Laboratorio Plast ICs

Catania, Italy

Laboratorio Plast ICs

Catania, Italy

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Scandurra A.,Laboratorio Superfici e Interfasi SUPERLAB | Scandurra A.,Laboratorio Plast ICs | Indelli G.F.,Laboratorio Superfici e Interfasi SUPERLAB | Indelli G.F.,Laboratorio Plast ICs | And 2 more authors.
Surface and Interface Analysis | Year: 2012

Patterned thin film electrodes of platinum and silver have been obtained by printing techniques onto sodium perfluorosulphonate membranes to prepare ionic polymer-metal composite actuators. Metal adhesion has been improved by oxygen plasma activation of perfluorosulphonate. Plasma treatment produces oxygen-containing functional groups at surfaces. Platinum-patterned electrodes have been obtained by two methods: (i) ink-jet printing solution of [Pt(NH 3) 4] ++ 2Cl - followed by chemical reduction and (ii) carbon black complementary mask printing followed by platinum complex adsorption and reduction. Silver-patterned electrodes have been obtained by ink-jet printing of silver-based nanoparticles ink sintered at 150 °C, ambient pressure for 1 h. The typical surface resistivity values of patterned electrodes are 5 ω sq -1 for platinum and 0.5-1 ω sq -1 for sintered silver, respectively. Perfluorosulphonate with platinum- and silver-patterned electrodes shows electrical stimuli responsivity. Copyright © 2012 John Wiley & Sons, Ltd. Copyright © 2012 John Wiley & Sons, Ltd.


Scandurra A.,Laboratorio Superfici e Interfasi SUPERLAB | Scandurra A.,Laboratorio Plast ICs | Indelli G.F.,Laboratorio Superfici e Interfasi SUPERLAB | Indelli G.F.,Laboratorio Plast ICs | And 9 more authors.
Surface and Interface Analysis | Year: 2010

Silver metal patterns onto plastic substrates have been obtained by inkjet printing with commercial ink based on silver nanoscale particles. Morphological characterization by scanning electron microscopy of spin-coating processed films indicates that a sintering treatment at 250° C for 30 min is enough to sinterize the silver metal nanoparticles. X-ray photoelectron spectroscopy characterization of sintered metal films shows that the sinterization is accompanied by a reduction of carbon surface concentration coming from carbon-containing chemical compounds present in the ink formulation. After sintering at 250° C for 30 min, the material shows typical electrical resistivity of 4.6 × 10-6 Ωcm (i.e. about three times the value of bulk silver). Printed test structures show typical resistivity after sintering at 250° C for 30 min in the range of 5-7 × 10-6 Ωcm. Copyright © 2010 John Wiley & Sons, Ltd.

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