Autor: Bernasik, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Odtwarzanie wzorów polimerowych przez adsorbujące białka: analiza porównawcza obrazów AFM i obrazów fluorescencyjnych za pomocą geometrii całkowej
Polymer patterns replicated by adsorbing proteins: comparison of AFM and fluorescence images with integral geometry analysis
Autorzy:: Zemła, J.
Lekka, M.
Raczkowska, M.
Bernasik, A.
Rysz, J.
Budkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/285254.pdf
Data publikacji:: 2010
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: polimery
biomateriały
geometria całkowa
polymers
biomaterials
integral geometry
Źródło:: Engineering of Biomaterials; 2010, 13, no. 99-101; 61-62
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Structures in Multicomponent Polymer Films: Their Formation, Observation and Applications in Electronics and Biotechnology
Autorzy:: Budkowski, A.
Bernasik, A.
Moons, E.
Lekka, M.
Zemła, J.
Jaczewska, J.
Haberko, J.
Raczkowska, J.
Rysz, J.
Awsiuk, K.
Powiązania:: https://bibliotekanauki.pl/articles/1808304.pdf
Data publikacji:: 2009-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.16.Dn
61.25.H-
68.37.-d
82.80.Ms
85.60.-q
85.65.+h
82.37.Rs
Opis:: Several strategies to form multicomponent films of functional polymers, with micron, submicron and nanometer structures, intended for plastic electronics and biotechnology are presented. These approaches are based on film deposition from polymer solution onto a rotating substrate (spin-casting), a method implemented already on manufacturing lines. Film structures are determined with compositional (nanometer) depth profiling and (submicron) imaging modes of dynamic secondary ion mass spectrometry, near-field scanning optical microscopy (with submicron resolution) and scanning probe microscopy (revealing nanometer features). Self-organization of spin-cast polymer mixtures is discussed in detail, since it offers a one-step process to deposit and align simultaneously domains, rich in different polymers, forming various device elements: (i) Surface segregation drives self-stratification of nanometer lamellae for solar cells and anisotropic conductors. (ii) Cohesion energy density controls morphological transition from lamellar (optimal for encapsulated transistors) to lateral structures (suggested for light emitting diodes with variable color). (iii) Selective adhesion to substrate microtemplates, patterned chemically, orders lateral structures for plastic circuitries. (iv) Submicron imprints of water droplets (breath figures) decorate selectively micron-sized domains, and can be used in devices with hierarchic structure. In addition, selective protein adsorption to regular polymer micropatterns, formed with soft lithography after spin-casting, suggests applications in protein chip technology. An approach to reduce lateral blend film structures to submicron scale is also presented, based on (annealed) films of multicomponent nanoparticles.
Źródło:: Acta Physica Polonica A; 2009, 115, 2; 435-440
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The influence of sterilization on properties of polyurethane/polylactide blend
Autorzy:: Bednarz, P.
Bernasik, A.
Laska, J.
Powiązania:: https://bibliotekanauki.pl/articles/93114.pdf
Data publikacji:: 2018
Wydawca:: Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:: sterilization
surface
biodegradable polymer
topography
morphology
sterylizacja
powierzchnia
biodegradowalny polimer
topografia
morfologia
Opis:: The biodegradable polyurethane/polylactide blend was treated with low temperature hydrogen peroxide plasma, ethylene oxide and immersing in ethanol combined with ultraviolet radiation. The samples sterilized by hydrogen peroxide and ethylene oxide stood practically unaffected, while UV/EtOH caused distinct changes in their mechanical properties. For example the significant reduction of tensile strength occurred, elongation at break became twice lower, while the Young’s modulus increased by 23%. The XPS measurements showed that after all types of treatment atomic carbon and nitrogen concentrations in the surface layer was slightly lower than in the bulk. Instead the surface layer was more enriched with oxygen. Ethylene oxide sterilization caused that both surfaces became more hydrophobic i.e. the contact angle increased about 15% for the top surface and 8% for the bottom surface, respectively. Sterilization with ethanol and UV radiation changed the nature of surface into more hydrophilic, the contact angle of the top surface was reduced about 6% and the bottom about 24%. The FT-IR spectra of all sterilized samples were recorded and discussed. From all used sterilization methods only hydrogen peroxide plasma is fully suitable for biodegradable PU/PLA blend.
Źródło:: Science, Technology and Innovation; 2018, 2, 1; 13-18
2544-9125
Pojawia się w:: Science, Technology and Innovation
Dostawca treści:: Biblioteka Nauki

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