Electrostatic assembly of alumina nanoparticles on nanocrystalline diamond films

0375024 - FZÚ 2012 RIV CZ eng C - Conference Paper (international conference)
Verveniotis, Elisseos - Kromka, Alexander - Rezek, Bohuslav
Electrostatic assembly of alumina nanoparticles on nanocrystalline diamond films.
WDS'11 Proceedings of Contributed Papers: Part III: Physics. Praha: MATFYZPRESS, 2011 - (Šafránková, J.; Pavlů, J.), s. 93-98. ISBN 978-80-7378-186-6.
[WDS 2011 - Annual Conference of Doctoral Students /20./. Prague (CZ), 31.05.2011-03.06.2011]
R&D Projects: GA ČR GD202/09/H041; GA MŠMT(CZ) LC06040; GA AV ČR KAN400100701; GA MŠMT LC510; GA ČR GAP204/10/0212
Institutional research plan: CEZ:AV0Z10100521
Keywords : atomic force microscopy (AFM) * Kelvin force microscopy (KFM) * electrostatic charging * self-assembly * nanocrystalline diamond
Subject RIV: BM - Solid Matter Physics ; Magnetism

We apply atomic force microscope for local electrostatic charging of oxygen-terminated nanocrystalline diamond (NCD) thin films deposited on silicon, to induce electrostatically driven self-assembly of colloidal alumina nanoparticles into micro-patterns. The NCD films have sub-100 nm thickness and 60% relative sp2 phase content. We characterize charge contrast and stability in air, fluorocarbon oil and water by Kelvin force microscopy. We discuss factors influencing the charging process and demonstrate that the contrast of more than ± 1 V is needed to induce selfassembly of the nanoparticles via coulombic and polarization forces.
Permanent Link: http://hdl.handle.net/11104/0207800