Publications

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2016
Pereira, Fabio M., Iwona Bernacka-Wojcik, Rita Rodrigues S. Ribeiro, Maria Teresa Lobato, Elvira Fortunato, Rodrigo Martins, Rui Igreja, Pedro AS Jorge, Hugo Aguas, and Abel Martin Gonzalez Oliva. "Hybrid Microfluidic Platform for Multifactorial Analysis Based on Electrical Impedance, Refractometry, Optical Absorption and Fluorescence." Micromachines. 7 (2016). AbstractWebsite
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Goswami, Sumita, Suman Nandy, Tomas R. Calmeiro, Rui Igreja, Rodrigo Martins, and Elvira Fortunato. "Stress Induced Mechano-electrical Writing-Reading of Polymer Film Powered by Contact Electrification Mechanism." Scientific Reports. 6 (2016). AbstractWebsite
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2015
Bernacka-Wojcik, Iwona, Hugo Aguas, Fabio Ferreira Carlos, Paulo Lopes, Pawel Jerzy Wojcik, Mafalda Nascimento Costa, Bruno Veigas, Rui Igreja, Elvira Fortunato, Pedro Viana Baptista, and Rodrigo Martins. "Single Nucleotide Polymorphism Detection Using Gold Nanoprobes and Bio-Microfluidic Platform With Embedded Micro lenses." Biotechnology and Bioengineering. 112 (2015): 1210-1219. Abstract
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2014
Sanguino, Pedro, Tiago Monteiro, Frederico Marques, Carlos J. Dias, Rui Igreja, and Ricardo Franco. "Interdigitated Capacitive Immunosensors With PVDF Immobilization Layers." Ieee Sensors Journal. 14 (2014): 1260-1265. Abstract
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Sanguino, P., Tiago Monteiro, S. R. Bhattacharyya, C. J. Dias, Rui Igreja, and Ricardo Franco. "ZnO nanorods as immobilization layers for interdigitated capacitive immunosensors." Sensors and Actuators B-Chemical. 204 (2014): 211-217. Abstract
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2011
Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, P. Inacio, J. N. Marat-Mendes, and Ieee Discrimination between Space Charge and Dipolar Contributions in Ferroelectric Polymers., 2011. Abstract

The final thermally stimulated discharge current method allows a better selection of the experimental conditions for sample polarization. By decreasing the ratio between the charging time and the discharging time, the apparent peak is of the same order of magnitude as the genuine peaks and there is only a partial overlap between then. Two peaks have been identified for polyamide 11, one associated with the glass transition around 60 degrees C and the second associated with the Curie transition around 96 degrees C.

Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, P. Inacio, and J. N. Marat-Mendes. "The use of the final thermally stimulated discharge current technique to study the molecular movements around glass transition." Journal of Non-Crystalline Solids. 357 (2011): 385-390. Abstract
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2010
Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, P. Inacio, and J. N. Marat-Mendes. "Charge Carriers Injection/Extraction at the Metal-Polymer Interface and Its Influence in the Capacitive Microelectromechanical Systems-Switches Actuation Voltage." Journal of Nanoscience and Nanotechnology. 10 (2010): 2503-2511. Abstract
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Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, and J. N. Marat-Mendes. "Medium Electric Field Electron Injection/Extraction at Metal-Dielectric Interface." Advanced Materials Forum V, Pt 1 and 2. Eds. L. G. Rosa, and F. Margarido. Vol. 636-637. Materials Science Forum, 636-637. 2010. 437-443. Abstract
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Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, P. Inacio, J. N. Marat-Mendes, and Ieee. "On the Width of the Thermally Stimulated Discharge Current Peak." Proceedings of the 2010 Ieee International Conference on Solid Dielectrics. IEEE International Conference on Solid Dielectrics-ICSD. 2010. Abstract
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Neagu, E. R., C. J. Dias, M. C. Lanca, R. Igreja, P. Inacio, J. N. Marat-Mendes, and Ieee. "The Study of the Molecular Movements in the Range of Glass Transition by the Final Thermally Stimulated Discharge Current Technique." Proceedings of the 2010 Ieee International Conference on Solid Dielectrics. IEEE International Conference on Solid Dielectrics-ICSD. 2010. Abstract
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2006
Basilio, A., R. Igreja, P. Inacio, C. Dias, and J. Marat-Mendes. "Development of an ultrasonic motor based on a piezoelectric ceramic sandwiched between two laminate composite plates." Advanced Materials Forum Iii, Pts 1 and 2. Ed. P. M. Vilarinho. Vol. 514-516. Materials Science Forum, 514-516. 2006. 221-224. Abstract
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2005
Raniero, L., S. Zhang, H. Aguas, I. Ferreira, R. Igreja, E. Fortunato, and R. Martins. "Role of buffer layer on the performances of amorphous silicon solar cells with incorporated nanoparticles produced by plasma enhanced chemical vapor deposition at 27.12 MHz." Thin Solid Films. 487 (2005): 170-173. Abstract
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Martins, R., R. Igreja, I. Ferreira, A. Marques, A. Pimentel, A. Goncalves, and E. Fortunato. "Room temperature dc and ac electrical behaviour of undoped ZnO films under UV light." Materials Science and Engineering B-Solid State Materials for Advanced Technology. 118 (2005): 135-140. Abstract
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Chilibon, I., J. Marat-Mendes, R. Igreja, and C. J. Dias. "Ultrasound role in sol-gel processing of PbTiO(3) ceramics." Journal of Optoelectronics and Advanced Materials. 7 (2005): 2727-2735. Abstract
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2004
Igreja, R., C. J. Dias, R. Martins, E. Fortunato, I. Ferreira, and C. Dias. "Capacitance response of polysiloxane films with interdigital electrodes to volatile organic compounds." Advanced Materials Forum Ii. Vol. 455-456. 2004. 420-424. Abstract
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Ferreira, I., R. Igreja, E. Fortunato, and R. Martins. "Porous a/nc-Si : H films produced by HW-CVD as ethanol vapour detector and primary fuel cell." Sensors and Actuators B-Chemical. 103 (2004): 344-349. Abstract
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Dias, C. J., R. Igreja, R. Marat-Mendes, P. Inacio, J. N. Marat-Mendes, and D. K. Das-Gupta. "Recent advances in ceramic-polymer composite electrets." Ieee Transactions on Dielectrics and Electrical Insulation. 11 (2004): 35-40. Abstract
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Pereira, L., H. Aguas, R. Igreja, R. M. S. Martins, N. Nedev, L. Raniero, E. Fortunato, and R. Martins. "Sputtering preparation of silicon nitride thin films for gate dielectric applications." Advanced Materials Forum Ii. Eds. R. Martins, E. Fortunato, I. Ferreira, and C. Dias. Vol. 455-456. Materials Science Forum, 455-456. 2004. 69-72. Abstract
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2002
Igreja, R., C. J. Dias, and J. N. Marat-Mendes. "Smart materials: The functional properties of ceramic/polymer composites and their relation to sol-gel powder preparation." Advanced Materials Forum I. Ed. T. Vieira. Vol. 230-2. Key Engineering Materials, 230-2. 2002. 177-180. Abstract
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Igreja, R., C. J. Dias, J. N. Marat-Mendes, and T. Vieira. "Smart materials: The functional properties of ceramic/polymer composites and their relation to sol-gel powder preparation." Advanced Materials Forum I. Vol. 230-2. 2002. 177-180. Abstract
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1999
Igreja, R., C. Dias, and J. Marat-Mendes. "Processing and characterization of sol-gel derived modified PbTiO(3) for ferroelectric composites." Ferroelectrics. 228 (1999): 99-109. Abstract
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Igreja, R., C. Dias, and J. Marat-Mendes. "Processing and characterization of sol-gel derived modified PbTiO(3) for ferroelectric composites." Ferroelectrics. 228 (1999): 99-109. Abstract
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1998
Igreja, R., C. J. Dias, and J. N. Marat-Mendes Development of ferroelectric ceramic/polymer composites for electro-active sensors applications., 1998. Abstract
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Igreja, R., C. J. Dias, J. N. Marat-Mendes, and NM White. "Development of ferroelectric ceramic/polymer composites for electro-active sensors applications." Eurosensors Xii, Vols 1 and 2. 1998. 473-476. Abstract
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