14 research outputs found

    Institutional dynamics and organizations affecting the adoption of sustainable development in the United Kingdom and Brazil

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    This paper provides an exploratory comparative assessment of the institutional pressures influencing corporate social responsibility (CSR) in a developed country, UK, vs. a developing country, Brazil, based on a survey of different actors. Information on sustainability concerns, organizational strategies and mechanisms of pressure was collected through interviews with environmental regulatory agencies, financial institutions, media and non-governmental organizations. Our results confirm that the more advanced awareness and CSR responsiveness in the UK is a consequence of a predominance of coercive and normative forces on the organizational field. The institutional forces tend to build a Brazilian organizational field that is relational based and risk intensive. The findings lend support to the view that CSR responses are unlikely to be easily transformed into uniform standardized practices across the globe. This paper contributes to a collective understanding of the organizational field and a common template for CSR in the context of developed and developing countries

    A chemically stable PVD multilayer encapsulation for lithium microbatteries

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    A multilayer physical vapour DEPOSITION (PVD) thin-film encapsulation method for lithium microbatteries is presented. Lithium microbatteries with a lithium cobalt oxide (LiCoO2) cathode, a lithium phosphorous oxynitride (LiPON) electrolyte and a metallic lithium anode are under development, using PVD DEPOSITION techniques. Metallic lithium film is still the most common anode on this battery technology; however, it presents a huge challenge in terms of material encapsulation (lithium reacts with almost any materials deposited on top and almost instantly begins oxidizing in contact with atmosphere). To prove the encapsulation concept and perform all the experiments, lithium films were deposited by thermal evaporation technique on top of a glass substrate, with previously patterned Al/Ti contacts. Three distinct materials, in a multilayer combination, were tested to prevent lithium from reacting with protection materials and atmosphere. These multilayer films were deposited by RF sputtering and were composed of lithium phosphorous oxide (LiPO), LiPON and silicon nitride (Si3N4). To complete the long-term encapsulation after breaking the vacuum, an epoxy was applied on top of the PVD multilayer. In order to evaluate oxidation state of lithium films, the lithium resistance was measured in a four probe setup (cancelling wires/contact resistances) and resistivity calculated, considering physical dimensions. A lithium resistivity of 0.16 Ω μm was maintained for more than a week. This PVD multilayer exonerates the use of chemical vapour DEPOSITION(CVD), glove-box chambers and sample manipulation between them, significantly reducing the fabrication cost, since battery and its encapsulation are fabricated in the same PVD chamber.This work was financially supported by FEDER/COMPETE and FCT funds with the projects PTDC/EEA-ELC/114713/2009, PEST-C/QUI/UI0686/2013 and UID/EEA/04436/2013, first author scholarship SFRH/BD/78217/2011, fourth author scholarship SFRH/BPD/95905/2013, and CRUP AI TC-09_14
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