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A novel approach for ultrafast and highly sensitive carbon monoxide gas sensor based on PEDOT/GO nanocomposite

Materials Science in Semiconductor Processing 2023年 155卷

作者： Farea, Maamon A. Mohammed, Hamed Y. Shirsat, Sumedh M. Tsai, Meng-Lin Murshed, Mohammad N. El Sayed, Mohamed E. Naji, Sufyan Samir, Ahmed Alsharabi, Rim M. Shirsat, Mahendra D. RUSA Centre for Advanced Sensor Technology Department of Physics Dr. Babasaheb Ambedkar Marathwada University MS Aurangabad431004 India Department of Physics Ibb University Ibb Yemen Department of physics Taiz University Taiz Yemen Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei City106 Taiwan Physics Department Faculty of Science and Arts King Khalid University Muhayl Asser Saudi Arabia Center of Plasma Technology Al-Azhar University Cairo Egypt Department of Physics Sana'a University Yemen

An ultrafast and highly sensitive carbon monoxide gas sensor based on PEDOT/GO nanocomposites has been addressed in this work. A new approach was utilized to materialize PEDOT/GO via a straightforward and inexpensive polymerization in the presence of GO. Many characterization techniques, including FE-SEM, AFM, TGA, XRD, FTIR, Raman spectroscopy, and UV–Vis spectroscopy, have been utilized to confirm the successful formation of the PEDOT/GO nanocomposite. Moreover, the chemosensitivity modality has been used to measure the materials’ resistivity and sensing performance. The PEDOT/GO-based sensor exhibits excellent sensitivity when exposed to a wide range of CO concentrations, from 20 ppm to 270 ppm. Our experimental outcomes demonstrated that incorporating PEDOT into GO enhanced the sensor sensitivity (from 16% for pure PEDOT to 44% for composite), which resulted in quick response/recovery times (43 s/42 s) and exceptional long-term stability at room temperature. Based on the results of this work, it seems likely that the proposed sensor, with its low cost, simple development process, and excellent sensing performance, could be a good candidate for real-time CO detection. © 2022

关键词： Room temperature

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Information sensing

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Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers 2010年第8期64卷 1126-1135页

作者： Ohta, Jun Takayanagi, Isao Sumi, Hirofumi Sugawa, Shigetoshi Oshima, Hiroyuki Kawahito, Shoji Komuro, Takashi Hamamoto, Takayuki Ohtake, Hiroshi Mutoh, Nobuhiko Ueno, Masashi Onoda, Atsushi School of Materials Science Nara Institute of Science and Technology Nara Japan Design Center Aptina Japan LLC Tokyo Japan Image Sensor Business Div Semiconductor Business Group Sony Corporation Kanagawa Japan School of Engineering Tohoku University Miyagi Japan Electronic Imaging Products Development Center Research and Development Management Headquarters Fujifilm Corporation Miyagi Japan Research Institute of Electronics Shizuoka University Shizuoka Japan University of Tokyo Tokyo Japan Tokyo University of Science Tokyo Japan NHK Science Technical Research Laboratories Tokyo Japan Semiconductor Company Panasonic Corporation Kyoto Japan Advanced Technology R and D Center Mitsubishi Electric Corporation Hyogo Japan Hamamatsu Photonics K.K. Shizuoka Japan

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Charge Govern Ion-Selective Mechanism of Yx2 Desalination Pore Using High-Throughput Computations And Machine Learning

SSRN

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SSRN 2024年

作者： Liang, Lijun Li, Jiachen Li, Tianyu Kong, Zhe Peng, Yiran Shen, Jia-Wei Zhang, Li Center of Advanced Optoelectronic Materials and Devices Key Laboratory of Novel Materials for Sensor of Zhejiang Province College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China Department of Chemistry China College of Automation Hangzhou Dianzi University Hangzhou310018 China School of Pharmacy Hangzhou Normal University Hangzhou311121 China School of Biological and Chemical Engineering Zhejiang University of Science and Technology Hangzhou310023 China

Energy-efficient and low-cost desalination of water continues to be a problem that society is facing. With the advances in nanotechnology, a variety of nanopore membranes have emerged for desalination. In particular, YX2 nanopores (Y=W, Mo, etc. and X=S, Se, Te, etc.) have been considered as promising membranes for water purification. In this work, we used a combination of high-throughput molecular dynamics simulations and machine learning to reveal the nanopore mass transfer mechanism and rationally design the YX2 nanopore. The pore size and the charge of the pore mouth were found to be the main factors affecting water permeation and salt rejection, as discovered through the machine learning study. The physical-chemical analysis provides us with a deep understanding of the charge-governed mechanism on the desalination performance of YX2 nanopores. It revealed that YX2 nanopores with a conical shape and minimized pore charges could be ideal candidates for excellent desalination performance. Based on this, we designed the YX2 pore with a specific charge distribution, which could achieve high water permeation with high salt rejection. Therefore, the combination of machine learning and high-throughput computation methods could aid in designing materials with excellent performance for desalination. © 2024, The Authors. All rights reserved.

关键词： Desalination

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Effect of Poly Ethylene Glycol (PEG) on Structural, Thermal and Photoluminescence Properties of CdO Nanoparticles For Optoelectronic Applications

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Materials Today: Proceedings 2019年 9卷 175-183页

作者： P Lokanatha Reddy Kalim Deshmukh K. Chidambaram Basheer Ahamed Kishor Kumar Sadasivuni Deepalekshmi Ponnamma Rajasekhar Lakshmipathy Desagani Dayananda S.K. Khadheer Pasha Sensor Laboratory Materials Physics Division School of Advanced Sciences VIT University Vellore Tamil Nadu 632014 India Department of Physics B.S. Abdur Rahman University Chennai 600 048 TN India Mechanical & Industrial Engineering Department Qatar University P.O. Box 2713 Doha Qatar Center for Advanced Materials Qatar University P.O. Box 2713 Doha Qatar Centre for Material Science KCG College of Technology Chennai Tamil Nadu India Department of SSCU IISC Bangalore Karnataka 560012 India Department of Physics VIT-AP University Amaravati Campus Guntur 522501 Andhra Pradesh India

Current study deals with capped / uncapped Cadmium Oxide Nanoparticles (CdO NPs) synthesized by chemical precipitation technique. Structural, morphological, thermal and optical properties of these samples were investigated by XRD, TGA, TEM and PL spectra. XRD revealed the face centered cubic structure of CdO which was depicted at 400 ° C for both samples. The calculated XRD values were in good consistent with the predicted values of TEM analysis and also with Thermogravimetric analysis. Intense emission peaks at 474 nm and 615 nm were observed in PL spectra at 325 nm excitation wavelengths in uncapped CdO NPs, while capped CdO NPs showed peaks with less intensity. These emissions may be due to the indirect near band gap emission and excitonic transition of CdO NPs. Hence based on these results it could be concluded that capping agent (PEG) tuned CdO NPs can be used for optoelectronic device applications.

关键词： Cadmium oxide Nanoparticles (CdO NPs) Polyethylene glycol (PEG) Transition Electron Microscopy (TEM) Photoluminescence (PL)

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Designing Desalination Mxene Membranes by Machine Learning and Global Optimization Algorithm

SSRN

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SSRN 2024年

作者： Liang, Lijun Ma, Xuancao Lan, Chengyi Lin, Haoran Peng, Yiran Li, Tianyu Wang, Jiadong Azamat, Jafar College of Automation Hangzhou Dianzi University Hangzhou310018 China Center of Advanced Optoelectronic Materials and Devices Key Laboratory of Novel Materials for Sensor of Zhejiang Province College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China School of Data Science and Artificial Intelligence Wenzhou University of Technology Wenzhou325035 China Department of Chemistry Education Farhangian University P.O. Box 14665-889 Tehran Iran

The development of energy-efficient and low-cost desalination techniques is crucial. Among these techniques, reverse osmosis (RO) is considered one of the most promising solutions for addressing the global water crisis. It has been widely implemented for both large-scale and distributed water desalination. One such promising desalination membrane is MXene with nanopores, thanks to its unique properties. However, accurately predicting the performance of the desalination process or designing new materials is challenging due to the complexity of the process and the various tunable properties of the membranes and nanopores themselves. The combination of machine learning (ML) and global optimization algorithms offers a superior approach to material design from multiple perspectives. Our study demonstrates that Ti3C2O2 with a specific charge on the nanopore mouth is an excellent candidate, as determined by the particle swarm optimization algorithm. By analyzing water density and ion density along the nanopore, we gain a deep understanding of how pore charge and functionalized groups affect salt rejection and water permeation. The integration of ML and global optimization algorithms can facilitate the design of materials with outstanding desalination performance. © 2024, The Authors. All rights reserved.

关键词： Desalination

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Highly sensitive strain sensor using silver nanowire/poly(3,4-ethylenedioxythiophene): Polystyrene sulfonate coated natural rubber

SPE Polymers

引用

SPE Polymers 2021年第3期2卷 224-232页

作者： Thana, Kittiphong Jaisutti, Rawat Petchsang, Nattasamon Department of Physics Faculty of Science and Technology Thammasat University Pathumthani Thailand Research Unit in Innovative Sensor and Nanoelectronic Devices Thammasat University Pathumthani Thailand Department of Materials Science Faculty of Science Kasetsart University Bangkok Thailand Specialized Center of Rubber and Polymer Materials for Agriculture and Industry (RPM) Faculty of Science Kasetsart University Bangkok Thailand Center for Advanced Studies in Nanotechnology for Chemical Food and Agricultural Industries Kasetsart University Bangkok Thailand

Stretchable strain sensors have attracted much attention for health monitoring systems, human-machine interfaces, and robotics. However, there is still a challenge to develop strain sensors with excellent mechanical stretchability and high strain-sensing region as well as cost-effective fabrication process. Herein, a highly sensitive, reliable and low-cost strain sensors are developed using a resistive transduction of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and silver nanowire (Ag NW). Natural rubber was used as a stretchable substrate material, and a gold leaf was used as electrodes placed between PEDOT:PSS and Ag NW. The electrical resistance of this novel strain sensor shows an average value of 74.72 ± 14.65 Ω with a large sensing range up to 50% strain and sensing sensitivity of 418. The sensing response does not deteriorate after 750 stretching-releasing cycles and the sensor exhibits high stability after storage in air for more than 53 days. Concerning finger and joint movement, the wearable strain sensor demonstrates a stable output signal and distinguishes response under different bending and stretching. These advantages make it potential applications in wearable electronic devices and promising development in healthcare management. © 2021 The Authors. SPE Polymers published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers.

关键词： natural rubber PEDOT:PSS plasma treatment silver nanowires strain sensor

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The PLATO mission

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Experimental Astronomy 2025年第3期59卷 1-111页

作者： Rauer, Heike Aerts, Conny Cabrera, Juan Deleuil, Magali Erikson, Anders Gizon, Laurent Goupil, Mariejo Heras, Ana Walloschek, Thomas Lorenzo-Alvarez, Jose Marliani, Filippo Martin-Garcia, César Mas-Hesse, J. Miguel O’Rourke, Laurence Osborn, Hugh Pagano, Isabella Piotto, Giampaolo Pollacco, Don Ragazzoni, Roberto Ramsay, Gavin Udry, Stéphane Appourchaux, Thierry Benz, Willy Brandeker, Alexis Güdel, Manuel Janot-Pacheco, Eduardo Kabath, Petr Kjeldsen, Hans Min, Michiel Santos, Nuno Smith, Alexis Suarez, Juan-Carlos Werner, Stephanie C. Aboudan, Alessio Abreu, Manuel Acuña, Lorena Adams, Moritz Adibekyan, Vardan Affer, Laura Agneray, François Agnor, Craig Aguirre Børsen-Koch, Victor Ahmed, Saad Aigrain, Suzanne Al-Bahlawan, Ashraf Alcacera Gil, Ma de los Angeles Alei, Eleonora Alencar, Silvia Alexander, Richard Alfonso-Garzón, Julia Alibert, Yann Allende Prieto, Carlos Almeida, Leonardo Alonso Sobrino, Roi Altavilla, Giuseppe Althaus, Christian Alvarez Trujillo, Luis Alonso Amarsi, Anish Ammler-von Eiff, Matthias Amôres, Eduardo Andrade, Laerte Antoniadis-Karnavas, Alexandros António, Carlos Aparicio del Moral, Beatriz Appolloni, Matteo Arena, Claudio Armstrong, David Aroca Aliaga, Jose Asplund, Martin Audenaert, Jeroen Auricchio, Natalia Avelino, Pedro Baeke, Ann Baillié, Kevin Balado, Ana Ballber Balagueró, Pau Balestra, Andrea Ball, Warrick Ballans, Herve Ballot, Jerome Barban, Caroline Barbary, Gaële Barbieri, Mauro Barceló Forteza, Sebastià Barker, Adrian Barklem, Paul Barnes, Sydney Barrado Navascues, David Barragan, Oscar Baruteau, Clément Basu, Sarbani Baudin, Frederic Baumeister, Philipp Bayliss, Daniel Bazot, Michael Beck, Paul G. Belkacem, Kevin Bellinger, Earl Benatti, Serena Benomar, Othman Bérard, Diane Bergemann, Maria Bergomi, Maria Bernardo, Pierre Biazzo, Katia Bignamini, Andrea Bigot, Lionel Billot, Nicolas Binet, Martin Biondi, David Biondi, Federico Birch, Aaron C. Bitsch, Bertram Bluhm Ceballos, Paz Victoria Bódi, Attila Bognár, Zsófia Boisse, Isabelle Bolmont, Emeline Bonanno, Alfio Bonavita, Institut für Planetenforschung Deutsches Zentrum für Luft- und Raumfahrt DLR Rutherfordstrasse 2 Berlin 12489 Germany Fachbereich Geowissenschaften Institut für Geologische Freie Universität Berlin Malteserstr. 74-100 Berlin 12249 Germany Institute of Astronomy KU Leuven Leuven Belgium CNRS CNES LAM Aix Marseille University Marseille France Max Planck Institute for Solar System Research Göttingen Germany LESIA Paris Observatory PSL University Sorbonne University Paris Cité University CNRS Meudon France ESTEC European Space Agency Noordwijk Netherlands ESAC European Space Agency Madrid Spain Centro de Astrobiología CSIC-INTA Campus ESAC Madrid Spain Center for Space and Habitability University of Bern Bern Switzerland INAF - Osservatorio Astrofisico di Catania Catania Italy Department of Physics and Astronomy University of Padua Padua Italy Department of Physics University of Warwick Coventry United Kingdom Astronomical Observatory of Padova INAF - Italian National Institute for Astrophysics Padua Italy Armagh Observatory and Planetarium College Hill Armagh United Kingdom Geneve Observatory University of Geneve Geneve Switzerland IAS University of Paris-Saclay Orsay France AlbaNove University Centre Stockholm University Stockholm Sweden Department of Astrophysics University of Vienna Vienna Austria Department of Astronomy University of Sao Paulo Sao Paulo Brazil Astronomical Institute of the Czech Academy of Sciences Ondřejov Czech Republic Department of Physics and Astronomy Aarhus University Aarhus Denmark Institute for Space Research SRON Leiden Netherlands Instituto de Astrofísica e Ciências do Espaço CAUP Universidade do Porto Porto Portugal Departamento de Física e Astronomia Faculdade da Ci ncias Universidade do Porto Porto Portugal Mullard Space Science Laboratory University College London Holmbury Saint Mary United Kingdom Dept. Theoretical Physics and the Cosmos University of Granada Granada Spain Centre for Plan

PLATO (PLAnetary Transits and Oscillations of stars) is ESA’s M3 mission designed to detect and characterise extrasolar planets and perform asteroseismic monitoring of a large number of stars. PLATO will detect small planets (down to <2REarth) around bright stars (<11 mag), including terrestrial planets in the habitable zone of solar-like stars. With the complement of radial velocity observations from the ground, planets will be characterised for their radius, mass, and age with high accuracy (5%, 10%, 10% for an Earth-Sun combination respectively). PLATO will provide us with a large-scale catalogue of well-characterised small planets up to intermediate orbital periods, relevant for a meaningful comparison to planet formation theories and to better understand planet evolution. It will make possible comparative exoplanetology to place our Solar System planets in a broader context. In parallel, PLATO will study (host) stars using asteroseismology, allowing us to determine the stellar properties with high accuracy, substantially enhancing our knowledge of stellar structure and evolution. The payload instrument consists of 26 cameras with 12cm aperture each. For at least four years, the mission will perform high-precision photometric measurements. Here we review the science objectives, present PLATO‘s target samples and fields, provide an overview of expected core science performance as well as a description of the instrument and the mission profile towards the end of the serial production of the flight cameras. PLATO is scheduled for a launch date end 2026. This overview therefore provides a summary of the mission to the community in preparation of the upcoming operational phases. © The Author(s) 2025.

关键词： Asteroseismology Exoplanets PLATO mission

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The Immunomodulatory Effects of RNA-Based Biomaterials on Bone Regeneration

SSRN

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SSRN 2023年

作者： Wang, Chen-Yu Qin, Zi-Xuan Wei, Yu Hao, Jia-Xin Zhu, Yi-Fei Zhao, Fei Jiao, Kai Ehrlich, Hermann Tay, Franklin R. Niu, Li-Na State Key Laboratory of Military Stomatology National Clinical Research Center for Oral Diseases Shaanxi Key Laboratory of Stomatology School of Stomatology The Fourth Military Medical University Xi’an China Shanxi Medical University School Hospital of Stomatology Taiyuan China The Third Affiliated Hospital of Xinxiang Medical University Xinxiang China Institute of Electronic and Sensor Materials TU Bergakademie Freiberg Freiberg Germany Center for Advanced Technology Adam Mickiewicz University Poznan Poland The Dental College of Georgia Augusta University Augusta United States

The use of RNA as therapeutic agents is a visionary idea in contemporary medicine. Some forms of RNA can modulate the immune response of the host to enhance tissue regeneration events such as osteogenesis. Herein, RNA molecules commercially available for immunomodulatory applications (imRNA) were used to prepare biomaterials for bone regeneration. The polyanionic imRNA stabilized calcium phosphate ionic clusters to produce imRNA-ACP that had the capacity to mineralize the intrafibrillar compartments of collagen fibrils. Incorporating imRNA-ACP into collagen scaffolds resulted in rapid new bone formation in cranial defects of mice. Both in vivo and in vitro results demonstrated that macrophage polarization was highly-sensitive to the imRNA-ACP containing collagen scaffolds. Macrophages were polarized into the anti-inflammatory M2 phenotype that produced anti-inflammation cytokines and growth factors. The favorable osteoimmunological microenvironment created by the scaffolds prevented their immunorejection and facilitated osteogenesis. The potential of RNA in creating immunomodulatory biomaterials has been underestimated in the past. With the competitive edge of facile synthesis and excellent biocompatibility, the imRNA-based biomaterials are potentially useful for future bone tissue engineering applications. © 2023, The Authors. All rights reserved.

关键词： Polarization

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K2RENb5O15 (RE=Ce,Pr,Nd,Sm,Gd-Ho): A family of Quasi-One-Dimensional spinchain compounds with large interchain distance

arXiv

引用

arXiv 2024年

作者： Zeng, Qingyuan Ge, Han Wu, Maofeng Ruan, Shaoheng Li, Tiantian Wang, Zhaosheng Li, Jingxin Ling, Langsheng Tong, Wei Huang, Shuai Liu, Andi Zhou, Jin Xia, Zhengcai Sheng, Jieming Wu, Liusuo Tian, Zhaoming Wuhan National High Magnetic Field center and School of Physics Huazhong University of Science and Technology Wuhan430074 China Department of Physics Southern University of Science and Technology Shenzhen518055 China Anhui Key Laboratory of Low-energy Quantum Materials and Devices High Magnetic Field Laboratory HFIPS Chinese Academy of Sciences Hefei Anhui230031 China Key Laboratory of Novel Materials for Sensor of Zhejiang Province Institute of Material Physics Hangzhou Dianzi University Hangzhou310018 China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and Technology Shenzhen518055 China

One-dimensional (1D) spin chain systems have received special attention to discover the novel magnetic ground states and emergent phenomena, while the magnetic studies on rare-earth (RE)- based 1D spin chain materials are still rare. Here, we report the synthesis, structure and magnetic behaviors on a family of tetragonal tungsten-bronze (TTB) structure K2RENb5O15 (RE = Ce, Pr, Nd, Sm, Gd-Ho) compounds, which consist of 1D linear spin-chain structure built by RE3+ ions along the c-axis and well spatially separated by the nonmagnetic K/Nb-O polyhedrons with large interchain distances of ∼ 8.80-8.88 Å in the ab-plane. The low temperature magnetic measurements reveal the absence of long-range magnetic order down to 1.8 K for all serial K2RENb5O15 compounds and the dominant ferromagnetic interactions for RE=Ce,Dy and antiferromagnetic interactions for other members. Among them, K2GdNb5O15 with spin only magnetic moment S=7/2, exhibits a long-range magnetic order with TN∼0.31 K and strong spin fluctuations at low temperatures due to its lowdimension characteristics. Moreover, a large magnetocaloric effect under low field change (ΔB) of ΔB = 0-2 T is realized at temperatures below 1 K for K2GdNb5O15, letting it as an ideal candidate for adiabatic magnetic refrigeration applications at sub-kelvin temperatures. The K2RENb5O15 become a rare family of insulting RE-based magnets to explore the novel 1D spin chain physics beyond the 3d TM-based counterparts, in terms of its combination of low dimension, strong spin-orbital coupling and the rich diversity of RE ions. © 2024, CC BY.

关键词： Rare earths

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A Web-Based Campus Navigation System with Mobile Augmented Reality Intervention

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Journal of Physics: Conference Series 2021年第1期1997卷

作者： Noradila Nordin Marni Azira Markom Farhana Aqilah Suhaimi Syaimaa' Ishak School of Computing Universiti Utara Malaysia 06010 Sintok Kedah Malaysia Advanced Sensor Technology Center of Excellence Universiti Malaysia Perlis Kampus Pauh Putra 02600 Arau Perlis Malaysia

In this era of information technology, the introduction of new and greatly improved technologies is becoming vital especially with the progressive development of computing power to fulfill current technological needs. Augmented Reality (AR) is a part of the emerging technologies that are gaining great attention and interest with new and better innovations being developed. AR is an immersive technology where it complements real-world objects together with computer-generated objects to give more details and meaning to the objects in the real world. AR has been successfully growing nowadays in many industries, mainly in gaming and entertainment, education and navigation. However, AR has not been standardized and to be widely used in navigation systems even though there are many applications developed for this purpose. This paper proposed a web-based AR-UUM Campus Navigation System using ARToolKit, that is accessible via mobile devices that uses AR to overlay the information as images of the searched location on campus, especially for indoor navigations for lecture halls, tutorial rooms, laboratories, and offices which rarely are covered by the normal maps. Based on the respondents' evaluation, they managed to successfully interact with the AR-UUM Campus Navigation System, however, some improvements are required in terms of the functions expected from the system. Nevertheless, the use of AR in a navigation system shows promising results and has the potential to be widely used due to high interest in augmented reality.

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