Article
Chemistry, Multidisciplinary
Lijing Wang, Fen Xia, Wangshu Xu, Guanghua Wang, Shuqing Hong, Fangwen Cheng, Binghui Wu, Nanfeng Zheng
Summary: Copper pastes have attracted attention for their non-toxicity and cost-effectiveness. However, their long-term stability is challenging due to oxidation. Researchers have developed stable copper nanoparticles containing a Cu(0)-Cu(I) core-shell structure with a surface passivation layer. These copper pastes can be sintered in less than one minute, exhibiting high electrical conductivity, mechanical flexibility, and long-term stability comparable to silver pastes. They have potential applications in printed electronics, particularly in the fabrication of flexible devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Dimitris Barmpakos, Vassiliki Belessi, Nikolaos Xanthopoulos, Christoforos A. Krontiras, Grigoris Kaltsas
Summary: This study evaluates the thermoelectrical response of two graphitic materials and demonstrates their potential as microheaters. Utilizing inkjet printing technology allows for efficient production of microheaters with high repeatability and endurance in heat cycles. This is significant for achieving cost-effective production and minimizing material waste.
Article
Nanoscience & Nanotechnology
Wanli Li, Lingying Li, Fei Li, Kohsaku Kawakami, Qingqing Sun, Tomonobu Nakayama, Xuying Liu, Masayuki Kanehara, Jie Zhang, Takeo Minari
Summary: Rapidly customizable and stable copper-nickel complex inks have been developed, which can transform into uniform copper-nickel core-shell nanostructures during low-temperature annealing and immediately sinter into copper-nickel alloy patterns under photon irradiation. The complex inks are particle-free, stable, and compatible with large-area screen printing. The printed copper-nickel alloy patterns exhibit high conductivity and oxidation resistance, and also maintain flexibility, making them suitable for additive manufacturing of highly reliable flexible electronics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Xianghui Zeng, Pei He, Minglu Hu, Weikai Zhao, Huitong Chen, Longhui Liu, Jia Sun, Junliang Yang
Summary: This article provides a comprehensive overview of the application of copper inks in printed electronics. It covers various aspects including ink preparation, printing methods and sintering, antioxidation strategies, and electronic applications. The review also discusses the future development and challenges of copper-based inks in printed electronics.
Article
Chemistry, Multidisciplinary
Magdalena Kralj, Sara Krivacic, Irena Ivanisevic, Marko Zubak, Antonio Supina, Marijan Marcius, Ivan Halasz, Petar Kassal
Summary: In this study, a scalable mechanochemical method for mass-producing graphene electronics was presented using melamine to exfoliate graphite in a planetary ball mill. The resulting melamine-intercalated graphene nanosheets (M-GNS) were used to formulate an inkjet-printable conductive ink and post-processing techniques were used to reduce electrical resistance. A simple flexible printed circuit consisting of a battery-powered LED was successfully realized. This study offers an environmentally friendly alternative for mass-producing graphene-based printed flexible electronics.
Article
Chemistry, Physical
Zhi Liu, Hongtao Zhou, Fan Zeng, Leihang Hu, Xueli Wu, Xianyin Song, Changzhong Jiang, Xingang Zhang
Summary: By adjusting the ratio of nickel and cobalt, researchers have successfully synthesized porous nanoflower-like nickel/cobalt-layered double hydroxides (LDH) with high specific capacitance and excellent rate performance. When combined with graphene and activated carbon, a flexible asymmetric supercapacitor (ASC) with outstanding electrochemical performance and flexibility was fabricated.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Saba Baraghani, Jehad Abourahma, Zahra Barani, Amirmahdi Mohammadzadeh, Sriharsha Sudhindra, Alexey Lipatov, Alexander Sinitskii, Fariborz Kargar, Alexander A. Balandin
Summary: This study focuses on the fabrication and characterization of electronic devices printed with inks of quasi-one-dimensional van der Waals materials. The temperature-dependent electrical measurements show that electron transport in the printed devices is dominated by electron hopping mechanisms. The low-frequency electronic noise in the printed devices is of 1/f'-type, with gamma close to 1 near-room temperature, indicating the potential of quasi-1D van der Waals materials for applications in printed electronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Tammy Sue-Wuen Leung, Eloi Ramon, Carme Martinez-Domingo
Summary: A simplified class of inks called metal salt decomposition (MSD) inks has been developed, which allows for the printing of a wide range of metal films directly onto various substrates. These inks offer excellent conductivities and are cost-effective and stable.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Crystallography
Jakub Krzeminski, Dominik Baraniecki, Jan Dominiczak, Izabela Wojciechowska, Tomasz Raczynski, Daniel Janczak, Malgorzata Jakubowska
Summary: This study explores the potential benefits of combining different printing techniques to improve the production of flexible printed sensors, which is a relevant application for modern coating and surface design. The study introduces the concept of hybrid printing by combining aerosol jet printing and screen printing, demonstrating the potential for achieving high-volume production, miniaturization, and high precision in flexible sensor manufacturing. The findings suggest that hybrid printing offers a novel and promising solution for the future production of wearable electronics.
Review
Chemistry, Multidisciplinary
Haodong Liu, Hongjian Zhang, Wenqi Han, Huijuan Lin, Ruizi Li, Jixin Zhu, Wei Huang
Summary: The revolutionary advancements in flexible electronics offer great potential for wearable devices and electronic skin, with flexible strain sensors serving as essential components in integrated electronic systems. 3D printing technology is preferred for manufacturing flexible strain sensors due to its cost-effectiveness, accuracy, and efficiency. Various printing methods, such as DLP, FDM, and DIW, are discussed in this study, along with the sensing mechanisms of the printed sensors and suggestions for future research directions.
ADVANCED MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Sandra Martinez-Crespiera, Belen Pepio-Tarrega, Rosa M. Gonzalez-Gil, Francisco Cecilia-Morillo, Javier Palmer, Ana M. Escobar, Sirio Beneitez-Alvarez, Tiffany Abitbol, Andreas Fall, Christian Aulin, Yuval Nevo, Valerio Beni, Enrico Tolin, Achim Bahr
Summary: The need for more sustainable printed electronics has led to the exploration of nanocellulose (NC) as a potential material for functional inks and transparent flexible films. NC's unique properties, such as high surface area and reactive hydroxyl groups, make it a versatile additive in ink formulations. Additionally, NC's mechanical, physical, and thermal properties make it an excellent alternative to plastic films. In this study, water-based conductive inks were developed using NC as a template for silver nanoparticles (Ag NPs) and as an additive for ink formulation. The new inks exhibited conductivity levels similar to commercially available conductive inks, and were successfully used to fabricate NFC antennas on NC-coated paper.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Nanoscience & Nanotechnology
Y. Z. N. Htwe, M. Mariatti
Summary: Printed wearable electronics are vital in the electronics industry, and there is an increasing demand for them. However, challenges such as the use of toxic chemicals, low throughput, and complicated fabrication processes still persist. Graphene-based conductive ink has excellent electrical conductivity but faces issues with stability, dispersion in water, and annealing temperature. Hybrid inks combining graphene with metal nanoparticles or conductive polymers are being explored. This review focuses on flexible and stretchable electronics, conductive inks based on graphene and their hybrids, solvent and water-based formulations, printing methods, post-printing techniques, and different substrates used in wearable electronics. The challenges in fabricating printed wearable electronics and recommendations for future research are also discussed.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Oyawale Adetunji Moses, Libo Gao, Haitao Zhao, Zhuo Wang, Mukhtar Lawan Adam, Zhehao Sun, Kaili Liu, Jiahong Wang, Yang Lu, Zongyou Yin, Xuefeng Yu
Summary: The significant advancement in 2D materials fabrications has led to a paradigm shift in material chemistry, greatly impacting the manufacturing industries, especially in the field of smart flexible electronics. This review provides an up-to-date survey of flexible electronics manufactured using 2D materials, analyzing manufacturing processes, ink formulation, properties, and post-treatment necessary for further advancement. It also highlights the smart applications of 2D materials in various electronics and offers a glimpse into their innovative integration into soft robotics in the future.
Article
Chemistry, Multidisciplinary
Kaibin Wu, Keon-Woo Kim, Jin Han Kwon, Jin Kon Kim, Se Hyun Kim, Hong Chul Moon
Summary: In this study, flexible micro-supercapacitors (MCSs) based on PEDOT:PSS were fabricated using direct ink writing (DIW) printing. Inks with different PEDOT:PSS concentrations were prepared for DIW printing and their rheological properties and printability were investigated. The optimized PEDOT:PSS ink allowed stable printing and the resulting MCS exhibited high energy storage performance and outstanding cycle stability. The flexibility of the PEDOT:PSS electrode enabled the MCS to maintain its performance under bending stress. Furthermore, the practicality of the system was demonstrated by tailoring the overall operating voltage and output capacitance through printing MCSs connected in series and parallel.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Minxiang Zeng, Duncan Zavanelli, Jiahao Chen, Mortaza Saeidi-Javash, Yipu Du, Saniya LeBlanc, G. Jeffrey Snyder, Yanliang Zhang
Summary: Thermoelectric materials have the potential to convert thermal energy to electricity, and scalable manufacturing processes are needed to turn high-efficiency materials into high-performance devices. Scalable printing techniques offer precise control over compositions and microstructures, leading to improved device efficiency and system-level performance.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Oncology
Kanako Shitomi, Hirofumi Miyaji, Saori Miyata, Tsutomu Sugaya, Natsumi Ushijima, Tsukasa Akasaka, Hideya Kawasaki
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2020)
Article
Chemistry, Multidisciplinary
Junya Ishida, Masato Nakatsuji, Tatsuki Nagata, Hideya Kawasaki, Takeyuki Suzuki, Yasushi Obora
Article
Chemistry, Analytical
Masanori Ando, Kosuke Inagaki, Hideya Kawasaki, Vasudevanpillai Biju, Yasushi Shigeri
ANALYTICAL SCIENCES
(2020)
Article
Materials Science, Multidisciplinary
Philip Keller, Hideya Kawasaki
Summary: The study introduced the first use of water-dispersible Ag nanoparticle-based ink to create conductive leaf vein networks in flexible sensors. By employing self-assembly technology, homogeneous deposition of Ag NPs on the leaf vein network was achieved, and the networks were rendered conductive through annealing.
Article
Nanoscience & Nanotechnology
Daisuke Tomotoshi, Rika Oogami, Hideya Kawasaki
Summary: A new conductive Cu-Ni-based hybrid ink has been proposed, which can be sintered at 150-180 degrees C to produce Cu-Ni electrodes with low electrical resistance, high oxidation resistance, and flexibility. The Cu flakes and NiF-AmIP complex in the hybrid ink catalyze the self-reduction process, forming Cu-Ni electrodes with high conductivity at temperatures exceeding 150 degrees C. The Cu-Ni electrodes demonstrated high stability against oxidation and mechanical bending stress, showing great potential for printed/flexible devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Satoshi Saita, Maho Anzai, Nanase Mori, Hideya Kawasaki
Summary: Organic photosensitizers often self-aggregate, leading to the inactivation of their photosensitizing capabilities, which necessitates controlled aggregation for their applications. This study presents a strategy for enhancing the generation of O-1(2) by suppressing the self-aggregation of methylene blue through a nanocomposite of porous silica nanoaggregates and methylene blue.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Optics
Satoshi Saita, Hideya Kawasaki
Summary: This study investigates the synthesis of fluorescent silica-based nanoparticles using aminosilane coupling agents and ascorbic acid, revealing the origin of fluorescence to be surface defect pairs in silica. Hydrothermal treatment at 230°C results in highly fluorescent NPs with a quantum yield of 32.3%, while NPs synthesized at 80°C exhibit a lower quantum yield of around 2.0%.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Multidisciplinary
Ichie Okamoto, Hirofumi Miyaji, Saori Miyata, Kanako Shitomi, Tsutomu Sugaya, Natsumi Ushijima, Tsukasa Akasaka, Satoshi Enya, Satoshi Saita, Hideya Kawasaki
Summary: The novel photosensitizer Lys-Au NCs/RB has low cytotoxicity, effectively inhibiting bacterial activity and reducing biofilm formation, potentially improving dental treatments.
Article
Chemistry, Multidisciplinary
Satoshi Saita, Shin-ichi Takeda, Hideya Kawasaki
Summary: Optimizing stabilizers and solvents is crucial for obtaining highly dispersed nanoparticle inks. This study presents a Hansen solubility parameter-based analysis of the dispersibility of oleylamine-capped silver nanoparticle inks, providing a quantitative prediction of dispersibility and establishing a correlation with the sintered film morphology, which is helpful for optimizing nanoparticle inks in printed electronics.
Review
Chemistry, Analytical
Masanori Ando, Hideya Kawasaki, Satoru Tamura, Yoshikazu Haramoto, Yasushi Shigeri
Summary: In recent years, there has been a growing demand for better and safer gas sensors that are smaller, lighter, energy-efficient, and cost-effective. This has led to the exploration of new gas sensor materials and optical gas sensor technology. This article reviews the recent advancements in conductometric and optical gas sensing technologies using CdS, CdSe, and CdTe.
Article
Engineering, Biomedical
Takuma Oe, Duangkamol Dechojarassri, Sachiro Kakinoki, Hideya Kawasaki, Tetsuya Furuike, Hiroshi Tamura
Summary: In this study, the antibacterial activity of a hydrogel system composed of sodium alginate (SA) and basic chitosan (CS) was improved by adding AgNPs using sodium hydrogen carbonate. SA-coated AgNPs were produced via ascorbic acid or microwave heating, and their antimicrobial activity was evaluated. The microwave-assisted method was found to produce uniform and stable SA-AgNPs with an optimal reaction time of 8 minutes. The SA-AgNPs/CS gel formed successfully and demonstrated higher mechanical strength and low cytotoxicity, exhibiting inhibition zones against E. coli and B. subtilis.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jing Yi Lai, Naoya Inoue, Chuan Wei Oo, Hideya Kawasaki, Theam Soon Lim
Summary: This study reported the utilization of M13 bacteriophage particles as a carbon source to synthesize fluorescent nanoparticles through facile, one-step microwave heating. The resulting nanoparticles showed good water solubility and exhibited bright blue luminescence. The sensing application of these phage-based nanoparticles towards Fe(iii) ions showed a quenching effect with a linear correlation and a detection limit of 8.0 mu M, highlighting the potential application of virus particles as a source for the synthesis of fluorescent carbon nanoparticles.
Proceedings Paper
Chemistry, Applied
Is Fatimah, Eka Akbar Kurniastuti, Hideya Kawasaki
3RD INTERNATIONAL SEMINAR ON CHEMICAL EDUCATION: TRENDS, APPLICATIONS, CHANGES IN CHEMICAL EDUCATION FOR THE 4.0 INDUSTRIAL REVOLUTION
(2020)
Review
Chemistry, Multidisciplinary
Tokuhisa Kawawaki, Yuichi Negishi, Hideya Kawasaki
NANOSCALE ADVANCES
(2020)
Article
Chemistry, Multidisciplinary
Takashi Nakakoji, Hirofumi Sato, Daisuke Ono, Hiroyuki Miyake, Satoshi Shinoda, Hiroshi Tsukube, Hideya Kawasaki, Ryuichi Arakawa, Motohiro Shizuma
CHEMICAL COMMUNICATIONS
(2020)