Marc Jobin

Marc Jobin
University of Applied Sciences of Western Switzerland, hepia, Genève, SWITZERLAND · inSTI

PhD

About

31
Publications
2,002
Reads
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689
Citations
Citations since 2017
1 Research Item
187 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
Additional affiliations
April 2002 - September 2004
École Polytechnique Fédérale de Lausanne
Position
  • Scientific collaborator
Description
  • Development of a force feedback nanomanipulator coupled to an atomic force microscope
May 1994 - December 1995
University of Geneva
Position
  • PhD
Description
  • Development of a Scanning Near-field Optical Microscope
June 1990 - May 1994
University of Geneva
Position
  • PhD Student
Description
  • Surface properties of titanium as a biomaterial

Publications

Publications (31)
Conference Paper
We investigate the effect of the incorporation of CdSe quantum dots (QD) in the standard ITO/TPD/Alq3/Al organic light emitting diodes (OLED's). The OLED's structures have been prepared in a double glove box coupled to a vacuum chamber containing both low and high temperature evaporators. For the standard (undoped) OLED's, the hole transport layer...
Article
An innovative deposition system has been developed to construct complex material thin films from single-element precursors by Chemical Beam Vapour Deposition (CBVD). It relies on well distributed punctual sources that emit individually controlled precursor beams towards the substrate under high vacuum conditions combined with well designed cryo-pan...
Conference Paper
Full-text available
We report on the power conversion efficiency (PCE) enhancement for organic solar cells (OSCs) based on several approaches. A standard cell composed of an indium tin oxide (ITO) anode, P3HT/ PCBM active layer, PEDOT:PSS hole transport layer and an aluminum cathode is used as a reference. We investigate the effects of the following three modification...
Article
Full-text available
We have investigated the effect of adding CdSe quantum dots (QDs) with their hexadecylamine (HDA) ligands coating in ITO/SPT/P3HT:PCBM/Al bulk heterojunction (BHJ) organic photovoltaic cells (OPV). At first, we found that the optimal thermal treatment was a post cathode deposition annealing, due to an effective surface area 10.8% larger compared to...
Article
Full-text available
Combinatorial CBVD (Chemical Beam Vapor Deposition) is a thin film deposition technology which has the ability to produce multi-element thin films with large controlled composition spread gradients. If functional characterizations can be carried out systematically and rapidly on such graded films over full wafers, they enable to identify precisely...
Article
Bars of Y-TZP ceramic for dental restorations were subjected to hydrothermal degradation via in vitro exposure to water steam at 140°C for 7 days. X-ray diffraction, atomic force microscopy and scanning electron microscopy techniques were applied to observe and quantify the tetragonal-monoclinic (t-m) phase transformation associated with the proces...
Article
Full-text available
We have made a Phase Shift Mode Interferometric Optical Microscope (PSM-IOM) operating in liquid and in real time (video rate). We thus implemented for IOM two of the widely accepted basic advantages of Digital Holography Microscopy. Using a modified Tolansky objective to compensate the phase shift from the liquid cell window, we can measure withou...
Article
We have made an interference optical microscope (IOM) capable of improved resolutions, both vertically and laterally. Atomic steps of graphite have been imaged in phase shift mode (PSM) at large field of view through a proper averaging time during acquisition. We discuss the influence of the illumination and the CCD resolution on the ultimate achie...
Article
While new materials with tailored properties appear every day, the need of appropriate characterization tools is still an important concern. Analyses of thin films on thick substrate are often highly influenced by the substrate properties. A dynamical nanoindentation system has been designed and built through the integration of a nanoindenter head...
Article
Full-text available
We have measured the mechanical deformation of a 500nm thick Si 3 N 4 membrane under normal loads between 10uN and 5mN. The loads were applied with a nanoindentor whose tip location onto the membrane surface can be positioned within 5 um. The deformation was measured at nanometer vertical resolution with a home-made interferometric microscope. Defo...
Chapter
Full-text available
Interferometric optical microscopes (IOM) are very powerful 3D metrology tools which use integrated interferometers inside optical objectives. In Phase Shift Mode (PSM) [1], they can reach subnanometer vertical resolution but the lateral resolution, as any far-field optical system, is limited by diffraction to typically 0.5 um. They have a widespre...
Article
Full-text available
We present a systematic investigation of the use of LED as light sources for interference microscopy, in comparison with more standard halogen illumination. For translation height mode (also known as vertical scanning or low coherence microscopy), five white LED-based illuminations setup have been tested, including the use of filters to remove the...
Article
We have made a Dynamic Nanoindentation Microscope (DNM) setup based on sample modulation, in order to allow a direct comparison between various dynamical mechanical measurement techniques such as Force Modulation Microscopy (FMM) and Dynamic Mechanical Analysis (DMA). The microscope is integrated to a standard Atomic Force Microscope (AFM) and uses...
Article
Full-text available
of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2006
Article
Full-text available
We show the integration of a home-made interference optical microscope (IOM) with an Atomic force microscope, as well as the combination of IOM with a nanoindentor. Such combined instruments have many applications in the characterisation of MEMS/NEMS. As an illustrative example, we have used a MEMS accelerometer with capacitive read-out. Surface to...
Article
Full-text available
A nanoscale manipulation system has been designed and built through the integration of a force-feedback haptic device and a commercial atomic force microscope. The force-feedback interaction provides a very intuitive, efficient and reliable way for quick manipulation of nanoscale objects. Unlike other nanomanipulators, ours allows the user to feel...
Article
Full-text available
A white light interference optical profiler (WL-IOP) operating in the vertical scanning interferometry (VSI) mode has been home-made developed and integrated into a commercial Atomic Force Microscope (AFM). The result is a 3D metrological tool operating with sub-nanometer resolution vertically over a wide range laterally: from 1mm down to 10nm. Thi...
Article
An ion-milling-based sample preparation is described, which reveals the morphology of nanocrystalline hard coatings. The method has been successfully used for columnar TiAlN and nanocomposite TiAlSiN single layers, as well as for TiAlN/TiAlSiN multilayer films. Atomic force microscopy (AFM) images of cross-sectioned samples prepared with our method...
Article
Full-text available
A description of the instrumental requirements for AFM-based nanomanipulation system is presented, as well as the design, the features and the benefits of our force feedback nano-scale manipulator. The description covers as well some software aspects for quick and successful nano-manipulation. As an illustration, cross sectioning of carbon nanotube...
Article
Full-text available
Scanning near-field optical microscopy (SNOM) is an optical microscopy whose resolution is not bound to the diffraction limit. It provides chemical information based upon spectral, polarization and/or fluorescence contrast images. Details as small as 20 nm can be recognized. Photophysical and photochemical effects can be studied with SNOM on a simi...
Article
We present an investigation of the physico-chemical surface properties of commercially pure titanium coverslips which were submitted to various treatments designed to optimize their topography in view of application in oral implantology. The surface microroughness, chemical composition and water wettability were analyzed on titanium coverslips prep...
Article
Oxidized titanium surfaces resulting from various processes have been structurally characterized by means of scanning force microscopy, x‐ray photoemission spectroscopy (XPS), x‐ray diffraction, and electron energy‐loss spectroscopy (EELS) with losses in the 0–100 eV range. It has been found that the surface morphology has a granular structure for...
Article
The surface topography, the chemical composition and the hydroxylation state are the surface properties playing a key role in the first stage of the biocompatibility process, namely the adsorption of water and proteins on the implant surface. To understand the very different tissue response to titanium and vanadium, we have measured the above-menti...
Article
We have imaged with scanning force microscopy in air fibronectin (Fn) molecules sprayed on mica and on polymethylmetacrylate (PMMA), the latter being extensively used as biomaterial for implants. On mica we can observe small aggregates as well as individual molecules whose shape is influenced by the tip interaction during the scanning process, most...
Article
In this study, tobacco mosaic virus (TMV) provides a resolution criterion for specimen preparation methods as well as for imaging parameters of the scanning force microscope (SFM). We present scanning force microscopic images of the virus embedded in 0.5% buffered phosphotungstic acid solution adsorbed on a freshly cleaved mica surface, and imaged...
Article
Surface properties and dissociative chemisorption of water on titanium-oxide surfaces are of particular interest for the biocompatibility of this material. Scanning force microscopy images of electropolished titanium samples and of thin films of titanium evaporated under vacuum show a similar topography with a grain size of 30 nm. Mass spectrometer...
Article
The scanning probe microscopies applied to the sequencing of DNA is a challenging goal attempted by several groups. But one limitant parameter has been the sample preparation of DNA molecules. Here we report how to hold DNA molecules fixed on mica substrate and we show the three-dimensional configuration of double-stranded DNA obtained with our sca...
Article
Atomic level structural and electronic analysis of titanium passivated by an oxide film is crucial for understanding the biocompatible properties of this transition metal. Scanning tunneling microscope (STM) images of electropolished titanium samples show a rather smooth surface in the nanometer range with structure attributed to surface defects in...

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