Oleksandr Tkach
  Investigador Auxiliar  
   
  telefone: 234370235  
  extensão: 22911  
  e-mail: atkach@ua.pt  
  departamento: Engenharia de Materiais e Cerâmica  
  gabinete: 9.2.18  
   
  grupo: 2 - nanoestruturas e cerâmicos ferróicos multifuncionais
 
  linha: 1 - tecnologias da informação e comunicação
 		 
  url directo: https://www.ciceco.ua.pt/oleksandrtkach  
   
Últimas Notícias


orientações científicas em curso


Projectos
Group2 Icon Additive Manufacturing for Smart Plastics (AM4SP)
Group5 Icon Group2 Icon Group0 Icon BioMEMs Avançados para Engenharia de Tecidos: Aplicações em Tecidos Duros (BioMEMs)
Group2 Icon Materiais flexíveis piezoelétricos de alto desempenho preparados utilizando grafite porosa organizada para sensores e geração de energia (PIEZOFLEX)
Group3 Icon Group2 Icon Multiferroicos e magnetoeléctricos para spintrónica: barreiras e interfaces (PTDC/CTM/099415/2008)
Group2 Icon Multifunctional all-oxide heterostructures for electronic applications (IF/00602/2013/CP1162/CT0015)


publicações
Flexible Piezoelectric Chitosan and Barium Titanate Biocomposite Films for Sensor Applications
Sierra, DLG; Bdikin, I; Tkach, A; Vilarinho, PM; Nunes, C; Ferreira, P
2021, EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2021, 9, 792-803.
CICECO Authorship
Impact of Graphene or Reduced Graphene Oxide on Performance of Thermoelectric Composites
Okhay, O; Tkach, A
2021, C-JOURNAL OF CARBON RESEARCH, 7, 2,
CICECO Authorship
Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour
Okhay, O; Tkach, A
2021, NANOMATERIALS, 11, 5,
CICECO Authorship
Dielectric Relaxation, Local Structure and Lattice Dynamics in Mn-Doped Potassium Tantalate Ceramics
Tkach, A; Almeida, A; Levin, I; Woicik, JC; Vilarinho, PM
2021, MATERIALS, 14, 16,
CICECO Authorship
Electrostatic Charges of Abrasive Powders: The Role of Particle Size and Humidity
Tkach, A; Garcez, M; Vilarinho, PM
2021, COATINGS, 11, 12,
CICECO Authorship
Dielectric Response of KTaO3 Single Crystals Weakly Co-Doped with Li and Mn
Tkach, A; Zlotnik, S; Vilarinho, PM
2021, CRYSTALS, 11, 10,
CICECO Authorship
Comment on Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiency
Tkach, A; Okhay, O
2021, JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 65, 151-153.
CICECO Authorship
Comment on Point defect structure of La-doped SrTiO3 ceramics with colossal permittivity
Tkach, A; Okhay, O
2021, SCRIPTA MATERIALIA, 190, 38-39.
CICECO Authorship
Polar Phonon Behaviour in Polycrystalline Bi-Doped Strontium Titanate Thin Films
Tkach, A; Okhay, O; Nuzhnyy, D; Petzelt, J; Vilarinho, PM
2021, MATERIALS, 14, 21,
CICECO Authorship
Comment on Giant dielectric response in (Nb plus Zn) co-doped strontium titanate ceramics tailored by atmosphere
Tkach, A; Okhay, O
2020, SCRIPTA MATERIALIA, 185, 19-20.
CICECO Authorship
Long term durability of solid-state supercapacitor based on reduced graphene oxide aerogel and carbon nanotubes composite electrodes
Okhay, O; Tkach, A; Staiti, P; Lufrano, F
2020, ELECTROCHIMICA ACTA, 353,
CICECO Authorship
Spark plasma texturing: A strategy to enhance the electro-mechanical properties of lead-free potassium sodium niobate ceramics
Pinho, R; Tkach, A; Zlotnik, S; Costa, ME; Noudem, J; Reaney, IM; Vilarinho, PM
2020, APPLIED MATERIALS TODAY, 19,
CICECO Authorship
Energy storage of supercapacitor electrodes on carbon cloth enhanced by graphene oxide aerogel reducing conditions
Olena Okhay, Alexander Tkach, Maria J. Hortiguela Gallo, Gonzalo Otero-Irurueta, Sergey Mikhalev, Pietro Staiti, Francesco Lufrano
2020, JOURNAL OF ENERGY STORAGE, 32,
CICECO Authorship
SrTiO3-Glimpses of an Inexhaustible Source of Novel Solid State Phenomena
Wolfgang Kleemann , Jan Dec, Alexander Tkach, Paula M. Vilarinho
2020, CONDENSED MATTER, 5, 4,
CICECO Authorship
New Insights into the Effect of Nonstoichiometry on the Electric Response of Strontium Titanate Ceramics
Amaral, L; Tkach, A; Vilarinho, PM; Senos, AMR
2019, JOURNAL OF PHYSICAL CHEMISTRY C, 123, 1, 710-718.
CICECO Authorship
Antiferrodistortive phase transition in doped strontium titanate ceramics: the role of the perovskite lattice vacancies
Alexander Tkach
In J. Clabel and V. Rivera (Eds.), Perovskite Ceramics
2022, 77-98. Elsevier.
CICECO Authorship
Nonstoichiometry Role on the Properties of Quantum-Paraelectric Ceramics
Tkach, A; Vilarinho, PM
In Tanasescu, S. (Eds.), Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides
2020, London: IntechOpen.
CICECO Authorship
Strain effect on the properties of polar dielectric thin films
Tkach, A; Okhay, O; Santos, A; Zlotnik, S; Serrazina, R; Vilarinho, PM; Costa, ME
In Alexander Pogrebnjak and Valentin Novosad (Eds.), Advances in Thin Films, Nanostructured Materials, and Coatings
2019, 331-342. Springer Nature Singapore Pte Ltd.
CICECO Authorship
Sr/Ti ratio in strontium titanate ceramics: designing the microstructure, envisaging the properties
Amaral, L; Tkach, A; Vilarinho, PM; Senos, AMR
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 71-100. New York: Nova Science Publishers, Inc.
CICECO Authorship
Effect of bismuth doping on the properties of strontium titanate thin films
Okhay, O; Tkach, A; Vilarinho, PM
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 209-258. New York: Nova Science Publishers, Inc.
CICECO Authorship
Enhancement of thermoelectric performance in SrTiO3-based ceramics by processing conditions
Tkach, A; Resende, J; Diaz-Chao, P; Guilmeau, E; Costa, ME; Vilarinho, PM
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 297-322. New York: Nova Science Publishers, Inc.
CICECO Authorship
Functional Tantalum-based Oxides: From the Structure to the Applications
S. Zlotnik, A. Tkach, P. M. Vilarinho
In Ashutosh Tiwari, Rosario A. Gerhardt andMagdalena Szutkowska (Eds.), Advanced Ceramic Materials
2016, 337-283. John Wiley & Sons, Inc.
CICECO Authorship

 
Apoio

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