Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s11051-012-1287-5 (literal)

Alternative label

• Ferraris, M.a, Ferraris, S.a , Miola, M.a, Perero, S.a, Balagna, C.a, Verné, E.a, Gautier, G.b, Manfredotti, Ch.c, Battiato, A.c, Vittone, E.c, Speranza, G.d, Bogdanovic, I.e (2012)
  Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity
  in Journal of nanoparticle research; Springer Science+Business Media, Dordrecht (Germania)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Ferraris, M.a, Ferraris, S.a , Miola, M.a, Perero, S.a, Balagna, C.a, Verné, E.a, Gautier, G.b, Manfredotti, Ch.c, Battiato, A.c, Vittone, E.c, Speranza, G.d, Bogdanovic, I.e (literal)

Pagina inizio

• - (literal)

Pagina fine

• - (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• Silver nanocluster/silica composite coatings were deposited in a less than two hours process on both soda-lime and silica glasses by RF co-sputtering, without densification post-treatment. The effect of thermal treatments on their microstructure in the range of 150-450 ?C, the presence of silver ions and/or silver nanoclusters, the nanocluster size and their position inside the sputtered layers have been investigated by several characterization techniques (UV- Vis, XPS, XRD, TOF-ERDA) which evidenced a sodium/silver ionic exchange between the sputtered coatings and the soda-lime substrates after heating up to 450 ?C. The antibacterial activity of all coatings was verified against S. aureus and C. albicans by disk diffusion method and colonies forming units (CFU): in agreement with the microstructural results, the antibacterial activity present on all coatings was slightly reduced after heating at 450 ?C. All coatings retained their antibacterial activity after gamma ray and ethylene oxide gas (EtO) sterilization. However, they resulted damaged by humidity plus UV ageing and by autoclave sterilization. Tape resistance (ASTM D3359-97) nanoindentation and scratch resistance tests have been done on each coating, revealing a good adhesion on soda-lime substrates and a reduced hardness of the coating deposited on soda-lime substrates after heating at 450 ?C. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 14 (literal)

Rivista

• Journal of nanoparticle research (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 12 (literal)

Note

• Scopus (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• aDepartment of Applied Science and Technology, Institute of Materials Physics and Engineering, Politecnico di Torino, Turin, Italy b IMAMOTER Institute for Agricultural and Earthmoving Machines, Turin, Italy c Physics Department, NIS Excellence Centre and CNISM, University of Torino, Turin, Italy (literal)

Titolo

• Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity (literal)

Abstract

• Silver nanocluster/silica composite coatings were deposited on both soda-lime and silica glasses by radio frequency (RF) co-sputtering. The effect of thermal treatments on the microstructure in the range of 150-450 °C were examined by UV- visible spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Time of Flight-Elastic Recoil Detection Analysis. Sodium/silver ionic exchange was evidenced for coatings sputtered on soda-lime substrates after heating at 450 °C; presence of silver ions and/or silver nanoclusters, nanocluster size and their position inside the sputtered layers will be discussed for as-deposited and heated coatings on both substrates. The antibacterial activity of all coatings was determined against Staphylococcus aureus and Candida albicans by disk diffusion method and colonies forming units count; in agreement with microstructural results, the antibacterial activity present on all coatings was slightly reduced after heating at 450 °C. All coatings have been submitted to humidity plus UV ageing and sterilization by autoclave, gamma ray and ethylene oxide gas. Tape resistance (ASTM D3359-97) tests have been done on each coating before and after ageing and sterilizations, revealing a good adhesion on soda-lime substrates, except for those aged in humidity plus UV and sterilized by autoclave. Scratch tests and nanoindentation tests have been done on each coating, as-deposited and after heating at 450 °C. The coating hardness was improved by heating only when coatings were deposited on silica. The heating of coatings deposited on soda-lime substrates gave opposite effect on their hardness. (literal)

Editore

• Springer Science+Business Media (Editore)

Prodotto di

• Lavorazione e caratterizzazione di materiali per applicazioni antiusura, meccaniche e biomedicali (SP.P03.013.001) (Modulo)
• Istituto per le macchine agricole e movimento terra (IMAMOTER) (Istituto)

Autore CNR

• GIOVANNA MARIA GAUTIER DI CONFIENGO (Persona)

Insieme di parole chiave

• Parole chiave di "Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per le macchine agricole e movimento terra (IMAMOTER) (Istituto)
• Lavorazione e caratterizzazione di materiali per applicazioni antiusura, meccaniche e biomedicali (SP.P03.013.001) (Modulo)

Autore CNR di

• GIOVANNA MARIA GAUTIER DI CONFIENGO (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of nanoparticle research (Rivista)

Editore di

• Springer Science+Business Media (Editore)

Insieme di parole chiave di

• Parole chiave di "Effect of thermal treatments on sputtered silver nanocluster/silica composite coatings on soda-lime glasses:ionic exchange and antibacterial activity" (Insieme di parole chiave)