Název:
Electrostatic assembly of alumina nanoparticles on nanocrystalline diamond films
Autoři:
Verveniotis, Elisseos ; Kromka, Alexander ; Rezek, Bohuslav Typ dokumentu: Příspěvky z konference Konference/Akce: WDS 2011 - Annual Conference of Doctoral Students /20./, Prague (CZ), 2011-05-31 / 2011-06-03
Rok:
2011
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
atomic force microscopy (AFM); electrostatic charging; Kelvin force microscopy (KFM); nanocrystalline diamond; self-assembly Číslo projektu: CEZ:AV0Z10100521 (CEP), GD202/09/H041 (CEP), LC06040 (CEP), KAN400100701 (CEP), LC510 (CEP), GAP204/10/0212 (CEP) Poskytovatel projektu: GA ČR, GA MŠk, GA AV ČR, GA MŠk, GA ČR Zdrojový dokument: WDS'11 Proceedings of Contributed Papers: Part III: Physics, ISBN 978-80-7378-186-6
Instituce: Fyzikální ústav AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0207800