Review
Chemistry, Analytical
Theo Lienard-Mayor, Myriam Taverna, Stephanie Descroix, Thanh Duc Mai
Summary: This study provides a comprehensive overview of different strategies for combining droplet-based sample handling and preparation with electrophoretic separation. It focuses on three principal interfacing strategies, including droplets in immiscible phases, digital microfluidics with electrowetting-on-dielectric principle, and inkjet droplet generation. Different instrumental developments, pros and cons of designs, and application demonstrations of droplet-interfaced electrokinetic strategies are discussed.
ANALYTICA CHIMICA ACTA
(2021)
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
Chemistry, Analytical
Hongyu Nie, Zhihui Li, Xiaokun Wang, Rongmeng Gu, Hongyan Yuan, Yong Guo, Dan Xiao
Summary: In this study, a multi-input capacitively coupled contactless conductivity detector (MICD)-D-4 was proposed with high sensitivity, and further improved by combining it with differential detection to form (DFMICD)-D-4. The new detector showed improved performance compared to traditional single-input and double-input detectors, with a higher response-to-baseline ratio and a low limit of detection (0.7 nM). It can be applied to the detection of low-conductivity solutions and total dissolved solids (TDS) analysis, demonstrating its versatility and superiority over standard conductivity meters.
Article
Physics, Applied
J. Liu, L. Nie, Y. Xian, X. Lu
Summary: The study found that adding a small amount of nitrogen or oxygen to argon can make the plasma channel smooth, while the rotational frequency of the electrode does not affect the appearance of the plasma channel. Optical emission spectra show that adding O-2/N-2 reduces the emission intensity of transitions from excited argon levels to metastable states, leading to a transition of the discharge channel's nature.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jia-Shiuan Tsai, Jian-Zhang Chen
Summary: This study investigated the impact of oxygen impurity on the inlet gas in a nitrogen atmospheric pressure plasma jet (APPJ). A numerical model was developed to simulate the nitrogen APPJ considering fluid dynamics, heat transfer, mass transfer, diffusion, and chemical reactions. Experimental tests were conducted to verify the plasma temperature characteristics on the treated surface. The findings revealed that the plasma temperature decreased with increasing oxygen impurity, affecting the excited and neutral species composition.
APPLIED SCIENCES-BASEL
(2023)
Article
Physics, Applied
Jingkai Jiang, V. S. Santosh K. Kondeti, Gaurav Nayak, Peter J. Bruggeman
Summary: This study presents a detailed comparison between modeling and experimental results to elucidate the plasma chemistry in a humid atmospheric pressure plasma jet. It is found that there is a significant difference in the measured concentration of H due to boundary layer effects. Additionally, the model underestimates the concentration of H and O-2, and overestimates the concentration of H2O2. These findings provide insights into the H2O vapor chemistry in low-temperature plasmas.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
K. Gazeli, M. Hadjicharalambous, Eleftherios Ioannou, O. Gazeli, C. Lazarou, C. Anastassiou, P. Svarnas, V. Vavourakis, G. E. Georghiou
Summary: We developed an in silico model to simulate the response of B16F10 melanoma cells to a helium atmospheric pressure plasma jet (APPJ) and doxorubicin drug (DOX). The simulation results showed that increasing plasma duration and DOX concentration resulted in increased cytotoxicity and a higher apoptosis probability compared to mitosis probability. Furthermore, combining plasma treatment and drug application enhanced cell cytotoxicity. This in silico model is valuable in the field of plasma medicine for understanding the response of different cancers to APPJ and cancer drugs.
APPLIED PHYSICS LETTERS
(2022)
Review
Chemistry, Applied
Petr Tuma, Frantisek Opekar, Pavel Dlouhy
Summary: This paper provides a comprehensive survey of using capillary and microchip electrophoresis with contactless conductivity detection for the analysis of drinking water, beverages, and food items. It highlights the analysis of food on microchips and modern trends such as dual-opposite injection. CE/(CD)-D-4 is characterized by its universality, analysis speed, simple sample preparation, and minimal sample consumption.
Article
Nanoscience & Nanotechnology
Nazli Turan, Mortaza Saeidi-Javash, Jiahao Chen, Minxiang Zeng, Yanliang Zhang, David B. Go
Summary: The passage discusses the application of atmospheric pressure nonthermal plasmas in sintering printed films, demonstrating the surface modifications achieved through nonthermal plasmas under ambient conditions. These results offer a new direction for future electronic device manufacturing, showcasing the potential of utilizing nonthermal plasmas for additive manufacturing on flexible and low-melting-point materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Multidisciplinary
Keita Shimada, Ryuki Morita, Masayoshi Mizutani, Tsunemoto Kuriyagawa
Summary: Powder jet deposition (PJD) is a spray coating method that can be done under atmospheric pressure and room temperature. By applying an atmospheric-pressure plasma jet (APPJ) assistance, the deposition rate of PJD can be increased.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Thushara N. Samarasinghe, Yong Zeng, Carey K. Johnson
Summary: The separation of a set of model proteins was tested on a microchip electrophoresis analytical platform, with the best separation and resolution achieved on a silica-nanoparticle colloidal array chip.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Physics, Applied
Li Wu, Xianyu Zhang, Tao Liu, Wencong Zhang, Junwu Tao, Fei Cheng
Summary: This Letter presents an atmospheric pressure low power microwave-induced air plasma source operating at 2.45 GHz. The device can self-ignite air and generate plasma with only 50 W microwave input power, without any additional trigger. Its sustaining power is as low as 10 W, and the gas temperature of plasma tail flame is about 32 degrees C measured by a fiber optic thermometer. Spectroscopic measurements revealed the presence of strong OH(A(2)S(+)? X-2?) bands at 306-310 nm and oxygen atomic lines O-I (3p5P? 3s5S) at 777.1 nm and O-I (3p3P?3s3S) at 844.6 nm. Furthermore, NO- ?(A(2)S(+)?X-2?(r)) from 200 to 300 nm was also detected in the air plasma jet. This portable plasma apparatus shows potential for air plasma applications in the biomedical fields.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Coatings & Films
Fang Shao, Yin Zhuang, Jinxing Ni, Jing Sheng, Huayu Zhao, Shunyan Tao, Kai Yang
Summary: In this study, Al2O3 and Al2O3-Ca2SiO4 coatings were deposited by atmospheric plasma spraying technique. The introduction of Ca2SiO4 into Al2O3 coatings has been shown to improve the electrical resistivity under low, middle, and ambient humidities. Al2O3-5 wt% Ca2SiO4 may be a promising material for industrial applications based on the insulation resistance values and mechanical properties of the considered coatings.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
Yutian Yu, Li Wu, Qiang Chen, Naoki Shinohara, Kama Huang
Summary: This paper presents a numerical model to simulate the motion trajectory of an atmospheric pressure plasma jet under an external nonuniform electric field. The model treats the plasma jet as equivalent particles based on its dielectric properties and motion characteristics. The model demonstrates short calculation times and excellent agreement with experimental observations, providing an effective and efficient method for predicting and controlling plasma jet motion trajectory.
Article
Engineering, Chemical
Wameedh Adress, W. G. Graham
Summary: In this study, the influences of electrode geometrical shapes on the optical properties of two non-thermal atmospheric pressure plasma jets were investigated. The results demonstrated the role of low temperature plasma in catalysis, showing a significant enhancement in conversion activity at low activation temperatures compared to conventional thermal activation.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2022)
Article
Physics, Applied
Ladislav Moravsky, Bartosz Michalczuk, Jana Hrda, Satoshi Hamaguchi, Stefan Matejcik
Summary: Ion mobility spectrometry was employed to monitor the degradation of phthalate vapors by corona discharge, finding high removal efficiencies and energetic degradation efficiencies, as well as identifying various byproducts and degradation mechanisms.
PLASMA PROCESSES AND POLYMERS
(2021)
Article
Veterinary Sciences
Andrea Necasova, Alena Pechova, Robert Bodor, Marian Masar
Summary: This study aimed to evaluate the concentrations of glutathione in the blood of dairy cows and found that the phase of lactation had a significant impact on T-GSH and GSH levels, while lactation number and body condition score had no effect. The research suggests that glutathione may be a promising tool for monitoring the health and welfare of the herd.
VETERINARNI MEDICINA
(2021)
Correction
Biochemical Research Methods
Peter Troska, Ewa Pobozy, Zuzana Nemethova, Marian Masar
Review
Physics, Multidisciplinary
S. A. Pshenichnyuk, N. L. Asfandiarov, A. S. Vorob'ev, S. Matejcik
Summary: This paper presents the latest achievements in experimental and theoretical studies of resonance scattering of low-energy electrons from molecular targets, leading to the formation and decay of negative ions. The focus is on dissociative electron attachment spectroscopy for studying the dynamics of molecules with an excess electron. The paper aims to draw attention to these rapidly developing studies abroad that have been scarcely presented in domestic literature.
Article
Chemistry, Physical
Juraj Orszagh, Anita Ribar, Marian Danko, Dennis Bodewits, Stefan Matejcik, Wieslawa Barszczewska
Summary: This study investigated the excitation of nitromethane through electron impact and recorded the emission spectrum at different electron energies. New dissociative excitation channels were observed, and the emission spectrum had significantly higher resolution compared to previous studies.
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
Biochemical Research Methods
Vahideh Ilbeigi, Younes Valadbeigi, Ladislav Moravsky, Stefan Matejcik
Summary: In this study, ion mobility spectrometry (IMS) equipped with a corona discharge (CD) ion source was used to measure three auxin plant hormones. The effects of ion polarity and dopants on separation performance were investigated.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Branislav Zabensky, Robert Bodor, David Makata, Roman Szucs, Marian Masar
Summary: An analytical test procedure for the direct determination of trace levels of perchlorate in drinking water by isotachophoresis combined with capillary zone electrophoresis was developed. The method exhibited excellent repeatability, linearity, and quantitation limit for perchlorate, making it more sensitive and robust than ion chromatography.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Biochemical Research Methods
Ladislav Moravsky, Arian Fateh Borkhari, Alexey Yu Adamov, Alexey A. Sysoev, Peter Papp, Stefan Matejcik
Summary: This study investigated the atmospheric pressure chemical ionization of selected chlorinated hydrocarbons using ion mobility spectrometry and mass spectrometry techniques. The experiments revealed the formation of Cl- ions and [O2H center dot center dot Cl](-) ions for all substances, with the latter being absent in perchlorinated substances. Quantum-chemical calculations supported the experimental observations.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2022)
Article
Physics, Fluids & Plasmas
Jan Durian, Peter Hartmann, Stefan Matejcik, Andrew R. Gibson, Zoltan Donko
Summary: A low-pressure capacitively coupled RF helium discharge with a structured electrode was investigated experimentally and via kinetic simulations. The experiment used phase resolved optical emission spectroscopy to provide information on the excitation dynamics of high energy electrons with high spatial and nanosecond temporal resolution. The numerical studies were based on a newly developed particle-in-cell/Monte Carlo collisions code and studied the fluxes of He+ ions and vacuum ultraviolet photons incident on different surfaces.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Lubos Niznansky, Denisa Osinova, Roman Kuruc, Alexandra Hengerics Szabo, Andrea Szoradova, Marian Masar, Zofia Niznanska
Summary: This review provides an overview of the biological activity, production methods, pharmacokinetic parameters, and toxicological risks of taxanes. It highlights the significance and risk of poisonings caused by Taxus plant extracts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agriculture, Multidisciplinary
Vahideh Ilbeigi, Younes Valadbeigi, L'udmila Slovakova, Stefan Matejcik
Summary: In this study, a method combining solid phase microextraction (SPME) with multicapillary column (MCC) and ion mobility spectrometry (IMS) was developed to detect MeSA in tomato leaves. The two-dimensional separation provided by MCC and IMS enabled efficient detection of MeSA, and the negative polarity operation reduced interferences.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Biochemical Research Methods
Vahideh Ilbeigi, Younes Valadbeigi, Ladislav Moravsky, Stefan Matejcik
Summary: Formic acid (FA) is a powerful dopant in atmospheric pressure chemical ionization (APCI) for ion mobility spectrometry (IMS) and mass spectrometry (MS). The dopant produces HCOO-&FA reactant ions and improves detection sensitivity, suppression of fragmentation, and changes in ion mobilities for analytes with suitable molecular structures and gas acidity. The ionization mechanism depends on the gas-phase acidity of the compounds.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2023)
Article
Chemistry, Analytical
Arian Fateh Borkhari, Ladislav Moravsky, Stefan Matejcik
Summary: An Atmospheric Pressure Field Effect (APFE) ionization source has been developed for positive and negative polarities in drift tube ion mobility spectrometry. The formation of negative and positive ions in synthetic air was compared with the Atmospheric Pressure Corona Discharge (APCD) ionization source. The APFE ionization source showed reliable generation of reactant ions in both polarities, making it a promising chemical ionization source at atmospheric pressure.
ANALYTICAL METHODS
(2022)
