Article
Physics, Applied
Zhiqiang Fan, Jinyi Zhong, Zhongwen Li, Yongchao Zheng, Zhizhen Wang, Shupei Bai
Summary: The temporal evolution and electrical characteristics of APPJ structures with different quartz tube wall thicknesses under AC power were investigated. The optimal wall thickness improved electron density and inactivation of E. coli. Thin-walled quartz tubes showed better inactivation characteristics regardless of treatment duration.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Ahmad Guji Yahaya, Tomohiro Okuyama, Jaroslav Kristof, Marius Gabriel Blajan, Kazuo Shimizu
Summary: The direct and indirect bactericidal effects of dielectric barrier discharge cold atmospheric-pressure microplasma were studied in an air and plasma jet generated in an argon-oxygen gas mixture. Direct treatment using air was found to be the most effective, showing a significant reduction in bacterial count within just 3 minutes. Increasing treatment time led to a decrease in oxygen concentration in the water and a reduction in absorbance peaks related to NO2- and NO3- concentration, indicating denitratification and denitritification in the treated water.
Article
Materials Science, Coatings & Films
Hongcheng Zhu, Linxiu Jiang, Shouru Xie, Yongrong Jiang, Hua Li
Summary: This study demonstrates that a needle-ring discharge device combined with an ion-wind generator can create a plasma-jet system with self-inlet gas, improving stability and brightness of the plasma jet. Additionally, the inclusion of ion wind enhances sterilization effects and increases the sterilization range.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Food Science & Technology
Hao Sun, Yaoke Duan, Huandong Li, Xiaoxia Hu, Bing Li, Jie Zhuang, Junxia Feng, Ruonan Ma, Zhen Jiao
Summary: This study investigated the effects of atmospheric cold plasma (ACP) on the microbiota community composition and diversity in blueberries, as well as its correlation with anthocyanin accumulation during storage. The results showed that ACP treatment did not selectively inactivate microbiota at the phylum level, but increased the proportion of Bacteroides and Faecalibacterium at the genus level. Certain bacterial species were identified as biomarkers of ACP-mediated sterilization. The surviving microbiota were less pathogenic and more sensitive to environmental stresses. The anthocyanin concentration in blueberries was slightly affected by a 10-min ACP treatment, but decreased after a 20-min treatment. Correlation analysis revealed specific bacteria that were positively or negatively correlated with anthocyanins. This study helps evaluate the performance and risk of ACP-mediated postharvest preservation of blueberries.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Review
Food Science & Technology
Muhammad Umair, Tayyaba Sultana, Song Xun, Saqib Jabbar, Muhammad Shahid Riaz Rajoka, Amgad Albahi, Muhammad Abid, Muhammad Modassar Ali Nawaz Ranjha, Hesham R. R. El-Seedi, Fengwei Xie, Kashif Ur Rehman Khan, Liqing Zhao, Zhendan He
Summary: This review discusses the recent advancements in cold sterilization of food and fresh-keeping packaging. Functional nanoparticles, such as TiO2 and Fe2O3, with photocatalytic activity have gained attention but raise concerns about their toxicity and safety. The bacteriostatic and fresh-keeping properties of these nanoparticles and their packaging strategies using ultraviolet photo-catalysis effect are emphasized. The innovative method of cold sterilizing food using high-voltage electric field cold plasma (HVEF-CP) is also discussed.
FOOD SCIENCE & NUTRITION
(2023)
Article
Food Science & Technology
Xiaowei Sheng, Wenjing Yan, Luling Zhao, Jing Qian, Shanrui Li, Zhumiao Ye, Jianhao Zhang, Jin Wang
Summary: The study aimed to develop a cold plasma +222 nm ultraviolet (CP + UV) sterilization device for the food industry. Response surface methodology was used to assess the effects of three treatment conditions on the antibacterial activity of CP + UV. The optimal treatment conditions were determined, and the device's effectiveness in inhibiting the growth of S. aureus on different food contact materials was investigated.
Article
Engineering, Chemical
Zhitong Chen, Richard Obenchain, Richard E. Wirz
Summary: Researchers developed a single-electrode tiny plasma jet for clinical biomedical applications, studying the effect of voltage input and flow rate on the jet length and physical parameters. Interactions between the tiny plasma jet and different subjects showed an increase in ROS/RNS intensity as the distance decreased. These findings suggest the potential use of the tiny plasma jet device in clinical biomedical applications.
Review
Biochemistry & Molecular Biology
Dayun Yan, Alisa Malyavko, Qihui Wang, Kostya (Ken) Ostrikov, Jonathan H. Sherman, Michael Keidar
Summary: Cold atmospheric plasma (CAP) is a partially ionized gas that can effectively induce cell death in a wide range of cell types and inactivate viruses. The cell death types triggered by CAP mainly include apoptosis, necrosis, and autophagy-associated cell death. The physical effects of CAP might provide potential mechanisms for targeting cancer cells.
Article
Physics, Fluids & Plasmas
Yi Liu, Li Lin, Michael Keidar
Summary: This research discovers that electromagnetic emissions from cold atmospheric plasmas can cause cell membrane oscillations and increase sensitivity to the chemical active ingredients used in treatments. The study calculates the spatial distribution of electromagnetic emission power density spectrum from a cold atmospheric helium plasma jet, and identifies plasma oscillations as the main source of electromagnetic radiation.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Hanh My Bui, Richard Fischer, Normen Szesni, Markus Tonigold, Klaus Achterhold, Franz Pfeiffer, Olaf Hinrichsen
Summary: A complete preparation route for the direct 3D printing of Al2O3 supports using Binder Jetting technology was established. The research shows that the alumina framework can be stabilized at relatively low temperatures through ambient slurry infiltration after debinding, while maintaining catalytically relevant values.
ADDITIVE MANUFACTURING
(2022)
Article
Physics, Fluids & Plasmas
K. Polaskova, D. Necas, L. Dostal, M. Klima, P. Fiala, L. Zajickova
Summary: The self-organization phenomena observed in the radio frequency plasma slit jet have significant implications in the field of nanotechnology. These phenomena are influenced by gas feed and material properties.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Biomedical
S. Lata, Shibani Chakravorty, Tamoghni Mitra, Prasanti Kumari Pradhan, Soumyakanta Mohanty, Paritosh Patel, Ealisha Jha, Pritam Kumar Panda, Suresh K. Verma, Mrutyunjay Suar
Summary: Plasma, especially cold atmospheric plasma, has wide applications in dentistry. It can effectively eliminate bacteria, improve dental instrument sterilization, provide advantages in dental cavity and root canal disinfection, and benefit tooth whitening and dental implant success. The development of cold atmospheric plasma has also led to more advanced treatment devices.
MATERIALS TODAY BIO
(2022)
Article
Physics, Applied
Xiaomeng Wu, Yanghe Luo, Fujunzhu Zhao, Safian M. Murad, Guangqing Mu
Summary: The study found that dielectric barrier discharge cold plasma (DBD-CP) can disrupt bacterial cell membranes, reduce metabolic enzyme activity, and destroy bacterial DNA. Additionally, it stabilizes milk structures and maintains acceptable physicochemical properties under certain voltage and time conditions, indicating that DBD-CP could be a new sterilization method for milk.
PLASMA PROCESSES AND POLYMERS
(2021)
Article
Physics, Applied
Yang Lv, Lanlan Nie, Jiangwei Duan, Zhiyu Li, Xinpei Lu
Summary: A 9-channel plasma jet array was designed to enhance the efficiency of transdermal drug delivery in this study. The experiment showed that the drug delivery efficiency across the skin was significantly increased after the plasma treatment. Histological analysis revealed that the plasma could disrupt the structure of the stratum corneum, and further investigations indicated that reactive oxygen species played a key role in enhancing drug delivery efficiency.
PLASMA PROCESSES AND POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Julia Mrotzek, Wolfgang Vioel
Summary: The plasma effluent of cold plasma spray was characterized by optical emission spectroscopy, showing rotational temperatures around 4000K and excitation temperatures around 6000K. The gas flow rate had no influence on the spray.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)