P. Belleville - Academia.edu (original) (raw)
Papers by P. Belleville
Surface and Coatings Technology, 2008
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Nanoengineering: Fabrication, Properties, Optics, and Devices XII, 2015
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1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255), 1998
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Optics Express, 2011
High optical performance coatings prepared by a liquid deposition process have been studied with ... more High optical performance coatings prepared by a liquid deposition process have been studied with focus on the parameters playing a role on the layer stacking ability. During the development of multilayer optical coatings, defects such as cracks, scattering and a refractive index gradient could appear. In order to understand the origins of these limitations, the investigation was performed on colloidal stacks of single and multi-materials. This study has rendered it possible to define the main process parameters as well as the physical and chemical parameters of the suspensions influencing the stacking capacity. This work is a first step to obtaining evidence of a relationship between the thin film microstructure induced by deposition conditions and the ability to achieve sol-gel thick films with good optical (homogeneous) and mechanical (crack-free) properties.
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IEEE Transactions on Nuclear Science, 2000
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CLEO: 2015, 2015
ABSTRACT
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Materials Science Forum, 2004
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Optical Sensing and Detection II, 2012
ABSTRACT Fluorescent chemical sensors have been widely exploited for the detection and quantifica... more ABSTRACT Fluorescent chemical sensors have been widely exploited for the detection and quantification of trace explosives. Their performances are mainly dependent on the sensitive material. Fluorescent organic materials are very efficient in terms of sensitivity, selectivity and response time but their degradation is a major drawback. Sol-gel materials offer a much longer life span, especially in the case of inorganic sensitive coatings. The elaboration of sol-gel sensitive films is detailed in this paper. Two examples of sol-gel fluorescent sensitive materials are presented: a hybrid organic-inorganic film and an inorganic material.
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Proceedings - IEEE Ultrasonics Symposium, 2007
ABSTRACT High frequency piezoelectric films were prepared using the composite sol-gel technique, ... more ABSTRACT High frequency piezoelectric films were prepared using the composite sol-gel technique, by mixing PZT sol and laboratory-made powders, free-cracked thick films were deposited by dip-coating on silicon, alumina and porous PZT substrates. Only 3 composite layers and few final infiltrations were used to prepare 40 mum thick films. Reproducible electromechanical properties, i.e. thickness coupling coefficients around 40%, were obtained after a poling at 15V mum in an oil bath at 170degC. A pulse echo response was measured with a 35 mum thick film deposited on a porous PZT substrate. The corresponding characteristics are an axial resolution of 45 mum (with a bandwidth at 80*%) at -6dB and a center frequency of 20 MHz. These results showed that the composite sol-gel process is a good candidate to produce piezoelectric films with a thickness of few tens of microns with a minimization of fabrication steps.
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Solid State Nuclear Magnetic Resonance, 2004
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Nature Materials, 2006
The elaborate performances characterizing natural materials result from functional hierarchical c... more The elaborate performances characterizing natural materials result from functional hierarchical constructions at scales ranging from nanometres to millimetres, each construction allowing the material to fit the physical or chemical demands occurring at these different levels. Hierarchically structured materials start to demonstrate a high input in numerous promising applied domains such as sensors, catalysis, optics, fuel cells, smart biologic and cosmetic vectors. In particular, hierarchical hybrid materials permit the accommodation of a maximum of elementary functions in a small volume, thereby optimizing complementary possibilities and properties between inorganic and organic components. The reported strategies combine sol-gel chemistry, self-assembly routes using templates that tune the material's architecture and texture with the use of larger inorganic, organic or biological templates such as latex, organogelator-derived fibres, nanolithographic techniques or controlled phase separation. We propose an approach to forming transparent hierarchical hybrid functionalized membranes using in situ generation of mesostructured hybrid phases inside a non-porogenic hydrophobic polymeric host matrix. We demonstrate that the control of the multiple affinities existing between organic and inorganic components allows us to design the length-scale partitioning of hybrid nanomaterials with tuned functionalities and desirable size organization from ångström to centimetre. After functionalization of the mesoporous hybrid silica component, the resulting membranes have good ionic conductivity offering interesting perspectives for the design of solid electrolytes, fuel cells and other ion-transport microdevices.
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Journal of the European Ceramic Society, 2008
In this study, high performance piezoelectric thick films were prepared by depositing only a few ... more In this study, high performance piezoelectric thick films were prepared by depositing only a few sol–gel infiltrated composite layers on Si/SiO2/Ti/Pt wafers. Lead zirconate titanate (PZT) powder, binder and infiltration sol were synthesised from the same-laboratory made time-stable polymeric PZT sol. Adding coarse powder (50 wt%) to the sol precursor, crack-free coatings were prepared by dip coating in the 30–50μm thickness range in only 3–6 layers. The results showed that good performance can be achieved by controlling sol ...
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Journal of Sol-Gel Science and Technology, 2008
Abstract In this work, piezoelectric PbZr 0.52 Ti 0.48 O 3 (PZT) thick films were deposited onto ... more Abstract In this work, piezoelectric PbZr 0.52 Ti 0.48 O 3 (PZT) thick films were deposited onto silicon and alumina substrates using sol-gel composite slurry. Thick films prepared with rough and attrited powders are compared. A time stable polymeric PZT sol was first synthesised as the binder. It was then used as a precursor for PZT powder fabrication. Powder attrition ball milling was optimised to reduce the particles size to 200 nm. Composite slurries were obtained by mixing PZT sol with attrited or rough powders and thick films ...
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Journal of Sol-Gel Science and Technology, 1994
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Journal of Materials Chemistry, 2005
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European Journal of Inorganic Chemistry, 2008
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Chemistry of Materials, 2008
... Advanced Mesostructured Hybrid Silica−Nafion Membranes for High-Performance PEM Fuel Cell. ..... more ... Advanced Mesostructured Hybrid Silica−Nafion Membranes for High-Performance PEM Fuel Cell. ... perfluorosulfonic polymers such as Nafion have been the reference membrane for fuel ... of their high electrochemical properties as well as excellent chemical resistance.(2) There is ...
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Chemical Society Reviews, 2011
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Surface and Coatings Technology, 2008
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Nanoengineering: Fabrication, Properties, Optics, and Devices XII, 2015
Bookmarks Related papers MentionsView impact
1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255), 1998
Bookmarks Related papers MentionsView impact
Optics Express, 2011
High optical performance coatings prepared by a liquid deposition process have been studied with ... more High optical performance coatings prepared by a liquid deposition process have been studied with focus on the parameters playing a role on the layer stacking ability. During the development of multilayer optical coatings, defects such as cracks, scattering and a refractive index gradient could appear. In order to understand the origins of these limitations, the investigation was performed on colloidal stacks of single and multi-materials. This study has rendered it possible to define the main process parameters as well as the physical and chemical parameters of the suspensions influencing the stacking capacity. This work is a first step to obtaining evidence of a relationship between the thin film microstructure induced by deposition conditions and the ability to achieve sol-gel thick films with good optical (homogeneous) and mechanical (crack-free) properties.
Bookmarks Related papers MentionsView impact
IEEE Transactions on Nuclear Science, 2000
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
CLEO: 2015, 2015
ABSTRACT
Bookmarks Related papers MentionsView impact
Materials Science Forum, 2004
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Optical Sensing and Detection II, 2012
ABSTRACT Fluorescent chemical sensors have been widely exploited for the detection and quantifica... more ABSTRACT Fluorescent chemical sensors have been widely exploited for the detection and quantification of trace explosives. Their performances are mainly dependent on the sensitive material. Fluorescent organic materials are very efficient in terms of sensitivity, selectivity and response time but their degradation is a major drawback. Sol-gel materials offer a much longer life span, especially in the case of inorganic sensitive coatings. The elaboration of sol-gel sensitive films is detailed in this paper. Two examples of sol-gel fluorescent sensitive materials are presented: a hybrid organic-inorganic film and an inorganic material.
Bookmarks Related papers MentionsView impact
Proceedings - IEEE Ultrasonics Symposium, 2007
ABSTRACT High frequency piezoelectric films were prepared using the composite sol-gel technique, ... more ABSTRACT High frequency piezoelectric films were prepared using the composite sol-gel technique, by mixing PZT sol and laboratory-made powders, free-cracked thick films were deposited by dip-coating on silicon, alumina and porous PZT substrates. Only 3 composite layers and few final infiltrations were used to prepare 40 mum thick films. Reproducible electromechanical properties, i.e. thickness coupling coefficients around 40%, were obtained after a poling at 15V mum in an oil bath at 170degC. A pulse echo response was measured with a 35 mum thick film deposited on a porous PZT substrate. The corresponding characteristics are an axial resolution of 45 mum (with a bandwidth at 80*%) at -6dB and a center frequency of 20 MHz. These results showed that the composite sol-gel process is a good candidate to produce piezoelectric films with a thickness of few tens of microns with a minimization of fabrication steps.
Bookmarks Related papers MentionsView impact
Solid State Nuclear Magnetic Resonance, 2004
Bookmarks Related papers MentionsView impact
Nature Materials, 2006
The elaborate performances characterizing natural materials result from functional hierarchical c... more The elaborate performances characterizing natural materials result from functional hierarchical constructions at scales ranging from nanometres to millimetres, each construction allowing the material to fit the physical or chemical demands occurring at these different levels. Hierarchically structured materials start to demonstrate a high input in numerous promising applied domains such as sensors, catalysis, optics, fuel cells, smart biologic and cosmetic vectors. In particular, hierarchical hybrid materials permit the accommodation of a maximum of elementary functions in a small volume, thereby optimizing complementary possibilities and properties between inorganic and organic components. The reported strategies combine sol-gel chemistry, self-assembly routes using templates that tune the material's architecture and texture with the use of larger inorganic, organic or biological templates such as latex, organogelator-derived fibres, nanolithographic techniques or controlled phase separation. We propose an approach to forming transparent hierarchical hybrid functionalized membranes using in situ generation of mesostructured hybrid phases inside a non-porogenic hydrophobic polymeric host matrix. We demonstrate that the control of the multiple affinities existing between organic and inorganic components allows us to design the length-scale partitioning of hybrid nanomaterials with tuned functionalities and desirable size organization from ångström to centimetre. After functionalization of the mesoporous hybrid silica component, the resulting membranes have good ionic conductivity offering interesting perspectives for the design of solid electrolytes, fuel cells and other ion-transport microdevices.
Bookmarks Related papers MentionsView impact
Journal of the European Ceramic Society, 2008
In this study, high performance piezoelectric thick films were prepared by depositing only a few ... more In this study, high performance piezoelectric thick films were prepared by depositing only a few sol–gel infiltrated composite layers on Si/SiO2/Ti/Pt wafers. Lead zirconate titanate (PZT) powder, binder and infiltration sol were synthesised from the same-laboratory made time-stable polymeric PZT sol. Adding coarse powder (50 wt%) to the sol precursor, crack-free coatings were prepared by dip coating in the 30–50μm thickness range in only 3–6 layers. The results showed that good performance can be achieved by controlling sol ...
Bookmarks Related papers MentionsView impact
Journal of Sol-Gel Science and Technology, 2008
Abstract In this work, piezoelectric PbZr 0.52 Ti 0.48 O 3 (PZT) thick films were deposited onto ... more Abstract In this work, piezoelectric PbZr 0.52 Ti 0.48 O 3 (PZT) thick films were deposited onto silicon and alumina substrates using sol-gel composite slurry. Thick films prepared with rough and attrited powders are compared. A time stable polymeric PZT sol was first synthesised as the binder. It was then used as a precursor for PZT powder fabrication. Powder attrition ball milling was optimised to reduce the particles size to 200 nm. Composite slurries were obtained by mixing PZT sol with attrited or rough powders and thick films ...
Bookmarks Related papers MentionsView impact
Journal of Sol-Gel Science and Technology, 1994
Bookmarks Related papers MentionsView impact
Journal of Materials Chemistry, 2005
Bookmarks Related papers MentionsView impact
European Journal of Inorganic Chemistry, 2008
Bookmarks Related papers MentionsView impact
Chemistry of Materials, 2008
... Advanced Mesostructured Hybrid Silica−Nafion Membranes for High-Performance PEM Fuel Cell. ..... more ... Advanced Mesostructured Hybrid Silica−Nafion Membranes for High-Performance PEM Fuel Cell. ... perfluorosulfonic polymers such as Nafion have been the reference membrane for fuel ... of their high electrochemical properties as well as excellent chemical resistance.(2) There is ...
Bookmarks Related papers MentionsView impact
Chemical Society Reviews, 2011
Bookmarks Related papers MentionsView impact