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.
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
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
Physics, Multidisciplinary
A. Boudjadar, F. Bouanaka, S. Rebiai
Summary: In this study, a 2D axisymmetric fluid model for an atmospheric pressure plasma jet driven by an 8 kV voltage pulse was investigated using COMSOL@ Multi-physics software. The results identified physical phenomena occurring in a cold plasma jet at atmospheric pressure with an argon pathway, providing a platform for future plasma jet applications.
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
Infectious Diseases
Isabell Plattfaut, Manuela Besser, Anna-Lena Severing, Ewa K. Stuermer, Christian Oplaender
Summary: The antibacterial effects of CAP on Staphylococcus aureus were not significant, with no desired disinfection or reduction in bacterial burden in wet environments or biofilms. CAP treatment is not recommended as a standalone antibacterial therapy for wounds, but could be used to supplement standard treatments.
INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS
(2021)
Article
Chemistry, Physical
Suresh Gosavi, Rena Tabei, Nitish Roy, Sanjay S. Latthe, Yuvaraj M. Hunge, Norihiro Suzuki, Takeshi Kondo, Makoto Yuasa, Katsuya Teshima, Akira Fujishima, Chiaki Terashima
Summary: Titanium dioxide (TiO2) thin films were deposited on glass and silicon substrates using the atmospheric pressure plasma jet (APPJ) technique. Characterization techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and field emission scanning electron microscopy were used to study the structure and morphology of the TiO2 thin films, showing strong UV absorption and efficient photocatalytic decomposition performance.
Article
Biochemistry & Molecular Biology
Yun-Chien Cheng, Kuo-Wei Chang, Jian-Hua Pan, Chao-Yu Chen, Chung-Hsien Chou, Hsi-Feng Tu, Wan-Chun Li, Shu-Chun Lin
Summary: This study investigated the effects of cold atmospheric plasma (CAP) irradiation on oral squamous cell carcinoma (OSCC) and found that CAP irradiation can decrease cell viability by suppressing survival signals and oncogenic miRNA expression.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Zelin Li, Lu Bai, Zhiqiang Xing, Wenxiao Yang, Qiuhua Wu, Guolin Zhang
Summary: In this paper, new composites named PNVCL@TiO2-HSs were designed and prepared, which showed good dispersibility and high catalytic activity in photocatalytic degradation of dyes in wastewater.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ku Youn Baik, Hyun Jo, Se Hoon Ki, Gi-Chung Kwon, Guangsup Cho
Summary: The efficiency of simultaneous treatment of cold atmospheric pressure plasma jet (CAP) and hydrogen peroxide (H2O2) was studied for bacterial disinfection. The combination of CAP with H2O2 showed dramatic synergistic effects in killing bacteria by enhancing reactive species transportation and intracellular oxidation. The non-toxic byproducts of CAP and H2O2 make their combination a promising candidate for clinical applications.
APPLIED SCIENCES-BASEL
(2023)
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
Physics, Fluids & Plasmas
Thibault Darny, Gerard Bauville, Michel Fleury, Stephane Pasquiers, Joao Santos Sousa
Summary: This paper investigates the modification of argon flow in a cold plasma jet under the influence of nanosecond high voltage pulses, examining both single and multiple pulse applications. The research shows that a single pulse is sufficient to disrupt the flow, with multiple pulses revealing a 3D helical arrangement of ripples in the plasma plume. Optimal disturbance of the flow is achieved at specific pulse repetition frequencies for different flow rates, with higher frequencies leading to the gradual disappearance of ripples.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
M. Bakhshzadmahmoudi, S. Jamali, E. Ahmadi
Summary: In this study, we investigated the modification process of polystyrene surface by cold atmospheric pressure plasma jet to achieve a hydrophilic surface. After a certain period of plasma irradiation, the hydrophobic polystyrene surface changed to hydrophilic, and the wettability of the surface increased with time. The evaluation of surface properties was done through measuring water contact angle and Fourier transform infrared spectroscopy, and the relationship between plasma parameters and surface modification of the polymer was discussed.
COLLOID AND POLYMER SCIENCE
(2022)
Article
Physics, Fluids & Plasmas
Luka Hansen, Benjamin M. Goldberg, David Feng, Richard B. Miles, Holger Kersten, Stephan Reuter
Summary: The relationship between energy flux, flow dynamics, and applied electrical power of a nanosecond pulsed cold atmospheric pressure plasma jet in contact with a substrate surface was investigated. The study found a transition from laminar to turbulent flow at a lower Reynolds number than conventional values, and revealed changes in energy flux with different biasing conditions.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Dennis Feibel, Judith Golda, Julian Held, Peter Awakowicz, Volker von der Gathen, Christoph V. Suschek, Christian Oplaender, Florian Jansen
Summary: By adjusting the gas flow, the micro-scaled Atmospheric Pressure Plasma Jet (mu APPJ) can produce different levels of reactive oxygen or nitrogen species (ROS or RNS), leading to varying effects on buffers and human skin fibroblasts (hsFB). The toxicity of CAP treatment on hsFB is correlated with the accumulated H2O2 concentration.
Article
Physics, Fluids & Plasmas
Q. H. Yuan, X. M. Wang, G. Q. Yin, J. Li, C. Z. Dong
CONTRIBUTIONS TO PLASMA PHYSICS
(2016)
Article
Engineering, Chemical
Yong Wang, Qianghua Yuan, Guiqin Yin, Yu Zhang, Yadong Zhang, Yang Li, Jiaojiao Li, Tao Wang, Shuyi Ma
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2016)
Article
Physics, Fluids & Plasmas
Jiaojiao Li, Qianghua Yuan, Xiaowei Chang, Yong Wang, Guiqin Yin, Chenzhong Dong
PLASMA SCIENCE & TECHNOLOGY
(2017)
Article
Chemistry, Physical
Yong Wang, Qianghua Yuan, Guiqin Yin, Yu Zhang, Jiaojiao Li, Yadong Zhang, Yang Li
SURFACE AND INTERFACE ANALYSIS
(2017)
Article
Chemistry, Multidisciplinary
Guiqin Yin, Yong Wang, Qianghua Yuan
JOURNAL OF NANOPARTICLE RESEARCH
(2018)
Article
Physics, Fluids & Plasmas
Zhou Yongjie, Yuan Qianghua, Wang Xiaomin, Yin Guiqin, Dong Chenzhong
PLASMA SCIENCE & TECHNOLOGY
(2014)
Article
Physics, Fluids & Plasmas
Qianghua Yuan, Pei Ren, Yongjie Zhou, Guiqin Yin, Chenzhong Dong
PLASMA SCIENCE & TECHNOLOGY
(2019)
Article
Physics, Multidisciplinary
Qianghua Yuan, Pei Ren, Shanshan Liu, Jingjing Wang, Guiqin Yin
Article
Physics, Multidisciplinary
Guiqin Yin, Shanshan Gao, Zhaohui Liu, Qianghua Yuan
Summary: The discharge characteristics and electronic behavior in low pressure capacitively coupled argon plasma were studied using a radio frequency compensated Langmuir probe. The effects of excitation frequencies and power on various electron parameters were discussed. The experimental results showed complex influences of excitation frequency and power on the electronic behavior in the plasma.
Article
Physics, Multidisciplinary
Qianghua Yuan, Zhaohui Liu, Guiqin Yin
Summary: This study investigates the generation of higher harmonics in capacitively coupled argon plasma (CCP) driven by different frequencies and powers. The number of harmonics in the voltage and current measurements is found to be largest in the dual frequency 8/100 MHz mode, and it increases with the increase of high frequency power. The amplitude of harmonics in this mode falls between the amplitude of harmonics in single frequency modes. The results also show that the electric field and current density reach their maximum values in the bulk center with the increase of high frequency power in the dual frequency mode.
Article
Physics, Fluids & Plasmas
Zhaohui Liu, Qianghua Yuan, Guiqin Yin
Summary: This study uses a nonlinear global model to investigate the high-order harmonics caused by the self-excitation of nonlinear plasma series resonance (PSR) in a geometrically symmetric (8 + 100) MHz capacitively coupled argon plasma. By observing the voltage waveforms and current waveforms measured by an oscilloscope, it is found that the theoretical discharge behavior without considering coupling effect significantly differs from the experimental results. The PSR effect of the matching network plays a crucial role in modulating plasma homogeneity.
PHYSICS OF PLASMAS
(2022)