Herein, we report a systematic study on the wetting and optical properties of a PDMS surface coated by silver nanoparticles. A uniform Ag nanoparticles distribution onto PDMS membrane was obtained through dc room-temperature sputtering. The effect of sputtering current and PDMS mixing ratio between oligomer and curing agent was investigated by means of UV-vis spectroscopy and contact angle measurements. The results clearly show that the wettability and optical properties of the silver-coated elastomeric substrate were strongly affected by the sputtering current and by the PDMS composition with a Marked decrease Of the water contact angle and the spectral shift of well-defined plasmonic dips in the transmittance spectra related to the nanoparticles morphology. The finite element Method was employed to model the optical experimental results. The observed: tunable properties can find huge applications in several technological fields in which PDMS was usually employed as the structural and/or plasmonic active element.

Easy Tuning of Surface and Optical Properties of PDMS Decorated by Ag Nanoparticles / Lamberti, A.; Virga, A.; Rivolo, P.; Angelini, A.; Giorgis, F.. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 119:25(2015), pp. 8194-200-8200. [10.1021/acs.jpcb.5b02581]

Easy Tuning of Surface and Optical Properties of PDMS Decorated by Ag Nanoparticles

Angelini, A.;
2015

Abstract

Herein, we report a systematic study on the wetting and optical properties of a PDMS surface coated by silver nanoparticles. A uniform Ag nanoparticles distribution onto PDMS membrane was obtained through dc room-temperature sputtering. The effect of sputtering current and PDMS mixing ratio between oligomer and curing agent was investigated by means of UV-vis spectroscopy and contact angle measurements. The results clearly show that the wettability and optical properties of the silver-coated elastomeric substrate were strongly affected by the sputtering current and by the PDMS composition with a Marked decrease Of the water contact angle and the spectral shift of well-defined plasmonic dips in the transmittance spectra related to the nanoparticles morphology. The finite element Method was employed to model the optical experimental results. The observed: tunable properties can find huge applications in several technological fields in which PDMS was usually employed as the structural and/or plasmonic active element.
JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/63078
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