Article
Materials Science, Ceramics
Wen Ran, Fan Liu, Hao Li, Shaojun Liu
Summary: A layer of nano-sized alumina thin-film was grown on MgTiO3 based ceramic resonator using atomic layer deposition (ALD) to improve the bonding between resonator and metal coatings. The hydroxylation of resonator surface ensures strong bonding between alumina film and ceramic substrate, resulting in a bonding score of 10. The metalized ceramic resonator with alumina thin-film intermediate layer has significantly lower signal insertion loss compared to resonators treated by traditional methods.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Robert Starosta, Tomasz Dyl
Summary: The surface of machine elements is modified to enhance their mechanical properties, with ceramic-metal composite coatings being applied to increase durability. Nickel and iron are commonly used as base materials, with Al2O3 serving as tough particles. Thermal spraying is a widely used method for applying alloy and composite coatings. However, post-processing is necessary to achieve the desired surface quality.
Article
Engineering, Electrical & Electronic
Fengchao Wang, Xiaogai Peng, Yu Sun, Jin Chen, Jiaqi Ju, Yan Jin, Canyun Zhang, Jinfang Kong, Jing Yang, Qinmiao Chen, Xiaoming Dou
Summary: In this study, CZTS thin films were successfully fabricated using a spraying approach combined with rapid thermal annealing, with the sample prepared at 600 degrees C for 45 min exhibiting the best properties. The sample showed good crystallinity, acceptable morphology, and favorable chemical composition for high-performance photovoltaic devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Yong Zhou, Ruijie Zhang, Xiaopeng She, Jing Li, Hongchao Zhao, Yanjie Wang, Yi Chen, Lei Xie, Cheng Zou, Xian Li
Summary: In this study, guest-alkalized cellulose nanofibers were introduced into the host PEDOT:PSS matrix by layer-by-layer spraying assembly method, which significantly improved the sensitivity and response kinetics of the sensor for ammonia detection. The optimized sensor exhibited high sensitivity, low detection limit, fast response and recovery times, excellent repeatability and stability, and worked well under various bending angles and times. This work combines a green material system and a facile film deposition method, providing a promising approach for future wearable optoelectronic systems.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Denis K. Rybin, Igor S. Batraev, Dina Dudina, Arina Ukhina, Vladimir Yu Ulianitsky
Summary: Tungsten coatings with low residual porosity were successfully deposited on copper substrates using detonation spraying, with high bonding strength and hardness. By calculations and experiments, suitable spraying parameters were selected to achieve high-quality coatings, showing potential for plasma-facing components of thermonuclear reactors.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Han Hu, Lin Mao, Shuo Yin, Hanlin Liao, Chao Zhang
Summary: This article reviews the progress of liquid thermal sprayed coating in wear resistance as well as friction reduction in recent years. The influences of microstructure, composition, phase structure and mechanical properties on the tribological properties of typical coatings are investigated. The article also highlights the importance of process optimization and heat treatment in improving the tribological properties of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ghazaleh Azizi Saadatlou, Aatif Ijaz, Dilara Sipahioglu, Saliha Surme, Ibrahim Halil Kavakli, Yunus Gurpinar, Ozlem Yalcin, Amir Motallebzadeh, Pinar Tatar Guner
Summary: Functional coatings with tetra-functional behaviors including anti-corrosion, antibacterial, biocompatible, and anticoagulant properties have been prepared and characterized for the first time in this study. The coatings were deposited on nitinol and 316 L stainless steel substrates via layer-by-layer (LbL) technique using poly(2-ethyl-2-oxazoline)-copolyethyleneimine (PEOX-co-PEI) stabilized silver nanoparticles (AgNPs) and heparin. The coatings exhibited improved corrosion resistance, reduced bacterial colonization, no cytotoxic effect on human cells, and reduced coagulation rate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Multidisciplinary
Fateme Hassan-Aghaei, Mohammad Masoud Mohebi
Summary: This study compares different types of three-layer mesoporous silica coatings with graded porosity fabricated by the evaporation-induced self-assembly method. The effects of layers arrangement on light transmittance and water absorption were investigated. The fabricated multi-layer coatings showed promising prospects for solar glass applications due to their high smoothness, high transmittance, and low water absorption.
Article
Chemistry, Physical
Si Chen, Xiong Zhou, Xueqiang Cao, Jianing Jiang, Longhui Deng, Shujuan Dong
Summary: Thermal barrier coatings (TBCs) based on Mg2SiO4/8YSZ double-ceramic-layer (DCL) were prepared by atmospheric plasma spraying (APS). The DCL coating has a longer lifetime compared to single layer Mg2SiO4 coating, as it enhances the thermal insulation effect, improves sintering resistance, and relieves thermal mismatch between the ceramic layer and bond coat (BC).
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yuxiang Zhao, Yuxue Ge, Xiaochao Jin, Denise Koch, Robert Vassen, Yao Chen, Xueling Fan
Summary: This paper focuses on the oxidation behavior of novel double-ceramic-layer thermal barrier coatings (DCL TBCs) deposited by atmospheric plasma spraying (APS) and suspension plasma spraying (SPS). Results showed that the developed APS-SPS DCL TBCs have better oxidation resistance than the single layer SPS TBC. In terms of oxidation rate and lifetime, segmented APS-SPS TBCs perform slightly better than columnar APS-SPS TBCs. Among the various APS-SPS TBCs, segmented dense APS-SPS TBCs with low vertical crack density appear to have more potential for industrial application.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ivanna D. Kuchumova, Vladislav S. Shikalov, Tomila M. Vidyuk, Arina Ukhina, Tatyana A. Brusentseva, Ivan A. Bataev
Summary: The possibility of fabricating a composite cold-sprayed coatings consisting of partially amorphous alloy reinforcing particles and an aluminum matrix was studied. The deposition of a mixture of pure aluminum and SHS7574 powders on aluminum alloy substrates resulted in high-quality coating with low porosity. Annealing of the composite coatings promoted the formation of reaction layers around the alloy particles, enhancing hardness and wear resistance.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Sneha Samal, Ondrej Tyc, Jan Cizek, Jakub Klecka, Frantisek Lukac, Orsolya Molnarova, Esther de Prado, Zdenek Weiss, Jaromir Kopecek, Ludek Heller, Petr Sittner, Tomas Chraska
Summary: Thick NiTi shape memory alloy coatings were successfully produced on graphite and AISI 304 substrates using radio frequency inductively-coupled plasma spray technology. The coatings exhibited martensitic transformation and shape memory effect, indicating their potential for practical applications. Further optimization is necessary to enhance the microstructural and chemical homogeneity of the coatings.
Article
Chemistry, Multidisciplinary
Yue Yang, Xiao-Ying Zhang, Chen Wang, Fang-Bin Ren, Run-Feng Zhu, Chia-Hsun Hsu, Wan-Yu Wu, Dong-Sing Wuu, Peng Gao, Yu-Jiao Ruan, Shui-Yang Lien, Wen-Zhang Zhu
Summary: Amorphous gallium oxide thin films were grown using plasma-enhanced atomic layer deposition. The films exhibited decreasing band gap energy and increased density as the temperature increased. The higher substrate temperature also resulted in increased surface roughness. Films grown at temperatures below 200 degrees C were amorphous, while the film grown at 250 degrees C showed slight crystallinity.
Article
Chemistry, Physical
Xue Chen, Jiaxian Wan, Hao Wu, Chang Liu
Summary: Passivation of oxide-based thin film transistors still poses a challenge due to the need for thermal treatments, which can impact the transistor characteristics. By reducing the growth temperatures of passivation layers, the performance of TFTs can be maintained within an acceptable range. Among all devices, TFTs with Al2O3 PVLs deposited at 100 degrees C using H2O as oxidant exhibit high mobility, proper threshold voltage, low subthreshold swing, and excellent stability.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
E. Canas, E. Rosado, C. Alcazar, M. J. Orts, R. Moreno, E. Sanchez
Summary: By using thermal spraying from concentrated aqueous suspensions, the possibility of obtaining coatings with significant amounts of preserved zircon has been evaluated successfully. The microstructural features of the coatings and the quantification of zircon content have been characterized.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Jihoon Chung, Deokjae Heo, Gunsub Shin, Dukhyun Choi, Kyungwho Choi, Dongseob Kim, Sangmin Lee
ADVANCED ENERGY MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Jihoon Chung, Handong Cho, Hyungseok Yong, Deokjae Heo, You Seung Rim, Sangmin Lee
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Hyungseok Yong, Deokjae Heo, Banseok Kim, Haksung Moon, Kyungwho Choi, Dongseob Kim, Sangmin Lee
Article
Chemistry, Multidisciplinary
Shigeru Aoyama, Issam Ismail, Yong Tae Park, Christopher W. Macosko, Toshiaki Ougizawa
Article
Chemistry, Physical
Deokjae Heo, Jihoon Chung, Banseok Kim, Hyungseok Yong, Gunsub Shin, Jung-Woo Cho, Dongseob Kim, Sangmin Lee
Article
Chemistry, Physical
Habtamu Gebeyehu Menge, Jin Ok Kim, Yong Tae Park
Article
Polymer Science
Kyung-Who Choi, Jun-Woo Kim, Tae-Soon Kwon, Seok-Won Kang, Jung-Il Song, Yong-Tae Park
Summary: The study developed an eco-friendly, high-performance flame-retardant coating agent by coating polyurethane foam with cationic starch (CS) and montmorillonite (MMT) nano-clay using a spray-assisted layer-by-layer (LbL) assembly. Experimental results confirmed that the coating significantly reduced the heat release rate and total heat release of the foam, improving its fire retardancy. Additionally, durability testing showed the long-lasting flame retardancy of the LbL coating even after more than 1000 compressions.
Article
Chemistry, Physical
Habtamu Gebeyehu Menge, Nghia Dinh Huynh, Hee Jae Hwang, Soyoung Han, Dukhyun Choi, Yong Tae Park
Summary: A high-performance triboelectric film was developed using an ultra-thin, stretchable, and transparent hydrogen-bonded poly(ethylene oxide) and poly(acrylic acid) bilayer through a layer-by-layer method. The film exhibited remarkable output performance and can be designed, folded, and sustainably applied to triboelectric nanogenerators (TENGs).
ACS ENERGY LETTERS
(2021)
Article
Engineering, Multidisciplinary
Habtamu Gebeyehu Menge, Nghia Dinh Huynh, Chungyeon Cho, Dukhyun Choi, Yong Tae Park
Summary: This study successfully enhances the output performance of highly deformable triboelectric nanogenerators (TENGs) using a designable functional polymer nanocomposite layer. The TENG with this layer showed improved voltage and current density, and could also maintain its mechanical characteristics under deformation. The study demonstrates the potential of using the layer-by-layer method for sustainable energy sources in flexible electronic devices.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Teklebrahan Gebrekrstos Weldemhret, Dong-Woo Lee, M. N. Prabhakar, Yong Tae Park, Jung Il Song
Summary: A phosphorus-doped mesoporous carbon-filled coating was successfully deposited on polyurethane foam using a layer-by-layer assembly method. The coated foam exhibited self-extinguishing properties and reduced heat release and smoke production. The coating also enabled the fabrication of a high-performance self-powered sensor.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Habtamu Gebeyehu Menge, Nghia Dinh Huynh, Kyungwho Choi, Chungyeon Cho, Dukhyun Choi, Yong Tae Park
Summary: Harvesting sustainable energy for portable electronic devices is made possible through the use of triboelectric nanogenerators (TENGs). This study introduces thin, translucent films made from chitosan (CH) and alginate (AL), which display remarkable antimicrobial and triboelectric properties. By varying the deposition of CH and AL, the dependence of TENG behavior on film thickness is investigated, leading to the creation of a high-performance TENG with a thickness of 0.87 μm. Additionally, a shape-adaptive nanogenerator is designed for skin-patch applications, demonstrating high transparency, mechanical stability, and versatility.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Habtamu Gebeyehu Menge, Min Woo Kim, Sangmin Lee, Yong Tae Park
Summary: This study introduces a chemically cross-linked graphene-based electrode with a silicone elastomer, which successfully assembles a multi-layered conductive electrode on a modified silicone elastomer. The chemically cross-linked electrode exhibits significantly higher surface charge density, leading to a 2-fold improvement in output power for droplet-driven TENGs. It also demonstrates remarkable stability and resistance to repeated mechanical deformations, and can be used as a strain sensor with high sensitivity.
Article
Chemistry, Multidisciplinary
Teklebrahan Gebrekrstos Weldemhret, Dong-Woo Lee, M. N. Prabhakar, Aamir Iqbal, Chong Min Koo, Yong Tae Park, Jung Il Song
Summary: In this study, an ultrafast, simple, and cost-effective surface modification method based on the evaporation of a low boiling point solvent is proposed to prepare a multifunctional graphene nanoplatelet (GNP)-decorated polyurethane foam (GNP@PUF). The resulting foam exhibits excellent flame retardancy, can function as a piezoresistive sensor, and has good electromagnetic interference (EMI)-shielding performance.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Habtamu Gebeyehu Menge, Min Woo Kim, Sangmin Lee, Yong Tae Park
Summary: Thin films of poly(allylamine hydrochloric acid) (PAH) and poly(phytic acid) (PA) were assembled on graphene-based substrates via layer-by-layer (LbL) assembly. This LbL assembly produced novel, cheap, facile, and replicable thin films with controlled surface chemical compositions. The film was used as the positive triboelectric material, significantly improving the performance of a triboelectric nanogenerator (TENG).
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Habtamu Gebeyehu Menge, Soo Hyun Jo, Yong Tae Park
Summary: A thin poly(diallyldimethylammonium chloride) and poly(4-styrene-sulfonic acid) multilayered film was prepared via a facile and cheap layer-by-layer self-assembly technique for potential use as a positive tribomaterial in triboelectric nanogenerators, showing high electrical output performance. The optimized TENG device exhibited an impressive performance, reaching 215 V and 79 mA m(-2) in the single-electrode mode, lighting up 39 green light-emitting diodes with just a hand tap.
ACS APPLIED ELECTRONIC MATERIALS
(2021)