Autor: Nogala, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fabrication of electrochemical nanoelectrode for sensor application Rusing focused ion beam technology
Autorzy:: Łaszcz, A.
Nogala, W.
Czerwinski, A.
Ratajczak, J.
Kątcki, J.
Powiązania:: https://bibliotekanauki.pl/articles/778764.pdf
Data publikacji:: 2014
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: FIB nanotechnology
nanosensor
electrochemistry
Opis:: The capabilities and applications of the focused ion beam (FIB) technology for detection of an electrochemical signal in nanoscale area are shown. The FIB system, enabling continuous micro- and nanofabrication within only one equipment unit, was used to produce a prototype of electrochemical nanometer-sized electrode for sensor application. Voltammetric study of electrochemically active compound (ferrocenemethanol) revealed the diffusion limiting current (12 pA), corresponding to a disc (planar) nanoelectrode with about 70 nm diameter of contact area. This size is in a good accordance with the designed contact-area (50 nm × 100 nm for width × thickness) of the FIB-produced nanoelectrode. It confi rms that produced nanoelectrode is working properly in liquid solution and may enable correct measurements in nanometer-sized regions.
Źródło:: Polish Journal of Chemical Technology; 2014, 16, 3; 40-44
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Charge Orderings and Phase Separations in Itinerant Fermion Systems at Half Filling
Autorzy:: Czart, W.
Grzybowski, P.
Nogala, M.
Robaszkiewicz, S.
Powiązania:: https://bibliotekanauki.pl/articles/1426750.pdf
Data publikacji:: 2012-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.10.Fd
71.30.+h
71.45.Lr
64.75.Gh
Opis:: We analyse the ground state phase diagrams of the charge orderings in narrow band materials using two effective models: (1) the spinless fermion model (t - W) with repulsive intersite interaction ($W_{ij}$ > 0) and (2) the molecular crystal model with the coupling of electrons to intramolecular (crystal field) vibrations. We present results for the case of half filled bands for d = 2 square lattice. The calculations are performed within the (broken symmetry) Hartree-Fock approximation. The study takes into consideration the effects of frustrating next-nearest-neighbour hopping $(t_2)$ on the charge ordered states in these systems. We focus on the two cases: (i) homogeneous phases and phase separations involving checkerboard charge ordering with the nesting vector Q= (π,π) only and (ii) homogeneous phases and phase separations involving two types of charge ordering: (a) checkerboard charge ordering with the nesting vector Q = (π,π), and (b) collinear (CL) charge ordering with Q = (0,π) or Q = (π,0).
Źródło:: Acta Physica Polonica A; 2012, 121, 5-6; 1042-1044
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effects of Frustrating Hopping on Charge Ordered States in Itinerant Fermion Systems for Arbitrary Concentration in 2D Lattice
Autorzy:: Czart, W.
Grzybowski, P.
Nogala, M.
Robaszkiewicz, S.
Powiązania:: https://bibliotekanauki.pl/articles/1431325.pdf
Data publikacji:: 2012-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.10.Fd
71.30.+h
71.45.Lr
64.75.Gh
Opis:: There is ongoing, intense, research in the field of electron charge orderings (CO) and charge density waves phenomena, due to experimental discovery of such phases in numerous important compounds. The aim of this work is to extend recent advances in the field by studying two simple effective paradigmatic models used to describe CO in narrow band materials i.e. (i) a model of correlated electrons: the so-called t-W model of spinless fermions with repulsive interaction W and (ii) the molecular crystal model with the coupling of electrons to intramolecular (crystal field) vibrations in the static limit. The finite temperature phase diagrams are evaluated at arbitrary carriers concentration for several representative cases. Our calculations are performed within the (broken symmetry) HFA for d=2 square lattice and arbitrary carriers concentration. In this contribution we focus on the effects of next-nearest-neighbor hopping on the CO states in these systems and the problem of phase separations involving checkerboard CO with the nesting vector Q=(π,π). The results we show here are an extension of our previous work on the subject.
Źródło:: Acta Physica Polonica A; 2012, 121, 4; 828-831
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Stabilizacja oleju rzepakowego przy wykorzystaniu naturalnych przeciwutleniaczy
Stabilization of the rapeseed oil by application of natural antioxidants
Autorzy:: Korczak, J.
Janitz, W.
Hes, M.
Nogala-Kalucka, M.
Gogolewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/833897.pdf
Data publikacji:: 1999
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Źródło:: Rośliny Oleiste - Oilseed Crops; 1999, 20, 2
1233-8273
Pojawia się w:: Rośliny Oleiste - Oilseed Crops
Dostawca treści:: Biblioteka Nauki

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