Article
Chemistry, Multidisciplinary
Mahboobeh Ejtemaei, Sepehr Sadighi, Mehdi Rashidzadeh, Sirous Khorram, Jan O. Back, Simon Penner, Michael F. Noisternig, Dariush Salari, Aligholi Niaei
Summary: This study investigates the surface treatment of kaolin and attapulgite/zeolite A extrudates using argon glow discharge plasma. The results show that plasma treatment increases surface area and pore volume, but decreases the weak acidic site density of the extrudates. The plasma-treated sample exhibits improved resistance to coke formation compared to the untreated one.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: By combining ICP OES with a novel FIGA mode, a more sensitive determination of Hg was achieved. The proposed method showed a much higher analytical signal for Hg compared to conventional PN-ICP OES, resulting in a significantly improved detection limit (0.035 μg/L) and measurement precision (2.5%). It also offered a 4 times lower detection limit compared to CVG-ICP OES (0.15 μg/L).
Article
Materials Science, Coatings & Films
Kei Kiyokawa, Reiko Saito, Masato Morita, Tetsuo Sakamoto
Summary: This article investigates the impact of metal redeposition on the sputtering rate in ion sputtering and finds that redeposition significantly enhances the rate. The experimental data align with the model equation, explaining the sputtering by desorbed redeposited metal and the reduction of sublimation enthalpy by adsorbed redeposited metal. This finding provides new insights for the application of sputtering technology.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Chemistry, Multidisciplinary
Qianhan Han, Ying Guo, Yarong Zhang, Jing Zhang, Jianjun Shi
Summary: In this experimental study, a plasma plume generated by radio frequency atmospheric pressure glow discharge was enhanced in terms of length and intensity by pulsed discharge. The enhanced plume was used to improve the O/C ratio of carbon fiber.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Qian Zhang, Yang Li, Hua Li, Yuhan Zhang, Lishan Zhang, Shan Zhong, Xiaohua Shu
Summary: Fe-based composites have been studied extensively for their ability to improve energy utilization efficiency in plasma-based contaminant removal. However, the slow transformation of Fe(III) to Fe(II) compromises the energy efficiency and catalytic activity. In this study, FeS2 was introduced into a glow discharge plasma reactor to enhance the removal efficiency of tylosin. The presence of FeS2 resulted in increased generation of radicals and nonradicals, which played a critical role in tylosin abatement. Additionally, the electron-donating ability of FeS2 accelerated the conversion of Fe(III) to Fe(II), further facilitating radical generation. Furthermore, FeS2 promoted acid solution self-adjustment and improved the heterogeneous Fenton reaction and adsorption of tylosin. The integration of glow discharge plasma with FeS2 offers a promising technique for organic wastewater treatment.
Article
Polymer Science
Eun Young Jung, Choon-Sang Park, Hyo Jun Jang, Shahzad Iqbal, Tae Eun Hong, Bhum Jae Shin, Muhan Choi, Heung-Sik Tae
Summary: This study investigates a dielectric tube reactor with a single pin electrode for depositing polyaniline thin films. The experimental results show that the configuration of the pin electrode, bluff-body height, and gas flow rate affect the generation of plasma and the deposition of polyaniline. In some cases, intense glow-like plasma generates reactive nitrogen species and excited argon radicals, which contribute to the fragmentation and recombination of polyaniline and result in increased film thickness and deposition rate.
Article
Energy & Fuels
Mahboobeh Ejtemaei, Sepehr Sadighi, Mehdi Rashidzadeh, Sirous Khorram, Jan O. Back, Parastoo Delir Kheyrollahi Nezhad, Simon Penner, Michael F. Noisternig, Dariush Salari, Aligholi Niaei
Summary: In this study, the surface modification of attapulgite-bounded zeolite A by N-2/O-2 glow discharge plasma was investigated. It was found that the O-2 plasma treatment increased the surface acidity, while the N-2 plasma treatment decreased the acidity. The N-2 plasma-treated samples showed reduced coke formation and higher water sorption capacity.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Physics, Applied
Yao E. Kovach, Zhehui Wang, John E. Foster
Summary: A study on the emission of luminous particles from the liquid anode surface of an atmospheric pressure DC glow discharge revealed a correlation with the plasma forming patterns on the liquid electrolyte surface. Using high-speed imaging and electron microscope technologies, the characteristics and morphology of the emitted particles were analyzed, leading to the proposal of a mechanism likely driven by the Taylor cone effect.
APPLIED PHYSICS LETTERS
(2021)
Review
Spectroscopy
Brian T. Molnar, Jacob T. Shelley
Summary: Plasmas have been used as ionization sources in mass spectrometry experiments since the early days of Thomson and Aston. Plasma ion sources were chosen because they were one of the few known sources of gas-phase ions at the time and were relatively easy to set up and operate. The development of plasma ionization has led to advancements in mass spectrometry and laid the foundation for ionization approaches, mass analysis, and detection methods for very large molecules.
MASS SPECTROMETRY REVIEWS
(2021)
Article
Chemistry, Applied
Krzysztof Greda, Pawel Pohl
Summary: A new method of optical emission spectrometry (OES) using micmplasma source was developed for the determination of Na, K, Mg, Ca, and Zn in wine, without the need for acid digestion. The study also found that red wines have higher levels of K and Mg, and different grape varieties can be distinguished based on the concentrations of K and Ca.
Article
Chemistry, Applied
Sing Wei Ng, Peng Lu, Aleksandra Rulikowska, Daniela Boehm, Graham O'Neill, Paula Bourke
Summary: The study investigated the structural modifications and antigenic response of major milk protein allergens induced by non-thermal treatment using atmospheric cold plasma. Results showed a reduction in the intensity of casein and alpha-lactalbumin bands after plasma treatment, while beta-lactoglobulin intensity remained unchanged. Changes in protein secondary structure, amino acid compositions, and antigenicity were observed post plasma treatment.
Article
Biotechnology & Applied Microbiology
Lwin Moe Aung, Jerry Chin-Yi Lin, Eisner Salamanca, Yi-Fan Wu, Yu-Hwan Pan, Nai-Chia Teng, Haw-Ming Huang, Ying-Sui Sun, Wei-Jen Chang
Summary: In order to enhance the bioactivity of zirconia ceramic, surface functionalization with fibronectin protein was conducted. The zirconia surface was cleaned using glow discharge plasma (GDP)-Argon, and then treated with allylamine at different powers and immersed in different fibronectin concentrations. The surface modification led to the attachment of irregularly folded protein-like substances and improved surface roughness and hydrophilicity. The allylamine and fibronectin composite grafted surface significantly stimulated the bioactivity of osteoblast-like cells and can be potentially used in dental implant applications.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
H. El-Naggar, M. A. Abd Al-Halim, Akmal S. Gaballa, M. A. Hassouba
Summary: Surface properties of cotton/polyester blended textiles were modified using dc low-pressure air discharge. The results showed improved dyeability and hydrophilicity of the treated textiles, as well as increased roughness and reduced crystallinity on the surface. These improvements were found to be dependent on treatment time.
Article
Materials Science, Multidisciplinary
Qing-Nan Xu, Hong-Li Wang, Jian-Ping Liang, Yan Zhang, De-Zheng Yang
Summary: In this study, the hydrophilic properties of PTFE were enhanced using liquid-film DBD at atmospheric pressure, which was compared with air DBD. The results showed that liquid-film DBD generated more active species, had a more stable discharge pattern, and a lower gas temperature compared to air DBD. The surface modification of PTFE by liquid-film DBD did not cause damage and introduced more N- and O-containing functional groups.
Article
Chemistry, Applied
M. Magureanu, N. B. Mandache, F. Gherendi, C. Rizescu, B. Cojocaru, A. Primo, H. Garcia, V. Parvulescu
Summary: Plasma treatment in a hydrogen glow discharge significantly improves the catalytic activity of graphene oxide by inducing defects and surface acidic species. Optimal treatment can be achieved by tuning the electron temperature and dissociation of molecular hydrogen in the plasma, as revealed by optical emission spectroscopy diagnostics.
Review
Materials Science, Multidisciplinary
Chuanlong Ma, Anton Nikiforov, Dirk Hegemann, Nathalie De Geyter, Rino Morent, Kostya (Ken) Ostrikov
Summary: This review presents recent advances in low-temperature plasma processing for controlling surface wettability. The underlying mechanisms, key features of fabrication processes, and water-surface interactions are discussed. It aims to guide further development of advanced functional materials.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Review
Agriculture, Multidisciplinary
Dravin Pratap Singh, Gopinath Packirisamy
Summary: Modern lifestyle diseases (LSD) such as cancer, diabetes, hypertension, cardiovascular, and thyroid disease are commonly seen among people of different age groups. One of the root causes of these diseases is the type of food that we consume. Staple crops are grown with the use of agrochemicals, which leave traces in our food. Additionally, the food is processed using saturated fats, toxic chemicals, and additives, compromising its nutritional value and weakening the immune system.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Review
Biotechnology & Applied Microbiology
Tim Egghe, Rino Morent, Richard Hoogenboom, Nathalie De Geyter
Summary: Antibacterial coatings are essential for preventing implant-related infections. Plasma polymer and polydopamine-based coatings are the most widely studied and versatile approaches, capable of synthesizing different types of antibacterial films. However, more fundamental research is needed before these coatings can be widely used.
TRENDS IN BIOTECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Jia Tian, Wenzheng Liu, Anton Nikiforov, Nathalie De Geyter, Rino Morent
Summary: An innovative double-ejection micro-cathode arc thruster (AC(d)-mu CAT) was proposed and compared with a traditional mu CAT. The results showed significant improvements in propulsion performance, plasma parameters, and directional propagation speed of the plasma plume for the new micro-cathode arc thruster.
Article
Food Science & Technology
Klaas De Baerdemaeker, Amber Van Reepingen, Anton Nikiforov, Bruno De Meulenaer, Nathalie De Geyter, Frank Devlieghere
Summary: In recent years, the use of non-thermal plasma (NTP) as an alternative to thermal processing in food treatment has been investigated. This type of gas contains reactive oxygen and nitrogen species (RONS) that can effectively kill bacterial cells. However, the presence of food matrix components can interfere with the bactericidal effect of NTP treatment.
Article
Chemistry, Analytical
Pi-Guey Su, Chih-Chang Hsu
Summary: A flexible humidity sensor was developed by integrating sol-gel processing, free radical polymerization, and self-assembly techniques. The sensor incorporated gold nanoparticles and a trifunctional organosilica compound. The sensor demonstrated high sensitivity, minimal hysteresis, and rapid response time across a broad range of working humidity levels.
Article
Nanoscience & Nanotechnology
Maarten Debruyne, Sander Borgmans, Sambhu Radhakrishnan, Eric Breynaert, Henk Vrielinck, Karen Leus, Andreas Laemont, Juul De Vos, Kuber Singh Rawat, Siebe Vanlommel, Hannes Rijckaert, Hadi Salemi, Jonas Everaert, Flore Vanden Bussche, Dirk Poelman, Rino Morent, Nathalie De Geyter, Pascal Van Der Voort, Veronique Van Speybroeck, Christian V. Stevens
Summary: Covalent organic frameworks (COFs) are a new type of photoactive organic semiconductors with ordered structures and high surface areas. The band gaps of COFs can be tuned by the choice of building blocks and linkages, making them tailor-made for specific (photocatalytic) applications. However, there are still many unexplored building blocks for COFs as photocatalytic moieties, and the scope of photocatalyzed reactions by COFs is limited.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Vinay Kumar, Gopinath Packirisamy
Summary: The development of 3D scaffold-based in vitro tumor models using sodium alginate and sodium alginate/silk fibroin porous beads allows for improved drug screening and tissue engineering. The tumor models showed a high tendency for cell adhesion, proliferation, and formation of tumor-like aggregates, outperforming the 2D cell culture model. Additionally, the use of superparamagnetic iron oxide nanoparticles loaded into the porous beads demonstrated the ability to induce apoptosis under high magnetic fields.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Electrical & Electronic
Keenan Zhihong Yap, Wei Yin Lim, Ashish Kalkal, P. Gopinath, Narayanan Ramakrishnan
Summary: In this study, a capacitive sensor coated with graphene oxide (GO) was developed for humidity sensing. The GO was directly deposited on gold interdigital electrodes (IDE) using electrophoretic deposition (EPD) technique, and functionalized with magnesium ions. The sensor exhibited ultrahigh sensitivity and stability at different humidity levels.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Multidisciplinary
Jonas Everaert, Karen Leus, Hannes Rijckaert, Maarten Debruyne, Kristof Van Hecke, Rino Morent, Nathalie De Geyter, Veronique Van Speybroeck, Pascal Van Der Voort, Christian V. Stevens
Summary: Covalent triazine frameworks (CTFs) based on polydentate ligands are promising catalyst supports that combine the reactivity of homogeneous catalysts with the robustness and recyclability of heterogeneous ones. In this study, a rhodium (III) complex was immobilized on a bipyridine-based CTF for the transfer hydrogenation of N-heteroarenes in water using sodium formate as the hydrogen source. The immobilized catalyst showed excellent activity for various quinoxalines and other N-heteroarenes, and maintained high activity during recycling, making it suitable for continuous flow synthesis.
Article
Chemistry, Multidisciplinary
Maojun Deng, Jiamin Sun, Andreas Laemont, Chunhui Liu, Linyang Wang, Laurens Bourda, Jeet Chakraborty, Kristof Van Hecke, Rino Morent, Nathalie De Geyter, Karen Leus, Hui Chen, Pascal van der Voort
Summary: The photocatalytic activity of crystalline porous covalent organic frameworks (COFs) was significantly enhanced by extending their π-conjugation system through a post-sulfurization process. Thiazole-linked COFs exhibited the best photocatalytic performance, with a rate 5.8 and 3.7 times higher than imine-linked COFs 4PE-N and 4PE-TT, respectively.
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
