Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate) (Articolo in rivista)

Type

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

Label

• Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate) (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Napolitano, S; Prevosto, D; Lucchesi, M; Pingue, P; D'Acunto, M; Rolla, P (2007)
  Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate)
  in Langmuir
  (literal)

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

• Napolitano, S; Prevosto, D; Lucchesi, M; Pingue, P; D'Acunto, M; Rolla, P (literal)

Pagina inizio

• 2103 (literal)

Pagina fine

• 2109 (literal)

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

• 23 (literal)

Rivista

• Langmuir (Rivista)

Note

• ISI Web of Science (WOS) (literal)

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

• Univ Pisa, PolyLab, I-56100 Pisa, Italy; Univ Pisa, Dipartimento Fis, I-56100 Pisa, Italy; CNR, INFM, NEST, I-56100 Pisa, Italy; Scuola Normale Super Pisa, I-56100 Pisa, Italy; Univ Pisa, Dipartimento Ingn Chim & Sci Mat, I-56100 Pisa, Italy; Katholieke Univ Leuven, Dept Phys & Astron, Lab Acoust & Thermal Phys, B-3001 Heverlee, Belgium (literal)

Titolo

• Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate) (literal)

Abstract

• The structural dynamics of ultrathin polymer films of poly(ethylene terephthalate) capped between aluminum electrodes have been investigated by dielectric relaxation spectroscopy. A deviation from bulk behavior, appearing as an increase of the relaxation time at a fixed temperature, is observed for films of thickness below 35 nm. The slowing down acts as a constant shift factor independent from the temperature, and the fragility is constant. The interfacial energy between aluminum and poly(ethylene terephthalate) is calculated to be 3 mJ/m(2), confirming a strong interaction between polymer and substrate, which leads to the presence of a layer characterized by a reduced mobility at their interfaces. We proposed a mathematical schematization of a multylayer model that allowed qualitative reproduction of the observed thickness dependences of the static and dynamic properties. In terms of such a model, the upper limit for the thickness of the reduced mobility layer was estimated as 20 nm. The conditions to extend the proposed model to different observables are finally suggested. (literal)

Prodotto di

• Nanostrutture a semiconduttore per la nanoelettronica e la spin-fotonica (MD.P06.021.001) (Modulo)
• Film di materiali polimerici: effett di confinamento superficiale ed applicazioni (MD.P01.017.001) (Modulo)

Autore CNR

• MAURO LUCCHESI (Persona)
• PASQUALANTONIO PINGUE (Unità di personale esterno)
• PIERANGELO ROLLA (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate)" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• PIERANGELO ROLLA (Unità di personale esterno)
• PASQUALANTONIO PINGUE (Unità di personale esterno)
• MAURO LUCCHESI (Persona)

Prodotto

• Film di materiali polimerici: effett di confinamento superficiale ed applicazioni (MD.P01.017.001) (Modulo)
• Nanostrutture a semiconduttore per la nanoelettronica e la spin-fotonica (MD.P06.021.001) (Modulo)

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

• Langmuir (Rivista)

Insieme di parole chiave di

• Keywords of "Influence of a reduced mobility layer on the structural relaxation dynamics of aluminum capped ultrathin films of poly(ethylene terephthalate)" (Insieme di parole chiave)