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SSRN 2024年

作者： Hu, Chuanpeng Wang, Wencheng Wang, Wenqi Sun, Weixiang Wang, Hanchao Meng, Jie Liu, Yupeng Li, Wentao Wu, Xiaoqing Wang, Daoai College of Civil Engineering Fuzhou University Fuzhou350116 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai264000 China Key Laboratory of Rubber-Plastics the Ministry of Education School of Polymer Science & Engineering Qingdao University of Science and Technology Qingdao266042 China China Three Gorges University China

Triboelectric nanogenerators (TENGs), as a new strategy for harvesting energy from nature, have attracted widespread attention in the field of water droplet energy capture. As a friction layer material, the solid‒liquid electrification phenomenon of coatings has been studied. However, little attention is paid to the influence of the surface wettability of the coating itself on the electrical signal of the droplet generator. In this study, alkyl/phenyl pure silicone resin was utilized as a substitute for fluorine-containing polymer materials. This substitution not only mitigated the risk of environmental pollution from TENG friction materials but also resulted in varying wettability of the silicone resin coating through plasma and surface structure treatment. The droplet-based Double-electrode (D-TENG) and Single-electrode (S-TENG) coating-based triboelectric nanogenerators were fabricated. Through the integration of a high-speed camera and ammeter, the motion state of water droplets on surfaces with different wettability closely correlates with their charged behavior. This correlation is utilized to observe the motion state of water droplets on hydrophilic-hydrophobic surfaces in four stages: contact, spreading, contraction, and sliding. Under the double-electrode structure, as the water contact angle of the coating increased from 6.84° to 139.77°, the short-circuit current initially increased and then decreased, peaking at 466 µA when the contact angle was 98.48°, representing a 677-fold increase from the initial 0.689 µA. In the single electrode structure, the short-circuit current increased from 2.66 nA to 700 nA, indicating a 263-fold increase. Studying the varied wettability of the surface of silicone resin coating aids in comprehending the application of the coating material in solid-liquid friction electrification for energy collection. Furthermore, it offers insight into selecting appropriate coating materials for friction coatings in future applications. ©

关键词： Silicones

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Optimization of lowpass filtered and amplified PRBS phase modulation for SBS mitigation 8

Optimization of lowpass filtered and amplified PRBS phase mo...

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8th Symposium on Novel Photoelectronic Detection Technology and Applications

作者： Li, Binglin Yang, Yifeng Liu, Meizhong Wang, Hanbin Gao, Heng Xian, Yuqiao He, Bing Zhou, Jun Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Department of Physics Harbin Institute of Technology Harbin150001 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

In this work, we investigate the SBS mitigation of the pseudo random bit sequences (PRBS) modulation analytically and numerically. The lightwave is phase modulated by a Butterworth lowpass filtered and amplified PRBS signal, and the SBS suppressing capability versus the parameters such as the filter order, the filter cutoff frequency, the modulation depth, and the pattern length are illustrated. Therefore, we redefine the modulation depth by normalized RMS voltage to integrate binary sequences modulation signal and multi-value sequences modulation signal. On this basis, we demonstrate the impact of pattern length, modulation depth and modulation cutting rate on SBS mitigation and found the corresponding optimal component of n=9, 22.72 dBm and 0.54. On this situation, contrast to the unfiltered PRBS phase modulation scheme, a 17.7% enhancement of normalized SBS threshold can be obtained by using normalized power in the barrel to estimates the linewidth. This work may provide a new idea for SBS mitigation by lowpass filtered PRBS phase modulation in narrow linewidth fiber amplifiers. © 2022 SPIE

关键词： Binary sequences

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Generation of modulated magnetic structures based on cluster multipole expansion: Application to α-Mn and CoM3S6

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Physical Review B 2023年第1期107卷 014407-014407页

作者： Yuki Yanagi Hiroaki Kusunose Takuya Nomoto Ryotaro Arita Michi-To Suzuki Center for Computational Materials Science Institute for Materials Research Tohoku University Sendai Miyagi 950-8577 Japan Liberal Arts and Sciences Toyama Prefectural University Imizu Toyama 939-0398 Japan Department of Physics Meiji University Kawasaki 214-8571 Japan The Institute for Solid State Physics The University of Tokyo Kashiwanoha 5-1-5 Chiba 277-8581 Japan Research Center for Advanced Science and Technology University of Tokyo Komaba Meguro-ku Tokyo 153-8904 Japan Center for Emergent Matter Science RIKEN Wako Saitama 351-0198 Japan Center for Spintronics Research Network Graduate School of Engineering Science Osaka University Toyonaka Osaka 560-8531 Japan

We present a systematic method to automatically generate symmetry-adapted magnetic structures for a given crystal structure and general propagation vector k as an efficient approach of the analysis of complex modulated magnetic structures. The method is developed as an extension of the generation scheme based on the multipole expansion, which was demonstrated only for the propagation vector k=0 [M.-T. Suzuki et al., Phys. Rev. B 99, 174407 (2019)]. The symmetry-adapted magnetic structures characterized with an ordering vector k are obtained by mapping the multipole magnetic alignments on a virtual cluster to the periodic crystal structure with the phase factor for the wave vector k. This method provides all magnetic bases compatible with irreducible representations under a k group for a given crystal structure and wave vector k. Multiple-k magnetic structures are derived from a superposition of single-k magnetic bases related to the space group symmetry. We apply the scheme to deduce the magnetic structures of α-Mn and CoM3S6 (M=Nb, Ta), in which the large anomalous Hall effect has recently been observed in antiferromagnetic phases, and identify the magnetic structures inducing anomalous Hall effect without net magnetization. The physical phenomena originating from emergent multipoles in the ordered phases are also discussed based on the Landau theory.

关键词： Anomalous Hall effect Magnetic interactions Magnetic order Order parameters Antiferromagnets Noncollinear magnets Group theory Symmetries in condensed matter

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Length and conjugation-controlled memristive functions of metallopolymer monolayers

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science China materials 2025年第4期68卷 998-1003页

作者： Chang Wei Ziming Zhou Shumu Li Yuan Li Wenjing Hong Xuan Pang Mao Li State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China University of Science and Technology of China Hefei230026China Key Laboratory of Analytical Chemistry for Living Biosystems Institute of ChemistryChinese Academy of SciencesBeijing Mass Spectrum CenterBeijing100190China Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing100084China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012China

solid-phase synthesis as a bottom-up strategy may be a superior way to integrate sophisticated functions into an ultrathin film for miniaturized ***,the sluggish reaction dynamics at the solid-liquid interface have been a great ***,we present four electrochemical reactions for rapidly synthesizing length and conjugation-controlled metallopolymer *** electrosynthesis requires self-assembled monolayers as templates as a prerequisite to predefine the growth and orientation of the *** involves a pair of redox reactions:the oxidation self-coupling of pyrene or carbazole,and the reduction self-coupling of the alkyne or vinyl,*** can form conjugation-controlled connections of monomers and provide different lengths of *** resulting metallopolymer monolayers show similar values in thickness and theoretical molecular length,indicating that these metallopolymers stand almost vertically and uniaxially on electrodes with minimum polymer *** crystalline monolayers exhibit both high modulus and conductance while presenting the memristive functions with optical and electrical binary responses as a function of the length and conjugation-controlled metallopolymer *** is highly anticipated that critical factors including reproducibility,speed,and operational simplicity with the robust design of various molecular junctions will enable rapid automated synthesis of two-dimensional semiconductors for integrated and miniaturized optoelectric devices.

关键词： solid-phase synthesis solid-phase electrosynthesis polymer monolayer polymer brush memristor

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Mid-wavelength nBn photodetector with high operating temperature and low dark current based on InAs/InAsSb superlattice absorber

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Chinese Optics Letters 2024年第1期22卷 123-127页

作者：曹澎王天财彭红玲李占国 Qiandong Zhuang 郑婉华 Laboratory of Solid-State Optoelectronics Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of Electronic and Communication Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Physics Changchun Normal UniversityChangchun 130022China Physics Department Lancaster UniversityLancaster LA14YBUK

In this paper,we demonstrate nBn InAs/InAsSb type II superlattice(T2SL)photodetectors with AlAsSb as the barrier that targets mid-wavelength infrared(MWIR)*** improve operating temperature and suppress dark current,a specific Sb soaking technique was employed to improve the interface abruptness of the superlattice with device passivation using a SiO_(2) *** result in ultralow dark current density of 6.28×10^(-6)A/cm^(2)and 0.31 A/cm^(2)under-600 mV at 97 K and297 K,respectively,which is lower than most reported InAs/InAsSb-based MWIR *** resistance area product values of 3.20×10^(4)Ω·cm^(2)and 1.32Ω·cm^(2)were obtained at 97 K and 297 K.A peak responsivity of 0.39 A/W with a cutoff wavelength around 5.5μm and a peak detectivity of 2.1×10^(9)cm·Hz^(1/2)/W were obtained at a high operating temperature up to 237 K.

关键词： mid-wavelength infrared photodetector InAs/InAsSb superlattice high operating temperature dark current

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Understanding Competitive Cu2+ and Zn2+ Adsorption Onto Functionalized Cellulose Fiber Via Experimental and Theoretical Approach

SSRN

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SSRN 2024年

作者： Zhao, Dezhi Wang, Hexiang Wang, Zheng Lu, Shuang State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao066000 China Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste Yanshan University Qinhuangdao066000 China School of Civil Engineering Harbin Institute of Technology Harbin150090 China

In this study, a novel functionalized cellulose fiber (AO-Cell) was prepared and its adsorption mechanism on Cu2+ and Zn2+ was investigated by the molecular dynamic simulation method. Chemical structure and surface property of the AO-Cell were also tested. The results showed that Cu2+ and Zn2+ was effective adsorbed onto the AO-Cell within the experimental pH range (1-6) while the adsorption equilibrium could be achieved within 60 min. The kinetics and isotherms analysis showed the chemical adsorption process was controlled by surface reaction and the theoretical adsorption capacity of AO-Cell for Cu2+ and Zn2+ was 84.81 mg/g and 61.46 mg/g, respectively. Regeneration experiment had approved that the AO-Cell could maintain a favorable adsorption capacity after 10 cycles. Density functional theory (DFT) calculations showed that N atoms had relatively higher adsorption activity than that O atoms did in the amidoxime group. Meanwhile, the adsorption ability of all active sites for Cu2+ was greater than that for Zn2+. This result was consistent with the FT-IR and XPS spectra analysis data of the AO-Cell for adsorption. © 2024, The Authors. All rights reserved.

关键词： Density functional theory

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Tuning electrical and optical anisotropy of bilayer black phosphorus quantum dots by the twist angle

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solid state Communications 2025年 404卷

作者： Zhao, Xinyue Chen, Jiayi Lu, Yingfang Wang, Zhen Wu, Zhenhua Li, Xiaojing College of Physics and Energy Fujian Normal University Fuzhou350117 China Laboratory of Solid-State Optoelectronic Information Technology Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China School of Physics Zhejiang University Hangzhou310058 China

Black phosphorus (BP), a unique anisotropic 2D material, offers exceptional potential for optoelectronic applications. Here, we explore the electronic and optical properties of twisted bilayer black phosphorus (TBBP) quantum dots using a tight-binding model across four twist angles in AB-stacking configurations. Our study reveals that the twist angle modulates inter-layer coupling, reducing electron localization and altering band structures. Notably, the anisotropic optical transitions between armchair and zigzag directions converge as the twist angle increases. Additionally, external electric fields enable precise tuning of band gaps and optical spectra. These findings highlight twist-angle engineering as a versatile strategy for tailoring BPs properties, paving the way for advanced photonic and electronic devices. © 2025

关键词： Optical anisotropy

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Two-dimensional zero thermal expansion in low-cost Mn_(x)Fe_(5−x)Si_(3) alloys via integrating crystallographic texture and magneto-volume effect

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science China materials 2022年第7期65卷 1912-1919页

作者： Chengyi Yu Kun Lin Yili Cao Wenjie Li Yan Chen Ke An Chin-Wei Wang Kenichi Kato Qiang Li Jinxia Deng Xianran Xing Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Solid State ChemistryDepartment of Physical ChemistryUniversity of Science and Technology BeijingBeijing 100083 Neutron Scattering Division Oak Ridge National LaboratoryOak RidgeTN 37831 Neutron Group National Synchrotron Radiation Research CenterHsinchu 30076 RIKEN SPring-8 Center Hyogo 679-5148

Zero thermal expansion(ZTE)alloys have unique aspects in the application of the engineering of precise dimensional ***,the harsh conditions to realize ZTE,i.e.,appropriate coupling among spin,lattice,and charge upon heating,have limited the ZTE alloys by very few numbers of *** this work,we report a route to achieving twodimensional(2D)ZTE behavior by regulating crystallographic texture and magneto-volume effects(MVEs)in volumetric positive thermal expansion *** is illustrated in a series of Mn_(x)Fe_(5-x)Si_(3)compounds by those earth-abundant *** a result,a 2D ZTE performance with a coefficient of thermal expansion α_(1)=0.45×10^(-7)K^(-1) over a broad temperature window of 10–310 K was observed in *** experimental results by synchrotron X-ray diffraction,neutron diffraction,microscopy,and magnetization measurements reveal that such a ZTE behavior is strongly coupled with fiber crystallographic texture and magnetic moment at the crystallographic 6g site that dominates MVEs in the a-b *** competition between ferromagnetic Fe_(4d)–Fe_(6g)(J_(FM))and antiferromagnetic Mn_(4d)–Mn_(6g)(J_(AFM))interactions makes the Mn_(1.5)Fe_(3.5)Si_(3) and Mn_(2)Fe_(3)Si_(3)compounds show mixed magnetism and negative thermal expansion(NTE).The integral approach presented here can be used to extend the scope of ZTE/NTE species in other magnetic or ferroelectric materials.

关键词： zero thermal expansion crystallographic texture microstructure magneto-volume effect

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Electrically controllable topological magnetism in multiferroic antiferromagnetic PbVO3

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Physical Review B 2024年第6期109卷 L060402-L060402页

作者： Yonglong Ga Dongxing Yu Yong Li Jiawei Jiang Liming Wang Peng Li Jinghua Liang Hai Feng Youguo Shi Hongxin Yang Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China National Laboratory of Solid State Microstructures School of Physics Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University Lanzhou 730000 China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 China Center for Quantum Matter and Device Applications School of Physics Zhejiang University Hangzhou 31008 China

We propose to realize the nonvolatile four-state antiferromagnetic (AFM) skyrmions in multiferroic oxide system with underlying asymmetry. Subsequently, through strain-mediated magnetic phase engineering, we find that AFM skyrmions can be obtained in bulk PbVO3. Moreover, we also explore possible existence of AFM skyrmions in the SrTiO3/PbVO3 (PbTiO3/PbVO3) heterostructures via ab initio calculations, where AFM skyrmions can still survive. Eventually, we realize four-state AFM skyrmions (P↑,L↓), (P↑,L↑), (P↓,L↓), and (P↓,L↑) with different chirality induced by polarization (P) switching and polarity arising from magnetization (L) reversal in multiferroic PbVO3. In this letter, we provide an avenue toward electric-field control of AFM skyrmions in multiferroic oxides and offer perspectives for designing AFM skyrmion-based spintronic devices.

关键词： Antiferroelectricity Dzyaloshinskii-Moriya interaction Skyrmions Multiferroics

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Elucidating electrochemical intercalation mechanisms of biomass-derived hard carbon in sodium-/potassium-ion batteries

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Carbon Energy 2021年第4期3卷 541-553页

作者： Ziyi Zhu Wentao Zhong Yanjia Zhang Peng Dong Shigang Sun Yingjie Zhang Xue Li National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Fabrication Technology Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingYunnanChina School of Environment and Energy South China University of TechnologyGuangzhouGuangdongChina Department of Chemistry and Life Science Yokohama National UniversityYokohamaKanagawaJapan State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenFujianChina

Hard carbon materials are characterized by having rich resources,simple processing technology,and low cost,and they are promising as one of the anode electrodes for commercial applications of sodium-/potassium-ion ***,exploring the alkali metal ion storage mechanism is particularly important for designing high-performance electrode ***,the structure of hard carbon is more complex,and the description of energy storage behavior is quite *** this study,the Magnolia grandiflora Lima leaf is used as a precursor,combined with simple pyrolysis and impurity removal processes,to obtain biomass-derived hard carbon material(carbonized Magnolia grandiflora Lima leaf[CMGL]).When it is used as an anode for sodium-ion batteries,it exhibits a high specific capacity of 315mAh/g,and the capacity retention rate is 90.0%after 100 *** potassium-ion batteries,the charge specific capacity is 263.5mAh/g,with a capacity retention rate of 85.5%at the same ***,different electrochemical analysis methods and microstructure characterization techniques were used to further elucidate the sodium/potassium storage mechanism of the *** the results indicate that the high potential slope region represents the adsorption/desorption characteristics on the surface active sites,whereas the low-potential quasiplateau region belongs to the ion insertion/extraction in the graphitic microcrystallites *** is noteworthy that potassium ion is randomly intercalated between the graphitic microcrystallite layer without forming a segmented intercalation compound structure.

关键词： biomass energy storage mechanisms hard carbon potassium-ion batteries sodium-ion batteries

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