A5086185440- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Semiconductor materials and devices
- Ion-surface interactions and analysis
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- Electronic and Structural Properties of Oxides
- Catalytic Processes in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Carbon Nanotubes in Composites
- Force Microscopy Techniques and Applications
- Plasma Diagnostics and Applications
- Advanced materials and composites
- Electron and X-Ray Spectroscopy Techniques
- Advanced ceramic materials synthesis
- Copper Interconnects and Reliability
- Advancements in Battery Materials
- Hydrogen Storage and Materials
- Thin-Film Transistor Technologies
- High-pressure geophysics and materials
- Boron and Carbon Nanomaterials Research
- Advanced Sensor and Energy Harvesting Materials
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
Fondazione Bruno Kessler
2013-2025
Microsystems (United Kingdom)
2018
Istituto Centrale per la Ricerca Scientifica e Tecnologica Applicata al Mare
1994-2011
Construction Technologies Institute
2000-2007
Linköping University
2002
Thinfilm (Sweden)
2002
Istituto Nazionale per la Fisica della Materia
1996-1998
University of Trento
1993-1998
Consorzio Interuniversitario Fisica Spaziale
1993
Chimie ParisTech
1989-1990
Transfer printing has been reported recently as a viable route for electronics on flexible substrates. The method involves transferring micro-/macrostructures such wires or ultra-thin chips from Si (silicon) wafers to the substrates by using elastomeric transfer poly(dimethylsiloxane) (PDMS). A major challenge in this process is posed residues of PDMS, which are left over surface after nanostructures have transferred. As insulator, PDMS make it difficult realize metal connections and hence...
Parametrization models of optical constants, namely Tauc–Lorentz (TL), Forouhi–Bloomer (FB) and modified FB models, were applied to the interband absorption amorphous carbon films. The constants determined by means transmittance reflectance measurements in visible range. studied films prepared rf sputtering characterized for their chemical properties. analytical also other data published literature pertaining produced various deposition techniques. different approaches used determine...
We report the effect of neodymium (Nd) doping TiO2 thin films produced on quartz, soda lime and silicon substrates by RF co-sputtering two targets metallic Nd. The Nd/Ti ratio was varied in range 0.9–100 at.%. A study based a joint use Auger electron spectroscopy X-ray fluorescence analysis allowed us to define chemical composition all deposited films. piece direct evidence structural changes (phase transformation from anatase rutile for atomic up 43 at.%) amorphization an equal 100 at.%,...
Abstract The influence of hydrogen addition to an Ar plasma on the structural properties TiO 2− x films produced by RF sputtering a 2 target at room temperature was studied. were characterized x-ray photoelectron spectroscopy while surface morphology analysed using scanning electron microscopy (SEM). valence band analysis showed crystal field splitting d states into doubly and triply degenerate states. H created additional d-state due distortions in structure Jahn–Teller mechanism....
Precise control of the various structural phases TiO2 at a low temperature is particularly important for practical applications. In this work, deposition conditions growth anatase and rutile phase (≤300 °C) were optimized. films deposited by radio frequency (RF) sputtering ceramic target in argon argon-oxygen plasma (10 20% O2) room temperature. For pure Ar O2, was varied from 25 to 400 °C. The properties investigated using optical emission spectroscopy (OES) wide range values gas...
Sputtering onto liquids is rapidly gaining attention for the green and controlled dry synthesis of ultrapure catalysts nanomaterials. In this study, we present a clean single-step method gold nanoparticles directly in polyethylene glycol (PEG) liquid using radio frequency (RF) magnetron sputtering by subsequently transferring them to Nafion ionomer, fabricating catalyst-coated membrane (CCM), an essential component proton exchange water electrolyzer (PEMWE). The samples were systematically...
In this work, TiO 2 films produced by rf sputtering of a target in argon and argon–oxygen plasmas were studied. The oxygen content the feed gas was varied range 3–20%. chemical composition structure characterized Rutherford backscattering spectrometry, x-ray photoelectron spectroscopy (XPS) diffraction. Important information about intrinsic defects their effects on optical properties as well scheme energy band could be derived from combined use XPS.
The present work highlights the progress in field of polymeric package reliability engineering for a flexible thermoelectric generator realized by thin-film technology on Kapton substrate. effects different plasma treatments mechanical performance at interface poly(dimethylsiloxane) (PDMS)/Kapton assembly were investigated. To increase stability wearable power source, surface wettability after exposure was investigated static contact-angle measurements using deionized water and PDMS as test...
Two new absorber coatings for mid-temperature operation (300–350 °C) in collectors solar thermal electricity plants are presented this study. The absorbers consist of two cermet layers either W–SiO2 or Nb–TiO2, deposited on a molybdenum infrared reflector and coated with an antireflection layer silicon oxide. optimization the optical performance was made steps. First, structure optimized model calculations. constants used modelling were derived directly from sputtered films constituents...
Abstract
The effects of 30 keV N+ implantation in amorphous silicon carbide films deposited on substrates by rf sputtering over a fluence range 1×1016–2×1017 ions cm−2, are studied means x-ray photoelectron spectroscopy (XPS), Auger electron (AES), and infrared (IR) absorption techniques. ion-induced modifications these have been investigated the basis chemical state evolution Si, C, N (using XPS AES) vibrational features components IR absorption). results show that implanted bonds Si selectively,...
Zirconium oxide thin films were deposited by sputtering a ZrO2 target under an argon-oxygen gas mixture and different total pressures. Their composition, structure optical constants characterised mean of Auger profiles, XRD, XPS, m-line UV-visible spectroscopies. All the deposits found to be sub-stoechiometric with O/Zr ratio decreasing from 1.6 1.45 when deposition pressure increased 0.01 0.05 Torr. A SRIM simulation was used explain this behaviour. The XRD showed monoclinic phase for all...
The key aspects related to surface states present on an anodically formed TiO2 nanotube array are here discussed. Impedance measurements performed similar layers, in solutions at different pH, evidenced quite behaviors and conducting properties. comparison between the state capacitances three pH values showed that have be correlated with hydroxyl groups of TiO2. They characterized by a broad distribution energy band gap. Under polarization alkaline solution, charge transfer then mainly...
In this work the effect of hydrogen addition on physical properties and sputtering efficiency an radio-frequency (rf) (13.56 MHz) Ar plasma was investigated. The discharges in Ar–H2 were used to sputter-deposit carbon films from a graphite cathode, with concentration feed gas ranging 0 100% (the useful range for film growth however limited 0–85%). parameters determined using Langmuir probe, which, coupled chemical modelling ion–molecule electron–molecule reactions phase, enabled us define...