Suchergebnisse

Indium (In) is a critical raw material heavily demanded in the optical-electronics industry. With its high supply risk, sustainable technologies are needed to recover In(III) from secondary sources, such as leachates from sludge produced by zinc processing industries (e.g., jarosite) and indium tin oxide etching wastewater. This study presents In(III) biosorption as an eco friendly alternative to conventional physicochemical recovery technologies. ; This study was partly supported by METGROW+, a project of the European Union's Horizon 2020 research and innovation programme under grant agreement No 690088. N. R. N. acknowledges the UGent Special Research Fund (BOF) for the PhD scholarship. L. O. G. acknowledges METGROW+ for the post-doctoral scholarship. L. A. acknowledges the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 676070 (MSCA-ITN project SuPER-W) for her PhD scholarship. M. G. acknowledges the Spanish Ministry of Economy and Competitiveness (RYC-2016-20059). ; Postprint (updated version)

The following article appeared in Torres, V., Beruete, M., Del Villar, I., & Sánchez, P. (2016). Indium tin oxide refractometer in the visible and near infrared via lossy mode and surface plasmon resonances with Kretschmann configuration. Applied Physics Letters, 108(4), doi:10.1063/1.4941077, and may be found at http://dx.doi.org/10.1063/1.4941077. ; An indium tin oxide (ITO) refractometer based on the generation of lossy mode resonances (LMRs) and surface plasmon resonances (SPRs) is presented. Both LMRs and SPRs are excited, in a single setup, under grazing angle incidence with Kretschmann configuration in an ITO thin- film deposited on a glass slide. The sensing capabilities of the device are demonstrated using several solutions of glycerin and water with refractive indices ranging from 1.33 to 1.47. LMRs are excited in the visible range, from 617 nm to 682 nm under TE polarization and from 533nm to 637nm under TM polarization, with a maximum sensitivity of 700 nm/RIU and 1200 nm/RIU, respectively. For the SPRs, a sensing range between 1375 nm and 2494 nm with a maximum sensitivity of 8300 nm/RIU is measured under TM polarization. Experimental results are supported with numerical simulations based on a modification of the plane-wave method for a one- dimensional multilayer waveguide. ; This work was supported in part by the Spanish Ministry of Education and Science-under Contracts FEDER TEC2013-43679-R and TEC2014-51902-C2-2-R. The FTIR spectrometer was financed by the Spanish Ministry of Economy and Competitiveness in the frame of the Project CEI10-2-2005. M. Beruete acknowledges funding by the Spanish Government under the Research Contract Program Ramón y Cajal RYC-2011-08221.