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SSRN 2025年

作者： Tong, Junfeng Li, Daoyou Jiang, Xuefeng Du, Xingchi Wang, Yan Liang, Zezhou Yang, Chunyan Gansu Province Organic Semiconductor Materials and Technology Research Centre School of Materials Science and Engineering Lanzhou Jiaotong University Lanzhou730070 China Engineering Research Center of Advanced Ferroelectric Functional Materials College of Chemistry and Chemical Engineering Baoji University of Arts and Sciences Key Laboratory of Phytochemistry of Shaanxi Province Baoji721013 China Key Laboratory for Physical Electronics and Devices the Ministry of Education Shaanxi Key Lab of Information Photonic Technique School of Electronics and Information Engineering Xi′an Jiaotong University Xi′an710049 China

The investigation of asymmetric central core linked perylene diimide (PDI) dimeric acceptors was still insufficient. For this end, the conjugation extended core 6-(thieno[3,2-b]- thiophene-2-yl)benzo[b]thiophene (TT-BTh) was synthesized, and two asymmetric PDI dimers, namely, T-BTh-(PDI-HD)2 and TT-BTh-(PDI-HD)2, with 6-(thien-2-yl)benzo[b]thiophene (T-BTh) and TT-BTh as central linkages and two imide-position 2-hexyldecyl substituted PDI-HD units as double flanks, were developed to search into the role of different conjugation length. When the central asymmetric linker was extended from T-BTh to TT-BTh, the decreased thermo-stability, the weaken absorption, the enhanced film state molecular stacking, the better solution state photo-stability, a slightly deepened ELUMO and significantly decreased dihedral angle from 87.70° to 27.05° between two PDI-HD sub-planes were observed. Consequently, extending the conjugation length from T-BTh to TT-BTh suffered from a 0.03 V reduced VOC from 0.81 V to 0.78 V, a 26.59% reduced JSC from 7.56 mA cm‒2 to 5.55 mA cm‒2 but a 10.65% increased FF from 47.33% to 52.37%, resulting in the 21.53% decreased PCE from 2.88% to 2.26%. The decrease was mainly due to the slightly deepened ELUMO, the weakened absorption, the decreased electron mobility originating from the deteriorated miscibility and coarser surface morphology. Interestingly enough, the asymmetric T-BTh-(PDI-HD)2 afforded the 0.02⁓0.03 V increased VOC, 2.07%⁓10.58% elevated FF and thus 11.63%⁓58.24% elevated PCE in comparison with symmetric core analogues T-(PDI-HD)2 and 2T-(PDI-HD)2. This finding indicated that constructing asymmetric T-BTh linking core was an efficient method for adjusting the molecular geometry, optoelectronic property and thus improving the photovoltaic efficiency, however it should be cautious to further prolong the conjugation length of the central linker during these asymmetric PDI dimeric acceptors. © 2025, The Authors. All rights reserved.

关键词： Thiophene

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Dynamical behaviors for analyzing the stability of glycolysis model using fractal–fractional derivative

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Partial Differential Equations in Applied Mathematics 2025年 14卷

作者： Sabarinathan, S. Sivashankar, M. Nisar, Kottakkaran Sooppy Alsaeed, Suliman Ravichandran, C. Department of Mathematics College of Engineering and Technology SRM Institute of Science and Technology Tamil Nadu Kattankulthur 603 203 India Department of Mathematics College of Science and Humanities in Alkharj Prince Sattam Bin Abdulaziz University Alkharj 11942 Saudi Arabia Hourani Center for Applied Scientific Research Al-Ahliyya Amman University Jordan Mathematics Department College of Sciences Umm Al-Qura University Makkah Saudi Arabia Department of Mathematics Kongunadu Arts and Science College Tamil Nadu Coimbatore 641 029 India

One very useful tool for simulating the intricate feedback processes that take place in a biological system is the glycolysis model. The nonlinearity, stiffness, and parameter sensitivity of this system make it difficult to accurately predict its behavior. This article focuses on the stability analysis of fractal–fractional derivatives for glycolysis modeling of the biochemical system. The primary objective is to examine the criteria for existence and uniqueness using the fixed-point technique. The study explores the Hyers–Ulam stability results and discusses other significant findings for the proposed model, and also employs numerical schemes using the Lagrange interpolation polynomial method. Finally, simulated graphical representations for various fractal–fractional order values are generated, and the simulation results confirm the effectiveness and practical applicability of the theoretical findings. © 2025 The Authors

关键词： Biochemical system Existence and uniqueness theory Glycolysis model Hyers–Ulam stability Lagrange interpolation polynomial

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Phase Transformations Induced by Thermo Hydrogen Treatment in Ti-(15 at.%)Fe/Cr Alloys

SSRN

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SSRN 2024年

作者： Wang, Qian Weng, Hanbo Zhang, Tong Huang, Sensen Qi, Min Ma, Yingjie Schuman, Christophe Lecomte, Jean-Sébastien Xu, Daokui Lei, Jiafeng Yang, Rui Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China School of Materials Science and Engineering University of Science and Technology of China Shenyang110016 China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China Université de Lorraine CNRS Arts et Métiers ParisTech Metz57073 France University of Lorraine 57073 France Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China

The phase transformations induced by thermo hydrogen treatment is investigated in Ti-15 at.% Fe and Ti-15 at.% Cr alloys. The effect of hydrogen content on the fraction of TiFe and TiCr2 phases is characterized. The orientation relationships (ORs) between the secondary phases and β matrix changing with the increased hydrogen content are determined by electron backscatter diffraction. Amount of twins are observed inside TiCr2 precipitations. Three types of TiCr2 twin pairs are divided. The formation mechanism and preference of TiCr2 twin pairs are investigated by coordinate transformation matrices. The FCC layer formed at secondary phase interface from β phase during water quenching are found in both Ti-15 at.% Fe and Ti-15 at.% Cr alloys. The diffusionless BCC-FCC transformation is found in Ti alloy. The ORs are determined as N-W’ and K-S relations. The phase transformation mechanisms are clarified. The nominal strain contributes mostly to the N-W’ transformation and the shear strains are dominant to K-S transformation. Twinning is activated to accommodate the lattice distortion inside FCC layer. The twin variant selection is analyzed by displacement gradient accommodation. This work can provide significant suggestions for the performance optimization of Ti alloy through thermo hydrogen treatment. © 2024, The Authors. All rights reserved.

关键词： Titanium alloys

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Retraction Note: Comparison of the effect of Cr3+ substituted Co–Cu and Cu–Co nano ferrites on structural, magnetic, DC electrical resistivity, and dielectric properties

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Journal of Materials Science: Materials in Electronics 2025年第13期36卷 1-2页

作者： Suryanarayana, B. Varma, P. V. S. K. Phanidhar Shanmukhi, P. S. V. Kiran, M. Gnana Murali, N. Mammo, Tulu Wegayehu Raghavendra, Vemuri Parajuli, D. Batoo, Khalid Mujasam Hussain, Sajjad Department of Physics Raghu Engineering College (A) Visakhapatnam India Department of Physics Sanketika Institute of Technology and Management Visakhapatnam India Department of Physics Aditya College of Engineering and Technology Surampalem India Department of Physics Koneru Lakshmaiah Education Foundation Vaddeswaram India Department of Engineering Physics AUCE (A) Andhra University Visakhapatnam India Department of Physics School of Sciences & Humanities SR University Warangal India Department of Physics CNCS Aksum University Tigrai Ethiopia Department of Physics Sri Venkateswara College New Delhi India Research Center for Applied Science and Technology Tribhuvan University Kirtipur Nepal College of Science King Saud University Riyadh Saudi Arabia Hybrid Materials Center (HMC) Sejong University Seoul Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong University Seoul Republic of Korea

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Magnetic ground state dependent magnetostriction effects on the chiral magnet CrNb3S6

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Physical Review B 2023年第5期107卷 054427-054427页

作者： Masaki Mito Takayuki Tajiri Yusuke Kousaka Jun Akimitsu Jun-ichiro Kishine Katsuya Inoue Graduate School of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan Chirality Research Center Hiroshima University Higashihiroshima 739-8526 Japan Faculty of Science Fukuoka University Fukuoka 814-0180 Japan Graduate School of Engineering Osaka Metropolitan University Sakai 599-8570 Japan Research Institute for Interdisciplinary Science Okayama University Okayama 700-8530 Japan Graduate School of Arts and Sciences The Open University of Japan Chiba 261-8586 Japan Graduate School of Science Hiroshima University Higashihiroshima 739-8526 Japan Institute for Advanced Materials Research Hiroshima University Higashihiroshima 739-8526 Japan

A prototype of the monoaxial chiral magnet CrNb3S6 exhibited two magnetostriction (MS) effects: (1) spontaneous MS due to the exchange interaction and spin-orbit coupling (SOC) at zero dc magnetic field (H) [Phys. Rev. B 102, 014446 (2020)] and (2) paramagnetic MS due to SOC and Zeeman energy at room temperature [Phys. Rev. B 105, 104412 (2022)]. CrNb3S6 has various magnetic structures, such as helimagnetic, first chiral soliton lattice (CSL-1), second CSL (CSL-2), CSL-2 with irreversibility, and forced ferromagnetic phases, resulting from the Dzyaloshinskii–Moriya interaction as a function of H below the magnetic ordering temperature (Tc). In this study, we conducted powder x-ray diffraction analyses to investigate the effects of H and temperature (T) on the MS at the atomic level. The T dependence of the lattice constants reveals that below Tc, the MS depends on the magnetic structure. The MS below Tc is discussed in this study in terms of both the hybridization between the z2 orbital of Nb(4f) and delocalized a1 orbital of Cr and the structural symmetry of the CrS6 octahedron.

关键词： Magnetic texture Magnetostriction Spin-orbit coupling Topological materials Chiral magnets X-ray powder diffraction

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Realizing room-temperature ferromagnetism in metal-free graphene through vacancy-assisted hydrogenation

Chain

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Chain 2025年第1期2卷 72-80页

作者： Yongjie Xu Dingyi Yang Yu Zhang Gongkai Yuan Yici Zou Zhibo Zhang Yong Wang Yizhang Wu School of Education Jiangsu Open UniversityNanjing 210036China National Laboratory of Solid-State Microstructures Collaborative Innovation Center of Advanced Microstructuresand Jiangsu Provincial Key Laboratory for NanotechnologyNanjing UniversityNanjing 210093China Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory School of MicroelectronicsAcademy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Department of Applied Physical Sciences The University of North Carolina at Chapel HillChapel HillNC 27514USA Graduate School of Arts and Sciences Georgetown UniversityWashingtonDC 20057USA Department of Computer science and Engineering Michigan State UniversityEast LansingMI 48824USA Institute of Materials Engineering Nanjing UniversityNantong 226019China

Room-temperature ferromagnetism in graphene is a crucial step toward the practical application of spintronic *** hydrogen adsorption on graphene has been shown to induce magnetic moments,the overall efficiency remains low due to the clustering of hydrogen atoms and weak magnetic *** study demonstrates a highly effective vacancy-assisted hydrogenation method to synthesize hydrogenated graphene(HG)with robust room-temperature *** introduction of vacancies inhibits hydrogen clustering,increases magnetic edge atoms,and enhances the coupling between magnetic *** a result,HG exhibits a Curie temperature of 540 K and a saturation magnetization of 0.69 emu/g at 300 *** findings provide a new approach for the efficient hydrogenation of graphene,paving the way for its applications in spintronic devices.

关键词： graphene ferromagnetic hydrogenation vacancy-assisted room-temperature

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Design, Simulation and Measurement of Metapocket: An All-textile Reflective Metasurface for On-body Smartphone Radiation Improvement

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IEEE Transactions on Consumer Electronics 2025年

作者： Zhai, Menglin Tian, Wandai Pei, Rui Xu, Chen Leach, Mark Lim, Eng Gee Wang, Zhao Wang, Jingchen Hua, Qiang Akinsolu, Mobayode Liu, Bo Huang, Yi the College of information science and technology Donghua University Shanghai201620 China Engineering Research Center of Digitized Textile and Fashion Technology Ministry of Education Shanghai China the School of Advanced Technology Xi’an Jiaotong Liverpool University Suzhou215123 China vivo mobile Communication Co. Ltd. China Department of Engineering and Technology School of Computing and Engineering University of Huddersfield HuddersfieldHD1 3DH United Kingdom the Faculty of Arts Science and Technology Wrexham University WrexhamLL11 2AW United Kingdom the James Watt School of Engineering University of Glasgow GlasgowG12 8LU United Kingdom the Department of Electrical Engineering and Electronics University of Liverpool LiverpoolL69 3BX United Kingdom

A polarization-independent all-textile reflective metasurface – the metapocket, is presented in this paper. This design aims at enhancing gain, and radiation efficiency and reducing the Specific Absorption Rate (SAR) of a smartphone antenna when it is placed inside a jacket pocket close to the human body. During the design process, the state-of-the-art smartphone structure, the impact of varying unit cell numbers on reflectivity and the nature of textile materials have been taken into consideration. Also, an AI-driven antenna design algorithm is employed. Full wave simulations with a voxel human body model and real measurement with smartphone vivo iQOO validate the effectiveness of the metapocket. The effect of applying the metapocket is quantified with an anechoic chamber radiation pattern measurement and a reverberation chamber radiation efficiency measurement. Results reveal a 3.17 dB realized gain increase, 34.37% radiation efficiency improvement, and a more than 85% SAR reduction are achieved in the on-body scenario. The proposed design has a high potential for improving smartphone communication with various Internet of Things (IoT) and wearable devices. © 2025 IEEE. All rights reserved,

关键词： Reverberation

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BG-GAN: Generative AI Enable Representing Brain Structure-Function Connections for Alzheimer’s Disease

arXiv

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arXiv 2023年

作者： Zhou, Tong Ding, Chen Jing, Changhong Liu, Feng Hung, Kevin Pham, Hieu Mahmud, Mufti Lyu, Zhihan Qiao, Sibo Wang, Shuqiang Tsang, Kim-Fung The Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China University of Chinese Academy of Sciences Beijing100864 China The Department of Systems and Enterprises Stevens Institute of Technology United States School of Science and Technology Hong Kong Metropolitan University Hong Kong College of Engineering and Computer Science VinUni-Illinois Smart Health Center VinUniversity Viet Nam Department of Information and Computer Science SDAIA-KFUPM Joint Research Center for AI Interdisciplinary Research Center for Biosystems and Machines King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia Department of Game Design Faculty of Arts Uppsala University Sweden The School of Software Tiangong University Tianjin300387 China

The relationship between brain structure and function is critical for revealing the pathogenesis of brain disorders, including Alzheimer’s disease (AD). However, mapping brain structure to function connections is a very challenging task. In this work, a bidirectional graph generative adversarial network (BG-GAN) is proposed to represent brain structure-function connections. Specifically, by designing a module incorporating inner graph convolution network (InnerGCN), the generators of BG-GAN can employ features of direct and indirect brain regions to learn the mapping function between the structural domain and the functional domain. Besides, a new module named Balancer is designed to counterpoise the optimization between generators and discriminators. By introducing the Balancer into BG-GAN, both the structural generator and functional generator can not only alleviate the issue of mode collapse but also learn complementarity of structural and functional features. Experimental results using Alzheimer’s Disease Neuroimaging Initiative (ADNI) dataset show that both generated structure and function connections can improve the identification accuracy of AD. The experimental findings suggest that the relationship between brain structure and function is not a complete one-to-one correspondence. They also suggest that brain structure is the basis of brain function, and the strong structural connections are majorly accompanied by strong functional connections. Copyright © 2023, The Authors. All rights reserved.

关键词： Neurodegenerative diseases

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A Novel AU Nanoparticles/Reduced Graphene Oxide/Chitosan Nanocomposite as a Sensitive, Selective Electrochemical Sensor for Paracetamol Detection

SSRN

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SSRN 2023年

作者： Rahman, M. Hafizur Rashed, Md.A. Nayem, N.I. Rahaman, M. Abdur Ahmed, Jahir Faisal, M. Jalalah, Mohammed Harraz, Farid A. Department of Chemistry Faculty of Science Mawlana Bhashani Science and Technology University Tangail Santosh1902 Bangladesh Advanced Materials and Nano-Research Centre Najran University Najran11001 Saudi Arabia Department of Chemistry Faculty of Science and Arts Najran University Najran11001 Saudi Arabia Scientific and Engineering Research Center Najran University Najran11001 Saudi Arabia Department of Electrical Engineering College of Engineering Najran University Najran11001 Saudi Arabia Department of Chemistry Faculty of Science and Arts at Sharurah Najran University Sharurah68342 Saudi Arabia

In this study, a novel electrocatalyst designed by doping gold nanoparticles (AuNPs) over the reduced graphene oxide (rGO)/Chitosan (CTSN) matrix for the determination of paracetamol in phosphate buffer solution has been reported. The catalyst was synthesized performing simple ultra-sonication process after that a photo-reduction technique to obtain 1%AuNPs@5%rGO/CTSN nanocomposite. The conductivity of the CTSN biopolymer was enhanced by adding rGO in it and thereafter rGO/CTSN surface was decorated with AuNPs to improve the catalytic efficiency. The structural and surface properties of the as-fabricated nanocomposite have been thoroughly investigated using cutting–edge microscopic and spectroscopic techniques. In addition, catalytic and sensing phenomena were systematically studied with several well-known electrochemical techniques. Through the use of differential pulse voltammetry (DPV), the peak current was found to be linear across the PAR concentration range of 0.50 µM to 39.31 µM, with a high sensitivity and limit of detection (LOD) of 2.923 µAµM-1cm-2 and 0.06 µM, respectively. Moreover, under optimal experimental conditions, the amperometric (i-t) study also showed high sensitivity value of 1.16 µA µM-1cm-2, a wide PAR detection range (5.0 µM to 160 µM), and LOD is 0.151 µM. The proposed sensor also demonstrated high selectivity even with the existence of common interfering species. In addition, this novel sensor electrode exhibited admirable reproducibility, repeatability, and remarkable storage and operational stability. It also successfully applied to paracetamol recovery test in real samples as pharmaceuticals formulation. © 2023, The Authors. All rights reserved.

关键词： Nanocomposites

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Pioneering bone regeneration: A review of cutting-edge scaffolds in tissue engineering

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Bioprinting 2024年 43卷

作者： Alex, Y. Vincent, Sumi Divakaran, Nidhin Uthappa, U.T. Srinivasan, Parthasarathy Mubarak, Suhail Al-Harthi, Mamdouh Ahmed Dhamodharan, Duraisami School for Advanced Research in Petrochemicals: Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology (CIPET) Bhubaneswar 751024 India Mechanical Engineering Program Physical Sciences and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Mechanics of Composites for Energy and Mobility Laboratory King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518055 China Department of Electronics and Communication Engineering Amrita School of Engineering Amrita Vishwa Vidyapeetham Tamil Nadu Chennai 601103 India Research Institute of Humanities and Social Sciences University of Sharjah Sharjah 27272 United Arab Emirates Interdisciplinary Research Center for Refining and Advanced Chemicals King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Department of Chemical Engineering King Fahd University of Petroleum & Minerals Dhahran Saudi Arabia

Bone tissue engineering (BTE) is aims to develop advanced strategies to regenerate damaged or diseased bone, through the integration of principles from cellular biology, biomaterials science, and engineering. The vital aspect of these studies includes the design and fabrication of scaffolds that support cell adhesion, proliferation, and differentiation, ultimately promoting the formation of new bone tissue. Recent developments in scaffold materials have focused on organic, inorganic, and composite biomaterials. Each of these showcasing unique and distinct advantages in terms of biocompatibility, biodegradability, and mechanical strength. Polymers, such as poly (lactic-co-glycolic acid) (PLGA), provide flexibility and degradation profiles, which are conducive to tissue integration. While ceramics, including hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), offer mechanical properties similar to native bone. The fusion of organic and inorganic components in composites has yielded scaffolds with enhanced functionality, such as improved osteo-conductivity and controlled degradation rates. advanced fabrication techniques, particularly electrospinning and 3D printing, have revolutionized scaffold design by enabling precise control over pore size, porosity, and surface architecture, critical parameters for mimicking the extracellular matrix (ECM) of bone. These structural characteristics directly influence cellular behaviors such as migration, proliferation, and differentiation, which are crucial for successful bone regeneration. This review critically evaluates the recent advances in biomaterials for scaffold fabrication, with a focus on optimizing the interplay between material properties and scaffold architecture to improve therapeutic outcomes in bone regeneration. The findings underscore the importance of material selection and scaffold design in BTE and provide actionable insights for both researchers and clinicians in the development of next-generation scaffol

关键词： Biomaterials Bone scaffold design Ideal scaffold Polymer Scaffold Tissue engineering

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