Article
Thermodynamics
Clayton R. Mulvihill, Sulaiman A. Alturaifi, Eric L. Petersen
Summary: This study measured the low-pressure limit rate constant of the N2O + M reaction using laser absorption spectroscopy and analyzed the results with excellent agreement with historical data. The determined expression for the rate constant showed better stability and precision over a wide temperature range.
COMBUSTION AND FLAME
(2021)
Article
Biochemistry & Molecular Biology
Sung Un Kang, Chul-Ho Kim, Sanghyun You, Da-Young Lee, Yu-Kwon Kim, Seung-Joo Kim, Chang-Koo Kim, Hee-Kyung Kim
Summary: The efficiency of plasma surface modifications depends on the operating conditions. This study investigated the effect of chamber pressure and plasma exposure time on the surface properties of 3Y-TZP with N-2/Ar gas. The atmospheric plasma treatments increased zirconia's electron donation (?(-)) capacity, while the vacuum plasma treatments decreased ?(-) parameter with increasing times.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Food Science & Technology
Leila Zare, Neda Mollakhalili-Meybodi, Hossein Fallahzadeh, Masoumeh Arab
Summary: This study investigated the effect of atmospheric pressure cold plasma treatment on the technological characteristics of quinoa flour. The results showed that the rheological, thermal, hydration, and morphological properties of the flour were significantly influenced by the exposure time and voltage of the treatment.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Review
Physics, Applied
Frank Foerster
Summary: This paper introduces the development and application of atmospheric pressure plasma technology, with a focus on the use of corona treatment to improve adhesion on material surfaces.
PLASMA PROCESSES AND POLYMERS
(2022)
Review
Biotechnology & Applied Microbiology
Shin-Ping Lin, Darin Khumsupan, Yu-Jou Chou, Kuan-Chen Hsieh, Hsien-Yi Hsu, Yuwen Ting, Kuan-Chen Cheng
Summary: Atmospheric cold plasma is a nonthermal technology that is widely used in engineering and biotechnology. Despite facing challenges, it has the potential to impact operation processes, enhance safety, and reduce costs, while also providing opportunities for further research.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Elisa Sainz-Garcia, Maria Lopez, Rodolfo Mugica-Vidal, Beatriz Rojo-Bezares, Carmen Lozano, Ana Gonzalez-Marcos, Paula Toledano, Ignacio Muro-Fraguas, Ana Sainz-Garcia, Yolanda Saenz, Fernando Alba-Elias
Summary: This study utilized atmospheric-pressure plasma polymerization to promote Pseudomonas aeruginosa biofilm production on polystyrene Petri dishes, and discovered a direct relationship between the thickness of the coatings and the biofilm production.
APPLIED SURFACE SCIENCE
(2022)
Article
Food Science & Technology
Sarmistha Mitra, Mayura Veerana, Eun-Ha Choi, Gyungsoon Park
Summary: Pre-treatment with NTAPPJ or PTW can improve the antibacterial quality of mushroom surfaces by decreasing bacterial attachment (for NTAPPJ) and increasing bacterial lipid peroxidation (for both NTAPPJ and PTW).
Article
Multidisciplinary Sciences
Martina Darmanin, Antje Froehling, Sara Bussler, Julia Durek, Susanne Neugart, Monika Schreiner, Renald Blundell, Ruben Gatt, Oliver Schlueter, Vasilis P. Valdramidis
Summary: This study found that the combined treatment of mung bean seeds with direct air CAP and air PAW did not negatively impact seed germination and growth, while reducing the microbial population in sprouts. Additionally, sustained plasma treatment through irrigation with PAW significantly enhanced seedling growth, supporting further applications of plasma in the agro-food industry.
SCIENTIFIC REPORTS
(2021)
Article
Green & Sustainable Science & Technology
Yanying He, Yiming Li, Xuecheng Li, Yingrui Liu, Yufen Wang, Haixiao Guo, Jiaqi Hou, Tingting Zhu, Yiwen Liu
Summary: This paper comprehensively reviews the status of greenhouse gas (GHG) production and emission in wastewater treatment. It reveals that nitrous oxide (N2O) emission contributes significantly to the total GHG emissions, and emphasizes the importance of dissolved N2O and methane (CH4) in effluent for further GHG mitigation. Alternative integration systems, such as coupling denitrifying anaerobic methane oxidation with anammox process, are discussed as promising approaches for GHG mitigation. Moreover, strategies to manage N2O and CH4 as energy sources are demonstrated for offsetting carbon footprint in wastewater treatment and achieving net-zero GHG emission.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Engineering, Environmental
Haoran Duan, Yingfen Zhao, Konrad Koch, George F. Wells, Min Zheng, Zhiguo Yuan, Liu Ye
Summary: This article reviews the state-of-the-art of N2O mitigation studies in wastewater treatment, identifying key technical challenges and opportunities for improvement, and proposing directions for further research.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Chemistry, Analytical
Juan He, Xiaohui Wen, Lan Wu, Hanjiao Chen, Jing Hu, Xiandeng Hou
Summary: This review highlights the recent advancements in the synthesis and modification of nanomaterials using DBD plasma, as well as its applications in analytical chemistry. DBD plasma technology, with its advantages of facilitating chemical reactions, low power consumption, and simple operation, has found wide applications in the synthesis and analytical chemistry of nanomaterials.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jacob Manzi, Ariel E. E. Weltner, Tony Varghese, Nicholas McKibben, Mia Busuladzic-Begic, David Estrada, Harish Subbaraman
Summary: This paper demonstrates the use of plasma-jet printing (PJP) to deposit thermoelectric nanoflakes onto flexible substrates at room temperature, with substantial improvements in material adhesion and flexibility observed. The printed films exhibit electrical conductivity of 2.5 x 10(3) S m(-1) and a power factor of 70 mu W m(-1) K-2 at room temperature. This advancement in plasma jet printing promotes not only the development of energy harvesting but also large-scale flexible electronics and sensors for space and commercial applications.
Article
Environmental Sciences
M. F. S. Goncalves, G. Petraconi Filho, A. A. Couto, A. S. da Silva Sobrinho, F. S. Miranda, M. Massi
Summary: This study evaluated the efficiency of a thermal plasma treatment process in processing solid radioactive waste. The results showed that this method is a promising way to manage and reduce the mass and volume of radioactive waste.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Physics, Applied
Vera Bracht, Jan-Luca Gembus, Nikita Bibinov, Peter Awakowicz
Summary: Erosion and oxide formation on an aluminium oxide surface and aluminium substrate can be induced by a DBD-like plasma jet at atmospheric pressure, similar to plasma electrolytic oxidation (PEO). Experimental results support the similarity of erosion mechanisms induced by the atmospheric pressure DBD-like plasma jet and PEO microdischarges. The inward growth mechanism of the oxide layer during PEO processing is substantiated by comparing aluminium oxide erosion and oxide layer deposition by the considered He-plasma jet and a PEO process.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Review
Chemistry, Multidisciplinary
Aline C. Borges, Konstantin G. Kostov, Rodrigo S. Pessoa, Geraldo M. A. de Abreu, Gabriela de M. G. Lima, Leandro W. Figueira, Cristiane Y. Koga-Ito
Summary: Plasma is an electrically conducting medium that responds to electric and magnetic fields. Non-thermal plasmas contain highly reactive species at low temperatures, showing promising applications in the medical field.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Sei Mifune, Shota Okada, Takahiro Iwai, Mayuko Yoshida, Satoki Okabayashi, Hidekazu Miyahara, Akitoshi Okino, Koichi Chiba
Article
Materials Science, Multidisciplinary
Yu-Lin Kuo, Fu-Chen Kung, Chi-Liang Ko, Akitoshi Okino, Tai-Chin Chiang, Jhao-Yu Guo, Song-Yu Chen
Article
Chemistry, Physical
Song-Yu Chen, Yu-Lin Kuo, Yao-Ming Wang, Wei-Mau Hsu, Tzu-Hsuan Chien, Chiu-Feng Lin, Cheng-Hsien Kuo, Akitoshi Okino, Tai-Chin Chiang
Summary: Commercial graphite felt (GF) is used as electrodes and coated with a polydopamine catalyst to enhance the electrocatalytic activity for the redox reaction of vanadium ions in vanadium redox flow battery (VRFB). Through a facile coating using atmospheric pressure plasma jet (APPJ), the surface superhydrophilicity is altered and more active sites are provided on the modified electrodes, leading to improved electrochemical performance. The technique of APPJ coating offers oxygen-containing functional groups on the substrate surface for hydrogen bonding with grafted polymeric materials.
Article
Chemistry, Physical
Nobuhiro Yoda, Yuri Abe, Yuma Suenaga, Yoshiki Matsudate, Tomohiro Hoshino, Takehiko Sugano, Keisuke Nakamura, Akitoshi Okino, Keiichi Sasaki
Summary: The effect of different gas species and treatment times on zirconia surface state and bond strength between zirconia and dental resin cement was investigated. Plasma treatment with nitrogen gas significantly increased bond strength and removed carbon contamination from the zirconia surface. Plasma treatment did not affect surface topography and crystalline phase.
Article
Chemistry, Multidisciplinary
Yuma Suenaga, Toshihiro Takamatsu, Toshiki Aizawa, Shohei Moriya, Yuriko Matsumura, Atsuo Iwasawa, Akitoshi Okino
Summary: The study found that nitrogen plasma produced a higher concentration of OH radicals, while the concentration of singlet oxygen in carbon dioxide plasma increased with gas temperature. The bactericidal ability of carbon dioxide plasma increased with gas temperature, while nitrogen plasma did not exhibit a high bactericidal effect.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Yuma Suenaga, Toshihiro Takamatsu, Toshiki Aizawa, Shohei Moriya, Yuriko Matsumura, Atsuo Iwasawa, Akitoshi Okino
Summary: The study designed and built a multi-gas temperature-controllable plasma jet, which was able to control the gas temperature of plasmas with different gas species. Computational fluid dynamics analysis was used to evaluate the temperature control performance of nitrogen gas, and the fabricated plasma jet body successfully linearly controlled gas temperature for all plasma gas species. This is expected to expand the application range of atmospheric low temperature plasma and improve the plasma treatment effect.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Chemical
Yuma Suenaga, Hiroaki Kawano, Toshihiro Takamatsu, Yuriko Matsumura, Norihiko Ito, Atsuo Iwasawa, Akitoshi Okino
Summary: In this study, a plasma bubbling method and ultrasonic-combined plasma bubbling method were developed as effective disinfection methods for specific pathogens in ophthalmology. These methods demonstrated prominent bactericidal effects and removal effects on adherent bacteria on medical equipment, without causing damage to the measuring prism.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2022)
Article
Biotechnology & Applied Microbiology
Yuki Yanagawa, Yuma Suenaga, Yusuke Iijima, Akitoshi Okino, Ichiro Mitsuhara
Summary: This study investigated the mechanism of protein uptake in plant cells using temperature-controlled atmospheric-pressure plasma. The results showed that protein uptake potential remained in leaf tissue for at least 3 hours after plasma treatment. Further analysis revealed that the introduced protein reached a similar amount to that after overnight incubation at approximately 5 hours after irradiation. Inhibitor experiments confirmed that the N-2 plasma treatment induced protein transportation across the plant plasma membrane via clathrin-mediated endocytosis.
PLANT BIOTECHNOLOGY
(2022)
Article
Plant Sciences
Ryohei Koyama, Misaki Ishibashi, Itsuko Fukuda, Akitoshi Okino, Ro Osawa, Yuichi Uno
Summary: The strawberry fruit is rich in polyphenols, with cold treatment leading to a higher content of polyphenols. The fruits also respond immediately to cold stress, reaching a peak in about 6 days.
Article
Chemistry, Multidisciplinary
Takashi Ohta, Daisuke Ogasawara, Takahiro Iwai, Hidekazu Miyahara, Akitoshi Okino
Summary: We have developed a supersonic pulsed plasma jet device that can perform long-distance and high-speed processing, and studied its basic characteristics for surface treatment applications. The device is equipped with a mechanism that transports active species in the plasma to the target object by ejecting the generated high-density plasma outward using supersonic pulse jets. This allows the active species to reach the treatment target before deactivation, enabling surface treatment at a distance. Measurements using the Schlieren method revealed a jet flow velocity of Mach 1.7.
APPLIED SCIENCES-BASEL
(2023)
Article
Multidisciplinary Sciences
Yuki Yanagawa, Yuma Suenaga, Yusuke Iijima, Masaki Endo, Naoko Sanada, Etsuko Katoh, Seiichi Toki, Akitoshi Okino, Ichiro Mitsuhara
Summary: Previously, a technique to introduce sGFP fusion protein into plant cells using atmospheric-pressure plasma was developed. In this study, the CRISPR/Cas9 system was used for genome editing in plants through this protein introduction technique. The successful genome editing was detected in transgenic reporter plants by measuring chemiluminescent signal and hygromycin resistance. By directly introducing CRISPR/Cas9 ribonucleoproteins into rice calli or tobacco leaf pieces using plasma, genome-edited sequences were obtained. This method shows promise for genome editing in various plant species without DNA introduction.
Article
Physics, Fluids & Plasmas
Mao Xu, Yohei Fukuyama, Kazuki Nakai, Zhizhi Liu, Yuki Sumiya, Akitoshi Okino
Summary: The direct decomposition of toluene-containing humidified air at large flow rates in two types of reactors with dielectric barrier discharge was studied. A scalable large-flow DBD reactor was designed to evaluate its feasibility and decomposition characteristics. Another large-flow DBD reactor with a multilayer structure was developed and compared to the single-layer reactor to validate the scalability and superiority of the multilayer structure. The experimental results provide fundamental data and guidelines for the implementation of DBD plasma-based systems for volatile organic compound abatement.
Article
Nutrition & Dietetics
Tokuko Takajo, Hiroki Nagahama, Katsuya Zuinen, Kazunori Tsuchida, Akitoshi Okino, Kazunori Anzail
Summary: In this study, a cold atmospheric pressure plasma jet was used to investigate the generation of O-1 (2) in water. ESR was used to detect the nitroxide radicals formed by O-1 (2). It was found that the ESR signal intensity induced by plasma jet irradiation was inhibited by an O-1 (2) scavenger/quencher, indicating the presence of nitroxide radicals. The concentration of O-1 (2) produced by plasma jet irradiation for 60 s was estimated to be 8 μM. Cold atmospheric pressure plasma jet can mimic oxidative stress involving multiple ROS.
JOURNAL OF CLINICAL BIOCHEMISTRY AND NUTRITION
(2023)
Review
Chemistry, Analytical
Tianzhuo Zhan, Mao Xu, Zhi Cao, Chong Zheng, Hiroki Kurita, Fumio Narita, Yen-Ju Wu, Yibin Xu, Haidong Wang, Mengjie Song, Wei Wang, Yanguang Zhou, Xuqing Liu, Yu Shi, Yu Jia, Sujun Guan, Tatsuro Hanajiri, Toru Maekawa, Akitoshi Okino, Takanobu Watanabe
Summary: Wide-bandgap gallium nitride (GaN)-based semiconductors offer advantages in high-power and high-frequency operations, but self-heating effects (SHE) cause performance degradation. Reducing thermal boundary resistance (TBR) is necessary for better heat dissipation.
Article
Physics, Fluids & Plasmas
Yu-ki Tanaka, Taiki Osawa, Yoshikazu Yamagishi, Akitoshi Okino, Yasumitsu Ogra
Summary: This study demonstrates that cold atmospheric pressure plasma jet irradiation can effectively degrade methicillin and vancomycin, providing a powerful and environmentally friendly method for antibiotic treatment.
