Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Alfred Leitner"'
Autor:
Stefan Köstler, Harald Ditlbacher, Uwe B. Sleytr, Norbert Reitinger, Birgit Kainz, Alfred Leitner, Nicole Steiner, Sylvia R. Scheicher, Volker Ribitsch, Dietmar Pum
Publikováno v:
Biosensors and Bioelectronics. 40:32-37
There is a growing demand for functional layers for the immobilization of (bio)molecules on different kinds of substrates in the field of biosensors, microarrays, and lab-on-a-chip development. These functional coatings should have the ability to spe
Autor:
Ulrich Hohenester, Alfred Leitner, Andreas Trügler, Markus K. Krug, Joachim R. Krenn, V. Leitgeb, Andreas Hohenau, Stefan Köstler
Publikováno v:
Nanoscale. 8(5)
An experimental three dimensional characterization of the local refractive index sensitivity of plasmonic gold nanorods is performed by controlled apposition of lithographic nanostructures. We show up to seven times higher sensitivity values to local
Publikováno v:
physica status solidi (a). 208:710-714
Luminescence spectroscopy and time-resolved measurements of CdSe/ZnS quantum dots (QDs) in 20 nm thick poly(methyl methacrylate) (PMMA) films reveal radiationless energy transfer from smaller to larger QDs. As confirmed by electron microscopy, the ob
Autor:
Andreas Hohenau, Harald Ditlbacher, Joachim R. Krenn, Alfred Leitner, Emil J. W. List, Nicole Galler, Daniel Koller, Frank-Dieter Reil, Franz R. Aussenegg
Publikováno v:
Nature Photonics. 2:684-687
An organic LED that acts as an electrically driven source of surface plasmons is reported. The device generates a freely propagating beam of surface plasmons and has potential applications in integrated organic photonics and sensing.
Autor:
Daniel Koller, Harald Ditlbacher, A. Drezet, Joachim R. Krenn, Alfred Leitner, Franz R. Aussenegg, Andrey L. Stepanov, Andreas Hohenau, B. Steinberger
Publikováno v:
Materials Science and Engineering: B. 149:220-229
We review the principle and methodology of leakage radiation microscopy (LRM) applied to surface plasmon polaritons (SPPs). Therefore we first analyse in detail the electromagnetic theory of leaky SPP waves. We show that LRM is a versatile optical fa
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 9:S437-S442
Nanometre-sized metal structures support localized surface plasmons associated with the collective oscillations of conduction band electrons. These modes can give rise to a drastic enhancement of local electromagnetic fields close to the surface of t
Autor:
B. Steinberger, Joachim R. Krenn, Andrey L. Stepanov, Harald Ditlbacher, Aurélien Drezet, Franz R. Aussenegg, Andreas Hohenau, Alfred Leitner
Publikováno v:
Plasmonics. 1:141-145
We present a quantitative experimental analysis of a surface plasmon polariton (SPP) interferometer relying on elliptical Bragg mirrors. By using a leakage radiation microscope, we observe oscillation fringes with unit visibility at the two interfero
Autor:
Joachim R. Krenn, Harald Ditlbacher, Alfred Leitner, Bernhard Lamprecht, Andreas Hohenau, Franz R. Aussenegg
Publikováno v:
Microelectronic Engineering. 83:1464-1467
Nanooptics, in particular optics with nanometric metal structures is currently a fast developing field of science, motivated by the prospects of good integrateability to microelectronics. In the following, we give a short introduction to the field of
Autor:
Harald Ditlbacher, Andreas Hohenau, Gerburg Schider, Alfred Leitner, Franz R. Aussenegg, Joachim R. Krenn, Marco Salerno
Publikováno v:
Optics Communications. 248:543-549
We report on scanning near-field optical microscopy of one-dimensional chains of gold nanoparticles which are optically excited at their particle plasmon frequency under total internal reflection. Shape and mutual distance of the nanoparticles are ta
Autor:
Gerburg Schider, Andreas Hohenau, Harald Ditlbacher, Franz R. Aussenegg, Alfred Leitner, Joachim R. Krenn, William L. Schaich
Publikováno v:
Europhysics Letters (EPL). 69:538-543
We report on near-field measurements and calculations of the optical intensity close to rod-shaped gold nanoparticles excited at a multipolar plasmon resonance. Our results reveal a distinct optical near-field pattern and show that multipolar plasmon