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Optimization of Atmospheric Pressure Plasma Jet with Single-Pin Electrode Configuration and Its Application in Polyaniline Thin Film Growth. Polymers (Basel) 2022; 14:polym14081535. [PMID: 35458285 PMCID: PMC9030824 DOI: 10.3390/polym14081535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/31/2022] [Accepted: 04/07/2022] [Indexed: 11/30/2022] Open
Abstract
This study systematically investigated an atmospheric pressure plasma reactor with a centered single pin electrode inside a dielectric tube for depositing the polyaniline (PANI) thin film based on the experimental case studies relative to variations in pin electrode configurations (cases I, II, and III), bluff-body heights, and argon (Ar) gas flow rates. In these cases, the intensified charge-coupled device and optical emission spectroscopy were analyzed to investigate the factors affecting intensive glow-like plasma generation for deposition with a large area. Compared to case I, the intense glow-like plasma of the cases II and III generated abundant reactive nitrogen species (RNSs) and excited argon radical species for fragmentation and recombination of PANI. In case III, the film thickness and deposition rate of the PANI thin film were about 450 nm and 7.5 nm/min, respectively. This increase may imply that the increase in the excited radical species contributes to the fragmentation and recombination due to the increase in RNSs and excited argon radicals during the atmospheric pressure (AP) plasma polymerization to obtain the PANI thin film. This intense glow-like plasma generated broadly by the AP plasma reactor can uniformly deposit the PANI thin film, which is confirmed by field emission-scanning electron microscopy and Fourier transform infrared spectroscopy.
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Riedel F, Golda J, Held J, Davies HL, van der Woude MW, Bredin J, Niemi K, Gans T, Schulz-von der Gathen V, O'Connell D. Reproducibility of 'COST reference microplasma jets'. PLASMA SOURCES SCIENCE & TECHNOLOGY 2020; 29:095018. [PMID: 34149205 PMCID: PMC8208597 DOI: 10.1088/1361-6595/abad01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/28/2020] [Accepted: 08/06/2020] [Indexed: 06/12/2023]
Abstract
Atmospheric pressure plasmas have been ground-breaking for plasma science and technologies, due to their significant application potential in many fields, including medicinal, biological, and environmental applications. This is predominantly due to their efficient production and delivery of chemically reactive species under ambient conditions. One of the challenges in progressing the field is comparing plasma sources and results across the community and the literature. To address this a reference plasma source was established during the 'biomedical applications of atmospheric pressure plasmas' EU COST Action MP1101. It is crucial that reference sources are reproducible. Here, we present the reproducibility and variance across multiple sources through examining various characteristics, including: absolute atomic oxygen densities, absolute ozone densities, electrical characteristics, optical emission spectroscopy, temperature measurements, and bactericidal activity. The measurements demonstrate that the tested COST jets are mainly reproducible within the intrinsic uncertainty of each measurement technique.
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Affiliation(s)
- F Riedel
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - J Golda
- Institute of Experimental and Applied Physics, Kiel University, 24098 Kiel, Germany
- Experimental Physics II, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - J Held
- Experimental Physics II, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - H L Davies
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
- York Biomedical Research Institute, Hull York Medical School, University of York, York YO10 5DD, United Kingdom
| | - M W van der Woude
- York Biomedical Research Institute, Hull York Medical School, University of York, York YO10 5DD, United Kingdom
| | - J Bredin
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - K Niemi
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - T Gans
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
| | | | - D O'Connell
- York Plasma Institute, Department of Physics, University of York, York YO10 5DD, United Kingdom
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Chiang WH, Mariotti D, Sankaran RM, Eden JG, Ostrikov KK. Microplasmas for Advanced Materials and Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905508. [PMID: 31854023 DOI: 10.1002/adma.201905508] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 09/28/2019] [Indexed: 05/23/2023]
Abstract
Microplasmas are low-temperature plasmas that feature microscale dimensions and a unique high-energy-density and a nonequilibrium reactive environment, which makes them promising for the fabrication of advanced nanomaterials and devices for diverse applications. Here, recent microplasma applications are examined, spanning from high-throughput, printing-technology-compatible synthesis of nanocrystalline particles of common materials types, to water purification and optoelectronic devices. Microplasmas combined with gaseous and/or liquid media at low temperatures and atmospheric pressure open new ways to form advanced functional materials and devices. Specific examples include gas-phase, substrate-free, plasma-liquid, and surface-supported synthesis of metallic, semiconducting, metal oxide, and carbon-based nanomaterials. Representative applications of microplasmas of particular importance to materials science and technology include light sources for multipurpose, efficient VUV/UV light sources for photochemical materials processing and spectroscopic materials analysis, surface disinfection, water purification, active electromagnetic devices based on artificial microplasma optical materials, and other devices and systems including the plasma transistor. The current limitations and future opportunities for microplasma applications in materials related fields are highlighted.
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Affiliation(s)
- Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan
| | - Davide Mariotti
- Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), Ulster University, Shore Road, Newtownabbey, BT37 0QB, UK
| | - R Mohan Sankaran
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106-7217, USA
| | - J Gary Eden
- Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL, 61801, USA
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
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