Zobrazeno 1 - 10
of 566
pro vyhledávání: '"Hohenau, A."'
Autor:
Schwarzl, Robert, Heim, Pascal, Schiek, Manuela, Grimaldi, Dario, Hohenau, Andreas, Krenn, Joachim R., Koch, Markus
Recording of transient absorption microscopy images requires fast detection of minute optical density changes, which is typically achieved with high-repetition-rate laser sources and lock-in detection. Here, we present a highly flexible and cost-effi
Externí odkaz:
http://arxiv.org/abs/2206.02870
Akademický článek
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Akademický článek
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Autor:
Belitsch, Martin, Dirin, Dmitry N., Kovalenko, Maksym V., Pichler, Kevin, Rotter, Stefan, Ghalgaoui, Ahmed, Ditlbacher, Harald, Hohenau, Andreas, Krenn, Joachim R.
Publikováno v:
In Micro and Nano Engineering November 2022 17
Autor:
Schaffernak, Gernot, Gruber, Christian, Krenn, Joachim R., Krug, Markus, Gašparić, Marija, Belitsch, Martin, Hohenau, Andreas
Publikováno v:
Photonics, Devices, and Systems VI, edited by Pavel Tom\'anek, Dagmar Sender\'akov\'a, Petr P\'ata, Proc. of SPIE Vol. 9450, 94501S (2015)
The combination of single photon emitters (quantum dots) and tailored metal nanoparticles with defined size and shape allows a detailed study of the interaction between light and matter. The enhanced optical near-field of the nanoparticles can strong
Externí odkaz:
http://arxiv.org/abs/1704.06023
Autor:
Martin Belitsch, Dmitry N. Dirin, Maksym V. Kovalenko, Kevin Pichler, Stefan Rotter, Ahmed Ghalgaoui, Harald Ditlbacher, Andreas Hohenau, Joachim R. Krenn
Publikováno v:
Micro and Nano Engineering, Vol 17, Iss , Pp 100167- (2022)
ABSTRACT: Colloidal semiconducting nanocrystals are efficient, stable and spectrally tunable emitters, but achievable optical gain is often limited by fast nonradiative processes. These processes are strongly suppressed in slab-shaped nanocrystals (n
Externí odkaz:
https://doaj.org/article/b503640326a34795a1c6de3850a94aae
Autor:
Truegler, Andreas, Tinguely, Jean-Claude, Krenn, Joachim R., Hohenau, Andreas, Hohenester, Ulrich
Publikováno v:
Phys. Rev. B 83, 081412(R) (2011)
For plasmonic nanoparticles, we investigate the influence of surface roughness inherent to top-down fabrication on the optical properties, and find that it has a surprisingly small influence on the position and width of the plasmon peaks. Our experim
Externí odkaz:
http://arxiv.org/abs/1209.5200
Publikováno v:
Optics Letters 37, 746, 2012
We launch surface plasmons from one end of a silver nanowire by asymmetric illumination with white light and use plasmon-to-light scattering at the nanowire ends to probe spectroscopically the plasmonic Fabry-Perot wire modes. The spectral positions
Externí odkaz:
http://arxiv.org/abs/1209.2808
Autor:
Hohenau, Andreas, Krenn, Joachim R.
Publikováno v:
Phys. Status Solidi RRL 4(10), 256, 2010
Regular arrays of metal nanoparticles on metal films have tuneable optical resonances that can be applied for surface enhanced Raman scattering or biosensing. With the aim of developing more surface selective geometries we investigate regular gold na
Externí odkaz:
http://arxiv.org/abs/1209.2625
Gold Nanoparticles for Plasmonic Biosensing: The Role of Metal Crystallinity and Nanoscale Roughness
Autor:
Tinguely, Jean-Claude, Sow, Idrissa, Leiner, Claude, Grand, Johan, Hohenau, Andreas, Felidj, Nordin, Aubard, Jean, Krenn, Joachim R
Noble metal nanoparticles show specific optical properties due to the excitation of localized surface plasmons that make them attractive candidates for highly sensitive bionanosensors. The underlying physical principle is either an analyte-induced mo
Externí odkaz:
http://arxiv.org/abs/1111.0811