An Innovative Pathway towards Nano-Sized Parylene-Based Materials Prepared by Plasma-Based Deposition: Example of Application to the Production of Antimicrobial Materials

Maggioni, G.; Castagliuolo, Ignazio

doi:10.1002/ppap.201300145

Cited by 5 publications

(1 citation statement)

References 17 publications

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“…The broadness of these peaks indicates that the average nanocrystallite size is small (≤5 nm), as could be expected taking into account that silver is distributed in an even thicker layer (6.0 × 10 17 monomeric units·cm −2 ) as compared to the other samples. As a general remark, the small average size of Ag-containing nanoparticles (less than 20 nm for all the samples) confirms their fine dispersion in the parylene matrix, already highlighted in a previous work [64].…”

Section: Resultssupporting

confidence: 85%

Nanocomposite–parylene C thin films with high dielectric constant and low losses for future organic electronic devices

Mokni¹,

Maggioni²,

Carturan³

et al. 2019

Beilstein J. Nanotechnol.

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Nanocomposite–parylene C (NCPC) thin films were deposited with a new technique based on the combination of chemical vapor deposition (CVD) for parylene C deposition and RF-magnetron sputtering for silver deposition. This method yields good dispersion of Ag-containing nanoparticles inside the parylene C polymer matrix. Film composition and structure were studied by using several techniques. It was found that the plasma generated by the RF-magnetron reactor modifies the film density as well as the degree of crystallinity and the size of parylene C crystallites. Moreover, silver is incorporated in the parylene matrix as an oxide phase. The average size of the Ag oxide nanoparticles is lower than 20 nm and influences the roughness of the NCPC films. Samples with various contents and sizes of silver-oxide nanoparticles were investigated by broadband dielectric spectroscopy (BDS) in view of their final application. It was found that both the content and the size of the nanoparticles influence the value of the dielectric constant and the frequency-dependence of the permittivity. In particular, β-relaxation is affected by the addition of nanoparticles as well as the dissipation factor, which is even improved. A dielectric constant of 5 ± 1 with a dissipation factor of less than 0.045 in the range from 0.1 Hz to 1 MHz is obtained for a 2.7 µm thick NCPC with 3.8% Ag content. This study provides guidance for future NCPC materials for insulating gates in organic field-effect transistors (OFETs) and advanced electronic applications.

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Section: Resultssupporting

confidence: 85%