Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Marc Egen"'
Publikováno v:
Journal of Pharmaceutical Sciences. 99:303-316
This study aims towards a deeper understanding of the correlation between particle morphology, cohesion forces, and aerosol performance of spray dried powders for inhalation. Therefore, forces affecting cohesion and dispersion are consid- ered and so
Publikováno v:
Photonics and Nanostructures - Fundamentals and Applications. 4:59-68
Light propagation in photonic hetero-crystals, consisting of two opal films with different lattice constants, has been investigated in the realistic regime of weak scattering, when the main light flux is transported by ballistic photons. The light sc
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 32:476-479
The directionality of the polarised light transmission has been studied in heterogeneous photonic crystals based on double-film opal in comparison to homogeneous crystals on single-film opals. In spite of additional scattering at the photonic bandgap
Autor:
Marc Egen, Rudolf Zentel
Publikováno v:
Macromolecular Chemistry and Physics. 205:1479-1488
A systematic investigation of the surfactant-free emulsion polymerization (SFEP) on three different methacrylates (MMA, tert-butyl methacrylate and 2,2,2-trifluoro ethyl methacrylate) is described to obtain monodisperse colloids for the preparation o
Publikováno v:
Macromolecular Materials and Engineering. 289:158-163
In this paper, we describe the use of artificial opals from polymer beads as effect pigments in transparent industial and automotive coatings. For this purpose, we synthesized monodisperse colloids from fluorinated methacrylates by surfactant-free em
Autor:
Clivia M. Sotomayor Torres, Rebecca Voss, Sergei G. Romanov, Rudolf Zentel, B. Griesebock, Marc Egen
Publikováno v:
Chemistry of Materials. 15:3786-3792
This paper describes ways to multilayer opaline films (opaline heterostructures) composed from functional opal layers of spheres with different lattice constants. At first various monodisperse coll...
Autor:
M. J. Minty, Patrick Ferrand, Jouni Ahopelto, C. M. Sotomayor Torres, Sergei G. Romanov, Rudolf Zentel, Marc Egen
Publikováno v:
Nanotechnology
Nanotechnology, Institute of Physics, 2003, 14 (2), pp.323-326. ⟨10.1088/0957-4484/14/2/343⟩
Ferrand, P, Minty, M J, Egen, M, Ahopelto, J, Zentel, R, Romanov, S G & Sotomayor Torres, C M 2003, ' Micromoulding of three-dimensional photonic crystals on silicon substrates ', Nanotechnology, vol. 14, no. 2, pp. 323-326 . https://doi.org/10.1088/0957-4484/14/2/343
Nanotechnology, Institute of Physics, 2003, 14 (2), pp.323-326. ⟨10.1088/0957-4484/14/2/343⟩
Ferrand, P, Minty, M J, Egen, M, Ahopelto, J, Zentel, R, Romanov, S G & Sotomayor Torres, C M 2003, ' Micromoulding of three-dimensional photonic crystals on silicon substrates ', Nanotechnology, vol. 14, no. 2, pp. 323-326 . https://doi.org/10.1088/0957-4484/14/2/343
International audience; The growth of three-dimensional photonic crystals (PhCs) on patterned silicon substrates is reported. It is shown that deep trenches can be uniformly filled by a self-assembly of polymer microspheres, in a close-packed face-ce
Autor:
Jouni Ahopelto, Marc Egen, Andrey L. Rogach, C. M. Sotomayor Torres, Rudolf Zentel, Sergei G. Romanov, Alexander Eychmüller, Patrick Ferrand, Nikolai Gaponik
Publikováno v:
Romanov, S G, Ferrand, P, Egen, M, Zentel, R, Ahopelto, J, Gaponik, N, Eychmueller, A, Rogach, A L & Sotomayor Torres, C M 2003, ' Exploring integration prospects of opal-based photonic crystals ', Synthetic Metals, vol. 139, no. 3, pp. 701-704 . https://doi.org/10.1016/S0379-6779(03)00245-5
Different methods of functionalisation of thin opal films are discussed, including synthesis of opals on pre-patterned substrates, post-synthesis electron beam lithography, preparation of opals with heterogeneous photonic band gap structure and integ
Autor:
Marc Egen, Rudolf Zentel
Publikováno v:
Chemistry of Materials. 14:2176-2183
This paper describes the preparation of monodisperse colloids from various methacrylates. These colloids sediment well on glass slides and formin the dried statelarge three-dimensional face-centered cubic photonic crystal films with Bragg reflection
Publikováno v:
Chemistry of Materials. 14:4023-4025
Cracks, which appear due to shrinkage during drying of artificial opaline films, strongly limit the use of these materials. Crystallization on fluid substrates (liquid metals) is a way to circumvent this problem. By this method it is possible to prep