inż. Cezary Dziekoński

Zakład Teorii Ośrodków Ciągłych i Nanostruktur (ZTOCiN)
Pracownia Fizyki Polimerów (PFP)
stanowisko: laborant
telefon: (+48) 22 826 12 81 wew.: 107
pokój: 237
e-mail: cdziekon

Ostatnie publikacje
1.Dziekoński C., Dera W., Jarząbek D.M., Method for lateral force calibration in atomic force microscope using MEMS microforce sensor, ULTRAMICROSCOPY, ISSN: 0304-3991, DOI: 10.1016/j.ultramic.2017.06.012, Vol.182, pp.1-9, 2017

Streszczenie:

In this paper we present a simple and direct method for the lateral force calibration constant determination. Our procedure does not require any knowledge about material or geometrical parameters of an investigated cantilever. We apply a commercially available microforce sensor with advanced electronics for direct measurement of the friction force applied by the cantilever's tip to a flat surface of the microforce sensor measuring beam. Due to the third law of dynamics, the friction force of the equal value tilts the AFM cantilever. Therefore, torsional (lateral force) signal is compared with the signal from the microforce sensor and the lateral force calibration constant is determined. The method is easy to perform and could be widely used for the lateral force calibration constant determination in many types of atomic force microscopes.

Słowa kluczowe:

A precise and direct method for lateral force calibration, Inaccuracy equal to approximately 2%, Wedge method is proven to give inaccurate results

Afiliacje autorów:

Dziekoński C.-IPPT PAN
Dera W.-IPPT PAN
Jarząbek D.M.-IPPT PAN
50p.
2.Jarząbek D.M., Milczarek M., Wojciechowski T., Dziekoński C., Chmielewski M., The effect of metal coatings on the interfacial bonding strength of ceramics to copper in sintered Cu-SiC composites, CERAMICS INTERNATIONAL, ISSN: 0272-8842, DOI: 10.1016/j.ceramint.2017.01.056, pp.1-9, 2017

Streszczenie:

Cu-SiC composites are very promising materials which have high thermal and electrical conductivity and may find many applications. Unfortunately, the main disadvantage of these materials is the dissolution of silicon in copper at elevated temperature, which significantly reduces their properties. In order to overcome this problem particles can be coated with a protective material before sintering. In this paper– the influence of three different metallic coatings on bonding strength were investigated. SiC particles were coated with tungsten, chromium or titanium. As reference a material with uncoated particles was prepared. The experiments were carried out with the use of microtensile tester. The highest increase in strength was observed in the case of chromium coating. On the other hand, the titanium coating, which was of very poor quality, decrease the bonding strength in comparison with uncoated particles. Furthermore, scanning electron and optical microscopes were used to determine the mechanism of debonding.

Słowa kluczowe:

Interfacial bonding strength, Metal matrix composites, Tensile strength, Silicon carbide particles

Afiliacje autorów:

Jarząbek D.M.-IPPT PAN
Milczarek M.-Warsaw University of Technology (PL)
Wojciechowski T.-Institute of Physics, Polish Academy of Sciences (PL)
Dziekoński C.-IPPT PAN
Chmielewski M.-Institute of Electronic Materials Technology (PL)
40p.

Abstrakty konferencyjne
1.Frąś L.J., Jarząbek D., Dziekoński C., Pęcherski R.B., Viscoplastic deformation of magnethoreological solids, SolMech 2016, 40th Solid Mechanics Conference, 2016-08-29/09-02, Warszawa (PL), No.P244, pp.1-2, 2016

Streszczenie:

The microsized (~10µm) ferroelements build the structure of magenthoreological (MR) fluid. This two phase material in neutral state behaves as a fluid but in magnetic field becomes a solid and has properties of elasto-viscoplastic material. This is due to the skeleton made by ferrolements connected into braids. The aim of the paper is to identify the physical mechanisms of deformation of such a structure with use of own set up for in situ microscopic observations.

Słowa kluczowe:

magnethoreological solids, viscoplasticity, ferroelements, compression test, shear banding

Afiliacje autorów:

Frąś L.J.-IPPT PAN
Jarząbek D.-IPPT PAN
Dziekoński C.-IPPT PAN
Pęcherski R.B.-IPPT PAN

Patenty
Numer/data zgłoszenia patentowego
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Twórca / twórcy
Tytuł
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pdf
422789
2017-09-08
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Kujawska T., Dera W., Dziekoński C.
Bimodalne urządzenie ultradźwiękowe do nieinwazyjnego niszczenia litych guzów nowotworowych u małych zwierząt
PL, Instytut Podstawowych Problemów Techniki PAN
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419669
2016-12-14
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Dera W., Dziekoński C., Jarząbek D.
Metoda kalibracji siły bocznej w mikroskopie AFM i urządzenie do kalibracji siły bocznej w mikroskopie AFM.
PL, Instytut Podstawowych Problemów Techniki PAN
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419571
2016-11-23
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Jarząbek D., Dera W., Dziekoński C.
Urządzenie do pomiaru lepkości cienkich warstw materiałów lepkosprężystych
PL, Instytut Podstawowych Problemów Techniki PAN
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