检索结果-内蒙古大学图书馆

Advanced terahertz-range dopamine detection using a 2D material-based metasurface biosensor

Applied Optics 2025年第16期64卷 4625-4638页

作者： Wekalao, Jacob Elsayed, Hussein A. Bin-Jumah, May Alqhtani, Haifa A. Abukhadra, Mostafa R. Bellucci, Stefano Rajakannu, Amuthakkannan Mehaney, Ahmed Department of Optics and Optical Engineering University of Science and Technology of China 96 Jinzhai Road Hefei230026 China Department of Physics College of Science University of Ha’il P.O. Box 2440 Ha’il Saudi Arabia Department of Biology College of Science Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Materials Technologies and Their Applications Lab Faculty of Science Beni-Suef University Beni Suef City2512 Egypt Applied Science Research Center Applied Science Private University Al-Jandaweel Amman11931 Jordan INFN-Laboratori Nazionali di Frascati Via E. Fermi 54 Frascati00044 Italy Department of Mechanical and Industrial Engineering College of Engineering National University of Science and Technology Muscat Oman Physics Department Faculty of Science Beni-Suef University Beni Suef62512 Egypt

This study presents an innovative terahertz-range dopamine detection sensor utilizing a metasurface architecture incorporating graphene, borophene, and phosphorene. The sensor design features a 2 µm square resonator coated with phosphorene, surrounded by four 1 µm borophene-coated circular resonators on a 16 µm × 16 µm graphene platform. The numerical findings in the present study are essentially investigated based on the fundamentals of the finite element method through COMSOL Multiphysics software. The sensor demonstrates consistent operation across two frequency bands (0.1–0.3 THz and 1.2–1.6 THz), with tuning ranges of 16 and 70 GHz, respectively. Meanwhile, the performance analysis reveals an exceptional sensitivity of 500 GHz/RIU, with a figure of merit of 8.333 and a detection limit of 0.223. Additionally, we have conducted a machine learning optimization using polynomial regression, achieving R2 values exceeding 0.92, to validate the design’s reliability. Therefore, we believe that the proposed sensor offers a practical solution for dopamine detection, combining high sensitivity with fabrication feasibility for potential commercial applications. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Polynomial regression

来源：评论

学校读者我要写书评

暂无评论

Ultrahigh “Relative Energy Density” and Mass Loading of Carbon Cloth Anodes for K-Ion Batteries

引用

CCS Chemistry 2021年第2期3卷 791-799页

作者： Junpeng Xie Jinliang Li Xiaodan Li Hang Lei Wenchen Zhuo Xibo Li Guo Hong Kwun Nam Hui Likun Pan Wenjie Mai Siyuan Laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632 Institute of Applied Physics and Materials Engineering(IAPME) University of Macao.Department of Physics and ChemistryFaculty of Science and TechnologyUniversity of MacaoMacao SAR 999078 Department of Chemistry Jinan UniversityGuangzhou 510632 Shanghai Key Laboratory of Magnetic Resonance School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200062

Mass loading and potential plateau are the two most important issues of potassium(K)-ion batteries(KIBs),but they have long been ignored in previous ***,we report a simple and scalable method to fabricate acidized carbon clothes(A-CC)as high mass loading(13.1 mg cm−2)anode for KIBs,which achieved a reversible areal-specific capacity of 1.81 mAh cm−2 at 0.2 mA cm−***,we have proposed the concept of“relative energy density”to reasonably evaluate the electrochemical performance of the *** to our calculation method,the A-CC electrode exhibited an ultrahigh relative energy density of 46 Wh m−2 in the initial charge process and remained at 40 Wh m−2 after 50 ***,we performed the operando Raman spectroscopy(ORS)to investigate the K-ion storage *** believe that our work might provide a new guideline for the evaluation of anode performance,thereby,opening an avenue for the development of commercial anode.

关键词： acidized carbon clothes relative energy density high mass loading operando Raman spectra,K-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Effect of Dy2O3 on the phase formation and electrical properties of Tl-1223 HTS

引用

Fizika Nizkikh Temperatur 2025年第1期51卷 59-63页

作者： Metskhvarishvili, I.R. Menelaou, Melita Lobzhanidze, T.E. Dgebuadze, G.N. Surmanidze, D.L. Bendeliani, B.G. Gabunia, V.M. Metskhvarishvili, M.R. Jishiashvili, D.A. Ilia Vekua Sukhumi Institute of Physics and Technology Laboratory of Cryogenic Technique and Technologies Georgia Tbilisi0186 Georgia Georgian Technical University Faculty of Informatics and Control Systems Department of Microprocessor and Measurement Systems Tbilisi0175 Georgia Department of Mechanical Engineering and Materials Science and Engineering Cyprus University of Technology Limassol3036 Cyprus Ivane Javakhishvili Tbilisi State University Faculty of Exact and Natural Sciences Department of Chemistry Tbilisi0179 Georgia Petre Melikishvili Institute of Physical and Organic Chemistry the Iv. Javakhishvili Tbilisi State University Tbilisi0186 Georgia "Talga" Institute of Georgian Technical University Tbilisi0186 Georgia V. Chavchanidze Institute of Cybernetics the Georgian Technical University Tbilisi0186 Georgia

TlBa2Ca2Cu3DyxO8+δ superconductor samples (x = 0–0.075) were prepared by a two-step solid-state reaction technique to investigate the impact of Dy2O3 (dysprosium sesquioxide) addition on the formation and the transport properties of the Tl-1223 phase. The samples were analyzed using X-ray powder diffraction, ac susceptibility, and high-harmonics temperature dependence to study the effects of Dy2O3 on phase formation, superconducting transition temperature Tc, and the intergrain critical current density Jc. XRD results revealed that the prepared samples are nearly single-phases Tl-1223 with a tetragonal structure. Tc is not suppressed as Dy content increased, while Jc increased up to x = 0.025, then decreased with a further increase in x. Our findings show that the presence of dysprosium sesquioxide promotes the high-Tc phase and enhances the transport critical current densities. © I. R. Metskhvarishvili, Melita Menelaou, T. E. Lobzhanidze, G. N. Dgebuadze, D. L. Surmanidze, B. G. Bendeliani, V. M. Gabunia, M. R. Metskhvarishvili, and D. A. Jishiashvili, 2025.

关键词： X ray powder diffraction

来源：评论

学校读者我要写书评

暂无评论

Oxygen-Incorporated Lithium-Rich Iron Sulfide Cathodes for Li-Ion Batteries with Boosted Material Stability and Electrochemical Performance

引用

Chemistry of materials 2024年第19期36卷 9370-9379页

作者： Hailemariam, Adane G. Syum, Zeru Mamo, Tadios T. Qorbani, Mohammad Hsing, Cheng-Rong Sabbah, Amr Quadir, Shaham Bayikadi, Khasim S. Wu, Heng-Liang Wei, Ching-Ming Chen, Li-Chyong Chen, Kuei-Hsien Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Sustainable Chemical Science and Technology Taiwan International Graduate Program Academia Sinica Nangang Taipei11529 Taiwan Institute of Chemistry Academia Sinica Nangang Taipei11529 Taiwan Department of Applied Chemistry National Yang-Ming Chiao Tung University Hsinchu30010 Taiwan Department of Chemistry College of Natural Science Dire Dawa University Dire Dawa1362 Ethiopia Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan Department of Chemistry National Taiwan University Taipei10617 Taiwan Institute of Physics Academia Sinica Taipei11529 Taiwan Nano Science and Technology Taiwan International Graduate Program Academia Sinica Nangang Taipei11529 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei10617 Taiwan Division of Natural Science Center for General Education Chang Gung University Taoyuan City33302 Taiwan Tabbin Institute for Metallurgical Studies Tabbin Helwan 109 Cairo11421 Egypt GoldenCO80401 United States Department of Chemistry Northwestern University EvanstonIL60208 United States National Synchrotron Radiation Research Center Hsinchu30092 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan

Affordable and environmentally friendly electrode materials with multielectron redox reactions are imperative for the advancement of next-generation Li-ion batteries. In this context, the Li-rich layered iron sulfide cathode material (i.e., Li2FeS2) stands out as a promising candidate due to its unique multielectron cationic and anionic redox features. However, its practical application is hampered by inherent limitations in terms of poor structural stability and cycling performance. Herein, we conduct a systematic investigation into the impact of anionic substitution, where sulfur is partially replaced with oxygen, on the structural stability, intrinsic conductivity, and electrochemical properties of the Li2FeS2 cathode. First-principle calculations confirm that an optimum amount of oxygen incorporation is beneficial to stabilize the crystal structure and improve Li ion diffusion. Furthermore, cathodes with oxygen incorporation exhibit significant structural stability even when exposed to air for 24 h, demonstrating resistance against moisture. The Li2FeS1.8O0.2 cathode achieves a higher Coulombic efficiency of ∼100%, charge-discharge capacity of 310 mA h g-1 after 100 cycles, and a remarkable capacity recovery of around 94% following rate capability tests spanning 75 cycles. These findings introduce an innovative anion substitution approach for the development of Li-rich layered sulfide cathode materials, effectively mitigating structural deterioration. © 2024 American Chemical Society.

关键词： Cathodes

来源：评论

学校读者我要写书评

暂无评论

Multiband Metallic Ground State in Multilayered Nickelates La3Ni2O7 and La4Ni3O10 Probed by 139La-NMR at Ambient Pressure

arXiv

引用

arXiv 2023年

作者： Kakoi, Masataka Oi, Takashi Ohshita, Yujiro Yashima, Mitsuharu Kuroki, Kazuhiko Kato, Takeru Takahashi, Hidefumi Ishiwata, Shintaro Adachi, Yoshinobu Hatada, Naoyuki Uda, Tetsuya Mukuda, Hidekazu Department of Physics Osaka University Osaka Toyonaka560-0043 Japan Graduate School of Engineering Science Osaka University Osaka Toyonaka560-8531 Japan Department of Materials Science and Engineering Kyoto University Kyoto606-8501 Japan

We report a 139La-NMR study of polycrystalline samples of multi(n)-layered nickelates, La3Ni2O7−δ (n = 2) and La4Ni3O10−δ (n = 3), at ambient pressure. Measurements of the nuclear magnetic resonance (NMR) spectra and nuclear spin relaxation rate (1/T1) indicate the emergence of a density wave order with a gap below T∗ ∼ 150 K for La3Ni2O7−δ and ∼ 130 K for La4Ni3O10−δ. The finite value of 1/T1 below T∗ indicates metallic ground states with the remaining density of states at the Fermi level (EF) under the density wave order. These features are attributed to multiple d electron bands with different characteristics. Above T∗, the gradual decrease in 1/T1T upon cooling implies the presence of a band with flat dispersion near EF. From our microscopic probes, we point out that these nickelates (n = 2 and 3) possess similar electronic states despite the difference in the formal valence of the Ni d electron states, which provides a basis for understanding the novel high-Tc superconductivity under high pressures. Copyright © 2023, The Authors. All rights reserved.

关键词： Lanthanum compounds

来源：评论

学校读者我要写书评

暂无评论

Picosecond optical-to-x-ray (Cd,Mg)Te radiation detectors

Picosecond optical-to-x-ray (Cd,Mg)Te radiation detectors

引用

2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Cheng, J. Komissarov, I. Chen, G. Chakraborty, D. Kutcher, S. Chen, H. Trivedi, S. Sobolewski, Roman Materials Science Graduate Program University of Rochester RochesterNY14627 United States Laboratory for Laser Energetics University of Rochester RochesterNY14623 United States Department of Electrical and Computer Engineering University of Rochester RochesterNY14627 United States Brimrose Technology Corp SparksMD21152 United States

We developed a dual optical/x-ray ultrafast photodetector based on in-house grown Cdo * Mg0.03Te single crystals. The detector is characterized by ~200 ps full-width-at-half-maximum, readout-electronics limited photor... 详细信息

ISBN: (纸本)9781957171258

关键词： X ray detectors

来源：评论

学校读者我要写书评

暂无评论

Neuro-Regenerative Behavior of Adipose-Derived Stem Cells in Aligned Collagen I Hydrogels

SSRN

引用

SSRN 2023年

作者： Lewis, Mackenzie David, Gabriel Jacobs, Danielle Woessner, Alan E. Kuczwara, Patrick Kim, Jin-Woo Quinn, Kyle P. Song, Younghye Department of Biomedical Engineering University of Arkansas FayettevilleAR United States Department of Biological & Agricultural Engineering University of Arkansas FayettevilleAR United States Materials Science & Engineering Program University of Arkansas FayettevilleAR United States

Peripheral nerve injuries persist as a major clinical issue facing the US population and can be caused by stretch, laceration, or crush injuries. Small nerve gaps are simple to treat, and the nerve stumps can be reattached with sutures. In longer nerve gaps, traditional treatment options consist of autografts, hollow nerve guidance conduits, and, more recently, manufactured fibrous scaffolds. These manufactured scaffolds often incorporate stem cells, growth factors, and/or extracellular matrix (ECM) proteins to better mimic the native environment but can have issues with homogenous cell distribution or uniformly oriented neurite outgrowth in scaffolds without fibrous alignment. Here, we utilize a custom device to fabricate collagen I hydrogels with aligned fibers and encapsulated adipose-derived mesenchymal stem cells (ASCs) for potential use as a peripheral nerve repair graft. Analysis of these scaffolds in vitro revealed heightened therapeutic secretome from ASCs, ECM deposition, and dorsal root ganglia (DRG) neurite outgrowth along the axis of fiber alignment. Our platform serves as an in vitro testbed platform to assess neuro-regenerative potential of ASCs in aligned collagen fiber scaffolds and may provide guidance on next-generation nerve repair scaffold design. © 2023, The Authors. All rights reserved.

关键词： Collagen

来源：评论

学校读者我要写书评

暂无评论

Room-Temperature Magnetic Skyrmions in Pt/Co/Cu Multilayers

arXiv

引用

arXiv 2023年

作者： Cheng, Shuyu Bagués, Núria Selcu, Camelia M. Freyermuth, Jacob B. Li, Ziling Wang, Binbin Das, Shekhar Hammel, P. Chris Randeria, Mohit McComb, David W. Kawakami, Roland K. Department of Physics The Ohio State University ColumbusOH43210 United States Department of Materials Science and Engineering The Ohio State University ColumbusOH43210 United States

Magnetic skyrmions are promising for next-generation information storage and processing owing to their potential advantages in data storage density, robustness, and energy efficiency. The magnetic multilayers consisting of Pt, Co, and a third metal element X provide an ideal platform to study the skyrmions due to their highly tunable magnetic properties. Here, we report the observation of room-temperature bubble-like Néel skyrmions in epitaxial Pt/Co/Cu multilayers in samples with multidomain states in zero field. The magneto-optic Kerr effect (MOKE) and superconducting quantum interference device (SQUID) magnetometry are applied to investigate the shapes of the hysteresis loops, the magnetic anisotropy, and the saturation magnetization. By tuning the Co thickness and the number of periods, we achieve perpendicular and in-plane magnetized states and multidomain states that are identified by a wasp-waisted hysteresis loop. Skyrmions are directly imaged by magnetic force microscopy (MFM) and Lorentz transmission electron microscopy (LTEM). The development of room-temperature skyrmions in Pt/Co/Cu multilayers may lead to advances in skyrmion-related research and applications. © 2023, CC BY.

关键词： Room temperature

来源：评论

学校读者我要写书评

暂无评论

Efficient electrochemical reduction of CO to C_(2) products on the transition metal and boron co-doped black phosphorene

引用

Chinese Chemical Letters 2022年第4期33卷 2183-2187页

作者： Lingyi Kong Zhe Chen Qinghai Cai Lichang Yin Jingxiang Zhao College of Chemistry and Chemical Engineering and Key Laboratory of Photonic and Electronic Bandgap MaterialsMinistry of EducationHarbin Normal UniversityHarbin 150025China Center of Artificial Photosynthesis for Solar Fuels School of ScienceWestlake UniversityHangzhou 310024China Heilongjiang Province Collaborative Innovation Center of Cold Region Ecological Safety Harbin 150025China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Department of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000China

The synthesis of high-value multi-carbon products through the electrochemical reduction of carbon monoxide(COER) is one of the promising avenues for carbon utilization and energy storage,in which searching for efficient electrocatalysts that exhibit moderate CO intermediate binding strength and low kinetic barrier for C-C coupling is a key ***,by means of comprehensive density functional theory(DFT) computations,we theoretically designed three synergistic coupling catalysts by co-doping transition metal(TM=Fe,Co and Ni) and boron(B) into the two-dimensional black phosphorene(BP),namely TMB@BP for COER to C_(2) *** computations and ab initio molecular dynamics simulations reveal the good stability and high feasibility of these proposed TM-B@BP catalysts for practical applications and future experimental *** interestingly,high-value ethylene(C_(2)H_(4)),ethane(C_(2)H_(6)) and ethanol(C_(2)H_(5)OH) products can be obtained on these three designed electrocatalysts with ultra-small limiting potentials(-0.20~-0.41 V) and low kinetic energy barriers of C-C coupling(0.52~0.91 eV).Meanwhile,the competitive one-carbon(C_(1)) products and hydrogen evolution reaction can also be effectively *** promising activity and selectivity of these three designed electrocatalysts render them ideal candidates for CO electroreduction,thus providing a cost-effective opportunity to achieve a sustainable production of high value C_(2) chemicals and fuels.

关键词： CO reduction Electrocatalysis Multi-carbon products Density functional theory 2D black phosphorene

来源：评论

学校读者我要写书评

暂无评论

Optical Information Hiding Based on Speckle Encoding with Dual-Multiplexing Interferometry

SSRN

引用

SSRN 2024年

作者： Zhu, Yusi Mi, Zhaoke Zhu, Yupeng Ke, Changjun Rong, Lu Shi, Yishi Center for Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Aerospace Information Research Institute Chinese Academy of Sciences 100094 China Department of Physics and Optoelectronics Engineering Faculty of Science Beijing University of Technology Beijing100124 China

Optical hiding schemes based on visual cryptography usually hide secret information in multiple visual keys. However, the traditional visual keys are usually Mosaic patterns, which are easy to attract the attention of attackers, and limit their randomness and security. And each visual key needs a corresponding transport carrier, leading to limited hiding capacity. To solve these problems, this paper proposes an optical information hiding method based on speckle encoding and dual-multiplexing interferometry. This method uses natural speckle with high randomness to partial replace traditional visual keys, realizing the combination application of natural speckle keys and artificial visual keys. The optical properties of wavelength and diffraction distance multiplexing interference can hide multiple visual keys in a single image, which improves the hiding capacity. Simulation and optical experiments show that the proposed method has high security, large hiding capacity, imperceptibility and robustness. © 2024, The Authors. All rights reserved.

关键词： Speckle

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：