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Carlos J. Dias
Researcher at Universidade Nova de Lisboa
Publications - 102
Citations - 1852
Carlos J. Dias is an academic researcher from Universidade Nova de Lisboa. The author has contributed to research in topics: Dielectric & Piezoelectricity. The author has an hindex of 18, co-authored 102 publications receiving 1673 citations. Previous affiliations of Carlos J. Dias include Bangor University & Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa.
Papers
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Journal ArticleDOI
Analytical evaluation of the interdigital electrodes capacitance for a multi-layered structure
Rui Igreja,Carlos J. Dias +1 more
TL;DR: In this article, the capacitance between the two comb electrodes of a periodic interdigital capacitive sensor, based on conformal mapping techniques, is analyzed for any space and finger width as well as for any number of layers with different thickness and permittivity.
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Inorganic ceramic/polymer ferroelectric composite electrets
Carlos J. Dias,D.K. Das-Gupta +1 more
TL;DR: In this paper, a review of models predicting the electro-active properties of 0-3 composites is presented together with a proposal for a new mixed connectivity cubes model to be applicable to the case of high ceramic loading and/or when the ceramic grain size incorporated in the polymer matrix is comparable to the thickness of the sample.
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Dielectric response of interdigital chemocapacitors: The role of the sensitive layer thickness
Rui Igreja,Carlos J. Dias +1 more
TL;DR: In this article, an analytical model for the capacitance of interdigital capacitive sensors was used to explain the relationship between the sensor response and its geometrical parameters, in particular what concerns the sensitive layer (sorbent material) thickness for a given electrode geometry.
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Single chip interdigitated electrode capacitive chemical sensor arrays
Maria Kitsara,Dimitrios Goustouridis,Stavros Chatzandroulis,Margarita Chatzichristidi,Ioannis Raptis,Th. Ganetsos,Rui Igreja,Carlos J. Dias +7 more
TL;DR: In this article, the design considerations, fabrication and first evaluation results of a capacitive type single chip chemical sensor array based on interdigitated electrode structure is presented, and the electrode arrays have been fabricated with conventional semiconductor processes.
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Extension to the analytical model of the interdigital electrodes capacitance for a multi-layered structure
Rui Igreja,Carlos J. Dias +1 more
TL;DR: A novel approach will extend the previous analytical model for the computation of the capacitance of Interdigital electrodes in order to account for the cases where there is a decrease in the permittivity from layer to layer.