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Plasma deposited carbon nanowalls for detection of organic vapours

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F16%3A43875167" target="_blank" >RIV/70883521:28610/16:43875167 - isvavai.cz</a>

  • Výsledek na webu

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Plasma deposited carbon nanowalls for detection of organic vapours

  • Popis výsledku v původním jazyce

    One of the grand challenges in material science is to develop the efficient and low-cost sensors for quick detection of various toxic and carcinogenic molecules, which require rather lengthy procedures or costly techniques for detection. These challenges can be tasked with carbon nanowall-based sensors, where the thin film maze-like structures are deposited on silicon substrates with plasma-enhanced chemical vapour depositions. These sensors demonstrate the high sensitivity in response, selectivity and reversibility for the vapour detection of volatile organic compounds, when tested by an electrical resistance method during adsorption and desorption cycles. The maze-like structures of carbon are composed of several layers of vertically aligned sheets - mostly graphene [1,2]. The structures are deposited from two different plasma gas mixtures generated either in CH4 or C2F6 with H2 [3]. Herein the neutral H atoms are generated in surface wave plasma region driven by a 2.45 GHz microwave power supply and then mixed with CH4/C2F6 and deposited in capacitively coupled plasma region operating at 100 MHz. By variating plasma processing parameters, we are able to achieve even different wall-to-wall distances ranging from 50 nm and 300 nm when prepared on silicon wafer substrate [4]. Further these structures are subjected to different organic vapours of: DMA; urea; iso-pentane; diethyl ether; acetone; methanol; different hydrocarbons; etc. in order to evaluate the relationship between the change in resistance, molecular weight of the adsorbent, the polarity and the bonding/interaction type [4]. For assessment and unravelling the detection mechanisms different surface analyses methods (XPS, Raman, FTIR, SIMS, UV-Vis) are applied prior, between and at the end of molecule detection. The properties of carbon nanowalls are then linked, and will be discussed in respect to the properties of detected molecules.

  • Název v anglickém jazyce

    Plasma deposited carbon nanowalls for detection of organic vapours

  • Popis výsledku anglicky

    One of the grand challenges in material science is to develop the efficient and low-cost sensors for quick detection of various toxic and carcinogenic molecules, which require rather lengthy procedures or costly techniques for detection. These challenges can be tasked with carbon nanowall-based sensors, where the thin film maze-like structures are deposited on silicon substrates with plasma-enhanced chemical vapour depositions. These sensors demonstrate the high sensitivity in response, selectivity and reversibility for the vapour detection of volatile organic compounds, when tested by an electrical resistance method during adsorption and desorption cycles. The maze-like structures of carbon are composed of several layers of vertically aligned sheets - mostly graphene [1,2]. The structures are deposited from two different plasma gas mixtures generated either in CH4 or C2F6 with H2 [3]. Herein the neutral H atoms are generated in surface wave plasma region driven by a 2.45 GHz microwave power supply and then mixed with CH4/C2F6 and deposited in capacitively coupled plasma region operating at 100 MHz. By variating plasma processing parameters, we are able to achieve even different wall-to-wall distances ranging from 50 nm and 300 nm when prepared on silicon wafer substrate [4]. Further these structures are subjected to different organic vapours of: DMA; urea; iso-pentane; diethyl ether; acetone; methanol; different hydrocarbons; etc. in order to evaluate the relationship between the change in resistance, molecular weight of the adsorbent, the polarity and the bonding/interaction type [4]. For assessment and unravelling the detection mechanisms different surface analyses methods (XPS, Raman, FTIR, SIMS, UV-Vis) are applied prior, between and at the end of molecule detection. The properties of carbon nanowalls are then linked, and will be discussed in respect to the properties of detected molecules.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

    JB - Senzory, čidla, měření a regulace

  • OECD FORD obor

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/LO1504" target="_blank" >LO1504: Centrum polymerních systémů plus</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    International workshop on the application of nanomaterials, 15.-16. 11 2016 Zlín

  • ISBN

    978-80-7454-622-8

  • ISSN

  • e-ISSN

  • Počet stran výsledku

    1

  • Strana od-do

    1

  • Název nakladatele

    Tomas Bata University

  • Místo vydání

    Zlin

  • Místo konání akce

    Zlín

  • Datum konání akce

    15. 11. 2016

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku