Search

Your search keyword '"Thierry Camps"' showing total 4 results
Start Over Author "Thierry Camps" Publication Year Range Last 3 years
4 results on '"Thierry Camps"'

1. A New Miniaturized Gas Sensor Based on Zener Diode Network Covered by Metal Oxide

Author

Vignesh Gunasekaran, Soffian Yjjou, Eve Hennequin, Thierry Camps, Nicolas Mauran, Lionel Presmanes, and Philippe Menini

Subjects
miniaturized gas sensor network, p-n junction, metal oxide, RF-sputtering, ZnO:Ga thin layer, Mechanical engineering and machinery, TJ1-1570
Abstract

The development of “portable, low cost and low consumption” gas microsensors is one of the strong needs for embedded portable devices in many fields such as public domain. In this paper, a new approach is presented on making, on the same chip, a network of head-to-tail facing PN junctions in order to miniaturize the sensor network and considerably reduce the required power for heating each cell independently. This paper is about recognizing a device that integrates both sensing and self-heating. This first study aims to evaluate the possibilities of this type of diode network for use as a gas sensor. The first part concerns the description of the technological process that is based on a doped polysilicon wafer in which a thin layer of metal oxide (a gallium-doped zinc oxide in our case) is deposited by RF sputtering. An electrical model will be proposed to explain the operation and advantage of this approach. We will show the two types of tests that have been carried out (static and dynamic) as well as the first encouraging results of these electrical characterizations under variable atmospheres.

Published
2021
Full Text
View/download PDF

2. Thermal characterization of a nematic liquid crystal suited for the fabrication of NIR spectrally-tunable vertical cavity surface emitting lasers

Author

Benjamin Boisnard, Andrea Simaz, Julien Lumeau, Pierluigi Debernardi, Thomas Begou, Véronique Bardinal, Benjamin Reig, Alberto Tibaldi, Thierry Camps, Jean Baptiste Doucet, Équipe MICrosystèmes d'Analyse (LAAS-MICA), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Service Techniques et Équipements Appliqués à la Microélectronique (LAAS-TEAM), Institut FRESNEL (FRESNEL), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), RCMO (RCMO), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Department of Electronics and Telecommunications = DET Dipartimento di Elettronica e Telecomunicazioni [Politecnico di Torino] (DET), Politecnico di Torino = Polytechnic of Turin (Polito), Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni (IEIIT), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and ANR-15-CE19-0012,DOCT-VCSEL,Tomographie par Cohérence Optique portable à source accordable MEMS-VCSEL pour l'analyse de la peau(2015)

Subjects
Fabrication, Materials science, business.industry, Laser, Electronic, Optical and Magnetic Materials, Characterization (materials science), law.invention, Liquid crystal, law, Thermal, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, business, [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
Abstract

International audience; In this work, the thermo-optical properties of a nematic liquid crystal are determined through reflectance measurements performed on a high finesse tunable filter fabricated using a polymer-based microcell technology. The final aim is to insert such material in the optical cavity of a 850 nm tunable VCSEL device, in which local self-heating due to CW pumping must be taken into account. These localized interferometric experiments are performed in the near-infra-red range and at temperatures up to 115 °C. A thermal model is derived from the acquired data. Finally, we demonstrate that the birefringence of QYPDLC-36 liquid crystal remains higher than 0.18 at 60 °C, feature well suited to real device operation.

Published
2022

3. A New Miniaturized Gas Sensor Based on Zener Diode Network Covered by Metal Oxide

Author

Eve Hennequin, Thierry Camps, Vignesh Gunasekaran, Soffian Yjjou, Nicolas Mauran, Lionel Presmanes, Philippe Menini, Équipe MICrosystèmes d'Analyse (LAAS-MICA), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Service Instrumentation Conception Caractérisation (LAAS-I2C), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP)

Subjects
Materials science, Oxide, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Article, chemistry.chemical_compound, Sputtering, Hardware_INTEGRATEDCIRCUITS, ZnO:Ga thin layer, TJ1-1570, Wafer, miniaturized gas sensor network, Mechanical engineering and machinery, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Diode, p-n junction, business.industry, [SDE.IE]Environmental Sciences/Environmental Engineering, Mechanical Engineering, metal oxide, 021001 nanoscience & nanotechnology, Chip, 0104 chemical sciences, chemistry, RF-sputtering, Control and Systems Engineering, Optoelectronics, Zener diode, 0210 nano-technology, business, p–n junction, Wireless sensor network
Abstract

International audience; The development of “portable, low cost and low consumption” gas microsensors is one of the strong needs for embedded portable devices in many fields such as public domain. In this paper, a new approach is presented on making, on the same chip, a network of head-to-tail facing PN junctions in order to miniaturize the sensor network and considerably reduce the required power for heating each cell independently. This paper is about recognizing a device that integrates both sensing and self-heating. This first study aims to evaluate the possibilities of this type of diode network for use as a gas sensor. The first part concerns the description of the technological process that is based on a doped polysilicon wafer in which a thin layer of metal oxide (a gallium-doped zinc oxide in our case) is deposited by RF sputtering. An electrical model will be proposed to explain the operation and advantage of this approach. We will show the two types of tests that have been carried out (static and dynamic) as well as the first encouraging results of these electrical characterizations under variable atmospheres.

Published
2021

4. 33 nm wavelength tuning of a 1550 nm VCSEL in CW operation based on the liquid crystal micro-cells technology

Author

Laurent Dupont, Véronique Bardinal, Mehdi Alouini, Jean Baptiste Doucet, Benjamin Boisnard, Sophie Bouchoule, Christophe Levallois, Nicolas Chevalier, Thierry Camps, Karine Tavernier, Cyril Paranthoen, Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), Équipe MICrosystèmes d'Analyse (LAAS-MICA), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Service Techniques et Équipements Appliqués à la Microélectronique (LAAS-TEAM), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Optique (IMT Atlantique - OPT), IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), ANR-14-ASTR-0007,HYPOCAMP,Lasers à cavités verticales accordables hybrides , contrôlées en polarisation et entièrement monolithiques pour la conception systèmes optiques et micro-ondes embarqués et compacts.(2014), ANR-15-CE19-0012,DOCT-VCSEL,Tomographie par Cohérence Optique portable à source accordable MEMS-VCSEL pour l'analyse de la peau(2015), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, and IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique)

Subjects
photodetection, Liquid crystal devices, Materials science, business.industry, Photodetection, semiconductor lasers, VCSEL, Vertical-cavity surface-emitting laser, Semiconductor laser theory, Wavelength, Liquid crystal, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, tunable, liquid crystal devices, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, business
Abstract

International audience; We present CW operation of a tunable InP based Vertical Cavity Surface Emitting Laser, integrating a liquid crystal (LC) micro-cell. In comparison with previous work, a larger 33 nm (vs 23 nm) tuning and stable operation are obtained, according to major improvements presented in this paper.

Published
2021

Catalog

Books, media, physical & digital resources
See catalog results