Article
Chemistry, Physical
Yabing Zhang, Teng Zhang, Hongbin Shi, Qing Liu, Tao Wang
Summary: Flexible conductive copper patterns with low electric resistance, good adhesion, and high stability were successfully prepared on heat-sensitive PET substrate by combining inkjet print with Cu NPs conductive ink and ELP copper. The patterns exhibited low resistivity, excellent anti-oxidation performance, and remained adhered to the substrate even after 4000 cycles bending test.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yabing Zhang, Teng Zhang, Hongbin Shi, Qing Liu, Yuling Shi, Tao Wang
Summary: A non-formaldehyde electroless plating process was successfully applied to prepare flexible copper printed circuits on PET films, utilizing Cu NPs as catalytic seeds and DMAB as a reductant. The Cu NPs were directly printed on PET surface modified by MPTES to improve adhesion, showing excellent conductivity. Research on reaction conditions and kinetics of the electroless plating process was conducted to optimize deposition and cycling of the plating bath for large-scale manufacturing of flexible electronics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Jhu-Lin You, Chang-Pin Chang, Nen-Wen Pu, Yi-Shin Chen, Ling-Hsuan Wang, Kun-Hung Pan, Ming-Der Ger
Summary: An improved electroless copper plating method for fabricating 5G/Sub-6 GHz antennas is reported, utilizing a Pd2+/4VP complex as the catalyst on a PI substrate, followed by selective curing and activation induced by a pulsed UV laser, resulting in high-quality copper circuit patterns.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Rashmi Ghosh, Xiaoya Liu, Matthew Z. Yates
Summary: A novel process is demonstrated to produce patterns of electrically conductive copper on a flexible polyimide film substrate using standard desktop laser printed toner and near room temperature aqueous chemistry. The process avoids the use of high temperature, vacuum, and organic solvents and is suitable for low-cost prototyping or distributed manufacturing of simple electronic devices.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Huiqing Xiang, Zhicheng Zhou, Yang Yang, Zihao Yu, Jianguo Liu
Summary: This paper presents a selective metallization technology on ordinary polymer substrates using laser direct activation of copper hydroxyl phosphate and electroless deposition of copper. The study found that the laser modification and activation resulted in a special surface microstructure and good adhesion strength, enabling selective copper deposition.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Chemical
Ruxia Zhang, Chengmei Gui, Junjun Huang, Guisheng Yang
Summary: This study prepared an Ag nanoparticle/polymer brush (Ag/PB) catalytic solution by incorporating silane in AgNO3 solution for enhancing the adhesion of copper patterns. The application in electroless deposition resulted in superior performance of the fabricated copper patterns.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Polymer Science
Golnaz Taghavi Pourian Azar, Sofya Danilova, Latha Krishnan, Yirij Fedutik, Andrew J. Cobley
Summary: The electroless copper plating of textiles is a promising method for producing high-reliability e-textiles, sensors, and wearable electronics. Optimizing the printing design, direction, and number of printing cycles can result in metallized patterns with desired conductivity, stiffness, and laundering durability.
Article
Chemistry, Physical
Dongxu Huang, Mingqi Huang, Deliang Sun, Bincan Liu, Rui Xuan, Jinshan Liu, Rong Sun, Jinhui Li, Guoping Zhang, Daquan Yu
Summary: This study successfully improved the adhesion strength between copper and glass by preparing ZnO coating on the glass surface, achieving a high adhesion strength of up to 5B. Furthermore, a specific chemical was used to create an optional hydrophobic surface, allowing for selective electroless copper plating patterns.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Ceramics
Seung Ho Han, Bo-Young Kim, Jae Kwang Lee, Intae Seo, Hyung-Won Kang, Myong Jae Yoo
Summary: A simple and economical method was developed for the selective metallization of piezoelectric ceramics, achieving high-adhesion copper patterns on the ceramics through laser-induced surface modification and electroless copper plating. The results were comparable to those of screen-printed silver electrodes.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Manufacturing
Nathan Lazarus, Joshua B. Tyler, Jorge A. Cardenas, Brendan Hanrahan, Harvey Tsang, Sarah S. Bedair
Summary: This study demonstrates a new electroless plating method for metallizing plastic 3D printed parts without the use of expensive precious metal catalysts. By electrolessly plating conductive composite filaments, loaded with metal or other conductive particulate, with exposed particles serving as nucleation sites, the researchers achieved successful metalization of plastic parts. The use of a flash of high energy white light to ablate the polymer surface and expose a higher density of metal particulate was also shown to accelerate the plating process. Selective plating using a dual extruder 3D printer was utilized to reduce resistance. The results of this study highlight the importance and potential of this new electroless plating method for the fabrication of conductive composite materials.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Electrical & Electronic
Jun Ren, Dongya Li, Yang Zhang, Wenzhen Yang, Heng-yong Nie, Yu Liu
Summary: This paper presents a laser-induced selective activation (LISA) process for creating complex conductive patterns on polyimide substrates. The LISA process enhances the stability of plated metallic structures and exhibits superior mechanical stability and high resolution.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Computer Science, Information Systems
Wenguang Chen, Shoutao Wang, Zhijian Liu, Caiyi Wei, Yuanyuan Peng
Summary: A bidirectional pulse power supply with adjustable forward and reverse parameters was designed and used to test copper plating on printed circuit boards with filled via holes. The effects of frequencies, pulse width ratios, and current densities on the copper plating effect were investigated and compared with DC copper plating. The experimental results showed that the bidirectional pulse power supply had a better effect and a faster speed on via-filling copper plating, and can also reduce the use of additives.
Article
Materials Science, Multidisciplinary
Caterina Credi, Roberto Bernasconi, Marinella Levi, Luca Magagnin
Summary: This article presents a straightforward and low-cost method that combines stereolithography (SLA) and selective electroless metallization (EM) for the fabrication of 3D parts with complex shapes and end-use multifunctionalities. A novel photocurable composite based on acrylate resin loaded with nickel (Ni) particles is developed for high-resolution SLA printing with self-catalytic properties. The metallized SLA cured samples exhibit good electrical and magnetic properties and improved robustness compared to their non-loaded counterparts. Selective metallization of 3D printed parts is achieved through multi-material SLA printing with strong adhesion at the interface, providing a cost-effective approach for rapid prototyping of functional free-form features on 3D structures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Dongmin Lee, So-Young Kim, Gwajeong Jeong, Woo Sung Lee, Wonho Lee, Hyunseung Yang
Summary: In this study, a novel method is proposed to manufacture 3D-printed polymers with conductive metal layers through a thiol-mediated electroless plating process. Various metal layers can be deposited onto any 3D-printed structures with high uniformity and adhesion stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Liexin Wu, Li Meng, Yueyue Wang, Shuhuan Zhang, Wuxia Bai, Taoyuan Ouyang, Ming Lv, Xiaoyan Zeng
Summary: This paper investigates the influence of different texturing patterns on the adhesion strength of copper-ceramic. The results indicate that the surface area, microstructures, and structural defects of the textures significantly affect the adhesion. The square net texture shows a more significant effect on improving the adhesion.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Chemical
Shu Kikuchi, Ryoka Shoji, Shinji Kanehashi, Guanghui Ma, Kenji Ogino
Summary: Hierarchical nanostructures in polymer blends consisting of PBTPA, PMMA, and PBTPA-b-PMMA were fabricated using a solvent evaporation method. The morphology was influenced by the molecular weight and chemical composition of PBTPA-b-PMMA, molecular weights of homopolymers, and blend composition. The addition of PBTPA-b-PMMA caused a transition from core-shell to Janus or inversed core-shell structures, depending on the molecular weight of PBTPA segment. Watermelon-like particles were observed when the molecular weight of the PMMA segment was higher than that of the PMMA homopolymer. The interfacial tension between PBTPA and the aqueous phase was reduced by PBTPA-b-PMMA.
Article
Chemistry, Multidisciplinary
Jin Cheng, Shinji Kanehashi, Kenji Ogino
Summary: The introduction of beta-diketone structure and optimal octyl length in the side chain of Poly[9,9-bis(2,4-octanecliony1)-9',9'-di-n-octyl[2,2'-bi-9H-fluorene]-7,7'-diyl] improves its fluorescent, electrochemical, and electron transporting properties, resulting in enhanced color stability and electron mobility.
Article
Chemistry, Physical
Xiaoyan Ma, Haoning Gong, Yanchen Liu, Yamei Liu, Kenji Ogino, Ruirui Xing, Xuehai Yan
Summary: Inflammatory bowel disease (IBD) is a chronic inflammation disease that requires improved therapeutic options. The covalent assembly of casein phosphopeptide (CPP) into nanoparticles (GCPP NPs) provides a solution to enhance stability and antioxidation efficacy for the treatment of IBD. The GCPP NPs demonstrated robustness, stability, and efficient accumulation at inflamed sites, leading to potential oral administration for anti-inflammatory treatment of IBD.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Environmental Sciences
Jikai Lu, Yina Luo, Junlin Huang, Bingyan Hou, Bing Wang, Kenji Ogino, Jian Zhao, Hongyu Si
Summary: As soil acidification increases, nutrient ion utilization decreases. This study found that using biochar as an amendment can improve acidified soil through physical and ion-exchange adsorption processes. The 10% biochar ratio group performed the best, reducing outlet volume and nutrient ion accumulation in leachate and surface soil. This research provides a theoretical basis for large-scale application of biochar.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Fengqiang Cao, Yali Ming, Weixiang Gao, Jia Ge, Kenji Ogino
Summary: This study demonstrated the advantages of a novel nanoparticle-stabilized emulsion in cell affinity and antigen internalization, providing insights for designing efficient vaccines.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2022)
Article
Engineering, Chemical
Maryam Taheri, Mehdi Jahanfar, Kenji Ogino
Summary: This study investigated the curing behavior of marble adhesive based on unsaturated polyester resin using different combinations of accelerators and inhibitors. The results showed that using a dual system of inhibitor can significantly improve the storage stability of the adhesive.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Chemistry, Organic
Yuka Yokoyama, Tatsuya Yasui, Akihiro Takeda, Shinji Kanehashi, Kenji Ogino
Summary: Cardanol, the main component of CNSL, was hydrogenated and converted to Bis-CNSL using aldehydes in the presence of an acid catalyst without a solvent. High selectivity for Bis-CNSL was achieved using aldehydes with alkyl chains of 2 or more carbons. A large-scale preparation process using propionaldehyde with reduced aldehyde amount and recrystallization from methanol resulted in Bis-CNSL purity over 99%.
TETRAHEDRON LETTERS
(2023)
Article
Materials Science, Paper & Wood
Yuxiao Cai, Luyu Liu, Wei Zhang, Sen Xing, Xiaohui Liang, Mingjie Gao, Hewei Yu, Zhaoxia Jiang, Kenji Ogino, Xiuxiu Chen, Bing Wang, Hongyu Si
Summary: This study found that adding pyrochar (PC) and hydrochar (HC) to calcareous soils has positive effects on nutrient uptake by maize seedlings and reveals the important role of mycorrhizal colonization. The effects depend on the type of biochar added and the type of nutrient evaluated. Maize seedlings in the HC and PC groups had higher dry weights and 17% higher phosphorus accumulation compared to the control group. Adding PC significantly increased zinc accumulation and copper concentration and accumulation in maize seedlings, while adding HC increased iron concentration. Applying PC and HC also promoted mycorrhizal colonization of maize roots, and phosphorus, zinc, and copper accumulations in the plant were positively correlated with the mycorrhizal colonization rate.
Article
Environmental Sciences
Hongyu Si, Changkai Zhao, Bing Wang, Xiaohui Liang, Mingjie Gao, Zhaoxia Jiang, Hewei Yu, Yuanyuan Yang, Zhijie Gu, Kenji Ogino, Xiuxiu Chen
Summary: Returning straw-like agricultural waste to the field through hydrothermal carbonization (HTC) is important for waste utilization, soil improvement, and carbon sequestration. This study proposes strategies to optimize the liquid-solid ratio (LSR) of HTC and evaluates the stability, soil application potential, and economic benefits of corn stover-based hydrochar under different LSRs. The results show that reducing LSR increases the dissolved organic carbon content, but does not significantly affect other properties of the hydrochar. The optimized LSR enhances soil application potential and economic benefits.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Zhaowen Ding, Xiao Zhang, Yan Wang, Kenji Ogino, Yuanbin Wu, Hua Yue, Zhouguang Jiao, Cui Song, Guihong Lu, Shuang Wang, Xiaoyong Gao, Yongjun Gao, Min Shi, Yugang Wang, Guanghui Ma, Wei Wei
Summary: The interaction between vascular endothelial cells (VECs) and nanomaterials is crucial for the safe and efficient application of nanomedicine. Researchers have discovered that two-dimensional PEGylated lamellar materials (PLMs) can significantly stimulate VECs by interacting with membrane lipids and inducing changes in calcium ion channels. In vivo studies have shown that PLMs-stimulated VECs have diverse impacts on atherosclerosis and tumor-associated nanomedicine accumulation. This study not only enhances our understanding of the mechanism by which specific proteins on VEC membranes are stimulated by PLMs but also provides guidance for the rational use of promising PLMs in nanomedicine.
Article
Polymer Science
Yuka Yokoyama, Tatsuya Yasui, Akihiro Takeda, Kenji Ogino, Shinji Kanehashi
Summary: A novel diglycidyl ether (BCNDGE) derived from cashew nut shell liquid (CNSL) was synthesized and used to formulate an epoxy resin. The curing behaviors and chemical structures of epoxy polymers were confirmed. The inclusion of BCNDGE enhanced the flexible nature of the polymer segments and improved the thermal stability of epoxy films.
Article
Chemistry, Applied
Bing Wang, Yonggang Li, Zhijie Gu, Handong Wang, Xiaofeng Liu, Suping Li, Xiuxiu Chen, Xiaohui Liang, Zhaoxia Jiang, Kenji Ogino, Hongyu Si
Summary: Porous carbon systems doped with heteroatoms have potential for high energy density and power density. However, there is a lack of understanding of the relationship between heteroatom types and electrochemical properties, resulting in trial-and-error approaches for supercapacitor development. In this study, we synthesized biomass-derived carbon systems doped with N, S, and O atoms, which exhibited large specific surface areas and hierarchical porous structures. Our analysis of experimental evidence and theoretical simulations established doping principles for predictive electrochemical performance. The doped materials had broad operating voltage range (up to 1.8 V) in aqueous electrolytes and improved capacitive ions adsorption. They also demonstrated high energy density (25.2 Wh kg-1 at 180 W kg-1) and excellent cycling performance (97.6% capacity retention after 20,000 cycles). This work provides insights for designing advanced heteroatom-doped carbon electrodes.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Bing Wang, Yonggang Li, Zhijie Gu, Handong Wang, Xiaofeng Liu, Suping Li, Xiuxiu Chen, Xiaohui Liang, Kenji Ogino, Hongyu Si
Summary: Metal oxide/carbon composite systems have been extensively studied for the fabrication of supercapacitors. In this research, a strategy using biomass-derived hierarchical porous carbon as supports was proposed to achieve high capacitance and rapid ion/charge transport. The deposition of nanosized MnO2 and MnO on the carbon support was achieved through a slow redox reaction. The excellent performance, low cost, and environmental friendliness highlight the great promise of biomass waste in designing carbon supports for electrochemical applications.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Immunology
Sha Peng, Yumeng Yan, To Ngai, Jianjun Li, Kenji Ogino, Yufei Xia
Summary: Therapeutic cancer vaccines are cost-effective for eliminating cancer cells, but transient maturation and activations of dendritic cells weaken the immune response. Researchers have developed an alum-stabilized Pickering emulsion to enhance antigen presentation by antigen-presenting cells, leading to improved T cell responses against tumor growth.
Article
Biochemistry & Molecular Biology
Fengqiang Cao, Sha Peng, Yaling An, Kun Xu, Tianyi Zheng, Lianpan Dai, Kenji Ogino, To Ngai, Yufei Xia, Guanghui Ma
Summary: Current vaccine delivery systems aim to replicate the natural dissemination of live pathogens, but fail to consider that pathogens evolve to evade the immune system. A new multi-layered aluminum hydroxide-stabilized emulsion (MASE) has been developed to dictate the delivery sequence of antigens, resulting in enhanced immune responses and decreased viral loads in H1N1 influenza and SARS-CoV-2 vaccines. By reversing the delivery sequence of surface antigen and core antigen, the inside-out strategy may offer major implications for enhanced vaccinations against enveloped RNA viruses.
SIGNAL TRANSDUCTION AND TARGETED THERAPY
(2023)
