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Gerchman D, Acunha Ferrari PH, Baranov O, Levchenko I, Takimi AS, Bazaka K. One-step rapid formation of wrinkled fractal antibiofouling coatings from environmentally friendly, waste-derived terpenes. J Colloid Interface Sci 2024; 668:319-334. [PMID: 38678887 DOI: 10.1016/j.jcis.2024.04.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/26/2024] [Accepted: 04/08/2024] [Indexed: 05/01/2024]
Abstract
Wrinkled coatings are a potential drug-free method for mitigating bacterial attachment and biofilm formation on materials such as medical and food grade steel. However, their fabrication typically requires multiple steps and often the use of a stimulus to induce wrinkle formation. Here, we report a facile plasma-based method for rapid fabrication of thin (<250 nm) polymer coatings from a single environmentally friendly precursor, where wrinkle formation and fractal pattern development are controlled solely by varying the deposition time from 3 s to 60 s. We propose a mechanism behind the observed in situ development of wrinkles in plasma, as well as demonstrate how introducing specific topographical features on the surface of the substrata can result int the formation of even more complex, ordered wrinkle patterns arising from the non-uniformity of plasma when in contact with structured surfaces. Thus-fabricated wrinkled surfaces show good adhesion to substrate and an antifouling activity that is not observed in the equivalent smooth coatings and hence is attributed to the specific pattern of wrinkles.
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Affiliation(s)
- Daniel Gerchman
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Oleg Baranov
- Department of Theoretical Mechanics, Engineering and Robomechanical Systems, National Aerospace University, Kharkiv 61070, Ukraine; Department of Gaseous Electronics, Jožef Stefan Institute, Ljubljana 1000, Slovenia, EU
| | - Igor Levchenko
- Plasma Sources and Application Center, NIE, Nanyang Technological University, Singapore 639798, Singapore.
| | | | - Kateryna Bazaka
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
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2
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Ducrozet F, Sebastian A, Garcia Villavicencio CJ, Ptasinska S, Sicard-Roselli C. Quantifying hydroxyl radicals generated by a low-temperature plasma using coumarin: methodology and precautions. Phys Chem Chem Phys 2024; 26:8651-8657. [PMID: 38436422 DOI: 10.1039/d4cp00040d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
The detection and quantification of hydroxyl radicals (HO˙) generated by low-temperature plasmas (LTPs) are crucial for understanding their role in diverse applications of plasma radiation. In this study, the formation of HO˙ in the irradiated aqueous phase is investigated at various plasma parameters, by probing them indirectly using the coumarin molecule. We propose a quantification methodology for these radicals, combining spectrophotometry to study the coumarin reaction with hydroxyl radicals and fluorimetry to evaluate the formation yield of the hydroxylated product, 7-hydroxycoumarin. Additionally, we thoroughly examine and discuss the impact of pH on this quantification process. This approach enhances our comprehension of HO˙ formation during LTP irradiation, adding valuable insights to plasma's biological applications.
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Affiliation(s)
- Florent Ducrozet
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Amal Sebastian
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA.
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Cecilia Julieta Garcia Villavicencio
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA.
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Sylwia Ptasinska
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA.
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Cécile Sicard-Roselli
- Institut de Chimie Physique, UMR 8000, CNRS, Université Paris-Saclay, 91405 Orsay, France.
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3
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Lim JS, Kim D, Ki S, Mumtaz S, Shaik AM, Han I, Hong YJ, Park G, Choi EH. Characteristics of a Rollable Dielectric Barrier Discharge Plasma and Its Effects on Spinach-Seed Germination. Int J Mol Sci 2023; 24:ijms24054638. [PMID: 36902069 PMCID: PMC10002516 DOI: 10.3390/ijms24054638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/18/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
We investigated the characteristics of a rollable dielectric barrier discharge (RDBD) and evaluate its effects on seed germination rate and water uptake. The RDBD source was composed of a polyimide substrate and copper electrode, and it was mounted in a rolled-up structure for omnidirectional and uniform treatment of seeds with flowing synthetic air gas. The rotational and vibrational temperatures were measured to be 342 K and 2860 K, respectively, using optical emission spectroscopy. The chemical species analysis via Fourier-transform infrared spectroscopy and 0D chemical simulation showed that O3 production was dominant and NOx production was restrained at the given temperatures. The water uptake and germination rate of spinach seeds by 5 min treatment of RDBD was increased by 10% and 15%, respectively, and the standard error of germination was reduced by 4% in comparison with the controls. RDBD enables an important step forward in non-thermal atmospheric-pressure plasma agriculture for omnidirectional seed treatment.
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Affiliation(s)
- Jun Sup Lim
- Plasma Bioscience Research Center (PBRC), Kwangwoon University, Seoul 01897, Republic of Korea
| | - Daeun Kim
- Electrical and Biological Physics Department, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Sehoon Ki
- Institute of Plasma Technology, Korea Institute of Fusion Energy, Gunsan 54004, Republic of Korea
| | - Sohail Mumtaz
- Plasma Bioscience Research Center (PBRC), Kwangwoon University, Seoul 01897, Republic of Korea
| | - Abdul Munnaf Shaik
- Electrical and Biological Physics Department, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Ihn Han
- Plasma Bioscience Research Center (PBRC), Kwangwoon University, Seoul 01897, Republic of Korea
| | - Young June Hong
- Plasma Bioscience Research Center (PBRC), Kwangwoon University, Seoul 01897, Republic of Korea
| | - Gyungsoon Park
- Electrical and Biological Physics Department, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center (PBRC), Kwangwoon University, Seoul 01897, Republic of Korea
- Electrical and Biological Physics Department, Kwangwoon University, Seoul 01897, Republic of Korea
- Correspondence:
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Flexible Cold Atmospheric Plasma Jet Sources. PLASMA 2023. [DOI: 10.3390/plasma6010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
The properties of non-thermal atmospheric pressure plasma jets (APPJs) make them suitable for industrial and biomedical applications. They show many advantages when it comes to local and precise surface treatments, and there is interest in upgrading their performance for irradiation on large areas and uneven surfaces. The generation of charged species (electrons and ions) and reactive species (radicals), together with emitted UV photons, enables a rich plasma chemistry that should be uniform on arbitrary sample profiles. Lateral gradients in plasma parameters from multi-jets should, therefore, be minimized and addressed by means of plasma monitoring techniques, such as electrical diagnostics and optical emission spectroscopy analysis (OES). This article briefly reviews the main strategies adopted to build morphing APPJ arrays and ultra-flexible and long tubes to project cold plasma jets. Basic aspects, such as inter-jet interactions and nozzle shape, have also been discussed, as well as potential applications in the fields of polymer processing and plasma medicine.
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Baek KH, Jang D, Kim T, Ryoo S, Yang JY, Park JS, Kim E, Lee S. Polyimide Surface Dielectric Barrier Discharge for Inactivation of SARS-CoV-2 Trapped in a Polypropylene Melt-Blown Filter. ACS APPLIED POLYMER MATERIALS 2022; 4:8127-8135. [PMID: 37552736 PMCID: PMC9612591 DOI: 10.1021/acsapm.2c01086] [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: 06/24/2022] [Accepted: 10/12/2022] [Indexed: 08/10/2023]
Abstract
Surface dielectric barrier discharge (SDBD) was used to inactivate the infectious severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) trapped in a polypropylene (PP) melt-blown filter. We used a dielectric barrier made of polyimide films with hexagonal holes through which air flowed. In a cylindrical wind tunnel, the SDBD device supplied reactive oxygen species such as ozone to the SARS-CoV-2 trapped in the PP filter. A plaque assay showed that SDBD at an ozone concentration of approximately 51.6 ppm and exposure time of 30 min induced more than 99.78% reduction for filter-adhered SARS-CoV-2. A carbon catalyst after SDBD effectively reduced ozone exhaust below 0.05 ppm. The combination of SDBD, PP filter, and catalyst could be a promising way to decrease the risk of secondary infection due to indoor air purifiers.
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Affiliation(s)
- Ki Ho Baek
- Department of Nano-Bio Convergence, Korea
Institute of Materials Science, Changwon51508,
Korea
| | - Donghwan Jang
- Clinical Research Centre, Masan National
Tuberculosis Hospital, Changwon51755, Korea
| | - Taeyoon Kim
- Clinical Research Centre, Masan National
Tuberculosis Hospital, Changwon51755, Korea
| | - Sungweon Ryoo
- Clinical Research Centre, Masan National
Tuberculosis Hospital, Changwon51755, Korea
| | - Jun-Yeong Yang
- Department of Nano-Bio Convergence, Korea
Institute of Materials Science, Changwon51508,
Korea
| | - Jun Soon Park
- VALS Innovation, 255
Horyeong-ro, Seocho-gu, Seoul06653, Korea
| | - Eunggon Kim
- VALS Innovation, 255
Horyeong-ro, Seocho-gu, Seoul06653, Korea
| | - Seunghun Lee
- Department of Nano-Bio Convergence, Korea
Institute of Materials Science, Changwon51508,
Korea
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Boonyawan D, Lamasai K, Umongno C, Rattanatabtimtong S, Yu L, Kuensaen C, Maitip J, Thana P. Surface dielectric barrier discharge plasma-treated pork cut parts: bactericidal efficacy and physiochemical characteristics. Heliyon 2022; 8:e10915. [PMID: 36247123 PMCID: PMC9561744 DOI: 10.1016/j.heliyon.2022.e10915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/09/2022] [Accepted: 09/28/2022] [Indexed: 11/30/2022] Open
Abstract
Maintaining agro-food product safety remains a significant challenge for satisfying local and global consumers in tropical countries. This issue has been growing due to new pathogen strains, low infectious doses, increased virulence, antibiotic resistance, cross-contamination or recontamination of foods, food-contact surfaces, and biocontamination of water within the food production chain. To respond to this situation, we studied the inactivation efficacy of surface dielectric barrier discharge (SDBD) plasma against pathogens on the surface of various pork cut parts, including the loin, hip, belly, liver, and intestine. The SDBD plasma was operated at 0.30 W/cm2 in ambient air, with a gap of 5.0 mm between the plasma generator and the sample surface. Up to 96% germicidal efficiency against surface pathogens were observed, showing after 1 min of SDBD plasma exposure. Visualization of reactive species deposition on the treated surface using KI-starch agar gel reagent indicated a non-uniform distribution of the SDBD-generated reactive species on the treated surface. Following the indirect plasma treatment by the SDBD reactor, the overall color of pork cut samples after plasma treatment was significantly different compared with before. However, the surface morphology and structural characterization of the treated pork cut samples were not significantly altered, and residual nitrites and nitrates were lower than the restriction level for safe consumption. The SDBD reactor should be developed further to produce a uniform distribution of reactive species on the meat surface for the improvement of the decontamination effect without undesirable effects on meat quality parameters.
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Affiliation(s)
- D. Boonyawan
- Plasma and Beam Physics Research Facility, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - K. Lamasai
- Doctor of Philosophy Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - C. Umongno
- Plasma and Beam Physics Research Facility, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - S. Rattanatabtimtong
- Department of Animal Science, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand
| | - L.D. Yu
- Plasma and Beam Physics Research Facility, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - C. Kuensaen
- International College of Digital Innovation, Chiang Mai University, Chiang Mai 50200, Thailand
| | - J. Maitip
- Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
| | - P. Thana
- Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand,Corresponding author.
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