La Chaux-de-Fonds, Switzerland
La Chaux-de-Fonds, Switzerland

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Grant
Agency: European Commission | Branch: H2020 | Program: ECSEL-IA | Phase: ECSEL-02-2014 | Award Amount: 48.05M | Year: 2015

The goal of the InForMed project is to establish an integrated pilot line for medical devices. The pilot line includes micro-fabrication, assembly and even the fabrication of smart catheters. The heart of this chain is the micro-fabrication and assembly facility of Philips Innovation Services, which will be qualified for small/medium-scale production of medical devices. The pilot facility will be open to other users for pilot production and product validation. It is the aim of the pilot line: to safeguard and consolidate Europes strong position in traditional medical diagnostic equipment, to enable emerging markets - especially in smart minimally invasive instruments and point-of-care diagnostic equipment - and to stimulate the development of entirely new markets, by providing an industrial micro-fabrication and assembly facility where new materials can be processed and assembled. The pilot line will be integrated in a complete innovation value chain from technology concept to high-volume production and system qualification. Protocols will be developed to ensure an efficient technology transfer between the different links in the value chain. Six challenging demonstrators products will be realized that address societal challenges in: Hospital and Heuristic Care and Home care and well-being, and demonstrate the trend towards Smart Health solutions.


Grant
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: NMP-2009-1.1-1 | Award Amount: 5.00M | Year: 2010

The main goal of the project PARYLENS is to develop the next generation optical devices, based on an innovative and reliable concept inspired by natural optical systems such as the human and the fly eyes. We propose the following devices to the European citizen and industry: 1) tuneable lenses 2) truly accommodative intraocular lenses 3) bistable flexible displays The development of those devices relies on recent advances in nanotechnology combined with the patented SOLID (Solid On Liquid deposition) process, which offers the possibility to grow a stable solid layer directly onto a liquid, such that the solid uniformly replicates and encapsulates the liquid template. When using the polymer Parylene as solid layer, the resulting interface is perfectly smooth and the liquid template remains unaffected, which is ideal for optical applications. Parylene is stable, biocompatible, highly transparent, and can be deposited in a one-step process also on liquids. PARYLENS proposes to develop low cost yet high quality, reliable smart devices. The actuation of the tuneable lenses will rely on Parylene-based electroactive polymers and liquid crystals. Tuneable lenses are expected to have an impact on the consumer electronics market (mobile phones, cameras, etc) in addition, the development of low actuation voltages tuneable lenses will profit to the biomedical devices market (artificial eyes, endoscopes, etc). The truly accommodative intraocular lenses will closely mimic the structure and shape of the crystalline lens of the human eye. They will also prevent inflammation and infections. The structure of microlens arrays will be used to develop flexible bistable liquid crystals displays. The consortium is well balanced (12 partners from 8 countries) and goes for full complementarity. It comprises 4 SMEs, 3 universities and 4 research centres. Together they will make this ambitious multidisciplinary project a reality.


Mazingue T.,University of Savoy | Lomello-Tafin M.,University of Savoy | Hernandez-Rodriguez C.,University of Savoy | Passard M.,University of Savoy | And 12 more authors.
Sensors and Actuators, B: Chemical | Year: 2016

This article addresses the main results of the PEPS (PEllet Photonic Sensor) project, whcich aims at developing a new gas sensing transducer via a technological breakthrough: the combination of photonics (insensitive to external electromagnetic disturbances) and catalysis (reversibility, limited energy consumption). Indeed, catalytic reactions are often exothermic and this heat can modify the properties of optical devices. The experimental studies performed during the PEPS project highlighted the rapid and reversible response at room temperature of catalytic powders towards different concentrations of H2 in air. The thermal and optical properties of the materials used for the integrated photonic component have also been studied. These results have been exploited for the design of the photonic transducers. The feasibility of the physical transduction principle has been demonstrated by developing different prototypes based on Bragg gratings and Multimode Interference Components. © 2015 Elsevier B.V.


Galeotti F.,CNR Institute for Macromolecular Studies | Andicsova A.,CNR Institute for Macromolecular Studies | Andicsova A.,Slovak Academy of Sciences | Bertini F.,CNR Institute for Macromolecular Studies | And 8 more authors.
Journal of Materials Science | Year: 2014

The application of poly(p-xylylene)s as barrier and passivation layer is limited by the high tensile modulus of this class of materials. In this view, we propose a modified chemical vapor deposition approach to realize a series of copolymers based on parylene C, where linear alkyl chains partially replace the chlorides substituents. Thanks to the efficacious inclusion of bulky alkyl chains into the parylene layer, these modified materials show clear differences in both thermal and mechanical properties with respect to pristine parylene C. In particular, by following this approach, a decrease of the Young's modulus up to 0.3 GPa (13 times reduction of parylene C modulus) is observed, indicating a neat enhancement of the elastic behavior. Besides the improved mechanical performance, the modified materials retain both barrier and biocompatibility properties typical of neat parylene C. The results presented support copolymerization as a valuable approach for tuning parylene properties, which enlarges further the field of application of this excellent multipurpose material. © 2014 Springer Science+Business Media New York.


Charmet J.,University of Applied Sciences and Arts Western Switzerland | Banakh O.,University of Applied Sciences and Arts Western Switzerland | Laux E.,University of Applied Sciences and Arts Western Switzerland | Graf B.,University of Applied Sciences and Arts Western Switzerland | And 13 more authors.
Thin Solid Films | Year: 2010

A process for the deposition of a solid layer onto a liquid is presented. The polymer poly-di-chloro-para-xylylene, also known as Parylene C, was grown on low vapour pressure liquids using the conventional low pressure chemical vapour deposition process. A reactor was built and a process developed to enable the deposition of Parylene C at atmospheric pressure over high vapour pressure liquids. It was used to deposit Parylene C over water among others. In all cases Parylene C encapsulated the liquid without influencing its initial shape. The results presented here show also that the Parylene C properties are not affected by its growth on liquid templates and the roughness of the Parylene C surface in contact with the liquid during the deposition is extremely low. © 2010 Elsevier B.V.


Kahouli A.,Joseph Fourier University | Kahouli A.,Laboratory for Materials | Sylvestre A.,Laboratory for Materials | Laithier J.-F.,Comelec SA
Journal of Applied Physics | Year: 2013

The increase in the hydrophobicity at the same time as the reduction in the dielectric properties of an insulating material are the main factors necessary to improve the signal response of the electrowetting-on-dielectric and the organic field effect transistor electronic devices. Oxygen (O2) and fluorine (CF4) plasma treatments on 3.7 μm thicknesses-parylene C were carried out to understand the surface hydrophobicity character and their effect on the dielectric properties of the material. Fast hydrophobic recovery was observable during the first day after the O2 treatment due to the reorientation of the polar polymer end chains to the bulk of parylene C. CF4 plasma treatments reveal a noticeably increase of the hydrophobicity as the treatment time increases. Energy dispersive X-ray and Fourier transform infrared analyses have confirmed an increase in the number of fluorine containing CFx bonds where 1 ≤ x ≤ 3 after fluorine plasma treatments and after aging. The PPX C film treated with CF4 plasma at 500 W for 30 min indicated the best hydrophobic character and the best dielectric properties due to the highest loading fluorine content in our experimental conditions. © 2013 AIP Publishing LLC.


Kahouli A.,Joseph Fourier University | Kahouli A.,Tunis el Manar University | Sylvestre A.,Joseph Fourier University | Laithier J.-F.,Comelec SA | And 5 more authors.
Journal of Physics D: Applied Physics | Year: 2012

Plasma treatment of parylene-C surfaces not only causes structural modification of the surface during the plasma exposure, but also leaves active sites on the surfaces, which decreases the dielectric properties. In this work, the effects of oxygen, argon/hydrogen and fluorine plasma treatment on the surface and dielectric properties of parylene-C thin films were investigated using Fourier transform-IR spectroscopy, energy dispersive x-ray analysis and dielectric spectroscopy measurement. The results showed that the plasma treatment successfully introduced fluorine functional groups and decreased the oxygen content on the parylene-C surfaces. It appears that the replacement of oxygen and hydrogen by fluorine atoms led to a decrease in the local orientational polarizability of parylene-C. Consequently, it was found that the atmospheric fluorine plasma-treated parylene-C possessed lower dielectric characteristics, 16% lower than the untreated parylene-C at industrial frequencies (10-10 4Hz). The Ar/H 2 plasma treatment is also an experimental means to reduce the dielectric properties and to decrease the oxygen content in parylene-C. In contrast, the oxygen plasma increases the dielectric constant and can cause deterioration of the leakage current associated with carbon depletion showing C-O and C=O formation. CF 4 and Ar/H 2 plasma treatment does not significantly affect the long molecular motion (-relaxation). Additional extrinsic oxygen content due to O 2 plasma treatment in the parylene-C structure reproduces the increase in the time constant of both the short (β-relaxation) and long molecular motion. © 2012 IOP Publishing Ltd.


Kahouli A.,Joseph Fourier University | Kahouli A.,Tunis el Manar University | Sylvestre A.,Tunis el Manar University | Pairis S.,CNRS Neel Institute | Laithier J.-F.,Comelec SA
Polymer (United Kingdom) | Year: 2012

A basic understanding of the structure-property relations and how they are influenced by the molecular architecture is imperative for the future development of polymer thin films in a large number of applications including those in the electronics industry. A new study has been illustrated in this work to demonstrate the effect of an aromatic Chlorine-Hydrogen substitution on the structural and dielectric properties of poly-para-xylylene (parylene N) ((-CH 2-C 6H 6-CH 2-) n). X-Ray Diffraction (XRD) analysis reveals that the chlorination of the aromatic rings of poly-para-xylylene stabilize the crystalline structure of the materials (α-monoclinic), increases the d-spacing, decreases the crystallinity, and increases the value of the dielectric parameters. Furthermore, the permittivity is increased from 2.68 (PPX N) to 3.1 (PPX C) and the conductivity is increased by two order of magnitude at room temperature at frequency 1 KHz. Fourier Transformation Infrared Spectrometer (FTIR) and Energy Dispersion X-ray (EDX) analyses shows that the different as deposited parylene type are deprived of extrinsic polar bonds who can influenced on the dielectric properties. The increase of the dielectric properties and the changes of the morphologies structure are associated to the change in the intermolecular interaction due to the Cl H aromatic substitution of poly-p-xylylene. © 2011 Elsevier Ltd. All rights reserved.


Kahouli A.,Joseph Fourier University | Kahouli A.,Tunis el Manar University | Sylvestre A.,Joseph Fourier University | Laithier J.-F.,Comelec SA | And 4 more authors.
Materials Chemistry and Physics | Year: 2014

58% semi-crystalline thin parylene-VT4 (-H2C-C6F 4-CH2-)n films, have been investigated by dielectric spectroscopy for temperature and frequency ranges of [-120 to 380 C] and [0.1-105 Hz] respectively. The study comprises a detailed investigation of the dielectric constant, dielectric loss and AC conductivity of this fluoropolymer. Dielectric behavior of parylene-VT4 is represented by a low dielectric constant with values in the range of 2.05-2.35 while the dielectric losses indicate the presence of two relaxation processes. Maxwell-Wagner-Sillars (MWS) polarization at the amorphous/crystalline interfaces with activation energy of 1.6 eV is due to the oligomer orientation. Electrical conductivity obeys to the well-known Jonscher law. The plateau in the low frequency part of this conductivity is temperature-dependent and follows an Arrhenius behavior with activation energy of 1.17 eV (deep traps) due to the fluorine diffusion. Due to its thermal stability with a high decomposition temperature (around 400 C under air and 510 C under nitrogen) and due to its good resistivity at low frequency (1015-1017 Ω m-1), parylene-VT4 constitutes a very attractive polymer for microelectronic applications as low k dielectric. Moreover, when parylene-VT4 is subjected to an annealing, the dielectric properties can be still more improved. © 2013 Elsevier B.V. All rights reserved.

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