Listar Ciencias Exactas y Naturales por tema "Filmes poliméricos"
Mostrando ítems 1-5 de 5
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Apparatus for processing of samples at high pressures and high temperatures in a fast quenching-rate regime and synthesis of polyacetylene by pulsed laser heating of confined carbon thin films
(2011) [Artículo de periódico]The pulsed laser heating of confined samples followed by ultrafast cooling constitutes an interesting route to explore the production of new phases and compounds. Indeed, in some cases the ultrafast cooling allows retaining ... -
Confinement effects of ion tracks in ultrathin polymer films
(2015) [Artículo de periódico]We show direct experimental evidence that radiation effects produced by single MeV heavy ions on a polymer surface are weakened when the length of the ion track in the material is confined into layers of a few tens of ... -
Estudo das propriedades térmicas de filmes poliméricos compostos de speek, derivados de benzoimidazol e ácido fosfotúngstico
(2008) [Artículo de periódico]Filmes poliméricos foram desenvolvidos a partir de poli (éter éter cetona) sulfonado (SPEEK), derivados do benzoimidazol e ácido fosfotúngstico (HPW). Neste trabalho foi realizado um estudo utilizando a análise termogravimétrica ... -
Ralaxation times of nanoscale deformations on the surface of a polymer thin film near and below the glass transition
(2006) [Artículo de periódico]We report on measurements of relaxation times of nanometer-sized deformations resulting from the impact of individual energetic ions on poly methyl methacrylate surfaces at temperatures close to and below the glass transition ... -
Refractive index control in bicomponent polymer films for integrated thermo-optical applications
(2009) [Artículo de periódico]Optical properties of transparent polymer thin films, produced by spin-coating on silicon and constituted of polycarbonate PC , poly- methyl methacrylate PMMA , and PC/PMMA, were investigated with regard to integrated ...