Formation of organosilicon nanoparticles in a gas aggregation source as witnessed by in situ light scattering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385439" target="_blank" >RIV/00216208:11320/18:10385439 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Formation of organosilicon nanoparticles in a gas aggregation source as witnessed by in situ light scattering

Popis výsledku v původním jazyce

In this work, we applied a method of light scattering for in situ detection of organosilicon nanoparticles (NPs). Plasma polymerization of hexamethyldisiloxane (HMDSO) in its 10 % mixture with Ar was used to synthesize the NPs by means of a gas aggregation cluster source (GAS). The total pressure of 45 Pa and the RF discharge power in a range of 20 - 80 W were used. The GAS was constructed to allow passing of a laser beam (446 nm) across the beam of the NPs at the distance of 2 cm behind the exit orifice and acquiring the scattered light either by an optical emission spectrometer or by a CCD camera. Although for 20 W power constant intensity of the scattered light was obtained, cycling instabilities were detected for higher power. Both amplitude and period of such fluctuations increased with the discharge power increasing from 40 to 80 W. Cycling repelling of NPs and formation of plasma voids are suggested as possible mechanisms for the observed phenomena.

Název v anglickém jazyce

Formation of organosilicon nanoparticles in a gas aggregation source as witnessed by in situ light scattering

Popis výsledku anglicky

In this work, we applied a method of light scattering for in situ detection of organosilicon nanoparticles (NPs). Plasma polymerization of hexamethyldisiloxane (HMDSO) in its 10 % mixture with Ar was used to synthesize the NPs by means of a gas aggregation cluster source (GAS). The total pressure of 45 Pa and the RF discharge power in a range of 20 - 80 W were used. The GAS was constructed to allow passing of a laser beam (446 nm) across the beam of the NPs at the distance of 2 cm behind the exit orifice and acquiring the scattered light either by an optical emission spectrometer or by a CCD camera. Although for 20 W power constant intensity of the scattered light was obtained, cycling instabilities were detected for higher power. Both amplitude and period of such fluctuations increased with the discharge power increasing from 40 to 80 W. Cycling repelling of NPs and formation of plasma voids are suggested as possible mechanisms for the observed phenomena.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LTC17062" target="_blank" >LTC17062: Nanokompozitní vrstvy na bázi nanočástic hydrogenizovaného uhlíku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

9TH INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH &amp; APPLICATION (NANOCON 2017)

ISBN

978-80-87294-81-9

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

937-941

Název nakladatele

TANGER LTD

Místo vydání

SLEZSKA

Místo konání akce

Brno

Datum konání akce

18. 10. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000452823300156