Gregory TORTISSIER, Dr.

 limms_tortissier.jpg Host Laboratory TOSHIYOSHI LAB.
Position in LIMMS JSPS Post doctoral fellow (from 2008)
Main  Research Topic in LIMMS Advanced MEMS - Large area MEMS on flexible film

 

Contact LIMMS/CNRS-IIS (UMI 2820)
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komba, Meguro-ku, Tokyo 153-8505, Japan
Phone:+81 (0)3 5452 6036 / Fax:+81 (0)3 5452 6088
E-mail gregory at iis.u-tokyo.ac.jp
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Resume

Grégory Tortissier was born in 1982 in Enghien, France. He obtained the ENSCPB (Graduate School of Chemistry and Physics of Bordeaux) engineering degree and Master in material science in 2006 from Bordeaux University, France. He obtained his PhD degree in microelectronics at the Integration of Material to System (IMS) laboratory (formerly IXL) in 2009 and worked on the field of surface acoustic wave sensors for gas detection in high temperature environment. He is actually pursuing a post doctoral fellowship on flexible large area MEMS in the Hiroshi TOSHIYOSHI Laboratory, the University of Tokyo, Japan, to develop MEMS actuated flexible display.

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Main Publications and Conferences List (before LIMMS)

  • G. Tortissier, L. Blanc, A. Tetelin, J-L. Lachaud, M. Benoit, V. Conedera, C. Dejous, D. Rebiere; “Langasite based Surface Acoustic Wave Sensors for High Temperature Chemical Detection in Harsh Environment: Design of the Transducers and Packaging“, accepted in Sensors & Actuators B Chemical, doi:10.1016/j.snb.2011.01.071 (2011).
  • L. Blanc, A. Tetelin, G. Tortissier, C. Boissière, J-L. Lachaud, C. Dejous, D. Rebiere; “Investigation of Nanostructured Porous TiO2 and SiO2 Thin Films as High Specific Surface Area Coatings for High Sensitivity VOC Love Wave (Guided SH-SAW) Sensors“, 12th International Meeting on Chemical Sensors, Perth, Australia (2010).
  • L. Blanc, A. Tetelin, G. Tortissier, C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Caractérisation d’oxyde de titane mésoporeux par ondes de love“, Colloque Interdiciplinaire en Instrumentation, Le Mans, France (2010).
  • L. Blanc, G. Tortissier, A. Tetelin, Lachaud. J-L., C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Young modulus characterisation of mesoporous titania films using love wave sensors“, IEEE International Ultrasonics Symposium, Roma, Italy (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, J-L. Lachaud, V. Conedera, C. Dejous, D. Rebiere, “Langasite Based Surface Acoustic Wave Sensors for High Temperature Detection in Harsh Environment”, Eurosensors XXIII, Lausanne, Switzerland (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, J-L Lachaud, C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Versatile Mesoporous sensitive films for Love wave devices: gas and humidity detections”, European Material Research Society, Strasbourg, France (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, J. Pistre, J-L. Lachaud, C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Mesoporous Thin Films as Versatile Sensitive Matrices on Love Wave Sensors for fast sub-ppm Vapor Detection”, 15thTransducers Conference, Denver, USA (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, J-L. Lachaud, C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Mesoporous Thin Films as Multipurpose Sensitive Layer for Love Wave Devices: Applications to Volatile Organic Compounds Detection”, 215th Electrochemical Society Meeting, San Francisco, USA (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, C. Zimmermann, J-L. Lachaud, C. Boissiere, C. Sanchez, C. Dejous, D. Rebiere; “Mesoporous Coated Films on Love Wave Acoustic Devices for Gas Detection”, Sensor Letters (2009).
  • G. Tortissier, L. Blanc, A. Tetelin, C. Zimmermann, J. L. Lachaud, C. Boissière, C. Dejous, D. Rebière; ”Dépôts par capillarité de films mésoporeux sur dispositifs à ondes acoustiques : application à la détection de composés organiques volatils”, Matériaux Appliqués aux Dispositifs Capteurs, Rabat, Maroc (2008).

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Research Projects in Limms

1- Large area MEMS on flexible film

 

Context : Recent market trend reports escalating interests of customers for portable devices and most particularly in display and entertainment field. In this context, new flexible devices intend to replace traditional publication media, such as papers and books, by using flexible polymer substrate gathering small size, light weight, low consumption and high integration capabilities. In this framework, we try to develop a flexible MEMS based on the Fabry-Perot interferometer. This device consists in a multilayer stack with flexible polyethylene naphtalate (PEN) substrate, reflective metal electrodes (deposited by evaporation or sputter process) and transparent dielectric layer (sputter). The electric actuation lead to the bending of the flexible assembly, thus changing the optical interferences. By controlling the thickness of each layer, we control the ouptut pixel color.

 Results : Three primary color pixels have been obtained by photolithography [1] and Roll-to-Roll printing [2] with satisfying color purity (CIE 1931 chromaticity diagram red: x=0.52, y=0.36; blue: x=0.13, y=0.20; green: x=0.25, y=0.57) and transmittance (75-80%). Current work focuses on replacing these patterning technologies by inkjet printing which is faster and use only pL drop volume. To improve patterns quality and resolution, interfaces surface tension adjustments are needed by using Reactive Ion Etching plasmas. Moreover, Finite Element Modeling “Comsol Multiphysics” software also enables the structure optimization by tuning spacers shape and thickness in order to obtain a homogeneous pixel color and low voltage actuation.

 References :

[1] Y. Taii, A. Higo, H. Fujita and H. Toshiyoshi, “Transparent color pixels using plastic MEMS technology for electronic papers”, IEICE Electronics Express, Vol.3, No.6, pp 97-101, 2006.
[2] C. Lo, J. Hiitola-Keinänen, O. Huttunen, J. Petäjä, J. Hast, A. Maaninen, H. Kopola, H. Fujita and H. Toshiyoshi, “Novel roll-to-roll lift-off patterned active-matrix display on flexible polymer substrate”, Microelectronic Engineering 86, pp 979–983, 2009.

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Main Publications and Conferences List (in LIMMS)

  • G. Tortissier, P. Ginet, L. Jalabert, B. Daunay, P. Lambert, B. Kim, H. Fujita, H. Toshiyoshi, “CF4 Plasma Surface Treatment Optimized Inkjet Printed Color Pixel Flexible Display“, J. Micromech. Microeng. 21 105021(2011).
  • G. Tortissier, P. Ginet, L. Jalabert, B. Kim, H. Fujita, H. Toshiyoshi; “Inkjet printed optical color filter for flexible display applications“, IEEJ, Tokyo, Japan (2011).
  • G. Tortissier, P. Ginet, B. Kim, H. Fujita, H. Toshiyoshi; “Enhanced CF4 Plasma Treated Polymer Film for Flexible Display Application“, Optical MEMS and Nanophotonics, Istanbul, Turkey (2011).
  • G. Tortissier, H. Fujita, H. Toshiyoshi; “Color Filter MEMS Flexible Display“, International Conference on Materials for Advanced Technologies , Singapore (2011).
  • G. Tortissier, C. Lo, H. Fujita, H. Toshiyoshi; “Flexible MEMS Actuated Display System and Modeling Optimization“, Comsol Conference, Tokyo, Japan (2010).
  • G. Tortissier, C. Lo, H. Fujita, H. Toshiyoshi; “Flexible Display System Based on MEMS Fabry-Perot Interferometer“, Optical MEMS and Nanophotonics, Sapporo, Japan (2010).

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