Fully printed electronics on plastic have attracted considerable interest owing to their high compatibility and ease of integration. Here, we developed an ultra-high-resolution printing technique based on “ surface selective deposition ” that can deposit functional inks with 1-μm resolution on flexible substrates. We used this technique to selectively deposit a metal nanoparticle ink and an organic semiconducting material, thereby allowing the large-scale fabrication of high-resolution electronic circuits including organic thin-film transistors with channels as short as 1 μm under ambient atmosphere. We also developed π -junction gold nanoparticles as the electrode material which permitted room-temperature deposition of a conductive metal layer. The room-temperature process enables printing of electronic circuits without application of heat, thus thermal damage to the substrate can be totally avoided. These results indicate that this bottom-up fabrication method based on fluidic self-assembly is promising for the fabrication of large-area, high-resolution, low-cost electronics.
{"title":"Spontaneous Patterning of Electronic Circuits by Surface Selective Deposition","authors":"T. Minari, Xuying Liu, M. Kanehara","doi":"10.1380/jsssj.38.222","DOIUrl":"https://doi.org/10.1380/jsssj.38.222","url":null,"abstract":"Fully printed electronics on plastic have attracted considerable interest owing to their high compatibility and ease of integration. Here, we developed an ultra-high-resolution printing technique based on “ surface selective deposition ” that can deposit functional inks with 1-μm resolution on flexible substrates. We used this technique to selectively deposit a metal nanoparticle ink and an organic semiconducting material, thereby allowing the large-scale fabrication of high-resolution electronic circuits including organic thin-film transistors with channels as short as 1 μm under ambient atmosphere. We also developed π -junction gold nanoparticles as the electrode material which permitted room-temperature deposition of a conductive metal layer. The room-temperature process enables printing of electronic circuits without application of heat, thus thermal damage to the substrate can be totally avoided. These results indicate that this bottom-up fabrication method based on fluidic self-assembly is promising for the fabrication of large-area, high-resolution, low-cost electronics.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"82 1","pages":"222-227"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90265026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Surface Science and Chemistry, A Gap to be Bridged","authors":"H. Onishi","doi":"10.1380/JSSSJ.38.595","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.595","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"41 1","pages":"595-595"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89913900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The unique properties of diamond like carbon (DLC) film, including its chemical inertness and impermeability, make it possible for new applications in food and beverage. In this paper, I summarize and review the recent progress of gas barrier enhancement of polyethylene terephthalate (PET) bottles for beverage from the view point of the application of DLC coating. A unique technique of plasma CVD method has been developed to deposit DLC layer on the inside surface of PET bottles. The DLC-coated PET bottle exhibits extremely high gas barrier properties against oxygen, carbon dioxide and flavors compared to conventional bottles. For the practical use of PET bottles as a commodity, machines have been introduced for soft drink, wine, Japanese sake, edible oil, seasonings and others.
{"title":"Gas Barrier Improvement of PET Bottles by Diamond-Like Carbon Film","authors":"T. Kage","doi":"10.1380/jsssj.38.240","DOIUrl":"https://doi.org/10.1380/jsssj.38.240","url":null,"abstract":"The unique properties of diamond like carbon (DLC) film, including its chemical inertness and impermeability, make it possible for new applications in food and beverage. In this paper, I summarize and review the recent progress of gas barrier enhancement of polyethylene terephthalate (PET) bottles for beverage from the view point of the application of DLC coating. A unique technique of plasma CVD method has been developed to deposit DLC layer on the inside surface of PET bottles. The DLC-coated PET bottle exhibits extremely high gas barrier properties against oxygen, carbon dioxide and flavors compared to conventional bottles. For the practical use of PET bottles as a commodity, machines have been introduced for soft drink, wine, Japanese sake, edible oil, seasonings and others.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"52 1","pages":"240-243"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75918256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of Visible Light Responsive Photocatalysts for Solar Hydrogen Production","authors":"R. Abe","doi":"10.1380/jsssj.38.274","DOIUrl":"https://doi.org/10.1380/jsssj.38.274","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"45 1","pages":"274-279"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78525624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spin-polarized scanning tunneling microscopy (SP-STM), which is one of the most developed probe microscopy last decades, provides spin-contrasted surface images in nano- and atomic-scale spatial resolutions. This paper introduces the technique based on our recent results performed on manganese thin films on a W(110) substrate and cobalt nano-islands formed on a Ag(111) substrate. We also provide some tips to establish SP-STM in laboratories.
{"title":"Surface Magnetism Investigated with Spin-Resolved Scanning Tunneling Microscopy","authors":"Y. Yoshida, M. Haze, Y. Hasegawa","doi":"10.1380/JSSSJ.38.508","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.508","url":null,"abstract":"Spin-polarized scanning tunneling microscopy (SP-STM), which is one of the most developed probe microscopy last decades, provides spin-contrasted surface images in nano- and atomic-scale spatial resolutions. This paper introduces the technique based on our recent results performed on manganese thin films on a W(110) substrate and cobalt nano-islands formed on a Ag(111) substrate. We also provide some tips to establish SP-STM in laboratories.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"2 1","pages":"508-513"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74935529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research Life in RWTH Aachen","authors":"T. Sakata","doi":"10.1380/jsssj.38.247","DOIUrl":"https://doi.org/10.1380/jsssj.38.247","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"157 1","pages":"247-248"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77937800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Angle-resolved photoemission spectroscopy (ARPES) is a powerful experimental tool for revealing the electronic band structure of solids. Excellent characteristics of synchrotron radiation light enable us to achieve specialized ARPES measurements. In order to perform such experiments, we have constructed a new beamline BL-2 MUSASHI (Multiple Undulator beamline for Spectroscopic Analysis of Surface and Hetero-Interface) at Photon Factory, KEK. As examples of the specialized ARPES measurements by utilizing the advantage of this beamline, we introduce recent ARPES results on ( 1 ) three-dimensional electronic structures with changing the photon energy, ( 2 ) bulk electronic structures using high energy soft x rays, and ( 3 ) orbital-selective electronic structures by polarization dependent ARPES measurements.
{"title":"Angle-Resolved Photoemission Spectroscopy Utilizing Characteristics of Synchrotron Radiation","authors":"K. Horiba, Hiroshi Umigashira","doi":"10.1380/JSSSJ.38.553","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.553","url":null,"abstract":"Angle-resolved photoemission spectroscopy (ARPES) is a powerful experimental tool for revealing the electronic band structure of solids. Excellent characteristics of synchrotron radiation light enable us to achieve specialized ARPES measurements. In order to perform such experiments, we have constructed a new beamline BL-2 MUSASHI (Multiple Undulator beamline for Spectroscopic Analysis of Surface and Hetero-Interface) at Photon Factory, KEK. As examples of the specialized ARPES measurements by utilizing the advantage of this beamline, we introduce recent ARPES results on ( 1 ) three-dimensional electronic structures with changing the photon energy, ( 2 ) bulk electronic structures using high energy soft x rays, and ( 3 ) orbital-selective electronic structures by polarization dependent ARPES measurements.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"202 1","pages":"553-558"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73107717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reduction of CO 2 producing high-energy compounds using water as an electron donor and sun light as an energy source has been investigating as useful technology for solving both depletion of the fossil resources and the global warming problem. Our group has successfully developed several types of hybrid photocatalysts consisting of semiconductors and metal complexes, which have both efficient CO 2 reduction ability supplied by the metal-complex unit and strong oxidation power of semiconductors. In this paper, our recent progresses of the visible-light-driven hybrid photocatalytic and photoelectrochemical systems for CO 2 reduction are introduced : (1) hybrids consisting C 3 N 4 and Ru(II) mononuclear complexes, (2) semiconductors, e.g., TaON, and a Ru (II) -Ru ʼ (II) binuclear complex, (3) a photoelectrochemical cell comprising a photocathode of the Ru(II)-Re(I) binuclear complex immobilized on p-type semiconductor NiO and a CoO x / TaON photoanode. First two systems can photocatalyze CO 2 reduction using methanol as an electron donor, and the third photoelectrochemical system can reduce CO 2 using water as a reductant.
利用水作为电子供体和太阳光作为能源，减少二氧化碳产生高能化合物的技术被认为是解决化石资源枯竭和全球变暖问题的有用技术。本课题组已成功开发出多种由半导体和金属配合物组成的杂化光催化剂，既有金属配合物单元提供的高效CO 2还原能力，又有半导体的强氧化能力。本文介绍了近年来可见光驱动的CO 2还原混合光催化和光电化学体系的最新进展:(1)由c3n4和Ru(II)单核配合物组成的杂化体系;(2)半导体，如TaON和Ru(II) -Ru’(II)双核配合物组成的杂化体系;(3)由Ru(II)-Re(I)双核配合物固定在p型半导体NiO上的光电阴极和CoO x / TaON光阳极组成的光电电池。前两种体系以甲醇为电子供体光催化co2还原，第三种体系以水为还原剂光催化co2还原。
{"title":"Reduction of CO 2 Using Photocatalysts and a Photoelectrochemical Cell Consisted of Metal Complexes and Semiconductors","authors":"R. Kuriki, H. Kumagai, K. Maeda, O. Ishitani","doi":"10.1380/JSSSJ.38.291","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.291","url":null,"abstract":"Reduction of CO 2 producing high-energy compounds using water as an electron donor and sun light as an energy source has been investigating as useful technology for solving both depletion of the fossil resources and the global warming problem. Our group has successfully developed several types of hybrid photocatalysts consisting of semiconductors and metal complexes, which have both efficient CO 2 reduction ability supplied by the metal-complex unit and strong oxidation power of semiconductors. In this paper, our recent progresses of the visible-light-driven hybrid photocatalytic and photoelectrochemical systems for CO 2 reduction are introduced : (1) hybrids consisting C 3 N 4 and Ru(II) mononuclear complexes, (2) semiconductors, e.g., TaON, and a Ru (II) -Ru ʼ (II) binuclear complex, (3) a photoelectrochemical cell comprising a photocathode of the Ru(II)-Re(I) binuclear complex immobilized on p-type semiconductor NiO and a CoO x / TaON photoanode. First two systems can photocatalyze CO 2 reduction using methanol as an electron donor, and the third photoelectrochemical system can reduce CO 2 using water as a reductant.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"8 1","pages":"291-296"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81653012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As a support of catalytic Co nanoparticles used for the growth of high-density single-walled carbon nanotubes (SWCNTs), conductive Co silicide films are superior to insulating SiO2 films. A Co silicide films is formed through reaction between a Co thin film and the underlying Si wafer. During this process, however, a TiN cap film must be formed to prevent the Co thin film from forming Co nanoparticles and must be etched after the formation of the silicide film, which makes the formation process complicated. In this study, we optimized the thickness of the Co film and formed a silicide film without using a TiN cap film to simplify the formation process. As a result, the formation of the Co nanoparticles was greatly suppressed during the formation of a silicide film. Using the Co silicide film obtained after the formation process at 650°C for 10 min as the support of catalytic Co nanoparticles, vertically aligned CNTs film with a thickness of 5.3 μm were obtained by hot-filament chemical vapor deposition (CVD) with ethanol steam at 450°C for 30 min. This thickness is approximately 1.8-fold that previously reported.
{"title":"High-Density Growth of Single-Walled Carbon Nanotubes Using Cobalt on Cobalt Silicide Formed via Simplified Process as a Catalyst by Hot-Filament CVD at Low-Temperatures","authors":"Y. Ishikawa, S. Kim","doi":"10.1380/jsssj.38.357","DOIUrl":"https://doi.org/10.1380/jsssj.38.357","url":null,"abstract":"As a support of catalytic Co nanoparticles used for the growth of high-density single-walled carbon nanotubes (SWCNTs), conductive Co silicide films are superior to insulating SiO2 films. A Co silicide films is formed through reaction between a Co thin film and the underlying Si wafer. During this process, however, a TiN cap film must be formed to prevent the Co thin film from forming Co nanoparticles and must be etched after the formation of the silicide film, which makes the formation process complicated. In this study, we optimized the thickness of the Co film and formed a silicide film without using a TiN cap film to simplify the formation process. As a result, the formation of the Co nanoparticles was greatly suppressed during the formation of a silicide film. Using the Co silicide film obtained after the formation process at 650°C for 10 min as the support of catalytic Co nanoparticles, vertically aligned CNTs film with a thickness of 5.3 μm were obtained by hot-filament chemical vapor deposition (CVD) with ethanol steam at 450°C for 30 min. This thickness is approximately 1.8-fold that previously reported.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"3 1","pages":"357-361"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88143846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The real time observation of nanoscale deformation is a significant step toward understanding the mechanisms of friction, wear and lubrication. Our experimental system of a micromachine combined with a TEM enabled us to measure the deformation, force and actual contact area of a single Ag and Fe asperity. The experimental results provided insight into one of the parameters that determines the frictional coefficient. Furthermore, we demonstrated that the energy loss associated with a separation event is correlated with the increase in total surface energy of the two surfaces formed here after the separation of the nano-contact.
{"title":"In situ Observation of Actual Contact Area","authors":"Takaaki Sato, H. Fujita","doi":"10.1380/JSSSJ.38.105","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.105","url":null,"abstract":"The real time observation of nanoscale deformation is a significant step toward understanding the mechanisms of friction, wear and lubrication. Our experimental system of a micromachine combined with a TEM enabled us to measure the deformation, force and actual contact area of a single Ag and Fe asperity. The experimental results provided insight into one of the parameters that determines the frictional coefficient. Furthermore, we demonstrated that the energy loss associated with a separation event is correlated with the increase in total surface energy of the two surfaces formed here after the separation of the nano-contact.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"1 1","pages":"105-110"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90117637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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