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The use of an oxidized carbon nanotube film to control Zn deposition and eliminate dendrite formation in a Zn ion battery

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Carbon 2025年 235卷

作者： Pin-xiang Li Zhe-han Yi Ye-xing Wang Chang He Ji Liang Feng Hou Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering Tianjin University Tianjin 300072 China Interdisciplinary Graduate Programme - Collaborative Initiative Graduate College Nanyang Technological University Singapore 637371 Singapore School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Tianjin Key Laboratory of Low-dimensional Electronic Materials and Advanced Instrumentation Tianjin 300072 China

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Iron Magnetic Nanoparticles Coated with Various Pvp Loadings: Evaluation of Magnetic Properties and Morphology

SSRN

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SSRN 2023年

作者： Shikh Zahari, S.M. Shahrul Nizan Weber, Cameron C. Puspitasari, Poppy Che Sam, Nur Fatin Izzati Muhamad Tajuddin, Nurul Hafizah Mohd Zainon, Nurazilah Elzaneen, Kholoud M.H. Industrial Chemical Technology Programme Faculty of Science and Technology Universiti Sains Islam Malaysia Bandar Baru Nilai Negeri Sembilan Nilai71800 Malaysia Department of Chemical Engineering South Kensington Campus Imperial College London LondonSWZ 2AZ United Kingdom Mechanical Engineering Department Engineering Faculty Malang State University Semarang Street 5 Malang East Java Indonesia School of Chemical Sciences University of Auckland Auckland1010 New Zealand MacDiarmid Institute of Advanced Materials and Nanotechnology Wellington6140 New Zealand Industrial Centre of Innovation in Biomedical SIRIM Industrial Research Lot 34 Jalan Hi-Tech 2/3 Kulim Hi-Tech Park Kulim Kedah 09000 Malaysia

Polyvinylpyrrolidone iron magnetic nanoparticles (PVP-Fe MNPs) have proven to be useful materials for the separation of oil-water mixtures. However, the relationship between the PVP loading and properties of these materials is not currently well understood. In this study, we examine the changes in the magnetic properties and morphology of PVP-Fe MNPs as a result of varying the PVP loading. The samples were synthesised by a co-precipitation technique in a homogeneous solution containing PVP and iron salts. Analysis revealed that the PVP loading had an inverse relationship with the magnetic properties (M s , M r and H c ), which was mainly impacted by the morphology of the resultant PVP-Fe MNPs. Thermogravimetric and CNS analyses were used to characterise the proportion of PVP bound to these materials. These results suggest that the properties of these PVP-Fe MNPs can be tuned by the PVP loading used in their synthesis, allowing these materials to be tailored for the targeted application. © 2023, The Authors. All rights reserved.

关键词： Magnetic properties

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Nanocellulose as a sustainable material for water purification

SPE Polymers

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SPE Polymers 2020年第2期1卷 69-80页

作者： Ahankari, Sandeep George, Thomas Subhedar, Aditya Kar, Kamal K. School of Mechanical Engineering Vellore Institute of Technology Tamil Nadu Vellore India Advanced Nanoengineering Materials Laboratory Department of Mechanical Engineering and Materials Science Programme Indian Institute of Technology Kanpur Kanpur India

The demand for purified water has been increasing day by day. More feasible technologies, including membrane filtration, adsorbents, and so forth have emerged out to be more efficient and cheaper over conventional industrial methods. Nanocellulose, being biodegradable, nontoxic, and sustainable nanofiller exhibits excellent mechanical properties, high aspect ratio, high surface area, and more importantly tunable surface chemistry;is a potential candidate to be employed for water purification. Composite membranes and films for water filtration, constituting of biopolymers have gathered immense interest lately. Compared with its unmodified form, the functionalized NC enhances the compatibility with the matrix and readily forming strong network structures;essential for the formation of channels for better adsorption of impurities and higher water flux. This review highlights some of the recent studies dedicated to making and testing of nanofiltration membranes prepared using nanocellulose and its different functionalized derivatives. © 2020 The Authors. SPE Polymers published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers.

关键词： membrane nanocellulose nanocomposites purification water

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technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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Inferring the Geometric Nullspace of Robot Skills from Human Demonstrations

Inferring the Geometric Nullspace of Robot Skills from Human...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Caixia Cai Ying Siu Liang Nikhil Somani Wu Yan A*STAR Institute for Infocomm Research (I2R) Singapore Institute of High Performance Computing A*STAR Human-centric AI (CHEEM) Programme Singapore A*STAR Advanced Remanufacturing and Technology Centre (ARTC) Singapore

ISBN: (数字)9781728173955

ISBN: (纸本)9781728173962

In this paper we present a framework to learn skills from human demonstrations in the form of geometric nullspaces, which can be executed using a robot. We collect data of human demonstrations, fit geometric nullspaces to them, and also infer their corresponding geometric constraint models. These geometric constraints provide a powerful mathematical model as well as an intuitive representation of the skill in terms of the involved objects. To execute the skill using a robot, we combine this geometric skill description with the robot's kinematics and other environmental constraints, from which poses can be sampled for the robot's execution. The result of our framework is a system that takes the human demonstrations as input, learns the underlying skill model, and executes the learnt skill with different robots in different dynamic environments. We evaluate our approach on a simulated industrial robot, and execute the final task on the iCub humanoid robot.

关键词： Task analysis Manifolds Adaptation models Service robots Grasping Data models

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Development of a polymer-based antimicrobial coating for efficacious urinary catheter protection

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Biotechnology Notes 2021年 2卷 1-10页

作者： Low, Jia Le Kao, Patrick Hsien-Neng Tambyah, Paul A. Koh, Geok Liang Esther Ling, Hua Kline, Kimberly A. Cheow, Wean Sin Leong, Susanna Su Jan Professional Officers Division Singapore Institute of Technology 10 Dover Drive 138683 Singapore School of Biological Sciences Nanyang Technological University 60 Nanyang Drive 637551 Singapore Department of Medicine National University Singapore 5 Lower Kent Ridge Road 119074 Singapore Advanced Imaging Lab Life Sciences Institute National University of Singapore 117456 Singapore Department of Biochemistry Yong Loo Lin School of Medicine National University of Singapore 7 Medical Drive 117597 Singapore NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI) National University of Singapore 28 Medical Drive 117456 Singapore Synthetic Biology Translational Research Programme Yong Loo Lin School of Medicine National University of Singapore 28 Medical Drive Singapore 117456 Singapore Singapore Centre for Environmental Sciences Engineering Nanyang Technological University 60 Nanyang Drive 637551 Singapore Chemical Engineering and Food Technology Cluster Singapore Institute of Technology 10 Dover Drive 138683 Singapore

This study reports the development of a polymer-based catheter coating to facilitate controlled release of antimicrobial peptides (AMP) to target both planktonic bacteria and biofilm in the urinary catheter environment. Catheter associated urinary tract infection (CAUTI) is a common nosocomial infection among hospitalized patients and is a major reservoir of antimicrobial resistant pathogens. Although silver- or antibiotics-coated catheters have been deployed to minimise CAUTI, the inconsistency and lack of durability in antibacterial properties of these coatings have limited their clinical use. The incorporation of AMPs in catheter coatings has gained interest due to the effective bacteria killing effects of AMPs, with few reports on bacterial resistance development against peptides. This study aims to deploy a novel and potentially cost-effective technique to coat an anhydrous polymeric coating impregnated with AMPs for silicone-based catheters, to overcome limitations in conventional hydrogel-based coatings. Sustained peptide release was achieved with the development of an Ethyl Cellulose (EC): 1-Palmitoyl-2-oleoylphosphatidylcholine (POPC)-based diffusion layer over an AMP-laden Polycaprolactone (PCL)-based layer to control AMP diffusion into the environment over a clinically relevant duration. The ‘AMP-EC-PCL’ coating showed good anti-bacteria performance against uropathogenic Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa for up to 6 days. The coating also showed excellent anti-biofilm capability against green fluorescent protein (GFP)-tagged UTI E. coli. Fifteen centimeter catheter segments of single layer ‘AMP-EC-PCL’-coated catheters showed sustainable AMP release kinetics up to 7 days, where good antibacterial and anti-biofilm activity against E. coli was observed. The full scale ‘AMP-EC-PCL’-coated catheter showed improved mechanical integrity compared to commercial silicone catheters with preservation of the catheter balloon integrity

关键词： Anti-Biofilm Antimicrobial Antimicrobial peptides Catheter

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Vanadia as an electron-hole recombination inhibitor on fibrous silica-titania for selective hole oxidation of ciprofloxacin and Congo red photodegradation

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Chemosphere 2023年第1期338卷 139502页

作者： Hassan, N.S. Jalil, A.A. Fei, I.C.M. Razak, M.T.A. Khusnun, N.F. Bahari, M.B. Riwayati, Y.I. Suprapto, S. Prasetyoko, D. Firmansyah, M.L. Salleh, N.F.M. Rajendran, Saravanan Centre of Hydrogen Energy Institute of Future Energy UTM Johor Johor Bahru81310 Malaysia Faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia UTM Johor Johor Bahru81310 Malaysia Faculty of Science Universiti Teknologi Malaysia UTM Johor Johor Bahru81310 Malaysia Department of Chemistry Faculty of Science and Data Analytics Institut Teknologi Sepuluh Nopember Keputih Sukolilo Surabaya60111 Indonesia Nanotechnology Engineering Faculty of Advanced Technology and Multidiscipline Airlangga University Jl. Dr. Ir. H. Soekarno Surabaya60115 Indonesia Environmental and Occupational Health Programme School of Health Sciences Health Campus Universiti Sains Malaysia Kubang Kerian Kelantan 16150 Malaysia Faculty of Engineering Department of Mechanical Engineering University of Tarapacá Avda General Velasquez Arica1775 Chile

Vanadia (V2O5)-incorporated fibrous silica-titania (V/FST) catalysts, which were successfully synthesized using a hydrothermal method followed by the impregnation of V2O5. The catalysts were then characterized using numerous techniques, including X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, nitrogen adsorption–desorption analyses, ultraviolet–visible diffuse reflectance spectroscopy, Fourier-transform infrared, X-ray photoelectron spectroscopy, and photoluminescence (PL) analyses. The study found that varying the amount of V2O5 (1–10 wt%) had a significant impact on the physicochemical properties of the FST, which in turn improved the photodegradation efficiency of two organic compounds, ciprofloxacin (CIP) and congo red (CR). 5V/FST demonstrated the best performance in degrading 10 mg L−1 of CIP (83%) and CR (100%) at pH 3 using 0.375 g L−1 catalyst under visible light irradiation within 180 min. The highest photoactivity of 5V/FST is mainly due to higher crystallinity and the highest number of V2O5-FST interactions. Furthermore, as demonstrated by PL analysis, the 5V/FST catalyst has the most significant impact on interfacial charge transfer and reduces electron-hole recombination. The photodegradation of both contaminants follows the Langmuir-Hinshelwood pseudo-first-order model, according to the kinetic study. The scavenger investigation demonstrated that hydroxyl radicals and holes dominated species in the system, indicating that the catalyst effectively generated reactive species for pollutant degradation. A possible mechanism was also identified for FST and 5V/FST. Interestingly, V2O5 acts as an electron-hole recombination inhibitor on FST for selective hole oxidation of ciprofloxacin and congo red photodegradation. Finally, the degradation efficiency of the catalyst remained relatively stable even after five cyclic experiments, indicating its potential for long-term use in environmental remediation. © 2023

关键词： Catalysts

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The antibacterial properties of paint with the addition of ZnO nanoparticles

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AIP Conference Proceedings 2024年第1期3001卷

作者： Wulandari Agustin Muhammad Thoriq Albari Muhammad Arya Ghifari Muhammad Raffi Ghifari Devi Purnamasari Riso Sari Mandeli Department of Chemistry Faculty Mathematics and Natural Sciences Universitas Negeri Padang Padang Indonesia Department of Information Technology Faculty of Computer Sciences Universitas Brawijaya Malang Indonesia Department of Radiology Engineering Universitas Awal Bros Pekanbaru Indonesia Environmental Science Postgraduate Programme Universitas Negeri Padang Padang Indonesia Center for Advanced Material Processing Artificial Intelligence and Biophysics Informatics (CAMPBIOTICS) Universitas Negeri Padang Padang Indonesia

The purpose of this study was to see how the antibacterial characteristics of ZnO nanoparticles were applied to wall paint to determine the effectiveness of ZnO nanoparticles in killing bacteria. Where ZnO is one of the metal oxides with good anti-bacterial properties through the formation of ROS. By modifying the percentage of ZnO nanoparticles used, namely 3%, 5%, 10%, and 15%, and 0% as a blank or comparison. Antibacterial properties were obtained through evaluation using the TPC method which stands for Total Plate Count. ZnO nanoparticles were obtained by synthesizing using the precipitation method. ZnO nanoparticles were characterized using XRD Instruments to analyze the morphological structure.

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MgO’s effect on wall paint’s antibacterial properties

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AIP Conference Proceedings 2024年第1期3001卷

作者： Sintia Noveliza Muhammad Thoriq Albari Muhammad Arya Ghifari Muhammad Raffi Ghifari Devi Purnamasari Riso Sari Mandeli Department of Chemistry Faculty Mathematics and Natural Sciences Universitas Negeri Padang Padang Indonesia Department of Information Technology Faculty of Computer Sciences Universitas Brawijaya Malang Indonesia Department of Radiology Engineering Universitas Awal Bros Pekanbaru Indonesia Environmental Science Postgraduate Programme Universitas Negeri Padang Padang Indonesia Center for Advanced Material Processing Artificial Intelligence and Biophysics Informatics (CAMPBIOTICS) Universitas Negeri Padang Padang Indonesia

In this study, antibacterial properties were tested with the paint used, namely Wall Paint and Escherichia coli bacteria as test bacteria. Bacterial testing was carried out using the Disc Diffusion method, the test was carried out with variations of MgO on Wall Paint, namely 0%, 1%, 3%, 5%, and 100% for positive control as well as variations in incubation time, namely 1 day, 2 days, and 3 days where the test came from the active ROS (Reactive Oxygen Species) in MgO. Besides that, it is necessary to characterize with XRD which aims to determine the size of the nanoparticles of MgO and the crystal structure formed, also do characterization with XRF to determine the chemical composition and concentration of elements in the sample, in addition to characterization with SEM to determine the surface morphology structure samples at 1,500x, 5,000x, and 10,000x magnifications.

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Effect of adding CuO as antibacterial to Portland cement

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AIP Conference Proceedings 2024年第1期3001卷

作者： Rida Oppi Ramadhani Muhammad Thoriq Albari Muhammad Arya Ghifari Muhammad Raffi Ghifari Devi Purnamasari Riso Sari Mandeli Department of Chemistry Faculty Mathematics and Natural Sciences Universitas Negeri Padang Padang Indonesia Department of Information Technology Faculty of Computer Sciences Universitas Brawijaya Malang Indonesia Department of Radiology Engineering Universitas Awal Bros Pekanbaru Indonesia Environmental Science Postgraduate Programme Universitas Negeri Padang Padang Indonesia Center for Advanced Material Processing Artificial Intelligence and Biophysics Informatics (CAMPBIOTICS) Universitas Negeri Padang Padang Indonesia

This research uses Escherichia coli bacteria as the model bacteria to assess the efficacy of adding CuO nanoparticles as an antibacterial agent to Portland cement. The disc diffusion technique is used to assess antibacterial characteristics. Where in humid environmental conditions can trigger health problems in the community in the neighborhood where they live. CuO was added to Portland Cement at different rates of 0%, 1%, 3%, and 5% (%w/w) to conduct the assessment. To achieve a perfect dispersion, the nanoparticles were then combined with water using an ultrasonic mixer before being added to the cement. Additionally, characterisation was performed using XRD in order to establish the size of the CuO nanoparticles and the type of crystal that was generated. SEM was used for morphological investigation and characterisation oof Cement-CuO. The ensuing clear zone, which shows the region where bacterial growth was inhibited, serves as a visual indicator of antibacterial efficacy. The results showed that to produce the best antibacterial effectiveness is with a variation in the addition of CuO as much as 3% which results in a size of 7 mm in the diameter of the inhibitory zone. The presence of resistance power indicates that the resulting antibacterial cement shows an effect on the growth of Escherichia coli bacteria.

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