Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Alexander Tkach"'
Autor:
Alexander Tkach, Olena Okhay
Publikováno v:
Nanomaterials, Vol 13, Iss 22, p 2912 (2023)
In recent years, the worldwide research in the field of energy harvesting and storage has focused on the development of clean and sustainable methods that can respond to the rising energy demands of humankind [...]
Externí odkaz:
https://doaj.org/article/5d19ed400ded4abfb6b8362a2c2ab1fb
Autor:
Olena Okhay, Alexander Tkach
Publikováno v:
Nanomaterials, Vol 13, Iss 6, p 988 (2023)
Harvesting ambient mechanical energy at the nanometric scale holds great promise for powering small electronics and achieving self-powered electronic devices. The current review is focused on kinetic energy harvesters, particularly on flexible piezoe
Externí odkaz:
https://doaj.org/article/44c7fe4f1a7b442693aead41b89f8681
Autor:
Olena Okhay, Alexander Tkach
Publikováno v:
Batteries, Vol 8, Iss 10, p 191 (2022)
Both polyaniline (PANI) and graphene are widely studied for their application as capacitive electrodes in energy storage devices. However, although PANI can be easy synthesized, is of low cost and has a higher specific capacitance than graphene, pris
Externí odkaz:
https://doaj.org/article/e3048f47a7104f25aa3946d632260199
Publikováno v:
Materials, Vol 15, Iss 19, p 6603 (2022)
Alternative sintering technologies promise to overcome issues associated with conventional ceramic sintering such as high thermal budgets and CO2 footprint. The sintering process becomes even more relevant for alkali-based piezoelectric ceramics such
Externí odkaz:
https://doaj.org/article/6e881a9e543e477988ca231d1d19ea92
Autor:
Olena Okhay, Alexander Tkach
Publikováno v:
Nanomaterials, Vol 12, Iss 15, p 2531 (2022)
The current development of clean and high efficiency energy sources such as solar or wind energy sources has to be supported by the design and fabrication of energy storage systems. Electrochemical capacitors (or supercapacitors (SCs)) are promising
Externí odkaz:
https://doaj.org/article/dbf75798903f4076a06e90a63aa04291
Publikováno v:
Materials & Design, Vol 160, Iss , Pp 1322-1334 (2018)
Obtaining high quality BiFeO3 thin-films by low-cost scalable chemical solution deposition (CSD) is still challenging and currently relevant. Here we provide a comprehensive set of experimental evidences on the role of metallic (Pt) and oxide (IrO2 a
Externí odkaz:
https://doaj.org/article/87e03528d374450dada8f49a78bc649b
Publikováno v:
C, Vol 8, Iss 1, p 12 (2022)
Electrode materials for electrochemical capacitors or supercapacitors (SCs) are widely studied, as they are needed for the development of energy storage devices in electrical vehicles and flexible electronics. In the current work, a self-supported pa
Externí odkaz:
https://doaj.org/article/fa57949793a04f2ab3dceded2acfb9c3
Publikováno v:
Materials, Vol 15, Iss 2, p 467 (2022)
The vital role of high-quality-factor (Q) high-frequency (f) dielectric resonators in the growing microwave telecommunication, satellite broadcasting and intelligent transport systems has long motivated the search for new, small size, and lightweight
Externí odkaz:
https://doaj.org/article/5c6d4536631a4eb596a1a44ef461027f
Publikováno v:
Materials, Vol 15, Iss 3, p 859 (2022)
The voltage dependence of the dielectric permittivity ε′ and the low dielectric loss tanδ of incipient ferroelectrics have drawn vast attention to the use of these materials for the development of tuning elements in electronics and telecommunicat
Externí odkaz:
https://doaj.org/article/8374d1cd641841eda53534d9c53e296c
Publikováno v:
Materials, Vol 14, Iss 21, p 6414 (2021)
Strontium titanate-based materials with ferroelectric or relaxor-like properties have drawn vast attention as polar dielectrics for electronics and telecommunications. Here, we study the lattice dynamics in sol–gel-derived Sr1−1.5xBixTiO3 thin fi
Externí odkaz:
https://doaj.org/article/b0f9fe9521094241b39438fd0323bac2