Christophe BallifChristophe Ballif is director of the Phototovoltaics and Thin Film Electronics Laboratoryb) (PV-Lab at the institute of microengineering (IMT) in Neuchâtel (part of the EPFL since 2009). The lab focus is on the science and technology of high efficiency heterojunction crystalline cells,so-called passivating contacts for solar cells, multi-junction solar cells include novel generation Perovskite on innovative optical high speed detector and on various macroelectronics application. It also deals with energy management with a focus on integration of solar electricity into the energy system. The PV-Lab has strongly contributed to technology transfer and industrialization of novel devices and full technology with numerous companies. Christophe Ballif graduated as a physicist from the EPFL in 1994, where he also obtained in 1998 his Phd degree working on novel PV materials. He accomplished his postdoctoral research at NREL (Golden, US) on compound semiconductor solar cells (CIGS and CdTe). He worked then at the Fraunhofer ISE (Ge) on crystalline silicon photovoltaics (monocrystalline and multi-crystalline) until 2003 and then at the EMPA in Thun (CH) before becoming full professor at the University of Neuchâtel IMT in 2004, taking over the chair of Prof. A. Shah. Since 2013, C.Ballif is also the director of the new CSEM PV-Center, also located in Neuchâtel. The CSEM PV-Center is focussing more on industrialisation and technology transfer in the field of solar energy, including solar electricity management and storage. At the core of the CSEM PV-center activities lies several "pilot lines" for various kinds of solar cells manufacturing, with a focus coating technologies, wet chemistry processes for crystalline silicon, metalisation techniques for solar cells, and a platform for developing "ideal packaging solutions and polymers" for PV modules. In addition, joined facitilites between CSEM and EPFL of over 800 m2 are available for modules manufacturing, measuring and accelerated aging. CSEM PV-center has also full team dedicated to storage and energy systems and operates a joined center with BFH in Biel for research on electrochemical storage. He (co-) authored over 500 journal and technical papers, as well as several patents. He is an elected member of the SATW, member of the scientific council of the Swiss AEE, and member of the board of the EPFL Energy center. In 2016, he recieved the Becquerel prize for his contributions to the field of high efficiency photovoltaics.
Luc ThévenazDe nationalité suisse et né à Genève, Luc Thévenaz a obtenu en 1982 le diplôme de physicien, mention astrophysique, de l'Université de Genève et le doctorat ès sciences naturelles, mention physique, en 1988 de l'Université de Genève. C'est durant ces années de thèse qu'il a développé son domaine d'excellence, en l'occurrence les fibres optiques et leurs applications. En 1988, Luc Thévenaz a rejoint l'Ecole Polytechnique Fédérale de Lausanne (EPFL), où il dirige actuellement un groupe de recherche en photonique, notamment en optique dans les fibres et dans les capteurs. Ses domaines de recherche couvrent les capteurs à fibre optique basés sur la diffusion Brillouin, l'optique non-linéaire dans les fibres, la lumière lente et rapide et la spectroscopie laser dans les gaz. Ses réalisations principales sont: - l'invention d'une configuration innovante pour les capteurs répartis Brillouin, basée sur l'emploi d'une seule source laser, ce qui lui donne une grande stabilité intrinsèque et qui a permis de réaliser les premières mesures hors laboratoire avec ce type de capteur; - le développement d'un capteur de gaz à l'état de traces, basé sur une détection photoacoustique et utilisant une source laser à semi-conducteur dans le proche infra-rouge, pouvant détecter une concentration du gaz au niveau du ppb; - la première démonstration expérimentale de lumière lente et rapide dans les fibres optiques qui puissent être contrôlées par un autre faisceau lumineux, réalisées à température ambiante et fonctionnant à n'importe quelle longueur d'onde grâce à l'exploitation de la diffusion Brillouin. La première vitesse de groupe négative dans les fibres a aussi été démontrée selon le même principe. En 1991, il a visité l'Université PUC de Rio de Janeiro au Brésil, où il a travaillé sur la génération d'impulsions picoseconde avec des diodes laser. En 1991-1992 il a travaillé à l'Université de Stanford aux USA, où il a participé au développement d'un gyroscope basé sur un laser Brillouin à fibre. Il a rejoint en 1998 l'entreprise Orbisphere Laboratories SA à Neuchâtel en Suisse en tant qu'expert scientifique, avec pour tâche de développer des capteurs de gaz à l'état de traces, basés sur la spectroscopie laser photoacoustique. En 1998 and 1999 il a visité le Korea Advanced Institute of Science and Technology (KAIST) à Daejon en Corée du Sud, où il a travaillé sur des capteurs de courant électrique utilisant un laser à fibre optique. En 2000 il a été un des co-fondateurs de l'entreprise Omnisens SA à Morges en Suisse, qui développe et commercialise de l'instrumentation et des capteurs optiques de pointe. En 2007 il a visité l'Université de Tel Aviv, où il a étudié le contrôle tout-optique de la polarisation de la lumière dans les fibres optiques. Durant l'hiver 2010, il a séjourné à l'Université de Sydney en Australie (CUDOS: Centre for Ultrahigh bandwidth Devices for Optical Systems) où il a étudié les apllications de la diffusion Brillouin stimulée dans les guides d'onde à base de verres chalcogénures. En 2014, il a séjourné à L'Université Polytechnique de Valence en Espagne, où il a travaillé sur les applications photoniques pour les micro-ondes exploitant la diffusion Brillouin stimulée. Il a été membre du Consortium formé pour le projet européen FP7 GOSPEL "Gouverner la vitesse de la lumière", a été Président de l'Action Européenne COST 299 "FIDES: Les fibres optiques pour relever les nouveaux défis de la société de l'information" et est auteur ou co-auteur de quelques 480 publications et 12 brevets. Il est actuellement Coordinateur du projet H2020 Marie Skłodowska-Curie Innovative Training Networks FINESSE (FIbre NErve Systems for Sensing). Il est co-Editeur-en-Chef de la revue "Nature Light: Science & Applications" et Membre du Comité Editorial (Editeur Associé) de la revues suivantes: "APL Photonics" et "Laser & Photonics Reviews". Il a été élevé au rang de "Fellow" par l'IEEE, ainsi que par la Société Optique (OSA).
Fabien Sorin Sep 2002-Oct 2007
Ph.D., Department of Materials Science and Engineering, MIT, USA.
Supervisor: Prof. Yoel Fink; Thesis: Multi-material, Multifunctional Fiber Devices.
After graduating with an engineering degree and a Master of Science in Physics from the Ecole Polytechnique in Palaiseau, France, Prof. Sorin joined the department of Materials Science and Engineering at the Massachusetts Institute of Technology (MIT) in Cambridge, USA for his graduate studies. He worked as a research assistant in the Photonic Bandgap Fibers and Devices Group of Professor Yoel Fink and graduated with a PhD in 2008. His PhD thesis led to the development of a new class of fiber material and devices and he was a pioneer of the field of multi-material fibers.
Mar 2008-Oct 2010
Postdoctoral Associate and Research Scientist, Research Laboratory of Electronics, MIT.
He then joined the Research Laboratory of Electronics at MIT as a Postdoctoral Associate, and continued as a Research Scientist associate, where he conducted independent research in the emerging field of multi-material fibers and was involved and led a variety of projects in fundamental research as well as in collaborations with local start-ups.
Apr 2011 Feb 2013
Research Engineer, Saint-Gobain Recherche, Aubervilliers, France.
Surface du Verre et interface Group
In 2011, prof. Sorin returned to Europe and joined the company Saint-Gobain in the Saint-Gobain Recherche center, its biggest research center located near Paris in France. As a research engineer, he developed a new research thrust investigating new photonic materials and nanostructures for the energy and building industries. In particular, he and colleagues developed innovative processing approaches to deploy photonic nanostructures for light management over large area substrates, for applications in energy harvesting and saving, and for building materials and windows.
Mar 2013 Present
Assistant Professor tenure-track, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
Head of the Photonic materials and fibre devices laboratory (FIMAP)
Since March 2013, he is in the department of Materials Science (IMX) at the Ecole Polytechnique Fédérale de Lausanne (EPFL) as an assistant professor tenure-track. He is starting a research group on photonic materials and fiber devices (FIMAP), continuing on developing innovative materials processing approaches and photonic device architectures to develop new solutions in energy harvesting, saving and storage, in sensing and monitoring, health care and smart fabrics.
Esther AmstadEsther Amstad studied material science at ETH in Zurich. She also carried out her PhD thesis at the same University under the supervision of Prof. Marcus Textor; for her thesis, she worked on the surface modification and steric stabilization of oxide nanoparticles. As a postdoctoral fellow, she joined the experimental condensed soft matter group of David A. Weitz at Harvard University where she used droplet based microfluidics to assemble different types of functional micro- and nanomaterials. In addition, she developped new microfluidic devices that enable the production of very small, airborne drops as well as devices that produce highly monodisperse emulsion drops at a very high throughput. In June 2014, Esther joined the material science department (IMX) of EPFL where she is leading the Soft Materials Laboratory (SMAL).
Xile HuXile Hu was born in 1978 in Putian, southeastern China. He entered the Peking University in Beijing in 1996. Besides learning too little chemistry, his biggest regret in the college was not able to correct his southern accent in Mandarin. After graduated from PKU, he went to the United States and began his doctoral studies at the University of California, San Diego. In December 2004, he finished with a Ph.D. in chemistry and some fond memories of the beautiful city of San Diego. He then moved to the Los Angeles area and become a postdoctoral scholar at the California Institute of Technology. There he enjoyed numerous stimulating scientific (and other) discussions with friends and colleagues. He also made plenty of friends outside the campus and was a frequent in many local Chinese restaurants. In 2007, after two pleasant visits to Switzerland, he decided to move across the continent one more time and join the faculty of the École Polytechnique Fédérale de Lausanne (EPFL). He now directs the Laboratory of Inorganic Synthesis and Catalysis and is interested in developing chemistry for synthesis, energy and sustainability.
Zhaofu Fei1999, Phd in Chemistry, Braunschweig, Germany,
2002, Lausanne, EPFL, Scientist.
Heinrich HofmannOriginaire de Mellingen (AG), Heinrich Hofmann est né en 1953. Après des études d'ingénieur en soudures (Ing. grad.) à Duisburg (D), et d'ingénieur en science des matériaux à la Technische Hochschule de Berlin, il obtient le titre de docteur ingénieur en 1983 pour une thèse dans le domaine des matériaux.De 1983 à 1985, il travaille comme assistant scientifique au Laboratoire de Technologie des Poudres de l'Institut Max Planck pour la science des matériaux à Stuttgart. En 1985 il entre au Centre de Recherche et Développement d'Alusuisse-Lonza à Neuhausen-am-Rheinfall, en tant qu'ingénieur consacré à la recherche dans l'étude et le développement des procédés de synthèse des poudres céramiques.En 1993 il entre à l'EPFL en tant que professeur extraordinaire et directeur du Laboratoire de technologie des poudres du Départmeent des matériaux. Son enseignement porte sur les céramiques I (procédés) et les phénomènes de transfert. Son domaine de recherche couvre la synthèse des poudres minérales, leur caractérisation et la modification des surfaces, ainsi que la mise en forme et le frittage. Ses recherches incluent aussi les matériaux nanostructurés (composites semi-conducteurs et polymères) et la métallurgie des poudres. Hofmann Heinrich, Prof. Dr.-Ing. got his PhD in Material Science with a thesis prepared at the Powder Metallurgy Laboratory at the Max Planck Institute in Stuttgart. In 1985 he joins the R&D center of Alusuisse-Lonza Services AG, at Neuhausen-am-Rheinfall. In 1993 he joins the Swiss Federal Institute of Technology as Professor and Director of the Powder Technology Laboratory at the Department of Materials science and engineering. His research area includes the synthesis of nanostructured materials based on nanoparticles and the modification of surfaces with nanoparticles using colloidal methods. The fields of application of such materials are medical and biological, (drug delivery, hyperthermia, cell separation, biosensors), electronics and sensors.
John BotsisJohn (Ioannis) Botsis obtained his diplôme in civil engineering at the University of Patras, Greece in 1979. He continued his education at Case Institute of Technology in Cleveland Ohio/USA, where he received his MS and Ph.D. in 1984. After two years at the research center for national defense in Athens he was nominated assistant professor at the University of Illinois in Chicago, associate in 1991 and full professor in 1995. In 1996, he was nominated professor of solids and structural mechanics at the EPFL. At EPFL he teaches mechanics of structures and mechanics of continuous media´ at the bachelors level and Fracture mechanics at the masters and doctoral levels. His research covers the mechanics of solids and structures, fracture mechanics and micromechanics of polymers, metals and their composites as well as biomechanics. He is also actively involved in full-filed optical methods for surface strain measurements as well as internal strain measurements using fiber Bragg grating sensors, aimed at characterizing micromechanics of fracture, residual strains and strain distribution in composite laminates for structural monitoring. Funding for his research comes from the Swiss National Science Foundation, State Secretariat for Education and Research and Swiss industry. He retired on February 28, 2020.
