Article
Materials Science, Coatings & Films
Her-Hsiung Huang, Chia-Fei Liu, Shan Wang, Chiang-Sang Chen, Jean-Heng Chang
Summary: Ti6Al7Nb alloy, treated with nitrogen plasma immersion ion implantation (N-PIII), formed a TiN-containing film on the surface which improved properties such as surface roughness, hydrophilicity, hardness, corrosion resistance, protein adsorption, and cell response. In vivo implantation studies showed that the N-PIII treated implants with higher TiN content had better initial bone-implant contact after two weeks, suggesting enhanced performance of Ti6Al7Nb alloy with N-PIII treatment.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Kwang-Hee Cheon, Cheonil Park, Min-Ho Kang, Suhyung Park, Jinyoung Kim, Seol-Ha Jeong, Hyoun-Ee Kim, Hyun-Do Jung, Tae-Sik Jang
Summary: The combination of PEI coating and Ta ion implantation effectively improves vascular compatibility and prevents in-stent restenosis and thrombosis by enhancing endothelial cell adhesion/proliferation and suppressing platelet adhesion/activation. This innovative approach provides a solution to the rapid corrosion and poor vascular compatibility issues faced by biodegradable magnesium stents.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Haifeng Zhang, Jiajun Qiu, Xuanyong Liu
Summary: By modifying the titanium surface with cerium using plasma immersion ion implantation technology, the surface hardness and corrosion resistance of the modified titanium are significantly improved while reducing the level of reactive oxygen species. This modification enhances cell adhesion, proliferation, osteogenesis, and collagen secretion on the surface of the modified titanium.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Pedram Sotoudeh Bagha, Carlo Paternoster, Mehrdad Khakbiz, Saeed Sheibani, Navid Gholami, Diego Mantovani
Summary: Fe-Mn-based alloys have gained attention for their tunable mechanical properties and degradation behavior suitable for biomedical applications. However, their corrosion rate is often too low for cardiovascular device applications. In this study, a resorbable bimodal multi-phase alloy was designed to accelerate the corrosion rate, but concerns of toxicity arose. Surface modification with nitrogen plasma immersion ion implantation was used to control the corrosion rate and improve cell viability.
Article
Chemistry, Physical
Viera Zatkalikova, Juraj Halanda, Dusan Vana, Milan Uhricik, Lenka Markovicova, Milan Strbak, Lenka Kucharikova
Summary: The PIII nitriding treatment can significantly improve the corrosion resistance of AISI 316L stainless steel surfaces, as consistently confirmed by three independent corrosion tests.
Article
Engineering, Biomedical
Lanyu Wang, Qiming Luo, Xianming Zhang, Jiajun Qiu, Shi Qian, Xuanyong Liu
Summary: The introduction of magnesium and zinc into titanium through plasma immersed ion implantation technology has been shown to influence the behavior of human gingival fibroblasts (HGFs), affecting their adhesion, migration, and proliferation capabilities crucial for soft tissue sealing around implants.
BIOACTIVE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Fei Wei, Yuqing Mu, Richard P. Tan, Steven G. Wise, Marcela M. Bilek, Yinghong Zhou, Yin Xiao
Summary: This study found that immobilizing interleukin 4 (IL4) on plasma immersion ion implantation (PIII)-activated surfaces can modify the osteo-immunoregulatory characteristics of barrier membranes for guided tissue regeneration, leading to pro-osteogenic effects. The IL4-immobilized PIII surfaces polarized macrophages to an M2 phenotype and reduced inflammatory cytokine production. Additionally, co-culture of macrophages and bone marrow-derived mesenchymal stromal cells on IL4-immobilized PIII surfaces enhanced the production of angiogenic and osteogenic factors, and triggered autophagy activation. The findings demonstrate that PIII-assisted IL4 immobilization can create a favorable osteoimmune environment for bone regeneration.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yu-Sung Kim, Jin-Young Choi, Cheong-Ha Kim, In-Sik Lee, Shinhee Jun, Daeil Kim, Byung-Chul Cha, Dae-Wook Kim
Summary: Plasma immersion ion implantation of nitrogen ions into a coated Nb layer improved the corrosion resistance of a metal bipolar plate. Nitrogen implantation enhanced the corrosion behavior and densified the microstructure of the Nb layer, reducing defects. The densified structure effectively prevented direct contact with corrosive electrolyte, leading to improved corrosion resistance.
Article
Materials Science, Ceramics
Liangliang Liu, Tijun Li, Qingdong Ruan, Dan Li, Chao Huang, Xiaolin Zhang, Yinghe Ma, Yuzheng Wu, Zhongcan Wu, Ricky K. Y. Fu, Zhongzhen Wu, Paul K. Chu
Summary: Plasma immersion ion implantation and deposition (PIII&D) is used to introduce high-density crystal defects in CrN coatings to enhance the mechanical properties.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Mohammad Asaduzzaman Chowdhury, Helal Hossain, Nayem Hossain, Zabed Hossen, Md. Arefin Kowser, Md. Masud Rana
Summary: This study reviewed the issues of magnesium matrix composites reinforced by calcium phosphate in terms of magnesium breakdown rate and bone tissue engineering applications, as well as the methods of improving corrosion resistance and surface biocompatibility of magnesium alloys through coatings. The findings revealed that multi-functional coatings can enhance the degradation behavior, biocompatibility, and bioactivity of magnesium alloys.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
K. Lau, C. Heu, M. J. Moore, A. Zhang, B. Akhavan, S. G. Wise, M. M. M. Bilek, M. S. Lord, J. Rnjak-Kovacina
Summary: This study investigates the potential of plasma immersion ion implantation (PIII)-treated silk biomaterials for biomedical applications. The results show that PIII treatment can alter the surface chemistry of silk, increase surface stiffness, and promote cell adhesion. However, PIII treatment does not significantly affect fibrous encapsulation and macrophage response in vivo.
MATERIALS TODAY ADVANCES
(2022)
Article
Materials Science, Ceramics
Polina A. Krokhicheva, Margarita A. Goldberg, Alexander S. Fomin, Dinara R. Khayrutdinova, Olga S. Antonova, Alexander S. Baikin, Anatoliy A. Konovalov, Aleksander V. Leonov, Ivan V. Mikheev, Ekaterina M. Merzlyak, Valentina A. Kirsanova, Irina K. Sviridova, Natalia S. Sergeeva, Sergey M. Barinov, Vladimir S. Komlev
Summary: This study aims to develop magnesium calcium phosphate bone cements (MCPCs) with antibacterial properties by incorporating silver ions. Increasing the silver ion concentration significantly improved the mechanical properties of the cements (compressive strength reached 41 +/- 2 MPa) and exhibited an 8 mm inhibition zone against Escherichia coli and Staphylococcus aureus in a disk diffusion test, without toxicity to MG-63 cells in vitro. Analysis of the MCPC samples soaked in Kokubo's simulated body fluid showed the formation of merrillite phase on the surface, transforming into bobierrite phase after 28 days of soaking. Histological examination and micro-CT analysis confirmed the osteoconductive and biodegradable nature of the newly developed MCPCs, making them suitable as bone substitutes.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Biomedical
Kerstin van Gaalen, Conall Quinn, Felix Benn, Peter E. McHugh, Alexander Kopp, Ted J. Vaughan
Summary: This study presents a computational framework that investigates the effect of localised surface-based corrosion on the mechanical performance of a magnesium-based alloy. Using a verified corrosion modelling approach, a quantitative relationship between mechanical integrity and corrosion features was established, with the minimal cross-sectional area parameter being the strongest predictor.
BIOACTIVE MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Yuchen Li, Zhenwei Kang, Xiaoke Zhang, Jinshan Pan, Ying Ren, Genshu Zhou
Summary: This study presents a new method to grow an oxide layer on Mg-Li alloys using low-temperature plasma, which reacts with CO2 and water in the air to form a protective coating. The prepared coating has a layered structure and exhibits excellent corrosion resistance for Mg-Li alloys.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zebin Li, Lianbi Li, Guoqing Zhang, Lixun Song, Zheyan Tu, Chao Han
Summary: The surface of aluminum-doped ZnO (AZO) films was modified using the oxygen plasma immersion ion implantation method (O-PIII). The modified AZO films showed enhanced work function (WF) based on oxygen plasma (O-ICP) treatment, preserving optical characteristics and improving surface morphology. The reduction of oxygen vacancies was responsible for the increased WF. The WF of the modified AZO films decreased rapidly in air following both O-ICP and O-PIII modification, but the O-PIII treatment had a longer-lasting effect.
Article
Chemistry, Multidisciplinary
Jianfang Li, Xiangmei Liu, Yufeng Zheng, Zhenduo Cui, Hui Jiang, Zhaoyang Li, Shengli Zhu, Shuilin Wu
Summary: A rapid and effective therapeutic strategy for treating osteomyelitis is reported, utilizing ferroelectric polarization interfacial engineering of BiFeO3/MXene (Ti3C2) triggered by ultrasound. The ferroelectric polarization induced by ultrasound leads to the formation of a piezoelectric field, and the sonoluminescence effect stimulates BiFeO3/Ti3C2 to produce photogenerated carriers. With the synergistic action of the polarization electric field and Schottky junction, the separation of electrons and holes is accelerated, improving the utilization of polarized charges and photogenerated charges, and enhancing the yield of reactive oxygen species. This approach efficiently kills Staphylococcus aureus in a short time with the assistance of ultrasonic heating.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Guomin Wang, Kaiwei Tang, Wenjuan Jiang, Qing Liao, Yong Li, Pei Liu, Yuzheng Wu, Mengting Liu, Huaiyu Wang, Bin Li, Jianzhong Du, Paul K. Chu
Summary: Adjustable electro-mechanical forces can effectively kill bacteria and adding electrical charges can enhance the antibacterial efficacy.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xinyi Ke, Zhe Zhao, Jiayuan Huang, Chang Liu, Gaoshan Huang, Ji Tan, Hongqin Zhu, Zhijia Xiao, Xuanyong Liu, Yongfeng Mei, Junhao Chu
Summary: Advancements in films have spurred developments in electrochemical sensors, particularly in the fabrication of MOF films on structured substrates for biosensor applications. However, the performance of these electrodes and the mechanisms of their fabrication and sensing applications require further exploration. This study presents the fabrication of MIL-53 (Fe) films on carbonized natural seaweed using an oxide nanomembrane and a potential-dependent electrochemical dopamine sensor, demonstrating high sensitivity and a wide linear range.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xingwang Yan, Xiaolin Zhang, Bin Wang, Ziran Chen, Junze Zhao, Gaopeng Liu, Dan Li, Qingdong Ruan, Liangliang Liu, Yue Xu, Mengxia Ji, Paul K. Chu, Huaming Li, Jiexiang Xia
Summary: Efficient heterojunction photocatalysts with spatial separation of photogenerated carriers are crucial to photo-catalysis. The unique carbonized polymer dots/ZnIn2S4 (CPDs/ZIS) Z-scheme heterojunction is designed to realize efficient spatial directional separation of photogenerated carriers and deliver enhanced photocatalytic performance in pollutant degradation. The CPDs generate more superoxide radicals to facilitate mineralization of organic pollutants and retain more holes for oxidation, while the Z-scheme migration mechanism of photogenerated carriers in the CPDs/ZIS composite preserves the original valence band potential of ZIS.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yinghe Ma, Peng Wu, Jinhui Mei, Zhen Yu, Jianguo Yang, Yanming He, Huaxin Li, Chuanyang Lv, Sendong Ren, Jianping Xu, Zhihui Cai, Paul K. Chu
Summary: Micro-arc oxidation (MAO) was used to treat Ti-6Al-4V electron-beam-welded joints, and the effects on microstructure, phase composition, and corrosion resistance of the joint and surface coating were studied. The MAO treatment resulted in a phase transformation in the joint and a denser and thicker coating. The XRD analysis confirmed the presence of rutile and anatase phases in the coating. The corrosion tests showed a significant decrease in corrosion current density and an improvement in corrosion resistance due to the MAO treatment. Long-term exposure to a high-stress corrosion environment also revealed the formation of a protective layer on the joint.
Review
Engineering, Biomedical
Xiehui Chen, Rong Chang, Hongtao Liu, Le Zhang, Yufeng Zheng
Summary: In contrast to polymer bioresorbable stents (BRS) that showed poor performance in clinical trials due to weak mechanical properties, metallic BRS with improved mechanical strength have been successful in clinical use. Magnesium and iron based biodegradable metal stents have been clinically used, while zinc based stents have been tested in Mini-Pigs. This mini-review paper demonstrates the current technology levels and discusses future research and development directions of metallic BRS, including improving structural thickness and supporting strength, absorption and elimination of degradation products, enhancing mechanical stability, creep resistance and biocompatibility, and exploring new materials and multifunctional stents.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Physical
Ning Pang, Xin Tong, Yunzhe Zheng, Yang Zhou, Qingdong Ruan, Dajun Wu, Rong Huang, Dayuan Xiong, Shaohui Xu, Lianwei Wang, Paul K. Chu
Summary: The construction of heterostructures using atomic layer deposition and high-energy metal plasma implantation has a significant impact on the catalytic activity of cobalt oxide in the oxygen evolution reaction (OER). Among different metals, the heterostructure constructed with cobalt oxide and zirconium metal exhibits better OER activity than silver, titanium, and chromium metals. Increasing the number of zirconium atoms and the thickness of the cobalt oxide layer initially enhances the OER activity and then gradually decreases it. The Zr500/12CoO metal-semiconductor heterojunction has a higher barrier height and more electron-hole pairs, leading to a more positively charged metal surface and promoting the adsorption of OH-. The construction of metal-semiconductor heterojunctions provides insights into the design and surface-interface modification of efficient, low-cost, and durable electrodes for water splitting applications.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Engineering, Biomedical
Yanbin Zhao, Peng He, Junyan Yao, Mei Li, Bin Wang, Linyuan Han, Zhihai Huang, Chao Guo, Jing Bai, Feng Xue, Yu Cong, Weihua Cai, Paul K. Chu, Chenglin Chu
Summary: In this study, a self-healing polymeric coating was constructed on a magnesium alloy for orthopedic implants. The coating incorporated a stimuli-responsive drug delivery nanoparticle platform and showed fast and stable water-enabled self-healing capacity. It also exhibited good antibacterial properties and promoted cell compatibility, osteogenesis, and angiogenesis.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Optics
Guangrong Sun, Qiang Liu, Haiwei Mu, Yudan Sun, Shimiao Wang, Mingzhu Han, Jianxin Wang, Jingwei Lv, Paul K. Chu, Chao Liu
Summary: A novel terahertz anti-resonant fiber is designed with high-resistivity silicon in the fiber and nested double-layer U-shape tubes, which effectively reduce the transmission loss. The fiber's confinement loss and effective material loss are analyzed and optimized using the finite element method. The optimized fiber demonstrates a low total loss of 3.1 x 10-3 dB/m at 1 THz and a low-loss transmission bandwidth of 0.44 THz in the range of 0.5-1.5 THz. Bending analysis shows that the bending loss is less than 2.1 x 10-2 dB/m at 1 THz for bending radii bigger than 60 cm. This anti-resonant fiber exhibits excellent performance and holds high commercial potential in terahertz waveguides.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Physics, Applied
Wei Li, Debao Wang, Tongyu Meng, Wei Zhou, Jingwei Lv, Lin Yang, Wei Liu, Yan Lv, Yu Wang, Paul K. Chu, Chao Liu
Summary: A hybrid metal-dielectric nanoparticle composed of a gold dimer and silicon-silica is designed and analyzed using the finite element method (FEM) to explore the strong coupling between the combined plasmonic mode and anapole mode. Theoretical simulation shows that the nanoparticle achieves an enhanced electric field enhancement of 640 and exhibits unidirectional scattering with almost zero backscattering at multiple wavelengths in the far-field region. Additionally, the composite nanoparticle exhibits a high Purcell factor of 12,193 and sensitivity of 610nm/RIU, surpassing that of single-metal or dielectric nanoparticles.
MODERN PHYSICS LETTERS B
(2023)
Review
Chemistry, Multidisciplinary
Yunlei Zhou, Liting Yin, Shuangfei Xiang, Sheng Yu, Hannah M. Johnson, Shaolei Wang, Junyi Yin, Jie Zhao, Yang Luo, Paul K. Chu
Summary: This review provides a comprehensive overview of the synthesis and fabrication strategies employed in the development of MXene-based flexible materials for energy storage applications. The paper analyzes the current state of the field and explores the challenges and research opportunities in this dynamic area.
Article
Materials Science, Multidisciplinary
Zhiying Wang, Jianfang Li, Yuqian Qiao, Xiangmei Liu, Yufeng Zheng, Zhaoyang Li, Jie Shen, Yu Zhang, Shengli Zhu, Hui Jiang, Yanqin Liang, Zhenduo Cui, Paul K. Chu, Shuilin Wu
Summary: In this study, an antibacterial nanofiber membrane with enhanced photocatalytic activity is fabricated using a ferroelectric polarization strategy. The membrane exhibits excellent visible light absorption and photothermal conversion performance, and is capable of killing Staphylococcus aureus and Escherichia coli.
ADVANCED FIBER MATERIALS
(2023)
