National Repository of Grey Literature 25 records found  previous11 - 20next  jump to record: Search took 0.01 seconds. 
Linear antenna microwave plasma treatment of diamond
Neykova, Neda ; Kozak, Halyna ; Kromka, Alexander ; Bryknar, Z. ; Vaněček, Milan
The presented works reports on a hydrogen termination of nano-crystalline diamond films performed at low temperature.
Electrochemistry of selected radiosenzitizer-etanidazole
Gál, Miroslav ; Híveš, J. ; Sokolová, Romana ; Hromadová, Magdaléna ; Kocábová, Jana ; Kolivoška, Viliam ; Pospíšil, Lubomír
The first electron transfer to radiosensitizer etanidazole (ETN) and ETN radical anion formation in buffered aqueous media was studied by means of voltammetric techniques and Electrochemical Impendance Spectroscopy (EIS). The heterogeneous electron transfer rate constant for the first reduction of ETN (radical anion production) k0 for the redox couple and so called E1,7 potential were calculated. The obtained values of k0 and E1,7 potential indicate that ETN compared to some other possible chemical radiosensitizers requires lower energy to accept the first electron during metabolic pathway.
Fullerene C60 in Aqueous Medium
Kocábová, Jana ; Gál, Miroslav ; Hromadová, Magdaléna ; Kavan, Ladislav ; Pospíšil, Lubomír ; Sokolová, Romana
The aqueous solution of C60 was investigated by electrochemical and spectroscopis methods such as UV-Vis, Raman, FTIR and AFM techniques. The association constants of fullerene-gamma-cyclodextrin complex and ,ethanofullerene conjugates with beta-cyclodextrins in aqueous solution were evaluated from the shifts of the formal redox potential of complexed and uncomplexed fullerene. The most suitable techniques for electrochemical characterization of fullerene derivatives proved to be the low-frequency phase-sensitive AC polarography and the steady-state voltammetry.
Plošný přenos náboje na rozhraní polypyrol-diamant
Čermák, Jan ; Rezek, Bohuslav ; Hubík, Pavel ; Mareš, Jiří J. ; Kromka, Alexander ; Fejfar, Antonín
In this study we examine in-plane hole transport in polypyrrole-diamond interface.
Lokální elektrostatické nabíjení polovodičových tenkých vrstev
Verveniotis, Elisseos ; Čermák, Jan ; Kromka, Alexander ; Rezek, Bohuslav
In this study we examine local electrostatic charging of semiconductor thin films.
Electrochemical characterization of water soluble fullerenes
Kocábová, Jana ; Gál, Miroslav ; Hromadová, Magdaléna ; Pospíšil, Lubomír
Fullere (C60) is a highly hydrophobic compound and it is considered to be insoluble in water. Different approaches were described for preparing aqueous solutions of C60. One of the possibilities is to create an inclusion complex of the C60 inside a cavity of gamma-cyclodextrin. Recently, we have shown that such complexes are capable of the electrochemical conversion of N2 to ammonium ions.
Optical properties of thin films measured by PDS
Remeš, Zdeněk
Description of the photothermal deflection (PDS) spectrometer used in the Institute of Physics of the ASCR. Applicatons include the optical absorption in thin conductive oxides and thin films solar cells.
Characterization of structural and electronic properties of organic heterostructures by scanning probe techniques
Čermák, Jan ; Rezek, Bohuslav ; Cimrová, Věra ; Hörhold, H. H. ; Ledinský, Martin ; Fejfar, Antonín
Study of morphologic, electronic and optoelectronic properties of organic heterostructures by AFM, KFM, CS-AFM and micro-Raman mapping.
Charge transport at polypyrrole diamond interface
Rezek, Bohuslav ; Čermák, Jan ; Kromka, Alexander ; Ledinský, Martin ; Kočka, Jan
Changes of surface potential and photo-current under illumination indicate exciton splitting at the polypyrrole-diamond interface and transport of holes to diamond.
A curve template for I-V characteristics of the solar cells
Fejfar, Antonín
The contribution describes a computer program for manual fitting a theoretical dependence of the current flowing through a solar cell on the voltage in a way corresponding to flexible curve templates. The template provides handles "attached" to the curve for intuitive and independent manipulation of the parameters. This makes it possible to judge the sensitivity of the fit to the individual parameters.

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