Tatiana Pisarenko

Brno University of Technology · Department of Physics

This article shortly describes the structure of the butterflies’ wings scales, their variations and properties. Experimental data obtained herein using an atomic force microscope (AFM) instrument sheds some light on the Coenonympha pamphilius scaly wing structure. Coenonympha pamphilus is the smallest butterfly of Satyrinae subfamily and is otherwi...

Butterflies have color vision which they utilize in the search for flowers. There are typically around six difference classes of photoreceptors with specific spectral sensitivities. This paper goes over a typical butterflies’ eyes structure as well as their properties. The experimental data obtained using an atomic force microscope was used to inve...

This paper offers a short overview of epoxy resins, encompassing their diverse characteristics, variants, chemical modifications, curing processes, and intriguing electrical properties. Epoxies, valued for their multifunctional attributes, serve as fundamental materials across industries. In the realm of dielectric strength, epoxy resins play a cru...

The rapid growth and evolution of solar panel technology have been driven by continuous advancements in materials science. This review paper provides a comprehensive overview of the diverse range of materials employed in modern solar panels, elucidating their roles, properties, and contributions to overall performance. The discussion encompasses bo...

This work focuses on the unexplored synthesis and material analysis of the composite based on nanofibers of the thermoplastic polymer called polyvinylidene fluoride (PVDF) and iron-based metal-organic framework (MOF) nanoparticles. In addition to high durability, PVDF has piezoelectric properties. When synthesized as nanofibers, it also provides a...

The aim of this work is the design, synthesis, and subsequent analysis of a novel environmentally friendly Cs3Bi2I9 perovskite. Cs3Bi2I9 is a promising material for optoelectronic applications such as solar cells and photodetectors due to its excellent light absorption properties in the visible and near-infrared regions. The paper, after successful...

The concept of the Internet of Things is capable of making a giant leap in the economy, including research in the field of computer science, network technologies, microelectronics and sensor technology. Combined with the technological developments of nanotechnology and robotics, IoT can play a central role in the industrial revolution by creating e...

Currently, there is an ever-growing interest in carbon materials with increased deformation-strength, thermophysical parameters. Due to their unique physical and chemical properties, such materials have a wide range of applications in various industries. Many prospects for the use of polymer composite materials based on polyvinylidene fluoride (PVD...

The direction of the development of the Internet of things is due to the ever-increasing need for the Internet - the communicative component for the exchange of information not only among people, but with the increase in information, receiving it from certain devices. The development of technology has led to the transition to the Internet of things...

This review summarizes the current trends and developments in the field of polyvinylidene fluoride (PVDF) for use mainly as a nanogenerator. The text covers PVDF from the first steps of solution mixing, through production, to material utilization, demonstration of results, and future perspective. Specific solvents and ratios must be selected when c...

In this paper, modern ways of digitalization of the educational process are considered and analyzed. An alternative innovative solution can be a theory of inventive problem solving (TRIZ)-a methodology, taking into account the didactic principles of education (continuity, succession, accessibility, etc.). The dynamics of innovative technologies req...

This study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process in air. Two types of fibers were produced since the collector speed ( 300 and 2000) differed as the only one processing param...

The paper specifies the electrostatic spinning process of specific polymeric materials, such as polyvinylidene fluoride (PVDF), polyamide-6 (PA6, Nylon-6) and their combination PVDF/PA6. By combining nanofibers from two different materials during the spinning process, new structures with different mechanical, chemical, and physical properties can b...

In this work, the PVDF composite, also known as polyvinylidene fluoride in the form of thin nanofibres, was created. Subsequently, a single-fibre characterization was performed, which proves its piezoelectric properties and describes its structure. Electron microscopy, atomic force microscopy and X-ray photoelectron spectroscopy were chosen as char...

The work investigates structure and properties of composite fibers created by the electrospinning method for piezoapplications. Polyvinylidene fluoride (PVDF) was used as a precursor. As an electrospining parameter, the collector speed of 300 and 2000 rpm was selected, which significantly affects the properties of nanofibers. The structure of fiber...