Metal oxide patterns of one-dimensional nanofibers: On-demand, direct-write fabrication, and application as a novel platform for gas detection

Kyeorei Lim, Young Moo Jo, Ji Wook Yoon, Jong Heun Lee

Research output: Contribution to journalArticle

Abstract

To organize one-dimensional (1D) metal oxides into highly ordered and controllable architectures on the required regions remains challenging. Herein, we report for the first time the facile, versatile, and on-demand fabrication of metal oxide patterns comprising 1D nanofibers via near-field electrospinning (NFES), which have a wide variety of potential applications in sensors, optoelectronic circuits, and functional nanoelectronics. Grids, diamonds, and hexagrams of In2O3, Co3O4, and NiO nanofibers are first demonstrated, and the underlying mechanisms for fiber formation are systematically investigated with respect to the experimental parameters of NFES. Furthermore, we propose the nano-architectures as a novel gas sensing platform that exhibits an unprecedentedly high gas response (resistance ratio, ST = 239, T: Trimethylamine) and selectivity (STSE-1 > 7, E: Ethanol) to 5 ppm trimethylamine compared with thin film counterparts (ST = 24, STSE-1 ≈ 1). The research provides a vital breakthrough to fabricate metal oxide nano-architectures of 1D nanofibers and new platforms to design next-generation functional nanodevices for a wide range of emerging applications.

Original languageEnglish
Pages (from-to)24919-24928
Number of pages10
JournalJournal of Materials Chemistry A
Volume7
Issue number43
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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