Giovanna Gautier di Confiengo

ORCID: 0000-0001-8444-7595
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Research Areas
  • Bone Tissue Engineering Materials
  • Dental materials and restorations
  • Lubricants and Their Additives
  • Advanced materials and composites
  • Brake Systems and Friction Analysis
  • Metal and Thin Film Mechanics
  • Quantum Dots Synthesis And Properties
  • Dyeing and Modifying Textile Fibers
  • Ocular Disorders and Treatments
  • ZnO doping and properties
  • Photopolymerization techniques and applications
  • Electrospun Nanofibers in Biomedical Applications
  • Laser-Ablation Synthesis of Nanoparticles
  • Titanium Alloys Microstructure and Properties
  • Diamond and Carbon-based Materials Research
  • Facial Trauma and Fracture Management
  • Tribology and Wear Analysis
  • Advanced Welding Techniques Analysis
  • Facial Nerve Paralysis Treatment and Research
  • Vehicle emissions and performance
  • Adsorption, diffusion, and thermodynamic properties of materials
  • Space Satellite Systems and Control
  • Advanced Machining and Optimization Techniques
  • Additive Manufacturing Materials and Processes
  • Polymer Surface Interaction Studies

Torino e-district
2023

National Research Council
2016-2023

Center for Sustainable Future Technologies
2021

Institute for Agricultural and Earthmoving Machines
2015-2020

Consorzio Roma Ricerche
2009

Bioactive and antibacterial coatings on stainless steel substrates were developed characterized in this study. Silver nanocluster–silica composite of 60–150 nm thickness deposited using radio frequency (RF) co-sputtering PEEK/bioactive glass (BG) layers (of 80–90 μm thickness) which had been electrophoretically onto steel. Two sputtering conditions used by varying the deposition time (15 40 min); resulting microstructure, composition, adhesion strength, vitro bioactivity, activity...

10.1021/acsami.7b08646 article EN ACS Applied Materials & Interfaces 2017-08-31

Bioactive materials should maintain their properties during implantation and for long time in contact with physiological fluids tissues. In the present research, five different bioactive (a glass four chemically treated titanium surfaces) have been studied compared terms of mechanical stability surface layer-substrate interface, term bioactivity, type hydroxyapatite matured hydroxyapatite-surface layer interface. Numerous physical chemical analyses (such as Raman spectroscopy, macro micro...

10.1016/j.msec.2020.111238 article EN cc-by-nc-nd Materials Science and Engineering C 2020-06-25

Abstract In this study, multifunctional stratified antibacterial and bioactive coatings were deposited characterised. Initially, PEEK/bioactive glass (BG)/ mesoporous nanoparticle (MBGN) layers with a thickness of 110–120 μm on stainless steel substrates using electrophoretic deposition (EPD). Thin silver nanocluster-silica composite 70–155 nm then by radio frequency (RF) co-sputtering the previously EPD coatings. The was carried for two different sputtering times (20 min 40 min), which led...

10.1007/s10853-020-05725-w article EN cc-by Journal of Materials Science 2021-02-02

Two different synthetic approaches such as thermal decomposition method and microwave-assisted procedure were compared for the synthesis of nanosized ZnO. The two procedures tested using zinc acetate precursor is, or in presence coadjutants, one anthropic origin (melamine) derived from reuse agricultural waste (wine extracts). All samples physico-chemically characterized order to evaluate influence conditions on properties materials that by N2 adsorption/desorption at 77 K Field...

10.1016/j.matchemphys.2024.129485 article EN cc-by-nc-nd Materials Chemistry and Physics 2024-05-24

Nowadays, the drive for green products has undergone a rapid increase following global ecoawareness and severe regulations aimed at preventing environment from further damage. The use of ecosafe constituents in materials harsh applications, such as brake pad systems, can be possible solution reducing health hazards arising particle release during braking. Based on this, present study provides bibliographic review alternative friction material formulation, focusing attention their influence...

10.3390/su14052508 article EN Sustainability 2022-02-22

Titanium and its alloys are widely employed in the aerospace industry, their use will increase future. At present, titanium is mainly produced by Kroll method, but this expensive energy-intensive. Therefore, research of efficient sustainable methods for production has become relevant. The present review provides a description recycling used to produce mostly aeronautical components additive manufacturing, offering an overview actual state art field. More specifically, paper illustrates that...

10.3390/su16010330 article EN Sustainability 2023-12-29

A coating that was made of peppermint essential oil obtained on different metal substrates: Ti6Al4V alloy (mechanically polished and chemically etched) 316L stainless steel mechanically ground). The final aim is to get a multifunctional (chemical mechanical) protection surfaces in contact with water media. coatings were characterized by means fluorescence microscopy, angle measurements, Fourier Transformed Infrared spectroscopy (FTIR) spectroscopy. chemical stability the tested soaking for...

10.3390/ma13030516 article EN Materials 2020-01-22

Diamond-like carbon (DLC) coatings are widely used in industry for decorative/protective purposes or to improve tribological performance mechanical components. In this study, three types of commercial DLC have been tested and analysed verify their potential as functional the wear resistance commercially known Dianoir, Dropless5000, Dropless7000 were deposited on AISI 52100 steel through a proprietary cathodic arc physical vapour deposition (PVD) technique, properties compared considering...

10.1016/j.ceramint.2023.09.355 article EN cc-by-nc-nd Ceramics International 2023-10-01

This paper addresses the potential use of high-pressure cold spray (HP-CS) technology to produce a film friction material onto low-carbon steel substrate allow its as composite for stators and rotors aircraft brake units. Namely, WC-Cr3C2-Ni, WC-Ni, WC-Co-Cr, Cr3C2-NiCr WC-Co coatings were deposited by using HP-CS, purpose creating high wear resistance substrate. Tribological (friction coefficient rate) thermal properties well coating hardness adhesion evaluated assess surface materials. The...

10.3390/met12101558 article EN cc-by Metals 2022-09-20

Abstract Porous glass‐ceramics were produced by sponge replication for possible use as orbital implant materials, characterized from a morphological viewpoint, and compared to commonly used devices. Favorable characteristics of these new materials ocular applications include total porosity above 50 vol.%, presence open large macropores (>200 μm) that could potentially allow fibrovascular tissue ingrowth, submicronic surface roughness which is significantly lower than commercial “gold...

10.1111/ijac.12837 article EN International Journal of Applied Ceramic Technology 2017-11-30

Metal Matrix Composites (MMC) are very interesting materials for applications in the automotive and aerospace fields, since they combine lightness of Aluminium with strength ceramic reinforcement. These difficult to join conventional welding techniques not applicable, whereas solid-state techniques, like Friction Stir Welding (FSW), could be a solution. However hard tool will need chosen order overcome problem heavy abrasive wear. In this work wear behaviour coated uncoated steel tools has...

10.4028/www.scientific.net/kem.410-411.235 article EN Key engineering materials 2009-03-02

Up to 50 % of total PM2.5 emissions are due particles derived from the automotive sector, and both exhaust non-exhaust contribute pollution urban areas. Fuel incomplete combustion, or lubricant degradation high temperatures during combustion process, responsible for emissions. The ones concern brakes, tires road surface-wear resuspension contribution. present study aims provide a methodological approach detailed chemical characterization wear friction products by means large array techniques...

10.1016/j.heliyon.2023.e20672 article EN cc-by-nc-nd Heliyon 2023-10-01

Essential oils (EO) are complex mixtures of natural molecules with a great activity against bacteria, virus and fungi. Despite their wide use in folk medicine, employment medicine or biomedical products is still scarce there only few studies literature. Their antibacterial anti-adhesive properties interest for the development coatings functionalization implant surfaces, but also non-implantable medical devices, advantage reduced bacterial contamination, without risk developing bacteria...

10.3390/ciwc2019-06156 article EN cc-by 2019-03-07

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10.2139/ssrn.4730133 preprint EN 2024-01-01

ZnO particles, synthesized using a green method, were used as additives to enhance the tribological properties of lubricants. Polyphenolic extracts obtained from by-products winemaking process two grape varieties, Barbera (red berry) and Moscato (white berry), utilized reducing agents in synthesis starting Zn salts (nitrate acetate). The analysed for their polyphenolic profile. particles characterized by X-ray diffraction, SEM, FESEM, FTIR. A ball-on-disk tribometer was study behaviour oil...

10.3390/su16166810 article EN Sustainability 2024-08-08
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