Zobrazeno 1 - 10
of 36
pro vyhledávání: '"and Eberhard Hartmann"'
Publikováno v:
Journal of Nanoscience and Nanotechnology. 8:702-716
Lead titanate (PbTiO3) micro- and nanocrystalline powders have been prepared from metallo-oranic precursor through combined polymerisation and pyrolysis (CPP). The enhanced liquid-precursor based version of the cpp route in combination with soft mill
Autor:
Hazem Khalil, Ludmila Makhova, Andrea Prager-Duschke, Eberhard Hartmann, Michael R. Buchmeiser, Luise Wennrich, Reiner Mehnert, Christoph Dipl.-Ing. Thieroff, Karl Heinz Hallmeier, Hans-Jürgen Gläsel
Publikováno v:
Macromolecular Materials and Engineering. 292:1140-1148
Amorphous aluminium carboxylate nanoparticles were checked for their potential as precursors for nano-corundum powders prepared by a high-temperature conversion process. Exemplifying x-ray photoelectron spectroscopy studies of the aluminium carboxyla
Publikováno v:
Macromolecular Materials and Engineering. 292:70-77
A mixture of novel aluminium carboxylate nanoparticles and aluminium hydroxide ultrafine powder was prepared via precipitation reaction between Al(2-PrO) 3 and maleic acid. In this mixture both free primary particles occur (mean geometrical size arou
Autor:
Robertas Grigalaitis, Saulius Lapinskas, Rolf Boettcher, Juras Banys, Eberhard Hartmann, H. Juergen Glaesel, Emre Erdem
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 53:2270-2274
In this paper the dielectric properties of nanosize ferroelectric lead titanate crystals are presented. The PbTiO3 samples were prepared by pressing nanopowder into the plates and have been studied experimentally by dielectric permittivity measuremen
Autor:
Emre Erdem, Anke Matthes, Juras Banys, Holger Rumpf, H.-C. Semmelhack, Hans-Jürgen Gläsel, Eberhard Hartmann, Dietmar Hirsch, Rolf Böttcher
Publikováno v:
Journal of Physics: Condensed Matter. 18:3861-3874
The CPP (combined polymerization and pyrolysis) preparation route, in its enhanced liquid-precursor-based version, was combined with consecutive soft milling. For studies of temperature- and size-dependent structural changes occurring in ferroelectri
Publikováno v:
Ferroelectrics. 316:43-49
To study the effect of the particle size on the material properties, Mn 2 + EPR and 137 Ba NMR measurements were performed on BaTiO 3 particles with average diameters between 15 nm and 255 nm. Typical changes in the fine structure tensor and the quad
Autor:
Horst Ernst, Reiner Mehnert, Hans-Jürgen Gläsel, Frank Bauer, Ulrich Decker, A. Freyer, Eberhard Hartmann, Volker Sauerland
Publikováno v:
Progress in Organic Coatings. 47:147-153
Transparent reinforced polyacrylates were prepared using nanosized filler particles with radiation-curable acrylates. To improve embedding of the nanofillers within the acrylate matrix the filler surface was chemically modified. This modification of
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 208:267-270
To obtain transparent, scratch and abrasion resistant coatings a high content of nanosized silica and alumina filler was embedded in radiation-curable acrylate formulations by acid catalyzed silylation using trialkoxysilanes. 29SiMAS NMR and MALDI-TO
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 208:303-308
Though polymerisation-active metallo-organic nanoparticles have proven exceedingly efficient in modifying the viscoelastic properties of UV and EB crosslinked polymeric nanocomposites, they are obviously unsuitable for practical applications. Rather,
Autor:
Matthias Findeisen, Horst Ernst, Volker Sauerland, Hans-Jürgen Gläsel, Frank Bauer, Helmut Langguth, Eberhard Hartmann, Reiner Mehnert, Bärbel Marquardt
Publikováno v:
Macromolecular Materials and Engineering. 287:546-552
After modification with different trialkoxysilanes, nano-sized silica and alumina particles were used as fillers in transparent UV/EB curable acrylates for polymer reinforcement, particularly to attain scratch and abrasion resistant coatings. The aci