About: Switching polarity of oxidized detonation diamond nanoparticles on substrates

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Evaluation of diamond nanoparticles (DNPs) electrical potential under ambient environment is important for their application in electronics as well as sensors and biology. Here we use a novel methodology for characterization of nanoparticles based on recording of their electrical potential as a function of their size by two-pass Kelvin force microscopy (KFM). We study thermally oxidized detonation DNPs of 5nm nominal size. The nanoparticles were deposited from diluted water solutions on a Si substrate half coated with Au. The KFM using conductive Si tip resolved characteristic negative potential differences of 10-60mV on nanoparticles versus the substrate. When negative bias voltage to the KFM tip (-4V) is applied during the topography acquisition (the first pass), subsequent potential measurement (the second pass) shows inversion of nanoparticles potential contrast. The same effects were observed also in the case of 20nm colloidal Au nanoparticles. This effect is reversible and it is attributed to a charge retention in (or on) the nanoparticles. Evaluation of diamond nanoparticles (DNPs) electrical potential under ambient environment is important for their application in electronics as well as sensors and biology. Here we use a novel methodology for characterization of nanoparticles based on recording of their electrical potential as a function of their size by two-pass Kelvin force microscopy (KFM). We study thermally oxidized detonation DNPs of 5nm nominal size. The nanoparticles were deposited from diluted water solutions on a Si substrate half coated with Au. The KFM using conductive Si tip resolved characteristic negative potential differences of 10-60mV on nanoparticles versus the substrate. When negative bias voltage to the KFM tip (-4V) is applied during the topography acquisition (the first pass), subsequent potential measurement (the second pass) shows inversion of nanoparticles potential contrast. The same effects were observed also in the case of 20nm colloidal Au nanoparticles. This effect is reversible and it is attributed to a charge retention in (or on) the nanoparticles. (en)
Title	Switching polarity of oxidized detonation diamond nanoparticles on substrates Switching polarity of oxidized detonation diamond nanoparticles on substrates (en)
skos:prefLabel	Switching polarity of oxidized detonation diamond nanoparticles on substrates Switching polarity of oxidized detonation diamond nanoparticles on substrates (en)
skos:notation	RIV/68378271:_____/13:00425005!RIV14-GA0-68378271
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GBP108/12/G108)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kromka, Alexander Rezek, Bohuslav Stehlík, Štěpán
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	109334
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/13:00425005
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	diamond nanoparticles; gold nanoparticles; Kelvin force microscopy; surface charge; work function (en)
http://linked.open.../riv/klicoveSlovo	Kelvin force microscopy work function gold nanoparticles diamond nanoparticles surface charge
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[1A2C5DC8EE14]
http://linked.open...i/riv/nazevZdroje	Physica Status Solidi. A
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Preparation, modification and characterization of materials by radiation
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	210
http://linked.open...iv/tvurceVysledku	Kromka, Alexander Rezek, Bohuslav Stehlík, Štěpán Petit, T. Arnault, J.-C. Girard, H. A.
http://linked.open...ain/vavai/riv/wos	000329299700023
issn	1862-6300
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/pssa.201300052

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