MATERIALS SCIENCE AND ENERGY FRACTAL NATURE NEW FRONTIERS

Authors

  • Vojislav V. Mitić Faculty of Electronic Engineering, University of Niš, Aleksandra Medvedeva 16, Niš, Serbia Institute of Technical Sciences of the Serbian Academy of Sciences and Arts
  • Hans-Jörg Fecht Institute of Micro and Nanomaterials University of Ulm, 89081 Ulm, Germany
  • Ljubiša M. Kocić Faculty of Electronic Engineering, University of Niš, Aleksandra Medvedeva 16, Niš, Serbia

DOI:

https://doi.org/10.7251/cm.v2i6.4076

Abstract

The modern material science faces very important priorities of the future new frontiers which open new directions within higher and deeper structure knowledge even down to nano and due to the lack of energy, towards new and alternative energy sources. For example, in our up to date research we have recognized that BaTiO3 and other ceramics have fractal configuration nature based on three different phenomena. First, ceramic grains have fractal shape looking as a contour in cross section or as a surface. Second, there is the so-called “negative space” made of pores and inter-granular space. Being extremely complex, the pore space plays an important role in microelectronics, micro-capacity, PTC, piezoelectric and other phenomena. Third, there is a Brownian process of fractal motions inside the material during and after sintering in the form of micro-particles flow: ions, atoms and electrons. Here we met an exciting task of the Coble model, with already extended and generalized geometries. These triple factors, in combination, make the microelectronic environment of very peculiar electro-static/dynamic combination. The stress is here set on inter-granular micro-capacity and super micro-capacitors in function of higher energy harvesting and energy storage. An attention is paid to components affecting overall impedances distribution. Con­struc­tive fractal theory allows recognizing micro-capacitors with fractal electrodes. The method is based on the iterative process of interpolation which is compatible with the model of grains itself. Inter-granular permeability is taken as a function of temperature as fundamental thermodynamic parameter.

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Published

2017-12-12