Projects
Design of multifunctional films from porous thin films (PTDC/CTM/098130/2008)
PartnerFundação para a Ciência e a Tecnologia
film mesoporous mesostructured functionalisationProcessing and characterization of electroactive polymers and composites based on PVDF for microelectronic, sensor and actuator applications (POCI/CTM/59425/2004)
PartnerFundação para a Ciência e a Tecnologia
piezoelectricity sensors and actuators polymers and composites material processing and characterisationStatics and dynamics if hight polarizable ultra-thin films and nano-layered superlattices (PTDC/CTM/64805/2006)
PartnerFundação para a Ciência e a Tecnologia
Filmes finos dieléctricos Superredes em multicamadas nanométricas Estruturas desordenadas e relaxadoras Propriedades dieléctricas e vibracionaisPublications
Dielectric relaxation of Sr1-1.5xBixTiO3 sol-gel thin films
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2011, JOURNAL OF APPLIED PHYSICS, 109, 6.
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Synthesis and characterization of barium strontium titanate nano powders by low temperature ambient pressure sol process
Wu, AY; Vilarinho, PM; Gonzalez, M
2010, JOURNAL OF NANOPARTICLE RESEARCH, 12, 6, 2221-2231.
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Ceramic processing strategies for thick films on copper foils
Wu, AY; Vilarinho, PM; Kingon, AI
2010, ACTA MATERIALIA, 58, 6, 2282-2290.
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Ni and Zn doped MgTiO3 thin films: Structure, microstructure, and dielectric characteristics
Surendran, KP; Wu, AY; Vilarinho, PM; Ferreira, VM
2010, JOURNAL OF APPLIED PHYSICS, 107, 11.
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Low temperature dielectric characterization of Mg-doped SrTiO3 thin films prepared by sol-gel
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2010, APPLIED PHYSICS LETTERS, 96, 15.
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Dielectric response of polycrystalline Sr1-1.5xBixTiO3 thin films under direct current bias
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2010, APPLIED PHYSICS LETTERS, 97, 6.
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Textured Microstructure and Dielectric Properties Relationship of BaNd2Ti5O14 Thick Films Prepared by Electrophoretic Deposition
Fu, Z; Vilarinho, PM; Wu, AY; Kingon, AI
2009, ADVANCED FUNCTIONAL MATERIALS, 19, 7, 1071-1081.
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Titanium tellurite thick films prepared by electrophoretic deposition and their dielectric properties
Su, X; Wu, AY; Vilarinho, PM
2009, SCRIPTA MATERIALIA, 61, 5, 536-539.
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Low-Temperature Hydrothermal Deposition of (BaxSr1-x)TiO3 Thin Films on Flexible Polymeric Substrates for Embedded Applications
Hou, RZ; Wu, AY; Vilarinho, PA
2009, CHEMISTRY OF MATERIALS, 21, 7, 1214-1220.
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Electrical properties of sol-gel derived MPB 0.37BiScO(3)-0.63PbTiO(3) thin films deposited on iridium oxide electrodes
Xiao, JZ; Wu, AY; Vilarinho, PM; Ramos, AR; Alves, E
2009, JOURNAL OF MATERIALS CHEMISTRY, 19, 31, 5572-5579.
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Surface charging or templating by carbonaceous substances to broaden the adsorption performance of clinoptilolite-rich tuff.

In Władysław Rudziński (Eds.), ANNALES
Chmielewská E, Sabová L, Wu A, Aranyosiová M, Velic D
2007, 35-48, Lublin, Polónia, Universitatis Maria e Curie - Sklodowska .
ISBN:
0137-6853
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Piezoelectric Thick Film Composites: Processing and Applications

Recent Research Developments in Materials Science
Kholkin A L, Wu A, Vilarnho PM
2004, 5, 1-24, Korela India, Research Signpost Publisher.
ISBN:
81-7736-203-8
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Patents
Method for the preparation at low temperatures of ferroelectric thin films, the ferroelectric thin films thus obtained and their applications

Processes InternationalNational
Vilarinho, Paula ; Wu, Aiying; Calzada, Maria; Rioboo, Ricardo; Bretos, Ignos
A processing technology for the fabrication at low temperatures of ferroelectric crystalline oxide thin films, among others PbZrxTi1-xO3 (PZT) (<400 ºC for PZT) with ferroelectric properties appropriate for integration in devices is herein disclosed. The method is also valid for the fabrication of ferroelectric thin film...Process for obtaining thin films of barium and strontium titanate at low temperatures by sol-gel and high tunable dielectric permittivity

Processes National
Vilarinho, Paula; Wu, Aiying; Gao, Jie
The present invention relates to a new process for obtaining thin films of dielectric, piezoelectric and ferroelectric materials at low temperatures, crystalline, dense and with optimized electrical properties, in particular barium and strontium titanate, BST, at low temperatures, 600 °C. Conventional sol gel solutions are mixed...Production of thick ceramic composite films via sol gel solutions sedimentation and infiltration

Processes National
Vilarinho, Paula; Wu, Aiying; Kholkin, Andrei
The present invention relates to a method for producing ceramic composite thick films of a thickness above 50 microns on a selected group of substrates at temperatures below 600 degrees Celsius, for piezoelectric applications.Sol-gel solutions are mixed with up to about 90% by weight of powder particles (ceramic or single cr...Tunable dielectric composite and method for the production thereof

Materials InternationalNational
Dielétrico compósito sintonizável e processo de fabrico
The present invention relates to composite dielectric materials with low dielectric losses and high tunability of the relative dielectric permittivity, in the form of thick films to be used and integrated in circuits, as passive components of tunable devices, for application at radio and microwave frequencies, and methods for the produc...