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Wrocław, Poland

At present the three basic directions of research on the development of organic photovoltaics are: (i) synthesis of new polymers and small-molecular compounds in an active layer of solar cells, (ii) modification of the architecture of solar cells and (iii) perfecting of methods of processing of' each of the layers of solar cell. The highest value of the power conversion efficiency being obtained in IEL Wrocław reaches the level of 2.4% for the bulk heterojunction polymer solar cell. Source

In the paper is presented a comparison of physical parameters of alumina template made by use of one (simplified) and two-step anodisation. The analyze was taken on the electrical parameters of anodisation circuits of both of the technologies and the visualization of surface was carried on by means of FE-SEM microscope. Source

Dybczynski W.,Instytut Elektrotechniki
Przeglad Elektrotechniczny | Year: 2011

Influence of different types of lighting, fittings, road surfaces and geometry of the lighting fitting locations was examined according to relative increase of the contrast threshold value. Source

Zylka P.,Wroclaw University of Technology | Moron L.,Instytut Elektrotechniki
Przeglad Elektrotechniczny | Year: 2010

The paper discusses current state of research related to polymeric dielectric materials in which surface displays biomorphic characteristics i.e. it imitates - desirable from scientific and technological point of view - features of living organisms or natural materials. Special attention is paid to superhydrophobic materials displaying "lotus effect". The concise literature review is illustrated with results of experiments aimed at obtaining (by means of acrylic model replica method) HTV silicone rubber with surface displaying "lotus effect". Source

This paper presents the results of calculations that demonstrate the possibility of using hybrid optimization method (with variable structure) for determining the approximate solutions to NP-hard problems. The Travelling Salesman Problem (TSP) is a classic combinatorial optimization subject, which has found widespread use in practice. Simple in definition, have remained hard to solve for many years. Not only an efficient solution would yield benefits in a substantial amount of routing problems, but it would also affect planning and logistics in a positive way. © 2005, Wydawnictwo SIGMA - N O T Sp. z o.o. All right reserved. Source

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