Article
Biochemistry & Molecular Biology
Pradeep Bhartiya, Neha Kaushik, Linh N. Nguyen, Sander Bekeschus, Kai Masur, Klaus-Dieter Weltmann, Nagendra Kumar Kaushik, Eun Ha Choi
Summary: Excessive redox stress is associated with skin pathophysiologic conditions. This study explores the effect of periodic redox stress on fibroblast cells and finds that stress above a certain threshold leads to alterations in cellular processes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Applied
Delin Kong, Ping Zhu, Feng He, Ruoyu Han, Bingyan Yang, Manyu Wang, Jiting Ouyang
Summary: The experimental and numerical results demonstrated that the introduction of N-2 and O-2 admixture significantly affects the length and propagation velocity of a helium atmospheric-pressure plasma jet. The changes in electron density outside the grounded electrode are related to the modifications in jet length.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Multidisciplinary
Avinash Maharaj, Antonio D'Angola, Gianpiero Colonna, Samuel A. Iwarere
Summary: The dynamics of plasma discharge in a Helium gas reactor were found to be different across various pressures, with high pressure leading to arc discharge and atmospheric pressure resulting in low current arc discharge. A large density gradient at higher pressures causes strong natural convection effect, impacting discharge shape and velocity field. Velocity magnitude was observed to be unaffected by electric current.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Pierre-Alexandre Royoux, Stephanie Ognier, Mengxue Zhang, Christophe M. Thomas, Michael Tatoulian
Summary: The oligomerization of 1-hexene under argon plasma was studied in a gas-liquid, continuous flow microreactor. The results showed that efficient conversion of 1-hexene into oligomers composed of 10 monomer units could be achieved, but light by-products were also formed.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Physics, Applied
Tuyen Ngoc Tran, Cha-Hwan Oh, Wonwook Lee
Summary: The study experimented on atmospheric pressure plasma and found that adding a target can enhance continuum radiation and increase electron density.
PLASMA PROCESSES AND POLYMERS
(2021)
Article
Nanoscience & Nanotechnology
Runze Fan, Xinyi Zhao, Miao Qi, Huaiyan Zhang, Xinying Zhang, Jin Zhang, Qiaosong Li, Dehui Xu
Summary: Plasma-activated solution (PAS) is receiving significant attention in cancer treatment due to its ability to treat deep tumors and be stored. This study investigated the changes in PAS during storage and its impact on its anticancer effect. The plasma-activated medium (PAM) was prepared by treating RPMI 1640 medium with afterglow gas, and it was stored at different temperatures for varying durations. The results showed that PAM exhibited different anticancer effects depending on the storage temperature, with the highest stability observed at -80 degrees C. These findings provide valuable insights into the storage and application of PAM in anticancer therapy.
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
Spectroscopy
Wonwook Lee, Tuyen Ngoc Tran, Cha-Hwan Oh
Summary: In this study, a helium atmospheric pressure plasma jet (APPJ) system was constructed to generate two guided streamers. The propagation of the guided streamer and its interaction with a grounded metallic target and pulsed laser were investigated. The results showed that the target extended the lifetime of the plasma radiation and the pulsed laser enhanced the spectra of the helium APPJ. The study also examined the relationship between the time interval of the pulsed laser and the guided streamer and various parameters.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Physics, Applied
G. Huebner, L. Bischoff, I Korolov, Z. Donko, M. Leimkuehler, Y. Liu, M. Boeke, V Schulz-von der Gathen, T. Mussenbrock, J. Schulze
Summary: This study investigated the effects of changing the driving frequencies on the electron power absorption dynamics, generation of helium metastables, and dissociation of nitrogen molecules in He/N-2 plasmas using experiments and simulations. The results showed that increasing the fundamental frequency can significantly enhance the plasma and metastable densities. Furthermore, the voltage waveform tailoring (VWT) operation yielded higher densities of helium metastables and electrons, as well as a higher dissociation rate of N-2, compared to the single-frequency operation mode.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Food Science & Technology
Silvia Mosovska, Veronika Medvecka, Matej Klas, Stanislav Kyzek, Lubomir Valik, Anna Mikulajova, Anna Zahoranova
Summary: The study evaluated the efficacy of plasma activated water (PAW) for reducing Escherichia coli on soybean seed surface, showing significant antibacterial potential. After 25 minutes of treatment, E. coli was significantly reduced and the antibacterial effect persisted for at least 44 hours.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
Sofia Chanioti, Marianna Giannoglou, Panagiota Stergiou, Dimitris Passaras, Panagiotis Dimitrakellis, George Kokkoris, Evangelos Gogolides, George Katsaros
Summary: The efficacy and applicability of Plasma Activated Ice (PAI) produced by cold atmospheric plasma (CAP) technology on microorganisms and quality characteristics of perishable fresh sea bream fillets were evaluated. PAI application significantly inhibited the growth of microbial load of the fillets and retarded the quality deterioration, leading to an extension of the fillets shelf-life compared to the other disinfectant media. The results proved the efficiency of PAI in extending the shelf-life of perishable foods during storage and transportation.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Hye Ran Lee, Yun Sang Lee, Young Suk You, Jin Young Huh, Kangil Kim, Yong Cheol Hong, Chul-Ho Kim
Summary: Skin antiseptics play a crucial role in public health and medicine. However, conventional antiseptics often come with skin toxicity and resistance development. This study demonstrates that plasma-activated water (PAW) generated by a microwave plasma system can serve as a novel antiseptic solution for skin protection. PAW exhibits excellent bactericidal effects without toxicity on normal skin cells. Furthermore, PAW shows potential as a sanitizer for SARS-CoV-2. These findings support the use of PAW as an effective and safe skin disinfectant in the current global pandemic.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Fluids & Plasmas
Laurent Invernizzi, Nader Sadeghi, Florent P. Sainct, Philippe Guillot
Summary: This work investigates the spatial variations of the helium He(2(3)S(1)) metastable atom densities in a plasma jet at atmospheric pressure. The radial profiles of He(2(3)S(1)) density along the plasma jet are deduced under different conditions. The influence of outlet tube diameter, gas flow rate, and electric field on the density distribution of the plasma jet is analyzed.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Nam-Sook Park, Se-Eun Yun, Hyun-Young Lee, Hae June Lee, Jeong-Hae Choi, Gyoo-Cheon Kim
Summary: A new technology called Nozone Cold Plasma (NCP) is developed to generate cold plasma with almost no ozone for sterilizing the oral cavity. The NCP demonstrates antimicrobial efficacy against oral pathogens in both solid and liquid mediums. The bactericidal effect in the liquid medium is attributed to the increase in hydrogen peroxide levels, while the effect in the solid medium depends on the charged elements of the NCP. The surface bactericidal efficiency of the dental-tip-installed NCP is influenced by the pore size and length of the tips.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Zifeng Wang, Yu Qi, Li Guo, Lingling Huang, Zhiqian Yao, Lu Yang, Gang Li, Jinkun Chen, Jinwei Yan, Gulimire Niyazi, Linbo Liu, Fugao Zhang, Dingxin Liu
Summary: The study investigated the bactericidal effects of plasma-activated saline prepared by activating nitrogen oxide and helium gas with different plasma modes. The combination of nitrogen oxide mode and plasma jet activation showed the strongest bactericidal effect, with reactive oxygen species playing essential roles in bacterial inactivation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
Yung-Hsin Liu, Chu-Hao Yang, Tsung-Rong Lin, Yun-Chien Cheng
PLASMA PROCESSES AND POLYMERS
(2018)
Article
Physics, Applied
Po-Chien Chien, Chao-Yu Chen, Yun-Chien Cheng, Takehiko Sato, Rui-Zhe Zhang
Summary: This study investigated the effects of atmospheric-pressure cold plasma-generated short-lived species, long-lived species, and electric fields on skin cancer cells and normal cells. The short-lived species showed significant inhibition of skin cancer cells' viability and induction of apoptosis, while the long-lived species and electric fields did not have significant effects on either normal or cancer cells. The study verified that short-lived species in plasma have a greater inhibitory effect on skin cancer cells compared to normal cells.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Shih-Sen Huang, Hsing-Che Tsai, Jerry Chang, Po-Chun Huang, Yun-Chien Cheng, Jong-Shinn Wu
Summary: This study used an equivalent circuit model to simulate the I-V characteristics of homogeneous and filamentary plasma discharges. By comparing with experimental results, it was demonstrated that the proposed circuit model accurately describes plasma physics and provides reliable simulation of discharges.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
Chu-Hao Yang, Chun-Ping Hsiao, Jerry Chang, Hsin-Yu Lo, Yun-Chien Cheng
Summary: The goal of this study is to establish a remote-plasma-based aerosol-assisted atmospheric-pressure plasma deposition (RAAPD) system for depositing protein-plasma-polymerized-ethylene coatings. The study investigated the effects of different factors on the deposition, such as mixing, mesh, deposition distance, gas flow, voltage, and frequency. The results showed that the downstream-mixing method reduced heat effects on protein. The optimal coating was achieved by using mesh, a close deposition distance, high flow rate of protein aerosol, and high voltage. Compared with current methods, the RAAPD method reduces the heat, reactive species, and UV effects on protein, and allows deposition without limitations of electrode area and substrate material.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Oncology
Ching-Kai Lin, Jerry Chang, Ching-Chun Huang, Yueh-Feng Wen, Chao-Chi Ho, Yun-Chien Cheng
Summary: This study successfully utilized deep learning methods to distinguish between benign and malignant lung cytologic cells and semantically segment malignant cells in images obtained through rapid on-site cytologic evaluation (ROSE) during endobronchial ultrasound (EBUS) procedures. The ResNet101 model achieved high accuracy in classification, while the HRNet model effectively marked the area of malignant cells. Automatic patch-cropping facilitated dataset preparation and diagnosis completion within 1 second. The results show promising potential for clinical application in the future.
Editorial Material
Physics, Fluids & Plasmas
Jian-Zhang Chen, Meng-Jiy Wang, Kun-Mo Lin, Yun-Chien Cheng, Kungen Teii, Hiroaki Ito
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Physics, Fluids & Plasmas
Jerry Chang, Po-Han Niu, Chin-Wen Chen, Yun-Chien Cheng
Summary: This study demonstrates the real-time and cost-effective monitoring of atmospheric-pressure plasma discharge using a deep learning model. By utilizing a data-driven convolutional neural network (CNN), the current characteristics were successfully extracted and analyzed, and the discharge type and working gas of an atmospheric-pressure plasma jet (APPJ) were predicted using the InceptionTime algorithm. The results prove the accuracy of CNN in predicting the discharge type and working gas of an APPJ.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Multidisciplinary Sciences
Ting-Wei Cheng, Yi Wei Chua, Ching-Chun Huang, Jerry Chang, Chin Kuo, Yun-Chien Cheng
Summary: This study proposed a feature-enhanced adversarial semi-supervised semantic segmentation model for automatic annotation of pulmonary embolism lesion areas in CTPA images. By using both labeled and unlabeled images, the accuracy of unlabeled images was improved and labeling cost was reduced. The proposed model outperformed the supervised model in terms of accuracy and sensitivity.
Article
Materials Science, Multidisciplinary
Chen-Feng Lin, Che-Fu Su, Kung-Hsuan Lin, Yu-Shen Hsieh, Yun-Chien Cheng
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Tsung-Wen Chen, Chih-Tung Liu, Chao-Yu Chen, Mu-Chien Wu, Po-Chien Chien, Yun-Chien Cheng, Jong-Shinn Wu
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2020)
