Sami Rtimi

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Related publications (131)

RF-plasma pretreatment of surfaces leading to TiO2 coatings with improved optical absorption and OH-radical production

Juan Kiwi, César Pulgarin, Christophe Roussel, Oualid Baghriche, Sami Rtimi

Evidence is presented for the RF pretreatment of polyester enhances the TiO2 coating generation of oxidative species/radicals under a low level actinic light irradiation. After 30 min RF-plasma pretreatment of the polyester samples, the fastest bacterial i ...

Elsevier2013

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)

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Sami Rtimi

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

TiON and TiON-Ag sputtered surfaces leading to bacterial inactivation under indoor actinic light

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

This study reports the details Escherichia coli inactivation kinetics on TiON and TiON-Ag films sputtered on polyester by direct current reactive magnetron sputtering (DC) and pulsed magnetron sputtering (DCP) in an Ar/N2 /O2 atmosphere. The use of TiON le ...

2013

RF-plasma pretreatment of surfaces leading to TiO2 coatings with improved optical absorption and OH-radical production (vol 130, pg 65, 2013)

Juan Kiwi, César Pulgarin, Christophe Roussel, Oualid Baghriche, Sami Rtimi

Elsevier2013

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

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Sami Rtimi

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

Evidence for TiON sputtered surfaces showing accelerated antibacterial activity under simulated solar irradiation

Michaël Bensimon, Juan Kiwi, César Pulgarin, Sami Rtimi

New evidence is reported for TiON sputtered polyester surfaces activated by sunlight irradiation leading to the accelerated bacterial inactivation in the minute range. The absorption in Kubelka-Munk units of the TiON film was observed to be directly propor ...

Elsevier2013

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

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

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 TiO2/Cu Nanosurfaces Inactivating Bacteria in the Minute Range under Low-Intensity Actinic Light

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Oualid Baghriche, Sami Rtimi

The bacterial inactivation of E. coli by cotton TiO2/Cu DC-magnetron sputtered thin films was investigated in the dark and under low-intensity actinic light. The TiO2/Cu sputtered layers revealed to be sensitive to actinic light showing the spectral charac ...

Amer Chemical Soc2012

Photocatalysis/catalysis by innovative TiN and TiN-Ag surfaces inactivate bacteria under visible light

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Oualid Baghriche, Sami Rtimi

This study presents the design, preparation, testing and characterization of TiN and TiN-Ag nanoparticulate films leading to photocatalytic and catalytic inactivation of Escherichia coli. When Ti was sputtered in N2 atmosphere, the TiN films unexpectedly r ...

Elsevier2012

Effect of the spectral properties of TiO2, Cu, TiO2/Cu sputtered films on the bacterial inactivation under low intensity actinic light

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Oualid Baghriche, Sami Rtimi

Bacterial inactivation by TiO2, Cu and TiO2/Cu DC-magnetron sputtered thin films was systematically investigated in the dark and under low intensity visible/actinic light. Low intensity actinic light led to a fast 6log10 (complete) bacterial inactivation w ...

Elsevier2012

Design, testing and characterization of innovative TiN–TiO2 surfaces inactivating bacteria under low intensity visible light

Juan Kiwi, César Pulgarin, Rosendo Sanjines, Oualid Baghriche, Sami Rtimi

Ti was sputtered in a plasma chamber under a N2 atmosphere, depositing TiN films on polyester fibers. These films show a significant adsorption in the visible spectral region. A TiN layer 50 nm thick sputtered for 3 min under low intensity/actinic visible ...

Royal Soc Chemistry2012

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