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Titre : Simulation COMSOL Multi physiques d’un Capteur de Gaz SAW Type de document : texte imprimé Auteurs : Emir Bouarroudj, Auteur ; Fouad Kerrour, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2015 Importance : 70 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Matériaux et systèmes micro et nanoélectroniques sensibilité à l’effet de masse fréquence propre SAW COMSOL Multi physique sensitivity natural frequency acoustic waves COMSOL Multi physics Mass Effect الحساسية والتردد الطبيعي الموجات الصوتية COMSOL تأثير الكتلة Index. décimale : 621 Electronique Résumé : In this work, we concerned a study and simulation of micro-sensor surface acoustic wave SAW using the Comsol multi- physique. A sensor SAW constructed of an interdigité transducer (IDT) engraved on a piezoelectric material and covered by a layer sensitive Polyisobutyléne (PIB). Our contribution has focused on determining the effects of influence parameters on the response of a SAW sensor and its sensitivity to mass effect. A comparative study of the response of the SAW sensor (Δ Diplôme : Magistère En ligne : ../theses/electronique/BOU6713.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9910 Simulation COMSOL Multi physiques d’un Capteur de Gaz SAW [texte imprimé] / Emir Bouarroudj, Auteur ; Fouad Kerrour, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2015 . - 70 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Matériaux et systèmes micro et nanoélectroniques sensibilité à l’effet de masse fréquence propre SAW COMSOL Multi physique sensitivity natural frequency acoustic waves COMSOL Multi physics Mass Effect الحساسية والتردد الطبيعي الموجات الصوتية COMSOL تأثير الكتلة Index. décimale : 621 Electronique Résumé : In this work, we concerned a study and simulation of micro-sensor surface acoustic wave SAW using the Comsol multi- physique. A sensor SAW constructed of an interdigité transducer (IDT) engraved on a piezoelectric material and covered by a layer sensitive Polyisobutyléne (PIB). Our contribution has focused on determining the effects of influence parameters on the response of a SAW sensor and its sensitivity to mass effect. A comparative study of the response of the SAW sensor (Δ Diplôme : Magistère En ligne : ../theses/electronique/BOU6713.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9910 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6713 BOU/6713 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l’étude des décharges plasmas à barrière diélectrique. Type de document : texte imprimé Auteurs : Roukia Abidat, Auteur ; Saïda Rebiai, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 152 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Décharges à barrière diélectrique (DBD) pression atmosphérique SDBD caractéristique électrique Lissajous actionneur écoulement de fluide COMSOL ozone Dielectric barrier discharges (DBD) atmospheric pressure electricalcharacteristic actuator fluid flow تصريف الحاجز العازله ( ) DBDالضغظ الجوي DBDالخاصية الكهربائية ليساجو؛ المَشغل الميكانيكي تدفق السائل COMSOLالأوزون Index. décimale : 621 Electronique Résumé : Dielectric barrier discharges operating at atmospheric pressure are generally filamentary type discharges, but under particular conditions, they can be homogeneous. The present work consists, on the one hand, in developing a one-dimensional numerical fluid model to describe the physic properties (charge densities, electronic temperature, electric fields and electric potential) and the electrical characteristics (discharge current, gas voltage and Lissajous curve) of dielectric barrier (DBD) discharges at atmospheric pressure and ambient temperature. For this, we first developed a model using the commercial software COMSOL Multiphysics, in the case of volume discharges. The study is developed in the case of a volumic DBD powered by a sinusoidal signal, in the case of helium and argon plasmas, considering the effect of some parameters of the device. Subsequently, we developed a second model to describe the behavior of surface dielectric barrier discharges, in order to function as an actuator able of controlling the flow velocity of fluids. Air and helium are taken as a gaseous fluid for this numerical study. Furthermore, we have developed a device for the production of ozone by DBD; the experimental results concern the comparison of this production in the case of two different configurations of the device in the case of oxygen plasmas and carbon dioxide. Diplôme : Doctorat En ligne : ../theses/electronique/ABI7394.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11044 Contribution à l’étude des décharges plasmas à barrière diélectrique. [texte imprimé] / Roukia Abidat, Auteur ; Saïda Rebiai, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 152 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Décharges à barrière diélectrique (DBD) pression atmosphérique SDBD caractéristique électrique Lissajous actionneur écoulement de fluide COMSOL ozone Dielectric barrier discharges (DBD) atmospheric pressure electricalcharacteristic actuator fluid flow تصريف الحاجز العازله ( ) DBDالضغظ الجوي DBDالخاصية الكهربائية ليساجو؛ المَشغل الميكانيكي تدفق السائل COMSOLالأوزون Index. décimale : 621 Electronique Résumé : Dielectric barrier discharges operating at atmospheric pressure are generally filamentary type discharges, but under particular conditions, they can be homogeneous. The present work consists, on the one hand, in developing a one-dimensional numerical fluid model to describe the physic properties (charge densities, electronic temperature, electric fields and electric potential) and the electrical characteristics (discharge current, gas voltage and Lissajous curve) of dielectric barrier (DBD) discharges at atmospheric pressure and ambient temperature. For this, we first developed a model using the commercial software COMSOL Multiphysics, in the case of volume discharges. The study is developed in the case of a volumic DBD powered by a sinusoidal signal, in the case of helium and argon plasmas, considering the effect of some parameters of the device. Subsequently, we developed a second model to describe the behavior of surface dielectric barrier discharges, in order to function as an actuator able of controlling the flow velocity of fluids. Air and helium are taken as a gaseous fluid for this numerical study. Furthermore, we have developed a device for the production of ozone by DBD; the experimental results concern the comparison of this production in the case of two different configurations of the device in the case of oxygen plasmas and carbon dioxide. Diplôme : Doctorat En ligne : ../theses/electronique/ABI7394.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11044 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ABI/7394 ABI/7394 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude et simulation d’un micro capteur de pression avec électronique associée : PFET. Type de document : texte imprimé Auteurs : salah Kemouche, Auteur ; Fouad Kerrour, Directeur de thèse Mention d'édition : 03/03/2020 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 131 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Electronique: Microélectronique et Instrumentation Capteur de pression à effet de champ CMOS-MEMS Modélisation Optimisation Sensibilité COMSOL FET pressure sensor Modeling Optimization Sensibility COMSOL software جهاز استشعار الضغط النمذجة التحسين الحساسية برامج
COMSOLIndex. décimale : 621 Electronique Résumé :
These days, most of the sensors are ‘smart’ in nature. In such sensors, the sensing elements and associated electronics are integrated on the same chip. This work is focusing on the study and simulation of a micro pressure sensor with associated electronics. This new pressure Sensor Field Effect Transistor PSFET shows some significant advantages such as the output signal (voltage or current). Furthermore, the full compatibility with complementary metal oxide semiconductor (CMOS) technology features to evolve to an intelligent sensor. We have begun our work with a bibliographic study on the state of the art of the pressure sensor device and the various methods of manufacturing of this sensor. The core of this study is the modeling and simulation of Pressure Sensor Based on suspended gate MOSFET; we have developed an analytical model describing the behavior of the sensor. We have investigated several membrane shapes and for different dielectric structures of the suspended gate. Finite element method based COMSOL is used to simulate the behavior of the PSFET pressure sensor. The results show that this type of pressure sensors has a non-linear response and high sensitivity with very small dimensions. We have investigated on the influence of the geometric shape of the membrane, dimensions and type of MOSET on the drain current and on the pressure sensitivity. This study allows us to optimize the sensor performance in function to the application for which it is dedicated. The response of the PSFET pressure sensor based on piezoelectric transistor as a function of pressure was determined in the last chapter. This sensor can be used to measure the air overpressure, due to his linear response in a high-pressure range.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/KEM7627.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11463 Etude et simulation d’un micro capteur de pression avec électronique associée : PFET. [texte imprimé] / salah Kemouche, Auteur ; Fouad Kerrour, Directeur de thèse . - 03/03/2020 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 131 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Electronique: Microélectronique et Instrumentation Capteur de pression à effet de champ CMOS-MEMS Modélisation Optimisation Sensibilité COMSOL FET pressure sensor Modeling Optimization Sensibility COMSOL software جهاز استشعار الضغط النمذجة التحسين الحساسية برامج
COMSOLIndex. décimale : 621 Electronique Résumé :
These days, most of the sensors are ‘smart’ in nature. In such sensors, the sensing elements and associated electronics are integrated on the same chip. This work is focusing on the study and simulation of a micro pressure sensor with associated electronics. This new pressure Sensor Field Effect Transistor PSFET shows some significant advantages such as the output signal (voltage or current). Furthermore, the full compatibility with complementary metal oxide semiconductor (CMOS) technology features to evolve to an intelligent sensor. We have begun our work with a bibliographic study on the state of the art of the pressure sensor device and the various methods of manufacturing of this sensor. The core of this study is the modeling and simulation of Pressure Sensor Based on suspended gate MOSFET; we have developed an analytical model describing the behavior of the sensor. We have investigated several membrane shapes and for different dielectric structures of the suspended gate. Finite element method based COMSOL is used to simulate the behavior of the PSFET pressure sensor. The results show that this type of pressure sensors has a non-linear response and high sensitivity with very small dimensions. We have investigated on the influence of the geometric shape of the membrane, dimensions and type of MOSET on the drain current and on the pressure sensitivity. This study allows us to optimize the sensor performance in function to the application for which it is dedicated. The response of the PSFET pressure sensor based on piezoelectric transistor as a function of pressure was determined in the last chapter. This sensor can be used to measure the air overpressure, due to his linear response in a high-pressure range.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/KEM7627.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11463 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KEM/7627 KEM/7627 Thèse Bibliothèque principale Thèses Disponible Etude des Plasmons de surface de nanoparticules métalliques et leurs applications dans le domaine médical. / Chouaib Daoudi
Titre : Etude des Plasmons de surface de nanoparticules métalliques et leurs applications dans le domaine médical. Type de document : texte imprimé Auteurs : Chouaib Daoudi, Auteur ; Mohamed Remram, Directeur de thèse ; Anne-Marie Jurdyc, Directeur de thèse Mention d'édition : 14-sept-20 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 148 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Electronique: Systèmes, procédés et dispositifs pour l’électronique médicale Résonance de Plasmon de surface RPSL nanoparticules métalliques absorption effet photothermique réduction chimique méthode de Turkevich microémulsion modélisation MEF COMSOL Surface Plasmon resonance LSPR metallic nanoparticles photothermal effect chemical
reduction Turkevich method microemulsion modeling FEM رنین البلازمون السطحي الموضعي ر.ب.س.م الجسیمات النانوية الامتصاص التأثیر ضوحراري الاختزال الكیمیائي طريقة توركفیتش مستحلب دقیق، النمذجة الحاسوبیة ط.ع.م كومسولIndex. décimale : 621 Electronique Résumé : Advances in nanotechnology have recently led to the emergence of a completely new field of independent research, including plasmonics, which deals with the optical generation, manipulation and controlled transmission of localized or propagated plasmonic excitations in metal nanostructures interacting with light. These interesting characteristics have paved the way for exploiting the effects of surface plasmons in the photothermal therapy of cancer cells, photocatalytic reactions as well as in the surface-enhanced Raman spectroscopy. In this contribution, we are interested in the study of the localized surface plasmon resonance of metallic nanoparticles. In particular, the impact of various parameters such as the size, shape and environment surrounding nanoparticles on their optical response and thermal effect. We first became interested in calculating absorption and scattering according to these factors, in order to determine the best geometrical parameters (shape and size) for the good thermal characteristic. Then, we calculated numerically the spatiotemporal evolution of the temperature profile inside and around the gold nanoparticles using COMSOL multiphysics that based on the finite element method. Various parameters such as laser fluence and pulse duration on the temperature variation of these nanoparticles were examined. The results revealed that the temperature reached at the particle/water interface in the case of gold nanoshell is much higher than that obtained for other shapes. In particular, the case of nanoshell with Barium titanate (BaTiO3) core. Finally, we applied these nanoshells to a skin tumor, where the results showed that a large part of the tumor was damaged using a small concentration of nanoparticles with low laser intensity. In second time, we synthesized nanoparticles with small dimensions <100nm consisting of a silica core (SiO2) and a gold shell using two different methods. The first gave us a homogeneous gold shell, while the second allowed us to prepare a new type of nanoparticles in the form of raspberry. We investigated the size effect of silica particles, the concentration effect of gold nanoparticles and the effect of the degree of gold coverage on the morphology and optical properties of nanoshells. These studies revealed that the synthesized gold nanoshells are characterized by a broadened and exalted absorption extending to near-infrared region. These properties resulting from the inter-particles coupling due to the short distances between them, creating many hot spots between these nanoparticles, and that what has been demonstrated by numerical simulation. Finally, the results presented in this study can be used, we hope, for the synthesis of nanoparticles adapted to medical and biological applications.
Note de contenu : Annexes.
Diplôme : Doctorat En ligne : ../theses/electronique/DAO7649.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11483 Etude des Plasmons de surface de nanoparticules métalliques et leurs applications dans le domaine médical. [texte imprimé] / Chouaib Daoudi, Auteur ; Mohamed Remram, Directeur de thèse ; Anne-Marie Jurdyc, Directeur de thèse . - 14-sept-20 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 148 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Electronique: Systèmes, procédés et dispositifs pour l’électronique médicale Résonance de Plasmon de surface RPSL nanoparticules métalliques absorption effet photothermique réduction chimique méthode de Turkevich microémulsion modélisation MEF COMSOL Surface Plasmon resonance LSPR metallic nanoparticles photothermal effect chemical
reduction Turkevich method microemulsion modeling FEM رنین البلازمون السطحي الموضعي ر.ب.س.م الجسیمات النانوية الامتصاص التأثیر ضوحراري الاختزال الكیمیائي طريقة توركفیتش مستحلب دقیق، النمذجة الحاسوبیة ط.ع.م كومسولIndex. décimale : 621 Electronique Résumé : Advances in nanotechnology have recently led to the emergence of a completely new field of independent research, including plasmonics, which deals with the optical generation, manipulation and controlled transmission of localized or propagated plasmonic excitations in metal nanostructures interacting with light. These interesting characteristics have paved the way for exploiting the effects of surface plasmons in the photothermal therapy of cancer cells, photocatalytic reactions as well as in the surface-enhanced Raman spectroscopy. In this contribution, we are interested in the study of the localized surface plasmon resonance of metallic nanoparticles. In particular, the impact of various parameters such as the size, shape and environment surrounding nanoparticles on their optical response and thermal effect. We first became interested in calculating absorption and scattering according to these factors, in order to determine the best geometrical parameters (shape and size) for the good thermal characteristic. Then, we calculated numerically the spatiotemporal evolution of the temperature profile inside and around the gold nanoparticles using COMSOL multiphysics that based on the finite element method. Various parameters such as laser fluence and pulse duration on the temperature variation of these nanoparticles were examined. The results revealed that the temperature reached at the particle/water interface in the case of gold nanoshell is much higher than that obtained for other shapes. In particular, the case of nanoshell with Barium titanate (BaTiO3) core. Finally, we applied these nanoshells to a skin tumor, where the results showed that a large part of the tumor was damaged using a small concentration of nanoparticles with low laser intensity. In second time, we synthesized nanoparticles with small dimensions <100nm consisting of a silica core (SiO2) and a gold shell using two different methods. The first gave us a homogeneous gold shell, while the second allowed us to prepare a new type of nanoparticles in the form of raspberry. We investigated the size effect of silica particles, the concentration effect of gold nanoparticles and the effect of the degree of gold coverage on the morphology and optical properties of nanoshells. These studies revealed that the synthesized gold nanoshells are characterized by a broadened and exalted absorption extending to near-infrared region. These properties resulting from the inter-particles coupling due to the short distances between them, creating many hot spots between these nanoparticles, and that what has been demonstrated by numerical simulation. Finally, the results presented in this study can be used, we hope, for the synthesis of nanoparticles adapted to medical and biological applications.
Note de contenu : Annexes.
Diplôme : Doctorat En ligne : ../theses/electronique/DAO7649.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11483 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DAO/7649 DAO/7649 Thèse Bibliothèque principale Thèses Disponible
Titre : Modèle fluide d’une décharge plasma radiofréquence Type de document : texte imprimé Auteurs : Hanene Bahouh, Auteur ; Saida Benahmed-Rebiai, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 163 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Décharge Plasma RF décharge capacitive (CCP) décharge inductive (ICP) Plasma
monoatomique Modèle fluide COMSOL densité de charge température électronique Radiofrequency plasma capacitive discharge (CCP) inductive discharge (ICP) monatomic plasma Fluid model charge density electron temperature نموذج مائع بلازما جسيمات مشحونة ترددات راديويةIndex. décimale : 621 Electronique Résumé : "The aim of the present work is to develop a numerical model which permits a multidimensional simulation of the distribution of the different charged particles and neutral species, potential and electric field, electronic temperature and reaction rates in radiofrequency discharges, for electropositive plasma produced in a capacitively coupled reactor (CCP) and in an inductively coupled reactor (ICP), respectively. For this, and after
applying some simplifying assumptions and boundary and initial conditions, we developed a fluid self - consistent model to describe the behaviour of various plasma parameters. The model developed is based on the resolution of the first three moments of the Boltzmann equation. These three moments, which are the continuity equation, the transfer of momentum equation and electron mean energy’s equation, are coupled to the Poisson equation and the
Maxwell equations to form a non-linear and strongly coupled system of equations. We therefore process for its resolution using Comsol Multiphysics commercial software which is based on the finite element method. The analysis of the influence of operating parameters such as pressure and RF frequency and power on the plasma characteristics is also considered in this study.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BAH6544.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9659 Modèle fluide d’une décharge plasma radiofréquence [texte imprimé] / Hanene Bahouh, Auteur ; Saida Benahmed-Rebiai, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2014 . - 163 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Décharge Plasma RF décharge capacitive (CCP) décharge inductive (ICP) Plasma
monoatomique Modèle fluide COMSOL densité de charge température électronique Radiofrequency plasma capacitive discharge (CCP) inductive discharge (ICP) monatomic plasma Fluid model charge density electron temperature نموذج مائع بلازما جسيمات مشحونة ترددات راديويةIndex. décimale : 621 Electronique Résumé : "The aim of the present work is to develop a numerical model which permits a multidimensional simulation of the distribution of the different charged particles and neutral species, potential and electric field, electronic temperature and reaction rates in radiofrequency discharges, for electropositive plasma produced in a capacitively coupled reactor (CCP) and in an inductively coupled reactor (ICP), respectively. For this, and after
applying some simplifying assumptions and boundary and initial conditions, we developed a fluid self - consistent model to describe the behaviour of various plasma parameters. The model developed is based on the resolution of the first three moments of the Boltzmann equation. These three moments, which are the continuity equation, the transfer of momentum equation and electron mean energy’s equation, are coupled to the Poisson equation and the
Maxwell equations to form a non-linear and strongly coupled system of equations. We therefore process for its resolution using Comsol Multiphysics commercial software which is based on the finite element method. The analysis of the influence of operating parameters such as pressure and RF frequency and power on the plasma characteristics is also considered in this study.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BAH6544.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9659 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BAH/6544 BAH/6544 Thèse Bibliothèque principale Thèses Disponible Permalink
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