Détail de l'auteur
Auteur Salah Sahli |
Documents disponibles écrits par cet auteur (7)
Affiner la recherche Interroger des sources externesContribution à l’étude des propriétés électriques dans les matériaux hétérogènes. / Dounia zed Mezdour
Titre : Contribution à l’étude des propriétés électriques dans les matériaux hétérogènes. Type de document : texte imprimé Auteurs : Dounia zed Mezdour, Auteur ; Salah Sahli, Directeur de thèse ; Mohamed Tabellout, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 157 f. Format : 31 cm Note générale : DOCTORAT EN SCIENCES
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Matrice polymère Composites PANI Percolation Fibre Résistance électrique Simulation Electronique Index. décimale : 621 Electronique Diplôme : Doctorat en sciences En ligne : ../theses/electronique/MEZ5903.pdf Permalink : index.php?lvl=notice_display&id=5702 Contribution à l’étude des propriétés électriques dans les matériaux hétérogènes. [texte imprimé] / Dounia zed Mezdour, Auteur ; Salah Sahli, Directeur de thèse ; Mohamed Tabellout, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 157 f. ; 31 cm.
DOCTORAT EN SCIENCES
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Matrice polymère Composites PANI Percolation Fibre Résistance électrique Simulation Electronique Index. décimale : 621 Electronique Diplôme : Doctorat en sciences En ligne : ../theses/electronique/MEZ5903.pdf Permalink : index.php?lvl=notice_display&id=5702 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEZ/5903 MEZ/5903 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution a l'utilisation de sondes électrostatiques pour l'analyse In-Situ des films minces de polysiloxane deposes par plasma BF Type de document : texte imprimé Auteurs : A Zaatri, Auteur ; Salah Sahli, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 1993 Importance : 174 f. Format : 30 cm. Note générale : 2 copies disponibles en buc Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Le plasma Polymérisation par plasma Index. décimale : 621 Electronique Diplôme : Magistère Permalink : index.php?lvl=notice_display&id=9828 Contribution a l'utilisation de sondes électrostatiques pour l'analyse In-Situ des films minces de polysiloxane deposes par plasma BF [texte imprimé] / A Zaatri, Auteur ; Salah Sahli, Directeur de thèse . - Constantine : Université Mentouri Constantine, 1993 . - 174 f. ; 30 cm.
2 copies disponibles en buc
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Le plasma Polymérisation par plasma Index. décimale : 621 Electronique Diplôme : Magistère Permalink : index.php?lvl=notice_display&id=9828 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ZAA/2511 ZAA/2511 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude de l’effet de la composition d’une couche mince et de ses conditions d’élaboration par plasma froid à partir de vapeurs organosiliciées sur les propriétés de surface d’un film polymérique Type de document : texte imprimé Auteurs : Abdelouahab Nouicer Ilyès dit, Auteur ; Salah Sahli, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 159 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : HMDSO Polyimide traitement de surface mouillabilité super-hydrophobie nanopoudre PECVD RCER FTIR MEB AFM surface treatment wettability super-hydrophobic nanopowder SEM البولیمید معالجة السطح البلل المساحیق النانومتریة Index. décimale : 621 Electronique Résumé : Plasma polymerization of hexamethyldisiloxane (PPHMDSO) was used to deposit SiOxCyHz thin films on silicon and polyimide substrates, using low-frequency plasma and microwave plasma discharge at low pressure. The effects of plasma chamber pressure, oxygen rate in Ar/O2 mixture, treatment time and post-treatment on the films characteristics were studied.
The thickness, surface properties and chemical structure of the deposited thin films were analyzed using profilo-meter measurements, scanning electron microscopy (SEM), static contact angle and infrared spectroscopy (FTIR and FTIR-ATR). At low frequencies and for certain deposition parameters, nano-powders of different concentrations and sizes were
observed on the deposited thin films surface. The FTIR analysis revealed that the chemical formula of the deposited layers is close to SiOxCyHz one, with more organic character when chamber pressure and/or deposition time were increased. Water contact angle measurements show that the increase in the deposition pressure and deposition time leads to the growth on
the polyimide and silicon substrates of thin layers with super-hydrophobic surface due to the increase in the concentration of the nano-powders on the treated surfaces. Plasmas created in HMDSO vapours using a microwave frequency plasma in ECR reactor leads to the deposition of similar PPHMDSO thin layer on polyimide and silicon surfaces. A post-treatment of these
coating layers using a microwave plasma created in Ar/O2 mixtures shows that the increase of oxygen rate in this mixture and the increase in the post-treatment time induces a significant decrease of the contact angle because of a decrease in the layers roughness (revealed by AFM characterization) and mainly, because of a more surface oxidation of the thin layers (revealed by FTIR analyzes)
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/NOU7147.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10456 Etude de l’effet de la composition d’une couche mince et de ses conditions d’élaboration par plasma froid à partir de vapeurs organosiliciées sur les propriétés de surface d’un film polymérique [texte imprimé] / Abdelouahab Nouicer Ilyès dit, Auteur ; Salah Sahli, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 159 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : HMDSO Polyimide traitement de surface mouillabilité super-hydrophobie nanopoudre PECVD RCER FTIR MEB AFM surface treatment wettability super-hydrophobic nanopowder SEM البولیمید معالجة السطح البلل المساحیق النانومتریة Index. décimale : 621 Electronique Résumé : Plasma polymerization of hexamethyldisiloxane (PPHMDSO) was used to deposit SiOxCyHz thin films on silicon and polyimide substrates, using low-frequency plasma and microwave plasma discharge at low pressure. The effects of plasma chamber pressure, oxygen rate in Ar/O2 mixture, treatment time and post-treatment on the films characteristics were studied.
The thickness, surface properties and chemical structure of the deposited thin films were analyzed using profilo-meter measurements, scanning electron microscopy (SEM), static contact angle and infrared spectroscopy (FTIR and FTIR-ATR). At low frequencies and for certain deposition parameters, nano-powders of different concentrations and sizes were
observed on the deposited thin films surface. The FTIR analysis revealed that the chemical formula of the deposited layers is close to SiOxCyHz one, with more organic character when chamber pressure and/or deposition time were increased. Water contact angle measurements show that the increase in the deposition pressure and deposition time leads to the growth on
the polyimide and silicon substrates of thin layers with super-hydrophobic surface due to the increase in the concentration of the nano-powders on the treated surfaces. Plasmas created in HMDSO vapours using a microwave frequency plasma in ECR reactor leads to the deposition of similar PPHMDSO thin layer on polyimide and silicon surfaces. A post-treatment of these
coating layers using a microwave plasma created in Ar/O2 mixtures shows that the increase of oxygen rate in this mixture and the increase in the post-treatment time induces a significant decrease of the contact angle because of a decrease in the layers roughness (revealed by AFM characterization) and mainly, because of a more surface oxidation of the thin layers (revealed by FTIR analyzes)
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/NOU7147.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10456 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité NOU/7147 NOU/7147 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude de la formation de poudres par plasmas basse pression à partir de vapeurs d’hexamethyldisiloxane et à partir de méthane. Type de document : texte imprimé Auteurs : Youcef Fermi, Auteur ; Salah Sahli, Directeur de thèse ; Khaled Hassouni, Directeur de thèse Mention d'édition : 22 décembre 2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 150 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Electronique :Micro-Nanoélectronique et Photonique Plasmas basse pression Poudres PECVD HMDSO Nanoparticules Torche CH4 nanodiamant Low pressure plasmas Powders nanodiamond بلازما الضغط المنخفض المساحيق الترسيب الكيميائي للغاز المحسن بالبلازما سداسي ميثيل ثنائي أكسيد السليسيوم الجسيمات النانوية الشعلة الميثان الماس النانوي Index. décimale : 621 Electronique Résumé :
This work is concerned with the study of powders created in low pressure plasma in hexamethyldisiloxane vapors and the study of powders created by plasma torch from a mixture of CH4 / H2. The formation of powders in the gas phase of the HMDSO vapors was detected by monitoring the electrical signal delivered by the plasma generator that we carried out and by studying the luminescence of the plasma by optical emission spectroscopy. This latest diagnostic technique has shown that the evolution of emission intensities of Si-O and Si-H species is related to the formation of powders. The SEM observations of the deposits made, showed the presence of powders on the substrates, the size and shape of which depend on the deposit parameters. Analysis of thin layers produced by FTIR spectroscopy and EDX microanalysis of powders have shown that the latter are of the SiOxCy: H type. We have developed a new way to synthesize at room temperature, starting from a methane / hydrogen mixture, powders rich in nanodiamond particles using a microwave plasma microtroche that we have produced locally. The gas phase of the micro-torch plasma was characterized by high-resolution optical emission spectroscopy and determined the gas temperature as well as the electron density of the micro-torch plasma. The morphology, structure and composition of the nanoparticles that we deposited by this method were made by SEM and TEM microscopy, by Raman spectroscopy and EELS. These characterization techniques have clearly
confirmed the presence of nanodiamond for certain deposition conditions.
Diplôme : Doctorat En ligne : ../theses/electronique/FER7846.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11749 Etude de la formation de poudres par plasmas basse pression à partir de vapeurs d’hexamethyldisiloxane et à partir de méthane. [texte imprimé] / Youcef Fermi, Auteur ; Salah Sahli, Directeur de thèse ; Khaled Hassouni, Directeur de thèse . - 22 décembre 2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 150 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Electronique :Micro-Nanoélectronique et Photonique Plasmas basse pression Poudres PECVD HMDSO Nanoparticules Torche CH4 nanodiamant Low pressure plasmas Powders nanodiamond بلازما الضغط المنخفض المساحيق الترسيب الكيميائي للغاز المحسن بالبلازما سداسي ميثيل ثنائي أكسيد السليسيوم الجسيمات النانوية الشعلة الميثان الماس النانوي Index. décimale : 621 Electronique Résumé :
This work is concerned with the study of powders created in low pressure plasma in hexamethyldisiloxane vapors and the study of powders created by plasma torch from a mixture of CH4 / H2. The formation of powders in the gas phase of the HMDSO vapors was detected by monitoring the electrical signal delivered by the plasma generator that we carried out and by studying the luminescence of the plasma by optical emission spectroscopy. This latest diagnostic technique has shown that the evolution of emission intensities of Si-O and Si-H species is related to the formation of powders. The SEM observations of the deposits made, showed the presence of powders on the substrates, the size and shape of which depend on the deposit parameters. Analysis of thin layers produced by FTIR spectroscopy and EDX microanalysis of powders have shown that the latter are of the SiOxCy: H type. We have developed a new way to synthesize at room temperature, starting from a methane / hydrogen mixture, powders rich in nanodiamond particles using a microwave plasma microtroche that we have produced locally. The gas phase of the micro-torch plasma was characterized by high-resolution optical emission spectroscopy and determined the gas temperature as well as the electron density of the micro-torch plasma. The morphology, structure and composition of the nanoparticles that we deposited by this method were made by SEM and TEM microscopy, by Raman spectroscopy and EELS. These characterization techniques have clearly
confirmed the presence of nanodiamond for certain deposition conditions.
Diplôme : Doctorat En ligne : ../theses/electronique/FER7846.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11749 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité FER/7846 FER/7846 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude et réalisation d’un jet de plasma pour applications dans le domaine biomédical. Type de document : texte imprimé Auteurs : Mohamed Tahar Benabbas, Auteur ; Salah Sahli, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 116 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Jet de plasma excitation AC excitation impulsionnelle espèces réactives inactivation Escherichia coli eau déminéralisée Plasma jet AC excitation pulsed excitation reactive species deionized water منفث البلازما العناصر الكميائية التفاعلية جهد كهربائي متناوب جهد كهربائي شكل
نبضات مركبات كميائية تفاعلية تثبيط الإشريكية القولونية مياه منزوعة المعادنIndex. décimale : 621 Electronique Résumé : An atmospheric pressure plasma jet generation system for biomedical applications consisting of an alternating high voltage generator and a dielectric barrier discharge (DBD) based cylindrical reactor has been realized in the framework of this thesis.
In order to determine the optimal parameters for the plasma jet generation by an AC or pulsed excitation and to ensure maximum exploitation of this latter, we carried out a series of electrical and optical measurements. The effects of the variation of the nature of the excitation signal, the applied voltage amplitude and frequency on the geometry of the jet and the reactive species created in air by this plasma jet were studied.
First, we used our plasma jet created in using argon at atmospheric pressure for the inactivation of Escherichia coli bacterium spread on a solid surface. We have shown that the inactivation capacity of microorganisms by this plasma jet is directly related to the distance jet source – treated surface as well as to the duration of the treatment. The inactivation rate is more significant as the jet source – sample distance is minimal and the treatment duration is high.
Secondly, we treated deionized water contaminated with E-coli bacteria using our plasma jet. We have shown that this treatment allows the creation of ozone, hydrogen peroxide and nitrite. However, the concentrations of these species generated by the plasma jet remain relatively low in order to obtain an effective inactivation of Escherichia coli present in the same amount of deionized water.
These investigations have shown that the composition and the dimensions of the created plasma jet can be controlled by means the nature of the excitation signal, its amplitude and / or its frequency. They have also shown that our plasma jet is more effective for the treatment of solid surfaces than for the treatment of aqueous media.
Diplôme : Doctorat En ligne : ../theses/electronique/BEN7293.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10908 Etude et réalisation d’un jet de plasma pour applications dans le domaine biomédical. [texte imprimé] / Mohamed Tahar Benabbas, Auteur ; Salah Sahli, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 116 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Jet de plasma excitation AC excitation impulsionnelle espèces réactives inactivation Escherichia coli eau déminéralisée Plasma jet AC excitation pulsed excitation reactive species deionized water منفث البلازما العناصر الكميائية التفاعلية جهد كهربائي متناوب جهد كهربائي شكل
نبضات مركبات كميائية تفاعلية تثبيط الإشريكية القولونية مياه منزوعة المعادنIndex. décimale : 621 Electronique Résumé : An atmospheric pressure plasma jet generation system for biomedical applications consisting of an alternating high voltage generator and a dielectric barrier discharge (DBD) based cylindrical reactor has been realized in the framework of this thesis.
In order to determine the optimal parameters for the plasma jet generation by an AC or pulsed excitation and to ensure maximum exploitation of this latter, we carried out a series of electrical and optical measurements. The effects of the variation of the nature of the excitation signal, the applied voltage amplitude and frequency on the geometry of the jet and the reactive species created in air by this plasma jet were studied.
First, we used our plasma jet created in using argon at atmospheric pressure for the inactivation of Escherichia coli bacterium spread on a solid surface. We have shown that the inactivation capacity of microorganisms by this plasma jet is directly related to the distance jet source – treated surface as well as to the duration of the treatment. The inactivation rate is more significant as the jet source – sample distance is minimal and the treatment duration is high.
Secondly, we treated deionized water contaminated with E-coli bacteria using our plasma jet. We have shown that this treatment allows the creation of ozone, hydrogen peroxide and nitrite. However, the concentrations of these species generated by the plasma jet remain relatively low in order to obtain an effective inactivation of Escherichia coli present in the same amount of deionized water.
These investigations have shown that the composition and the dimensions of the created plasma jet can be controlled by means the nature of the excitation signal, its amplitude and / or its frequency. They have also shown that our plasma jet is more effective for the treatment of solid surfaces than for the treatment of aqueous media.
Diplôme : Doctorat En ligne : ../theses/electronique/BEN7293.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10908 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/7293 BEN/7293 Thèse Bibliothèque principale Thèses Disponible Permalink
Permalink
