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Slide14SPP scatter on defectsdefects provide free space radiation
SPP excitation
http://www.westga.edu/~chem/facultydocs/stuart.htm
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Slide15nanoplasmonic
structures – gratings
Yongqi
Fu et. al. “Plasmonic Lenses”
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Slide16nanoplasmonic
structures – flat gratings
http://www.cs.huji.ac.il/~ulevy/facil.php
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Slide17nanoplasmonic
structures – concave gratings
Byoungho
Lee et.al. „Shaping and focusing light beams with plasmonics“
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Slide18nanoplasmonic
structures – concentric gratings
Yongqi
Fu et. al. “
Plasmonic
Lenses”
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Slide19nanoplasmonic
structures – nanoholes
Carsten
Sönnichsen
“Plasmons in metal nanostructures”Maier - Plasmonics
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Slide20investigation of surfaces to find defectsidentify density changesmolecular detectors
experimental applications
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Slide21Thank you!
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