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The section containing accepted papers prior to their appearance in the forthcoming issues of Materials Science-Poland, is available on: Ahead of Print Articles.
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Effects of Polarization of Radiofrequency Radiation in Polycrystalline ESR
V. E. Fainzilberg
Department of Chemistry, Long Island University, USA
Redispersable Nanopowders for Wet Chemical Coatings Processes: Application to Transparent Conducting Coatings
N. Al-Dahoudi, M.A. Aegerter
Institut fuer Neue Materialien gem. GmbH - INM
Department of Coating Technology, Saarbruecken, Germany
Luminescent Materials, Recognition Phases of The Chemical Sensors and Heterogeneous Catalysts Prepared By Sol-Gel Method
Andrzej M. Kłonkowski
Faculty of Chemistry, University of Gdańsk, Poland
Spectroscopic Studies on the Inclusion Complexes of Tetrakis(2-hidroxy-5-nitrophenyl)porphyrin with α-Cyclodextrin in Solution and in Sol-Gel Matrix
A. O. Ribeiro, C. R. Neri, Y. Iamamoto and O. A. Serra
Rare Earth/Bioinorganic Laboratory - Chemistry Department - FFCLRP
University of São Paulo, Brasil
Comparison of Sol-Gel and Solid State Prepared Eu2+ Doped Calcium Aluminates
Tuomas Aitasalo1,2, Jorma Hölsä1,3, Högne Jungner 4, Mika Lastusaari1,2, Janne Niittykoski1,2
1University of Turku, Department of Chemistry, Finland
2Graduate School of Materials Research, Turku, Finland
3ENSCP, CNRS, Laboratoire de Chimie Appliquée de l'Etat Solide, Paris, France
4University of Helsinki, Dating Laboratory, Finland
Highly Porous Aerogels with Very Low Permability
J. Phalippou, T. Woignier, R. Sempéré, Ph. Dieudonné
Laboratoire des Verres - UMR CNRS 5587, Université de Montpellier, France
Abstract
In this paper, we firstly investigate the way the pores are created in silica gel during gelation. Then we show that the solid particle arrangement acts on the geometrical pore characteristics (pore volume and pore size distribution). According to pore size value, the permeability of gels is quite low even if the value of the gel porosity exceeds 95%. Analogous properties can be extended to silica aerogels for which now the solvent is replaced by air. Consequently, and according to their low permeability, light weight aerogels exhibit very striking response to mechanical stresses. Here we report unusual experiments allowing to estimate the mechanical properties of aerogels thanks to the low value of the average pore size. Moreover, one demonstrates that aerogels may be densified at room temperature using an external isostatic pressure. In that case, the pore size may be tailored with respect to the nature and the characteristics of the starting aerogel. The evolution of the textural properties such as the mean pore size and the specific surface area of these tailored aerogels is investigated as a function of isostatic pressure.
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Download article (PDF)The Study of Thermal Disordering of The KSc(WO4)2 Crystal Structure by Raman Spectroscopy
M. M±czka, J. Hanuza, N. Sidorov and S. Kojima
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
The Electrochemical Redox Reactions in Solvated Silica Sol-Gel Glass
Marcin Opallo
Institute of Physical Chemistry, Polish Academy of Sciences, Warszawa, Poland
Structure, Spectroscopy and Dielectric Properties of BaTiO3:Eu3+ Nanocrystallites Prepared by The Sol-Gel Method
D. Hreniaka, E. Łukowiaka, K. Maruszewskia,b, R. P±zikc, and W. Stręka
aInstitute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
bMechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
cChemistry Department, Opole University, Poland
Optical Behavior of Sol-Gel Derived Photonic Structures Formed by Submicron Silica Spheres
M. Jasiorski1, K. Maruszewski1,2 and W. Stręk1
1Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
2Mechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
Lu2O3:Eu, a New X-ray Phosphor
E. Zych*, D. Hreniak and W. Strek
*Faculty of Chemistry, University of Wrocław, Poland
Institute for Low Temperature and Structure Research Polish Academy of Sciences, Wrocław, Poland
Review of Luminescence and Magnetic Properties of Antiferromagnetic KMnCl3, RbMnCl3, TlMnCl3 and (CnH2n+1NH3)2MnCl4 (n = 1, 2)
Małgorzata Pawłowska, Walter Wojciechowski
Institute of Inorganic Chemistry and Metallurgy of Rare Elements,
Wrocław University of Technology, Wrocław, Poland
Photochromic Hybrid Sol-Gel Coatings: Preparation, Properties, and Applications
A. Klukowska1, U. Posset1, G. Schottner1, M. L. Wis2,
C. Salemi-Delvaux 2, V. Malatesta2
1 Fraunhofer-Institut Silicatforschung (ISC), Würzburg, Germany
2 Great Lakes Chemical Corporation, San Donato Milanese, Italy
Opportunities for Sol-Gel Materials in Fuel Cells
Lisa C. Klein
Rutgers-the State University of New Jersey, Ceramic & Materials Engineering, NJ, USA
