Rosendo Sanjines

Cette personne n’est plus à l’EPFL

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Publications associées (57)

TiO2 and TiO2-Doped Films Able to Kill Bacteria by Contact: New Evidence for the Dynamics of Bacterial Inactivation in the Dark and under Light Irradiation

César Pulgarin, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

This paper addresses recent developments in the design, evaluation, and characterization of flexible, uniform polyethylene-TiO2 (PE-TiO2), TiO2-In2O3, and TiO2-polyester able to inactivate bacteria under band gap irradiation and in the dark. The preparatio ...

Hindawi Publishing Corporation2014

Innovative transparent non-scattering TiO2 bactericide thin films inducing increased E. coli cell wall fluidity

Lioubov Kiwi, César Pulgarin, Juan Kiwi, Andrzej Kulik, Mariusz Andrzejczuk, Sami Rtimi, Rosendo Sanjines

This study presents the first account for transparent, non-scattering TiO2 films on radio-frequency (RF) plasma and ultraviolet light in the C-spectral region (UVC) pretreated polyethylene (PE). These pretreatments allow the PE to bind higher amounts of Ti ...

Elsevier Science Sa2014

Accelerated Escherichia coli inactivation in the dark on uniform copper flexible surfaces

César Pulgarin, Michaël Bensimon, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

The bacterial inactivation of Escherichia coli on Cu/CuO-polyester surfaces prepared by direct current magnetron sputtering was investigated in the dark and under actinic light (360nm

American Vacuum Society2014

TaSiN nanocomposite thin films: Correlation between structure, chemical composition, and physical properties

Rosendo Sanjines, David Oezer

The structural and electronic properties of fcc-TaN/SiNx nanocomposite thin films deposited by reactive magnetron sputtering have been investigated as function of the N and Si contents. Our studies have been mainly focused on three different types of nanoc ...

Elsevier Science Sa2014

Thermal solar collector with VO2 absorber coating and V1-xWxO2 thermochromic glazing – Temperature matching and triggering

Andreas Schueler, Rosendo Sanjines, Antonio Paone, Mario Geiger

Overheating is a common problem both with the use of active and passive solar energy in thermal solar energy systems and in highly glazed buildings, even in central European latitudes. In solar thermal collectors, the elevated temperatures occurring during ...

2014

Sputtered titanium oxynitride coatings for endosseous applications: Physical and chemical evaluation and first bioactivity assays

Rosendo Sanjines, Alessandro Pontearso

Titanium oxynitride coatings (TiNxO3,) are considered a promising material for applications in dental implantology due to their high corrosion resistance, their biocompatibility and their superior hardness. Using the sputtering technique, TiNxO3, films wit ...

Elsevier Science Bv2014

Effect of surface pretreatment of TiO2 films on interfacial processes leading to bacterial inactivation in the dark and under light irradiation

César Pulgarin, Michaël Bensimon, Juan Kiwi, Sami Rtimi, Rosendo Sanjines, Jelena Nesic

Evidence is presented for radio-frequency plasma pretreatment enhancing the amount and adhesion of TiO2 sputtered on polyester (PES) and on polyethylene (PE) films. Pretreatment is necessary to attain a suitable TiO2 loading leading to an acceptable Escher ...

Royal Society, The2014

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

César Pulgarin, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

This study reports the design, preparation, testing and surface characterization of uniform films deposited by sputtering Ag and Ta on non-heat resistant polyester to evaluate the Escherichia coil inactivation by TaON, TaN/Ag, Ag and TaON/Ag polyester. Co- ...

Elsevier2013

ZrNO-Ag co-sputtered surfaces leading to E. coli inactivation under actinic light: Evidence for the oligodynamic effect

César Pulgarin, Juan Kiwi, Michaël Bensimon, Sami Rtimi, Rosendo Sanjines, Mirela Pascu

This study reports visible light sensitive ZrNO and ZrNO-Ag polyester samples prepared by sputtering in an Ar/N-2/O-2 atmosphere leading to Escherichia coil bacterial inactivation. The bacterial inactivation by ZrNO avoids the increasing environmental conc ...

Elsevier2013

Innovative semi-transparent nanocomposite films presenting photo-switchable behavior and leading to a reduction of the risk of infection under sunlight

César Pulgarin, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

Novel sputtered polyethylene-TiO2 (PE-TiO2) thin films induce fast bacterial inactivation with concomitant photo-switchable hydrophobic to hydrophilic transition under light. RF-plasma pretreatments allowed an increased TiO2 loading on PE, favorably affect ...

Royal Soc Chemistry2013

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TiO2 and TiO2-Doped Films Able to Kill Bacteria by Contact: New Evidence for the Dynamics of Bacterial Inactivation in the Dark and under Light Irradiation

César Pulgarin, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

Hindawi Publishing Corporation2014

Accelerated Escherichia coli inactivation in the dark on uniform copper flexible surfaces

César Pulgarin, Michaël Bensimon, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

The bacterial inactivation of Escherichia coli on Cu/CuO-polyester surfaces prepared by direct current magnetron sputtering was investigated in the dark and under actinic light (360nm

American Vacuum Society2014