COMPARISON OF SURFACE PROPERTIES OF DLC AND ULTRANANOCRYSTALLINE DIAMOND FILMS WITH RESPECT TO THEIR BIOAPPLICATIONS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F12%3A00198200" target="_blank" >RIV/68407700:21460/12:00198200 - isvavai.cz</a>

Výsledek na webu

<a href="http://pse2012.pse-conferences.net/tl_files/pse2012/abstractupload/PSE2012-PO3035-ext.pdf" target="_blank" >http://pse2012.pse-conferences.net/tl_files/pse2012/abstractupload/PSE2012-PO3035-ext.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

COMPARISON OF SURFACE PROPERTIES OF DLC AND ULTRANANOCRYSTALLINE DIAMOND FILMS WITH RESPECT TO THEIR BIOAPPLICATIONS

Popis výsledku v původním jazyce

Surface and antibacterial properties of diamond-like carbon (DLC) and ultrananocrystalline diamond (UNCD) films were studied and discussed. The DLC layers were prepared by pulsed laser deposition (PLD) with laser energy densities from 4 J*cm-2 to 14 J*cm-2 and PLD combined with ion bombardment. The percentage of sp2 and sp3 bonds was calculated using X-ray photoelectron spectroscopy (XPS). Depending on the laser energy density and the bombardment energy the amorphous films contained from 40 % to more than 80 % of sp3 bonds. Microwave plasma chemical vapor deposition (MWCVD) from 17% CH4 in N2 mixture was used for the preparation of UNCD films. They are composed of diamond nanocrystallites (3-5 nm in diameter) embedded in an amorphous carbon matrix, containing up to 30% sp2 bonds. The ratio of the crystalline and amorphous fractions is closed to 1. The morphology and topology of the films were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM), which reveale

Název v anglickém jazyce

COMPARISON OF SURFACE PROPERTIES OF DLC AND ULTRANANOCRYSTALLINE DIAMOND FILMS WITH RESPECT TO THEIR BIOAPPLICATIONS

Popis výsledku anglicky

Surface and antibacterial properties of diamond-like carbon (DLC) and ultrananocrystalline diamond (UNCD) films were studied and discussed. The DLC layers were prepared by pulsed laser deposition (PLD) with laser energy densities from 4 J*cm-2 to 14 J*cm-2 and PLD combined with ion bombardment. The percentage of sp2 and sp3 bonds was calculated using X-ray photoelectron spectroscopy (XPS). Depending on the laser energy density and the bombardment energy the amorphous films contained from 40 % to more than 80 % of sp3 bonds. Microwave plasma chemical vapor deposition (MWCVD) from 17% CH4 in N2 mixture was used for the preparation of UNCD films. They are composed of diamond nanocrystallites (3-5 nm in diameter) embedded in an amorphous carbon matrix, containing up to 30% sp2 bonds. The ratio of the crystalline and amorphous fractions is closed to 1. The morphology and topology of the films were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM), which reveale

Druh

O - Ostatní výsledky

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů