Zobrazeno 1 - 10
of 48
pro vyhledávání: '"R. Neuendorf"'
Publikováno v:
Physics of Fluids. 16:2158-2169
This paper describes an experimental search for large streamwise vortices in a turbulent wall jet flowing over a convex surface. The existence of these vortices resulting from a centrifugal instability was suspected but never previously observed in t
Autor:
Adam Cohen Simonsen, Katharina Al-Shamery, Frank Balzer, Horst-Günter Rubahn, R. Neuendorf, Vladimir Bordo
Publikováno v:
Balzer, F, Bordo, V G, Neuendorf, R, Al-Shamery, K, Simonsen, A C & Rubahn, H-G 2004, ' Organic Nanoaggregates: A Window to Submicron Optics ', IEEE Transactions on Nanotechnology, vol. 3, no. 1, pp. 67-72 . https://doi.org/10.1109/TNANO.2004.824032
Nanoscaled photonic devices rely on a thorough understanding of the influence of microscopic morphological changes on the optoelectronic properties. Here, we investigate as a model system, organic nanofibers and microrings from para-phenylene molecul
Autor:
R Puustinen, R Neuendorf
Publikováno v:
Focus on Alternative and Complementary Therapies. 21:50-51
Publikováno v:
physica status solidi (a). 197:117-122
Laser assisted etching of n-type silicon, without an applied potential, to form porous silicon has been studied in a variety of etchants. The range of pore diameters correlates with the ratio of the activities of HF and HF - 2 . Where the activity ra
Publikováno v:
Balzer, F, Al-Shamery, K, Neuendorf, R & Rubahn, H-G 2003, ' Nonlinear Optics of Hexaphenyl Nanofibers ', Chemical Physics Letters, vol. 3-4, pp. 307-312 . https://doi.org/10.1016/S0009-2614(02)01865-1
The nonlinear optical response of films of needle-shaped para-hexaphenyl nanoaggregates on mica surfaces is investigated. Two-photon luminescence as well as optical second harmonic generation (SHG) are observed following excitation with femtosecond p
Publikováno v:
Physics of Fluids. 13:1822-1825
Flow visualization and correlation measurements revealed the existence of large streamwise vortices in a turbulent wall jet that is attached to a circular cylinder. These coherent structures were not to be found near the nozzle, nor were they artific
Publikováno v:
Nanostructured Materials. 11:1335-1342
The importance of the internal interfaces between structural elements and their surroundings for the electronic properties of nanostructured materials is stressed by giving a brief overview of recent optical experiments on several different kinds of
Autor:
R. Neuendorf, Israel Wygnanski
Publikováno v:
Journal of Fluid Mechanics. 381:1-25
The effect of surface curvature on the development of a two-dimensional wall jet was investigated experimentally. A comparison was made between a wall jet flowing around a circular cylinder and its plane equivalent. Velocity surveys and surface press
Publikováno v:
The Journal of Chemical Physics. 104:6348-6354
We report about the observation of intrinsic optical bistability of nanometer‐size spherical CdS particles coated with silver. The particles were chemically prepared as isolated CdS clusters in aqueous suspensions and coated with silver by chemical
Autor:
Maria Teresa Neves-Petersen, Katharina Al-Shamery, R. Neuendorf, Horst-Günter Rubahn, Kasper Thilsing-Hansen, Steffen B. Petersen
Publikováno v:
Thilsing-Hansen, K, Neves-Petersen, M T, Petersen, S B, Neuendorf, R, Al-Shamery, K & Rubahn, H-G 2005, ' Luminescence decay of oriented phenylene nanofibers ', Physical Review B, vol. 72, no. 11, pp. 115213-9 . https://doi.org/10.1103/PhysRevB.72.115213
Petersen, S B, Thilsing-Hansen, K, Neuendorf, R, Al-Shamery, K, Rubahn, H-G & Petersen, M T N 2005, ' Luminescence decay of oriented phenylene nanofibers ', Physical Review B. Condensed Matter and Materials Physics, vol. 72, no. 11, pp. 115213-.
Petersen, S B, Thilsing-Hansen, K, Neuendorf, R, Al-Shamery, K, Rubahn, H-G & Petersen, M T N 2005, ' Luminescence decay of oriented phenylene nanofibers ', Physical Review B. Condensed Matter and Materials Physics, vol. 72, no. 11, pp. 115213-.
The temporal decay of femtosecond UV light (266 nm) induced luminescence of arrays of hundreds of micrometers long organic nanofibers from phenylenes and substituted phenylenes with nanometric widths and heights is investigated. From a fit to the exp