Národní úložiště šedé literatury Nalezeno 13 záznamů.  1 - 10další  přejít na záznam: Hledání trvalo 0.00 vteřin. 
Intrinsic and boron-doped diamond microstructured for electrochemical batteries
Kromka, Alexander ; Babchenko, Oleg ; Rezek, Bohuslav ; Ižák, Tibor ; Libertínová, Jitka ; Hruška, Karel ; Nyholm, L. ; de Oliviera Jorge, E.
Diamond - widest electrochemical window, excellentfor covalent binding of molecules, effective csarge transfer.
Nanocrystalline diamond SG-FET: role of grain boundaries and cell culture process
Krátká, Marie ; Kromka, Alexander ; Ukraintsev, Egor ; Brož, A. ; Kalbáčová, M. ; Rezek, Bohuslav
Fetal bovine serum layer morphology and thickness is not changing (significantly). KFM measurement show that surface potential difference between diamond and gold reduces after each process. That result indiactes changes in surface termination. FET shifts possibly related with change of diamond itself.
AFM study of FBS, BSA, Fn proteins adsorbed on H-/O-diamond
Ukraintsev, Egor ; Kromka, Alexander ; Rezek, Bohuslav
Cell growth indicates that Fibronectin is behind micro-array formation. Using AFM we measured conformations of particular proteins from Fetal bovine serum in solution and in air. AFM data are not convincing.
Surface potentials of diamond nanoparticles of various size and termination
Arnault, J.-C. ; Girard, H. ; Petit, T. ; Rezek, Bohuslav
Diamant nanoparticle potential similar as function of surface treatment. Diamant nanoparticle potential is similar on Au and Si substrate. KFM potential depends on particle/cluster size.
High resolution ATR FTIR spectroscopy of hydrogenated diamond nanoparticles using NCD-coated prism
Remeš, Zdeněk ; Kozak, Halyna ; Rezek, Bohuslav ; Babchenko, Oleg ; Kromka, Alexander ; Girard, H. ; Petit, T. ; Arnault, J. ; Bergonzo, P.
Crucial part of successful ATR - linear antenna CVD NCD. ATR IR spectroscopy compared to transmittance FTIR spectroscopy. IR spectra of diamant nanoparticles adsorbed on NCD surface. Advances of ATR FTIR - higher sensitivity, better resolution, reproducibility.
Ultrafast laser spectroscopy of nanocrystalline films: effect of ambient atmosphere and illumination
Malý, P. ; Dzurňák, B. ; Trojánek, F. ; Preclíková, J. ; Kromka, Alexander ; Rezek, Bohuslav
Role of NCD structure and surface termination on light induced changes of sub-gap states covers study of H- and O-terminated samples, samples of different structure and sp2 ratio, new approach of data analysis by power-law function.
Gas sensing properties of IDT devices employing H-terminated NCD films and their nano-structures
Kromka, Alexander ; Davydova, Marina ; Babchenko, Oleg ; Rezek, Bohuslav ; Stuchlík, Jiří
Embedded metal electrode in IDTs (novel concept). Surface conductivity, H-termination of is crucial. Surface conductivity sensitive to testing gas (oxidizing/reducing). Largest surface conductivity for fosgene. Temperature experiments, optimal temperature.
Optically and electronically active diamond-silicon photonic structures: state and outlooks
Ondič, Lukáš ; Dohnalová, Kateřina ; Kůsová, Kateřina ; Cibulka, Ondřej ; Ledinský, Martin ; Babchenko, Oleg ; Kromka, Alexander ; Rezek, Bohuslav ; Pelant, Ivan
We have prepared the photonic crystal at the top of the nanocrystalline diamond layer. We have obtained the effective extraction of diamond intrinsic photoluminescence via leaky modes. We have shown the simulation of optical gain enhancement in the photonic crystal.
Surface-related 2D conductivity of nanocrystalline diamond in-plane nanowires
Rezek, Bohuslav ; Babchenko, Oleg ; Vetushka, Aliaksi ; Verveniotis, Elisseos ; Ledinský, Martin ; Fejfar, Antonín ; Kromka, Alexander
Diamond is an attractive material for nanoelectronics, biological interfaces and electrical transducers. Small device dimensions are highly demanded for higher sensitivity, parallelism, remote sensing and reduced costs. Recently we have demonstrated that directly grown nanocrystalline diamond micro-channels (down to 5 um widths) are feasible and fully operational as field-effect transistors using H-terminated surface conductivity.

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