Electrical potentials of diamond nanoparticles with different surface terminations evaluated by Kelvin probe force microscopy

0390555 - FZÚ 2013 FR eng A - Abstract
Stehlík, Štěpán - Rezek, Bohuslav - Kromka, Alexander - Petit, T. - Girard, H.A. - Arnault, J.-C.
Electrical potentials of diamond nanoparticles with different surface terminations evaluated by Kelvin probe force microscopy.
E-MRS 2012 Spring Meeting, Symposium V Laser materials processing for micro and nano applications. Strasbourg: European Materials Research Society, 2012 - (Dusastre, V.)
[E-MRS 2012 Spring Meeting. 14.05.2012-18.05.2012, Strasbourg]
Institutional research plan: CEZ:AV0Z10100521
Keywords : nanocrystalline diamond * oxygen terminated diamond * hydrogen terminated diamond * KPFM * SEM
Subject RIV: BM - Solid Matter Physics ; Magnetism

Evaluation of diamond nanoparticle electrical potential under relevant environment (air) is substantial for their application in electronics as well as sensors and biology. We report on a novel method for characterization of diamond nanoparticles based on recording of their electrical potential as a function of their size and ageing by Kelvin Probe Force Microscopy (KPFM). We studied thermally oxidized or graphitized detonation diamond nanoparticles of 5-10 nm size with well defined opposite zeta potentials. The nanoparticles were deposited from diluted water-based solutions on a Si substrate half coated with Au. The KPFM evaluation method resolves characteristic surface potential differences of nanoparticles with different surface terminations.
Permanent Link: http://hdl.handle.net/11104/0219430