Article
Chemistry, Physical
Zachary Jeckell, Dhruval Patel, Andrew Herschberg, Tag Choi, David Barlaz, Lucia Bonova, Ivan Shchelkanov, Brian Jurczyk, David Ruzic
Summary: This study demonstrates the barrier coating and adhesion promoting properties of silica-based coatings deposited using an atmospheric pressure plasma torch, showing their potential application in lightweight manufacturing, especially in water protection. The films showed significant improvement in shear stress compared to controls and maintained strong shear strength even after exposure to water soak, showcasing their capabilities as a water barrier.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
Xinming Ren, Beiyue Ma, Lulu Wang, Guoqi Liu, Jingkun Yu
Summary: By incorporating silicon kerf waste, lightweight magnesia refractory ceramics with a closed porosity of 6.5% were successfully prepared, suitable for the working lining of metallurgical furnaces.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Applied
Maren Dworschak, Niklas Kohlmann, Filip Matejka, Pavel Galar, Lorenz Kienle, Jan Schaefer, Jan Benedikt
Summary: The HelixJet plasma source was utilized to synthesize silicon nanoparticles (Si-NPs) operating under atmospheric pressure. By adjusting the operational parameters, Si-NPs with different sizes, crystallinity, structure, and photoluminescence properties were achieved. The addition of H-2 and high RF powers led to the formation of crystalline nanoparticles with strong photoluminescence intensity, which could be tuned by controlling the synthesis parameters. Post-synthesis annealing allowed for the synthesis of large crystalline nanoparticles. The study also involved design improvements for the HelixJet plasma source, enhancing its stability and enabling continuous long-term operation.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Physics, Applied
Jannatul Ferdous Mousumi, Haider Ali, Geoffrey Gregory, Christian Nunez, Kenneth Provancha, Sven Seren, Heiko Zunft, Kristopher O. Davis
Summary: In this work, a high quality tunnel oxide passivating, electron-selective contact was developed using in-situ phosphorus-doped polycrystalline silicon (poly-Si) layer deposited via an in-line atmospheric pressure chemical vapor deposition (APCVD) process. The contact demonstrated excellent surface passivation quality and high implied open circuit voltage. By depositing poly-Si on n-type crystalline silicon passivated with silicon oxide and annealing, the contact achieved impressive performance characteristics such as high minority carrier lifetime and low saturation current density.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(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, Multidisciplinary
Shan Zhu, Xiaodong Li, Zhikang Pan, Xingchen Jiao, Kai Zheng, Li Li, Weiwei Shao, Xiaolong Zu, Jun Hu, Junfa Zhu, Yongfu Sun, Yi Xie
Summary: By designing two-dimensional oxide semiconductors and utilizing active O- species on ZnO nanosheets to activate the C-H bond of CH4, the selective production of liquid oxygenates has been successfully achieved.
Article
Engineering, Manufacturing
Pengfei Tan, Raj Kiran, Kun Zhou
Summary: The study uses a powder-scale multi-physics model to investigate keyhole dynamics and porosity in SLM products under sub-atmospheric pressure. Simulation results show that reducing sub-atmospheric pressure can increase melt pool depth and improve keyhole stability.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Analytical
Sebastian van Wasen, Yi You, Sebastian Beck, Jens Riedel, Dietrich A. Volmer
Summary: The composition of acoustically levitated droplets was investigated using a combination of mid-IR laser evaporation and subsequent postionization via secondary electrospray ionization. It was found that the release of the analyte strongly depended on the analytes, and the substance specific delayed release allowed for baseline-separated discrimination of the analytes.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Bin Sun, Lei Cheng, Chong-Yang Du, Jing-Ke Zhang, Yong-Quan He, Guang-Ming Cao
Summary: The study revealed that the corrosion resistance of oxide scale is closely related to defects, and the protective effect of oxide scale diminishes as corrosion progresses.
Article
Chemistry, Physical
Jheng-Yun Lai, Cheng-Che Hsu, Jian-Zhang Chen
Summary: In this study, rGO-Mn(NO3)2·4H2O was converted into rGO-MnOx using nitrogen atmospheric-pressure plasma jet (APPJ) and/or tube furnace. The SCs processed by APPJ showed better performance compared to furnace-processed ones. Additionally, the rGO-MnOx SC outperformed the previously reported rGO-SnOx SC.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemistry & Molecular Biology
Sung Un Kang, Chul-Ho Kim, Sanghyun You, Da-Young Lee, Yu-Kwon Kim, Seung-Joo Kim, Chang-Koo Kim, Hee-Kyung Kim
Summary: The efficiency of plasma surface modifications depends on the operating conditions. This study investigated the effect of chamber pressure and plasma exposure time on the surface properties of 3Y-TZP with N-2/Ar gas. The atmospheric plasma treatments increased zirconia's electron donation (?(-)) capacity, while the vacuum plasma treatments decreased ?(-) parameter with increasing times.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Tzer-Liang Hu, Guan-Yu Chen, Shih-Chen Shi, Jason Hsiao Chun Yang
Summary: A bioactive peptide has been successfully grafted onto nano-CuO impregnated Tencel membranes via a simple and rapid method, showing excellent antimicrobial properties and promoting fibroblast cell viability.
Article
Materials Science, Ceramics
Jung-Hsien Chang, Ming-Feng Lin, Yu-Lin Kuo, Chii-Rong Yang, Jian-Zhang Chen
Summary: In this study, rGO-SnO2 nanocomposites were fabricated using a nitrogen atmospheric-pressure plasma jet (APPJ) for supercapacitor electrodes. The optimal processing time of 300 s resulted in the best areal capacitance of 97.53 mF/cm(2) with a capacitance retention rate of approximately 85% after a 10,000-cycle test. Additionally, the capacitance increased by 11% after a 1000-cycle bending test, indicating improved performance with mechanical bending.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
S. Moser, C. Kenel, L. A. Wehner, R. Spolenak, D. C. Dunand
Summary: 3D printing and sintering were used to fabricate porous Si scaffolds for lithium-ion batteries, with a hierarchically-porous architecture created to accommodate volume changes during (dis)charging. The influence of sintering parameters on Si strut porosity and resulting properties was studied, showing that optimal performance is achieved at around -50% Si strut porosity.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
Kyoung-Bo Kim, Moojin Kim
Summary: This paper investigates the formation of silicon dioxide thin films on silicon wafers using APP processes at room temperature and 400 degrees C. The study reveals that the formed thin films have heat insulation properties and no surface defects. The experimental results also indicate that films formed at higher temperature have higher density compared to those formed at room temperature.
JOURNAL OF CERAMIC PROCESSING RESEARCH
(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)
