Aiying Wu

Researcher

Short CV

Jan. 2000 Ph D in Material Sciences. 
Jan. 2000 -Dec. 2002, post-doctoral  researcher in department of ceramics and glass  Engineering, University of Aveiro.
Dec. 2002 - Investigator In Associated Laboratory of “Center of Investigation of Ceramica Materials and Compositors”, University of Aveiro, Protugal.

Scientific Interests

· Wet chemical synthesis -- including nano-powders, coating powders, thin films and thick composite films;
· Electrophoretic deposition of  ceramic thick films and mechanism study;
· RF Magnetron sputtering deposition
· Microstructural analysis of solid state interface by TEM;
· Dielectric, piezoelectric and ferroelectric properties of materials (ferroelectric thin film and thick films, nano-powders and nanocomposites);
· Electromechanical application of piezoelectric composite thick films;
· Piezo-response and ferroelectric domain study by PFM.
· Sensors and actuators, MEMS, PCB, LTCC, MCMs.
· Nano-sensors and nanotechology

Present Research Group

Main present collaborators

Present projects

- Colossal permittivity perovskite films by chemical solution deposition methods for microelectronic and sensor applications (PTDC/CTM/73367/2006, project coordinator)
- Nanoscale investigation of fatigue of ferroelectric thin films and ceramics (POCI/CTM/61071/2004, project coordinator)
- Processing and characterization of electroactive polymers and composites based on PVDF for microelectronic, sensor and actuator applications (POCTI/CTM/59425/2004, member of team)
- Novel BST dielectric films for ultra high density DRAMs (POCTI/CTM/47285/2002; Member of team)

Selected Publications

- Jingzhong Xiao, Aiying Wu, Paula M. Vilarinho, “Sol-gel derived morphotropic phase boundary 0.37BiScO3-0.63PbTiO3 thin films”, Appl. Phys. Lett., 92(3) (2008).
- Min Jin, Jiayue Xu, Aiying Wu, Xinhua Li, Hui Shen, and Qingbo He, “Investigation of domain structures in PZNT93/7 crystals by chemical etching”, Cryst. Res. Technol., 1 – 4 (2008) DOI 10.1002/crat.200711080.
- Dunlu Sun, Aiying Wu, Shao-Tang Yin, “Structure, properties and impedance spectroscopy of  CaCu3Ti4O12 ceramics prepared by sol-gel process”, J. Am. Ceram. Soc. 91(1) 169-173 (2008).
- Bisserka Samuneva , Peter Djambaski, Elena Kashchieva, Georgi Chernev, Lyudmila Kabaivanova, Elka Emanuilova, Isabel M. Miranda Salvado, M.H.V. Fernandes, Aiying Wu, “Sol–gel synthesis and structure of silica hybrid biomaterials”, Journal of Non-Crystalline Solids 354 733–740 (2008).
- B S Li, A. Wu and P M Vilarinho, “Microscopic local fatigue in PZT thin films”, J. Phys. D: Appl. Phys. 40 7475–7479 (2007).
- F. Rémondière, Aiying Wu, Paula M. Vilarinho, J. P. Mercurio, “Piezoforce microscopy study of lead-free perovskite Na0.5Bi0.5TiO3 thin films”, Appl. Phys. Lett., 90, 152905 (2007).
- Zhi Fu, Aiying Wu, Paula M. Vilarinho, A.I Kingon, R. Woerdenweber, “Low Dielectric Loss BaNd2Ti5O14 Thick Films Prepared By An Electrophoretic Deposition Technique” Appl. Phys. Lett., 90, 052912 (2007).
- O. Okhay, A. Wu, P.M. Vilarinho, I.M. Reaney, A.R.L. Ramos, E. Alves, J. Petzelt, J. Pokorny, “Microstructural studies and electrical properties of Mg-doped SrTiO3 thin films”, Acta Materialia, 55, 4947–4954 (2007).
- Aiying Wu, Paula M. Vilarinho, A. Kholkin, “Low Temperature Preparation of Ferroelectric Relaxor Composite Thick Films”, J. Am. Ceram. Soc. 90(4) 1029-1037, (2007).
- Aiying Wu, G. Gonzalez-Aguilar, P. M. Vilarinho, I.M.Miranda Salvado and M.E.V. Costa, “Comparing macroscopic and microscopic properties of seeded ferroelectric thin films”, J. Electroceramics,  DOI 10.1007/s10832-007-9107-5, online: 5 April (2007).
- Zhi Fu, Aiying Wu, Paula M. Vilarinho, “Effect of seed layer thickness on texture and electrical properties of sol-gel derived (Ba0.8Sr0.2)TiO3 thin films”, Chem. Mater. 18, 3343-3350 (2006).
- G. González Aguilar, A. Wu, M.A. Reis, A.R. Ramos, I. M. Miranda Salvado, E. Alves, and M.E.V. Costa, “Diffusion processes in seeded and unseeded SBT thin films with varied stoichiometry”, Surface Science, 600, 1780-1786, (2006).
- Aiying Wu, P. M. Vilarinho, S. Srinivasan, A. I. Kingon, I. M. Reaney, D. Woodward, A. R. Ramos and E. Alves, “Microstructural Studies of PZT Thick Films on Cu Foils”, Acta Materialia, 54, 3211–3220, (2006).
- Mercedes B. González, Aiying Wu, Paula M. Vilarinho, “Influence of solvents on the microstructure and dielectric properties of Ba0.5Sr0.5TiO3 thin films prepared by diol based sol-gel process”, Chem. Mater., 18 1737-1744 (2006).
- Aiying Wu, P. M. Vilarinho, A. Kingon, “Electrophoretic deposition of lead zirconate titanate films on metal foils for embedded components”, J. Am. Ceram. Soc., 89 [2] 575–581 (2006).
- Aiying Wu, P. M. Vilarinho, V. V. Shvartsman, G. Suchaneck and A. L. Kholkin, “Domain populations in lead zirconate titanate thin films of different compositions via piezoresponse force microscopy”, Nanotechnology 16 2587-2595 (2005).
- O. Okhay, Aiying Wu, P. M. Vilarinho, “The Mg influence on the properties of SrTiO3 thin films”, J. Euro. Ceram. Soc. 25 3079-3083 (2005).
- Zhenrong Li, Aiying Wu, P. M. Vilarinho, Ian M. Reaney, “Core-shell microstructures in 0.68Pb(Fe2/3W1/3)O3-0.32PbTiO3 at the morphotropic phase boundary”, J. Physics: Condensed Matter 17 No 13 2167-2175 (2005).
- Zhenrong Li, Aiying Wu, P. M. Vilarinho, “Perovskite Phase Stabilization of Pb(Zn1/3Ta2/3)O3 Ceramics Induced by PbTiO3 Seeds”, Chem. Mater., 16 (4) 717-723 (2004).
- A. Wu, P. M. Vilarinho, I. Reaney, I. M. Miranda Salvado, “Early Stages of Crystallization of Sol-Gel Derived Lead Zirconate Titanate Thin Films” Chem. Mater., 15 (5) 1147-1155 (2003).
- Aiying Wu, Paula. M. Vilarinho, Isabel. M. Miranda Salvado, João. L. Baptista, Zhaoxia Zhou, I. M. Reaney, Ana. R. Ramos, Maria. F. da Silva, "Effect of Lead Zirconate Titanate Seeds on PtxPb Formation during the Pyrolysis of Lead Zirconate Titanate Thin Films" J. Am. Ceram. Soc., 85 (3) 641-646 (2002).
- Aiying Wu, P. M. Vilarinho,A. L. Kholkin, I. M. Miranda Salvado, J. L. Baptista, "Seeding effect on the fatigue behavior of PZT thin films", Integrated Ferroelectrics, 37 (1-4), 475-484 (2001).
- A. L. Kholkin, V. Yarmarkin, Aiying Wu, M. Avdeev, P. M. Vilarinho, and J. L. Baptista, "PZT-based Thick Film Composites for Electromechanical Applications" J. European Ceram. Soc. 21 1535-1538 (2001).
- A. L. Kholkin, A. Gruverman, Aiying Wu, M. Avdeev, P. M. Vilarinho, I. M. Miranda Salvado, J. L. Baptista, “Seeding Effect on Micro- and Domain Structure of Sol-Gel Derived PZT Thin Films”, Mater. Lett. 50 219-224 (2001).
- Aiying Wu, P. M. Vilarinho, I. M. Reaney, I. M. Miranda Salvado, J. L. Baptista, “Kinetic Aspects of the Formation of Seeded Lead Zirconate Titanate Thin Films” Integrated Ferroelectrics, 30 261-270 (2000).
- Aiying Wu, Li Yang, P. M. Vilarinho, I. M. Miranda Salvado & J. L. Baptista, “Structural and Electrical Properties of Seeded PZT Thin Films” Thin Solid Films 375 (1) 24-28 (2000).
- Aiying Wu, P. M. Vilarinho, I. M. Miranda Salvado & J. L. Baptista, “Sol-gel preparation of PZT powders and ceramics: effect of alkoxide stabilizers and lead precursors”, J. Am. Ceram. Soc., 83(6) 1379-1385 (2000).
- Aiying Wu, I. M. Miranda Salvado, P. M. Vilarinho, J. L. Baptista & A. J. D. Silvestre, “Lead zirconate titanate stable stock solution: characterization and applications” J. Sol-Gel Sci. & Tech. 19 671-676 (2000)
- A. L. Kholkin, V. Yarmarkin, Aiying Wu, P. M. Vilarinho, and J. L. Baptista, “Thick Piezoelectric Coatings Via a Modified Sol-Gel Technique” Integrated Ferroelectrics, 30 245-252 (2000).
- Aiying Wu, P. M. Vilarinho, I. M. Miranda Salvado, J. L. Baptista, C. M. de Jesus & M. F. da Silva, “Characterization of seeded sol-gel lead zirconate titanate thin films” J. European Ceram. Soc., 19 1403-1407 (1999).
- Aiying Wu, I. M. Miranda Salvado, P. M. Vilarinho & J. L. Baptista, “Lead zirconate titanate prepared form different zirconium and titanium precursors by sol-gel”, J. Am. Ceram. Soc., 81(10) 2640-2644 (1998).
- Aiying Wu, P. M. Vilarinho, I. M. Miranda Salvado & J. L. Baptista, “Seeding studies in PZT thin films”, Mater Res. Bull., 33(1) 59-68 (1998).
- Aiying Wu, P. M. Vilarinho, I. M. Miranda Salvado & J. L. Baptista, “Sol-gel preparation of PZT thin films with BaTiO3 seeds”, SPIE Vol. 3175, 227-231 (1998).
- Aiying Wu, I. M. Miranda Salvado, P. M. Vilarinho & J. L. Baptista, “Processing and seeding effects on crystallization of PZT thin films from sol-gel”, J. European Ceram. Soc., 17 1443-1452 (1997).
- SHEN Qiyong, WU Aiying, SHEN Juyun, FENG Zhijian & Zhou Wenyue, “Study on Structural Factor (Y) and Photochromic Properties of Glass with Standard Refractive Index nd =1.523”, J. Inorg. Mater., 10(4) 406-410 (1995).
- WU Aiying, SHEN Juyun, GUO Changling & LU Changwei, “Effects of the Replacement of R+ with R++ in AgX Photochromic Glass on f (Ts)”, J. Inorg. Mater., 6(3) (1991).
- WU Aiying, SHEN Juyun & WANG Muzhang, “The Chromaticity of Metastable Colored Glass Containing AgX”, J. Inorg. Mater., 5(3) (1990).
- SHEN Juyun & WU Aiying, “The Influence Factors of the Temperature Coefficient of the Td Value in Photochromic Glass”, J. Non-cryst. Solids, 96 765-770 (1987).

Projects

Publications

Electrophoretic Deposition on Nonconducting Substrates: A Demonstration of the Application to Microwave Devices

Vilarinho, PM; Fu, Z; Wu, AY; Axelsson, A; Kingon, AI
2015, LANGMUIR, 31, 7, 2127-2135.

Activated Solutions Enabling Low-Temperature Processing of Functional Ferroelectric Oxides for Flexible Electronics

Bretos, I; Jimenez, R; Wu, AY; Kingon, AI; Vilarinho, PM; Calzada, ML
2014, ADVANCED MATERIALS, 26, 9, 1405-1409.

Critical Role of Suspension Media in Electrophoretic Deposition: The Example of Low Loss Dielectric BaNd2Ti5O14 Thick Films

Vilarinho, PM; Fu, Z; Wu, AY; Kingon, AI
2013, JOURNAL OF PHYSICAL CHEMISTRY B, 117, 6, 1670-1679.

Sol-gel synthesis and electrical characterization of Bi3.25La0.75Ti3O12 thin films

Wu, AY; Soares, MR; Salvado, IMM; Vilarinho, PM
2012, MATERIALS RESEARCH BULLETIN, 47, 11, 3819-3824.

Al2TeO6: Mechanism of phase formation and dielectric properties

Su, XM; Wu, AY; Vilarinho, PM
2012, SCRIPTA MATERIALIA, 67, 12, 927-930.

Nanoporous Piezo- and Ferroelectric Thin Films

Ferreira, P; Hou, RZ; Wu, AY; Willinger, MG; Vilarinho, PM; Mosa, J; Laberty-Robert, C; Boissiere, C; Grosso, D; Sanchez, C
2012, LANGMUIR, 28, 5, 2944-2949.

Magnetic Anomaly and Dielectric Tunability of (Sr,Mn)TiO3 Thin Films

Tkach, A; Okhay, O; Wu, AY; Vilarinho, PM; Bedanta, S; Shvartsman, VV; Borisov, P
2012, FERROELECTRICS, 426, 274-281.

Triethanolamine as an Additive in the Electrophoretic Deposition of TiTe3O8 Thick Films

Su, XM; Wu, AY; Vilarinho, PM
2012, ELECTROPHORETIC DEPOSITION: FUNDAMENTALS AND APPLICATIONS IV, 507, 27-34.

Protein adsorption on piezoelectric poly(L-lactic) acid thin films by scanning probe microscopy

Barroca, N; Vilarinho, PM; Daniel-da-Silva, AL; Wu, AY; Fernandes, MH; Gruverman, A
2011, APPLIED PHYSICS LETTERS, 98, 13.

Sol-gel silica hybrid biomaterials for application in biodegradation of toxic compounds

Chernev, G; Rangelova, N; Djambazki, P; Nenkova, S; Salvado, I; Fernandes, M; Wu, AY; Kabaivanova, L
2011, JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 58, 3, 619-624.

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...

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".