Temat: 47.61.Cb - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Mobility of Hematite Submicron Particles in Water Solutions of Sugar
Autorzy:: Fornal, P.
Stanek, J.
Powiązania:: https://bibliotekanauki.pl/articles/1811893.pdf
Data publikacji:: 2008-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 05.40.Jc
47.57.ef
47.57.J-
47.61.Cb
Opis:: The mobility of the 100 nm $Fe_2O_3$ particles in dense water solutions of sugar (sucrose) was determined from the analysis of the resonance absorption line shape of the Mössbauer spectra recorded in the -5°C to 40°C temperature range for different sugar concentrations. The discrepancy between the experimental data and the prediction of the classical theory of Brownian movement are interpreted in the term of the short observation time and the interaction between the solid particles in fluids, which extends in water up to 300 nm. The sedimentation process in the studied colloids was observed.
Źródło:: Acta Physica Polonica A; 2008, 114, 6; 1667-1673
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Preparation and Characterization of Magnetic Nanoparticles
Autorzy:: Khmara, I.
Kubovcikova, M.
Koneracka, M.
Kalska-Szostko, B.
Zavisova, V.
Antal, I.
Rajnak, M.
Dankova, Z.
Kavecansky, V.
Omastova, M.
Kopcansky, P.
Powiązania:: https://bibliotekanauki.pl/articles/1030437.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 47.65.Cb
61.05.Qr
61.05.cp
Opis:: The magnetic nanoparticles with core diameter 10 nm were modified by poly-L-lysine to bind antibody for cancer cell detection. Prepared biocompatible magnetic fluid (MFPLL) was characterized by dynamic light scattering method to obtain the particle size distribution. The microstructure of the MNPs and MFPLL samples were studied by transmission electron microscopy, X-ray diffraction and Mössbauer spectroscopy. Magnetic properties of the samples were measured by SQUID magnetometer and superparamagnetic behaviour of the samples was confirmed.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 704-706
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Positron Annihilation in Magnetite Nanopowders Prepared by Co-Precipitation Method
Autorzy:: Durak, K.
Wiertel, M.
Surowiec, Z.
Miaskowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/1033944.pdf
Data publikacji:: 2017-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.07.Wx
47.65.Cb
78.70.Bj
61.72.J-
61.72.Mm
68.37.Hk
Opis:: Nanosized iron oxide powders are materials considered with regard to its application in medical therapy called hyperthermia. Magnetite nanopowders with crystallite size varying from 6.6 to 11.8 nm have been prepared by the co-precipitation method. In this study a change of a crystallite size is driven mainly by varying of initial pH of water ammonia solution in which a process of magnetite precipitation runs. Crystallographic structures and phase composition obtained samples and the size of magnetite nanoparticles were determined by X-ray diffraction method. Positron lifetime spectroscopy has been used to assess defectiveness of microstructure. Experimental positron annihilation spectra were successfully resolved into three lifetime components. It appears that from point of view of microstructure the defects concentrations in studied nanopowder samples are very high which causes a saturation of positron trapping.
Źródło:: Acta Physica Polonica A; 2017, 132, 5; 1593-1597
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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