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Enhancing the electroactivity of supercapacitors through nitrogen doping on cellulose-derived carbon materials

Chinese Chemical Letters 2025年

作者： Siling Chen Yang Hu Sijia Zhang Xuesong Liu Zhuqun Shi Chuanxi Xiong Weiwei Wu Ruizhi Ning Quanling Yang Engineering Research Center of Molecular & Neuroimaging Ministry of Education School of Life Science and Technology Xidian University Xi'an 710126 China Interdisciplinary Research Center of Smart Sensor Academy of Advanced Interdisciplinary Research Xidian University Xi’an 710126 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology Wuhan 430070 China Shenzhen Institute Wuhan University of Technology Shenzhen 518000 China

Nowadays, higher requirements are put forward to the storage and utilization of energy, and supercapacitor is a kind of energy storage electronic devices. The resulting CA-N, with a specific surface area of 320.6 m²/g and a pore volume of 0.28 cm³/g, demonstrated a remarkable supercapacitance of 283.3 F/g. As a mesoporous material, CA-N offers numerous channels for the diffusion and absorption of electrolyte ions. Furthermore, it exhibited an impressive capacity retention rate of 98.48% after 5,000 charge-discharge cycles. These outstanding electrochemical properties highlight the potential of CA-N for applications in energy storage.

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Volcano-structured Double-gated Field Emitter Arrays;Emission Characteristics and Applications 24

Volcano-structured Double-gated Field Emitter Arrays;Emissio...

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24th International Vacuum Electronics Conference, IVEC 2023

作者： Mimura, Hidenori Neo, Yoichiro Nagao, Masayoshi Tsutaki, Kunio Kajikawa, Yoshihiro Munehiro, Takatsugu Research Institute of Electronics Shizuoka Uiversity Hamamatsu Japan National Institute of Advanced Industrial Science and Technology Tsukuba Japan NEC Network and Sensor Systems Ltd. Microwave Tubes Division Sagamihara Japan

ISBN: (纸本)9781665473217

Volcano-structured double-gated field emitter arrays (VDG-FEAs) have realized both highly focusing electron beam and high emission current. The prototype image sensor using Spindt-type VDG-FEA has obtained a reproduced image with uniform image intensity without magnetic focusing. we describe a compact image sensor using the VDG-FEA. We are developing a 300 GHz band traveling wave tube (TWT) using a thermal cathode. We believe that the VDG-FEA is a promising cathode for the 300 GHz TWT in the future. © 2023 IEEE.

关键词： Field emission

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Green synthesis of platinum/gold bimetallic nanoparticles supported onto hydrotalcite surface as heterogeneous catalyst for selective oxidation of glycerol

Green synthesis of platinum/gold bimetallic nanoparticles su...

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Catalysis and Reaction Engineering Division - Core Programming Topic at the 2011 AIChE Annual Meeting

作者： Tongsakul, Duangta Thammacharoen, Chuchaat Ekgasit, Sanong Sensor Research Unit Chulalongkorn University Bangkok Thailand Thailand Shun Nishimura and Kohki Ebitani Thailand School of Materials Science Japan Advanced Institute of Science and Technology Nomi Japan

ISBN: (纸本)9781618397393

Platinum/Gold bimetallic (Pt/Au) nanoparticles were successfully synthesized by green synthesis method in aqueous solution under mild condition using polysaccharide as a protecting agent as well as a reducing agent. The metal nanoparticles were supported on hydrotalcite (HT) surface by sol immobilization method and further utilized as heterogeneous catalyst. The surface morphology and compositions of supported platinum/gold (PtAu/HT) were analyzed by XRD and ICP-MS. The lattice parameter calculated from XRD diffraction pattern (111) of PtmAu100-mexhibited linearly with their compositions only at low Pt concentrations (i.e., 20 and 40% Pt). However the result XRD pattern support that Pt/Au metal might be formed the partially alloy or partially phase segregation at high Pt concentrations, (i.e., 60, 80, and 90% Pt). The catalysis of PtmAu100-m/HT (1 wt%) were evaluated for glycerol oxidation in base-free aqueous solution using molecular oxygen as an oxidant (glycerol/metal = 700 mol/mol). The moderate activities of PtmAu100-m/HT also remain with increasing of Au amount to 20%, in addition, the increasing of Au amount more than this value resulting decreased of an activity. It is due to the PtmAu100-m/HT particles size become larger with Au amount. However, the increasing of glycerol/metal ratio to 500 mol/mol was clearly seen that the presence of Au in Pt metal improved the selectivity toward glyceric acid, especially, Pt80Au20/HT catalyst. This phenomenon is explained by the synergistic effect of Pt/Au bimetallic resulting in the decreasing of the undesired product. Copyright© (2011) by AIChE. All rights reserved.

关键词： X ray diffraction

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Ultrafast polarization modulation with high-purity chiral quasi-BIC metasurfaces

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Chinese Optics Letters 2025年第5期23卷 053605-053605页

作者： Fangxing Lai Yubin Fan Xinbo Sha Huachun Deng Xiong Jiang Shumin Xiao Can Huang Qinghai Song Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China Department of Electrical Engineering City University of Hong Kong Hong Kong 999077 China Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor Devices Harbin 150001 China

Precise control of the polarization state of light on ultrafast time scales plays a key role in revealing the inherent chiral or anisotropic optical responses in various material systems, and it is crucial for applications that require complex polarization encoding. Here, we explore ultrafast polarization control enabled by silicon-based chiral bound state in the continuum (BIC) metasurfaces. By utilizing the intrinsic chiral mode, we achieve high-purity chiral reflection light (S 3 ∼ −0.92) and rapid modulation (∼0.4 ps) of polarization states through all-optical methods. Unlike traditional polarization modulation techniques, our approach leverages the unique advantages of slanted etching dielectric chiral BIC metasurfaces, which facilitate high- Q resonance and exhibit narrow linewidths. These advantages allow swift alterations in polarization states with minimal modulation energy consumption, which should help for greater control of light in integrated photonic applications.

关键词： Light matter interactions Modulation techniques Polarization control Q factor Refractive index Scanning electron microscopy

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Effect of Chloride Ion Concentrations on Luminescence Peak Blue Shift of Light-Emitting Diode Using Anti-Solvent Extraction of Quasi-Two-Dimensional Perovskite

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Tsinghua Science and technology 2021年第4期26卷 496-504页

作者： Baoyu Liu Xiaoping Zou Dan Chen Taoran Liu Yuhua Zuo Jun Zheng Zhi Liu Buwen Cheng Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for SensorMOE Key Laboratory for Modern Measurement and Control TechnologyBeijing Information Science and Technology UniversityBeijing 100101China the State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

In recent years,Perovskite Light-Emitting Diodes(PeLEDs)have received considerable attention in ***,with the development of PeLEDs,commercial applications of full-color PeLED technology are largely limited by the progress of blue-emitting devices,due to the uncontrollably accurate composition,unstable properties,and low *** this article,we add Cesium chloride(CsCl)to the quasi-two-dimensional(quasi-2D)perovskite precursor solution and achieve the relatively blue shifts of PeLED emission peak by introducing chloride ions for photoluminescence(PL)and electroluminescence(EL).We also found that the introduction of chlorine ions can make quasi-2D perovskite films thinner with smoother surface of 0.408 *** is interesting that the EL peaks and intensities of PeLED are adjustable under different driving voltages in high concentration chlorine-added perovskite devices,and different processes of photo-excited,photo-quenched,and photo-excited occur sequentially with the increasing driving *** work provides a path for demonstrating full-color screens in the future.

关键词： Perovskite Light-Emitting Diodes(PeLEDs) quasi-two-dimensional(quasi-2D) chloride ions blue shifts

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Balancing the power of multimedia information retrieval and usability in designing interactive TV 08

Balancing the power of multimedia information retrieval and ...

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1st International Conference on Designing Interactive User Experiences for TV and Video, UXTV08

作者： Lee, Hyowon Ferguson, Paul Gurrin, Cathal Smeaton, Alan F. O'Connor, Noel E. Park, Heeseon Centre for Digital Video Processing CLARITY: Centre for Sensor Web Technologies Dublin City University Glasnevin Dublin 9 Ireland Samsung Advanced Institute of Technology Samsung Electronics Korea Republic of

ISBN: (纸本)9781605581002

Steady progress in the field, of multimedia information retrieval (MMIR) promises a useful set of tools that could provide new usage scenarios and features to enhance the user experience in today's digital media applications. In the interactive TV domain, the simplicity of interaction is more crucial than in any other digital media domain and ultimately determines the success or otherwise of any new applications. Thus when integrating emerging tools like MMIR into interactive TV, the increase in interface complexity and sophistication resulting from these features can easily reduce its actual usability. In this paper we describe a design strategy we developed as a result of our efforts in balancing the power of emerging multimedia information retrieval techniques and maintaining the simplicity of the interface in interactive TV. By providing multiple levels of interface sophistication in increasing order as a viewer repeatedly presses the same button on their remote control, we provide a layered interface that can accommodate viewers requiring varying degrees of power and simplicity. A series of screen shots from the system we have actually developed and built illustrates how this is achieved. Copyright 2008 ACM.

关键词： Digital storage

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Performance evaluation of ASTER cryocooler in orbit

Performance evaluation of ASTER cryocooler in orbit

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Conference on sensors, Systems and Next-Generation Satellites VI

作者： Kawada, M Akao, H Kobayashi, M Akagi, S Maekawa, T Nishihara, O Kudoh, M Fujisada, H National Institute of Advanced Industrial Science and Technology (Japan) Mitsubishi Electric Corp. (Japan) Fujitsu Ltd. (Japan) Japan Resources Observation System Organization (Japan) Sensor Information Lab. Corp. (Japan)

ISBN: (纸本)0819446637

The advanced spaceborne thermal emission and reflection radiometer (ASTER) was developed by the Ministry of Economy, Trade and Industry (METI) for installation in the EOS-AM1 spacecraft. The ASTER consists of a visible and near-infrared radiometer (VNIR), a short-wave infrared radiometer (SWIR) and a thermal infrared radiometer (TIR). Two cryocoolers are required to cool the infrared detectors for the SWIR and the TIR subsystems. Two cryocoolers have been operating in orbit for over 22000 hours. The temperature of each detector was stabilized in the allowable temperature range. Long-term data have been acquired on the cooling performance and power consumption (or motor current) under normal operating conditions for each cryocooler, and they have also been evaluated based on the detector temperature and temperature stability in this phase. In this paper, the following are described: outline of ground test results and performance of the ASTER cryocooler in orbit for over 22000 hours.

关键词： terra ASTER SWIR TIR space cryocooler cryocooler performance

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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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Gravitational wave echoes from strange quark stars in the equation of state with density-dependent quark masses

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Nuclear Science and Techniques 2023年第11期34卷 112-119页

作者： Jian‑Feng Xu Lei Cui Zhen‑Yan Lu Cheng‑Jun Xia Guang‑Xiong Peng School of arts and sciences Suqian UniversitySuqian 223800China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and ElectronicsHunan University of Science and TechnologyXiangtan 411201China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

According to the recent studies,the gravitational wave(GW)echoes are expected to be generated by quark stars composed of ultrastiff quark *** ultrastiff equations of state(EOS)for quark matter were usually obtained either by a simple bag model with artificially assigned sound velocity or by employing interacting strange quark matter(SQM)depicted by simple reparameterization and *** this study,we investigate GW echoes with EOSs for SQM in the framework of the equivparticle model with density-dependent quark masses and pairing *** conclude that strange quark stars(SQSs)can be sufficiently compact to possess a photon sphere capable of generating GW echoes with frequencies in the range of approximately 20 ***,SQSs cannot account for the observed 72 Hz signal in GW170817 ***,we determined that quark-pairing effects play a crucial role in enabling SQSs to satisfy the necessary conditions for producing these types of echoes.

关键词： Strange quark star Gravitational wave echoes Color-flavour-locked phase Strange quark matter

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Manipulating functional groups between polyvinylidene difluoride and nanoparticles for high-performance triboelectric nanogenerator

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Nano Research 2023年第9期16卷 11855-11861页

作者： Zekun Li Lu Zhang Lihao Guo Wenwen Hu Aifang Yu Junyi Zhai CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China School of Advanced Materials and Nanotechnology Interdisciplinary Research Center of Smart SensorsXidian UniversityXi’an 712000China School of Aerospace Science and Technology Xidian UniversityXi’an 712000China

Interface functional groups play an essential role in regulating the electrical properties of bulk *** this work,we designed a novel strategy to explore a new way to enhance triboelectric performance by regulating the functional groups between nano-fillers and polymer matrix without obvious changes in the dielectric *** silica nanoparticles(SNPs)modified perfluoro-silane coupling agents(PFSCAs)with different chain lengths were added to the polyvinylidene difluoride to regulate the transferred charge density(TCD)of triboelectric nanogenerators(TENGs).When the doping concentration of perfluorodecyl modified SNPs is 2.25 wt.%,the nanocomposite film based TENG exhibits the maximum TCD of 166μC/m^(2)and power density of 3.12 W/m^(2)which are 6 times and 39 times as big as those of pure polyvinylidene difluoride(PVDF)*** charge accumulation and decay process show that interface functional groups dominate the performance of ***,a Fermi level model is proposed and why the TCD could be regulated by the concentration of nanoparticles in bulk materials is *** work provides a new concept for understanding the performance of TENG independent dielectric constant and points out a new direction for enhancing TENG’s performance,since wealthy functional groups with selectivity are applicable.

关键词： triboelectric nanogenerators functional groups surface modification interfacial regulation transferred charge density

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