Temat: 61.25.H- - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Microstructure and Dynamics of Magnetic Iron Nanoparticles Aggregates in Protein Gels
Autorzy:: Konik, K.
Fornal, P.
Okła, D.
Stanek, J.
Powiązania:: https://bibliotekanauki.pl/articles/1490101.pdf
Data publikacji:: 2012-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.75.Jn
83.60.Np
61.25.H-
82.70.Gg
Opis:: The 60 nm metallic iron nanoparticles and its aggregates in gelatine gel were studied by means of optical microscopy, X-ray microtomography, atomic force scanning microscopy and the Mössbauer spectroscopy. The isolated nanoparticles in gel exhibit fast bounded diffusion described by Brownian movement. In the external magnetic field these magnetic particles form spectacular linear aggregates whose local dynamical and magnetic properties were determined from the Mössbauer spectra.
Źródło:: Acta Physica Polonica A; 2012, 121, 2; 457-463
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
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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