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Sökning: WFRF:(Mazzolai B.)

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2.
  • Ferrara, R, et al. (författare)
  • Atmospheric mercury sources in the Mt. Amiata area, Italy
  • 1998
  • Ingår i: Science of the Total Environment. - 1879-1026. ; 213:1-3, s. 13-23
  • Tidskriftsartikel (refereegranskat)abstract
    • Mt. Amiata, located in southern Tuscany (Italy), is part of the geologic anomaly of the Mediterranean basin, which contains about 65% of the world's cinnabar (HgS) deposits. Atmospheric mercury emissions from the main sources (geothermal power plants, abandoned mine structures and spoil banks of roasted cinnabar ore) were determined by flux chamber and by LIDAR remote sensing. Mercury emissions from five geothermal power plants were on the order of 24 g h(-1) for each plant, a value that remains constant throughout the year. In the month of July, the mine spoils (covering an area of similar to 200000 m(2)) emit a few grams of mercury per hour, while the abandoned mine structures give off 100-110 g h(-1). These two mercury sources were strongly influenced by ambient temperature. The area affected by mercury sources displays an average air mercury concentration of 20 ng m(-3) during the summer and 10 ng m(-3) in winter. (C) 1998 Elsevier Science B.V.
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3.
  • Taccola, S, et al. (författare)
  • Thin film free-standing PEDOT:PSS/SU8 bilayer microactuators
  • 2013
  • Ingår i: Journal of Micromechanics and Microengineering. - : Institute of Physics: Hybrid Open Access. - 0960-1317 .- 1361-6439. ; 23:11, s. 117004-
  • Tidskriftsartikel (refereegranskat)abstract
    • Several smart active materials have been proposed and tested for the development of microactuators. Among these, conjugated polymers are of great interest because miniaturization improves their electrochemical properties, such as increasing the speed and stress output of microactuators, with respect to large-scale actuators. Recently we developed a novel fabrication process to obtain robust free-standing conductive ultra-thin films made of the conjugated polymer poly(3, 4-ethylenedioxythiophene) doped with the polyanion poly(styrenesulfonate) (PEDOT:PSS). These conductive free-standing nanofilms, with thicknesses ranging between a few tens to several hundreds of nm, allow the realisation of new all polymer microactuators using facile microfabrication methods. Here, we report a novel processing method for manufacturing all polymer electrochemical microactuators. We fabricated and patterned free-standing PEDOT: PSS/SU8 bilayer microactuators in the form of microfingers of a variety of lengths using adapted microfabrication procedures. By imposing electrochemical oxidation/reduction cycles on the PEDOT: PSS we were able to demonstrate reversible actuation of the microactuators resulting in bending of the microfingers. A number of possible applications can be envisaged for these small, soft actuators, such as microrobotics and cell manipulation.
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  • Resultat 1-4 av 4

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