The Experts below are selected from a list of 41967 Experts worldwide ranked by ideXlab platform
Rainer Adelung - One of the best experts on this subject based on the ideXlab platform.
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rapid Fabrication Technique for interpenetrated zno nanotetrapod networks for fast uv sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Au contacts. The B-FTS approach exhibits the unique feature of ultra-rapid growth of ZnO nanotetrapods within few milliseconds and simultaneously in situ bridging electrical contacts. These bridging nanotetrapods were directly integrated on a chip and demonstrated signifi cantly improved performances as a UV photodetector. Comparison of the UV photodetectors performances built from interpenetrating ZnO nano-microstructures fabricated by B-FTS and C-FTS Techniques are presented. Fastest response/recovery time constant (≈32 ms) under 365 nm UV light irradiation of B-FTS-made photodetectors (on/off ratio ≈4.5 ◊ 10 3 at 2.4 V) is reported. Different type of nanojunctions formed between neighbor nanowires or nanotetrapods (with ‘arm’ thickness <50 nm) could be the reason for such improved characteristics. The role of nanojunctions in fast UV photodetectors from networked ZnO nanowires and nanotetrapods is discussed. On the basis of the rapid B-FTS Fabrication process and fast UV photodetection capabilities, such networked ZnO nanotetrapods can be potential candidates for various nanosensor applications.
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Rapid Fabrication Technique for interpenetrated ZnO nanotetrapod networks for fast UV sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Two flame-based synthesis methods are presented for fabricating ZnO-nanostructure-based UV photodetectors: burner flame transport synthesis (B-FTS)and crucible flame transport synthesis (C-FTS). B-FTS allows rapid growth of ZnO nanotetrapods and in situ bridging of them into electrical contacts. The photo detector made from interconnected ZnO nanotetrapod networks exhibits fast response/recovery times and a high current ratio under UV illumination. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Saif Almheiri - One of the best experts on this subject based on the ideXlab platform.
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a surface engineered tape casting Fabrication Technique toward the commercialisation of freestanding carbon nanotube sheets
Journal of Materials Chemistry, 2017Co-Authors: Rahmat Agung Susantyoko, Zainab Karam, Sara Alkhoori, Chieh-han Wu, Ibrahim Mustafa, Saif AlmheiriAbstract:Various applications of freestanding multi-walled carbon nanotube (MWCNT) sheets (also known as buckypapers), although very promising in the laboratory, failed to meet the technology readiness level for commercialisation due to the use of non-scalable Fabrication methods. Herein, we developed a surface-engineered tape-casting (SETC) Technique which is a facile and scalable preparation method to fabricate freestanding, flexible and foldable buckypapers using tape-casting on a surface-engineered conveyor-belt without a mould. The SETC Technique has several advantages: it can be implemented in both batch and roll-to-roll processing; has a high throughput; produces a large area with tuneable length, thickness, density and composition; and produces sheets from any commercially available carbon nanotubes with superior properties. The SETC Technique solves the main challenge of tape-casting which is the separation of the dried MWCNT sheet from the supporting-substrate. This challenge originates from the fact that MWCNTs always tend to stick to the substrate which makes it almost impossible to peel as a perfect sheet. We found out that easy peeling of the buckypaper from a substrate can be achieved if the following conditions are satisfied: (a) enough difference between MWCNTs and substrate surface energies and (b) the micro-pyramid pore structure of the substrate morphology. Moreover, the SETC Technique was able to preserve the MWCNT alignment within the sheet. We demonstrated the application of a SETC-made MWCNT–LiFePO4 buckypaper composite in lithium-ion batteries with an excellent specific capacity of 86.79 mA h gLiFePO4−1 (61.20 mA h gMWCNT+LiFePO4−1) at a high discharge rate of 1905 mA gLiFePO4−1 (1270 mA gMWCNT+LiFePO4−1) for 1000 cycles.
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A surface-engineered tape-casting Fabrication Technique toward the commercialisation of freestanding carbon nanotube sheets
J. Mater. Chem. A, 2017Co-Authors: Rahmat Agung Susantyoko, Zainab Karam, Sara Alkhoori, Chieh-han Wu, Ibrahim Mustafa, Saif AlmheiriAbstract:Surface-engineered tape-casting (SETC) is a facile and scalable preparation method to fabricate freestanding, flexible and foldable MWCNT and MWCNT-composite sheets.
Oleg Lupan - One of the best experts on this subject based on the ideXlab platform.
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rapid Fabrication Technique for interpenetrated zno nanotetrapod networks for fast uv sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Au contacts. The B-FTS approach exhibits the unique feature of ultra-rapid growth of ZnO nanotetrapods within few milliseconds and simultaneously in situ bridging electrical contacts. These bridging nanotetrapods were directly integrated on a chip and demonstrated signifi cantly improved performances as a UV photodetector. Comparison of the UV photodetectors performances built from interpenetrating ZnO nano-microstructures fabricated by B-FTS and C-FTS Techniques are presented. Fastest response/recovery time constant (≈32 ms) under 365 nm UV light irradiation of B-FTS-made photodetectors (on/off ratio ≈4.5 ◊ 10 3 at 2.4 V) is reported. Different type of nanojunctions formed between neighbor nanowires or nanotetrapods (with ‘arm’ thickness <50 nm) could be the reason for such improved characteristics. The role of nanojunctions in fast UV photodetectors from networked ZnO nanowires and nanotetrapods is discussed. On the basis of the rapid B-FTS Fabrication process and fast UV photodetection capabilities, such networked ZnO nanotetrapods can be potential candidates for various nanosensor applications.
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Rapid Fabrication Technique for interpenetrated ZnO nanotetrapod networks for fast UV sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Two flame-based synthesis methods are presented for fabricating ZnO-nanostructure-based UV photodetectors: burner flame transport synthesis (B-FTS)and crucible flame transport synthesis (C-FTS). B-FTS allows rapid growth of ZnO nanotetrapods and in situ bridging of them into electrical contacts. The photo detector made from interconnected ZnO nanotetrapod networks exhibits fast response/recovery times and a high current ratio under UV illumination. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Dawit Gedamu - One of the best experts on this subject based on the ideXlab platform.
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rapid Fabrication Technique for interpenetrated zno nanotetrapod networks for fast uv sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Au contacts. The B-FTS approach exhibits the unique feature of ultra-rapid growth of ZnO nanotetrapods within few milliseconds and simultaneously in situ bridging electrical contacts. These bridging nanotetrapods were directly integrated on a chip and demonstrated signifi cantly improved performances as a UV photodetector. Comparison of the UV photodetectors performances built from interpenetrating ZnO nano-microstructures fabricated by B-FTS and C-FTS Techniques are presented. Fastest response/recovery time constant (≈32 ms) under 365 nm UV light irradiation of B-FTS-made photodetectors (on/off ratio ≈4.5 ◊ 10 3 at 2.4 V) is reported. Different type of nanojunctions formed between neighbor nanowires or nanotetrapods (with ‘arm’ thickness <50 nm) could be the reason for such improved characteristics. The role of nanojunctions in fast UV photodetectors from networked ZnO nanowires and nanotetrapods is discussed. On the basis of the rapid B-FTS Fabrication process and fast UV photodetection capabilities, such networked ZnO nanotetrapods can be potential candidates for various nanosensor applications.
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Rapid Fabrication Technique for interpenetrated ZnO nanotetrapod networks for fast UV sensors
Advanced Materials, 2014Co-Authors: Dawit Gedamu, Ingo Paulowicz, Sören Kaps, Galina Haidarschin, Oleg Lupan, Sebastian Wille, Yogendra Kumar Mishra, Rainer AdelungAbstract:Two flame-based synthesis methods are presented for fabricating ZnO-nanostructure-based UV photodetectors: burner flame transport synthesis (B-FTS)and crucible flame transport synthesis (C-FTS). B-FTS allows rapid growth of ZnO nanotetrapods and in situ bridging of them into electrical contacts. The photo detector made from interconnected ZnO nanotetrapod networks exhibits fast response/recovery times and a high current ratio under UV illumination. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Rahmat Agung Susantyoko - One of the best experts on this subject based on the ideXlab platform.
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a surface engineered tape casting Fabrication Technique toward the commercialisation of freestanding carbon nanotube sheets
Journal of Materials Chemistry, 2017Co-Authors: Rahmat Agung Susantyoko, Zainab Karam, Sara Alkhoori, Chieh-han Wu, Ibrahim Mustafa, Saif AlmheiriAbstract:Various applications of freestanding multi-walled carbon nanotube (MWCNT) sheets (also known as buckypapers), although very promising in the laboratory, failed to meet the technology readiness level for commercialisation due to the use of non-scalable Fabrication methods. Herein, we developed a surface-engineered tape-casting (SETC) Technique which is a facile and scalable preparation method to fabricate freestanding, flexible and foldable buckypapers using tape-casting on a surface-engineered conveyor-belt without a mould. The SETC Technique has several advantages: it can be implemented in both batch and roll-to-roll processing; has a high throughput; produces a large area with tuneable length, thickness, density and composition; and produces sheets from any commercially available carbon nanotubes with superior properties. The SETC Technique solves the main challenge of tape-casting which is the separation of the dried MWCNT sheet from the supporting-substrate. This challenge originates from the fact that MWCNTs always tend to stick to the substrate which makes it almost impossible to peel as a perfect sheet. We found out that easy peeling of the buckypaper from a substrate can be achieved if the following conditions are satisfied: (a) enough difference between MWCNTs and substrate surface energies and (b) the micro-pyramid pore structure of the substrate morphology. Moreover, the SETC Technique was able to preserve the MWCNT alignment within the sheet. We demonstrated the application of a SETC-made MWCNT–LiFePO4 buckypaper composite in lithium-ion batteries with an excellent specific capacity of 86.79 mA h gLiFePO4−1 (61.20 mA h gMWCNT+LiFePO4−1) at a high discharge rate of 1905 mA gLiFePO4−1 (1270 mA gMWCNT+LiFePO4−1) for 1000 cycles.
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A surface-engineered tape-casting Fabrication Technique toward the commercialisation of freestanding carbon nanotube sheets
J. Mater. Chem. A, 2017Co-Authors: Rahmat Agung Susantyoko, Zainab Karam, Sara Alkhoori, Chieh-han Wu, Ibrahim Mustafa, Saif AlmheiriAbstract:Surface-engineered tape-casting (SETC) is a facile and scalable preparation method to fabricate freestanding, flexible and foldable MWCNT and MWCNT-composite sheets.
