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Optimierung der Morphologie von Sensoren für flüchtige organische Verbindungen
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ISBN10: 6209672302
ISBN13: 9786209672309
Publisher: Verlag Unser Wissen
Published: Feb 22 2026
Pages: 84
Weight: 0.27
Height: 0.20 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786209672309
Publisher: Verlag Unser Wissen
Published: Feb 22 2026
Pages: 84
Weight: 0.27
Height: 0.20 Width: 6.00 Depth: 9.00
Language: German
Die aktuelle Arbeit umfasst die Herstellung, Charakterisierung, Bewertung und anschlie ende Optimierung von dünnen Poly(methylmethacrylat) (PMMA)-Polymerfilmen, die mit Goldnanopartikelsensoren beschichtet sind, um flüchtige organische Verbindungen (VOCs) nachzuweisen. Bei VOC-Sensoren auf Basis von Polymer/Metall-Nanokompositen beeinflusst die Morphologie der Cluster, d. h. die Clustergrö e und -dichte, ma geblich die Sensoreigenschaften. Die Morphologie der Cluster hängt von der Herstellungsmethode und den Prozessparametern ab. Eine optimale Polymerfilmdicke von 100 nm, die durch Spin-Coating aufgebracht wird, sorgt für höchste Empfindlichkeit und Reversibilität. Durch Variation der Synthesebedingungen der Polymer/Metall-Nanokomposite hinsichtlich thermischer Verdampfung und Sputtern wurden die Sensoreigenschaften der PMMA-Gold-Nanokomposit-Sensoren systematisch optimiert. Die Morphologie der unter verschiedenen Synthesebedingungen hergestellten Cluster wurde systematisch mit hochauflösender Transmissionselektronenmikroskopie (TEM) untersucht. Basierend auf der TEM-Untersuchung und dem Ansprechsignal liegt die optimale Bedingung für die Herstellung von VOC-Sensoren im Nanoampere-Strombereich.
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