检索结果-内蒙古大学图书馆

Highly efficient acousto-optic modulation using nonsuspended thin-fil1m lithium niobate-chalcogenide hybrid waveguides

引用

Light(Science & Applications) 2022年第6期11卷 1285-1295页

作者： Lei Wan Zhiqiang Yang Wenfeng Zhou Meixun Wen Tianhua Feng Siqing Zeng Dong Liu Huan Li Jingshun Ppan Ning Zhu Weiping Liu Zhaohui Li Department of Electronic Engineering College of Information Science and TechnologyJinan University510632 GuangzhouChina Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University510275 GuangzhouChina State Key Laboratory for Modern Optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang Campus310058 HangzhouChina Institute of Semiconductor Science and Technology Guangdong Engineering Technology Research Center of Low Carbon and New Energy MaterialsSouth China Normal University510631 GuangzhouChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) 519000 ZhuhaiChina

A highly efficient on-chip acousto-optic modulator is as a key component and occupies an exceptional position in microwave-to-optical *** thin-film lithium niobate is preferentially employed to build the suspended configuration for the acoustic resonant cavity,with the aim of improving the modulation efficiency of the ***,the limited cavity length and complex fabrication recipe of the suspended prototype restrain further breakthroughs in modulation efficiency and impose challenges for waveguide *** this work,based on a nonsuspended thin-film lithium niobate-chalcogenide glass hybrid Mach-Zehnder interferometer waveguide platform,we propose and demonstrate a built-in push-pull acousto-optic modulator with a half-wave-voltage-length product VnL as low as 0.03 V cm that presents a modulation efficiency comparable to that of a state-of-the-art suspended counterpart.A microwave modulation link is demonstrated using our developed built-in push-pull acousto-optic modulator,which has the advantage of low power *** nontrivial acousto-optic modulation performance benefits from the superior photoelastic property of the chalcogenide membrane and the completely bidirectional participation of the antisymmetric Rayleigh surface acoustic wave mode excited by the impedance-matched interdigital transducer,overcoming the issue of low modulation efficiency induced by the incoordinate energy attenuation of acoustic waves applied to the Mach-Zehnder interferometer with two arms in traditional push-pull acousto-optic modulators.

关键词： modulator waveguide interferometer

来源：评论

学校读者我要写书评

暂无评论

Design and therapeutic application of sodium alginate-based hydrogel with biodegradability and catalytic activity

引用

Science China(Technological Sciences) 2020年第11期63卷 2403-2412页

作者： LI JinFeng ZHAO JiuLong CHEN YongKang ZHENG YuTing ZHOU LingLing ZHAO JiaYan LIU YiYun LIU XiuYing WANG ShiGe College of Science University of Shanghai for Science and TechnologyShanghai 200093China Department of Gastroenterology Changhai HospitalThe Second Military Medical UniversityShanghai 222300China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430073China

How to efficiently treat cancer in a minimally invasive manner has become one of the major focuses of recent developments in *** this research,biodegradable sodium alginate(SA)hydrogel encapsulated with NaHCO_(3)and glucose oxidase(GOX)was synthesized using Fe^(3+)as the crosslinker for the tumor chemodynamic therapy(CDT)and starvation therapy(ST).Material safety assessments revealed that this hydrogel possesses good in vitro and in vivo *** tumor microenvrionment(TME),the Fe^(3+)further reacted with the intracellular glutathione and was transformed into Fe^(2+),which triggered the Fenton reaction with the H_(2)O_(2)within TME and produced abundant highly toxic·OH(hydroxyl radicals)for efficient tumor ***,the GOXcatalyzed the enzymolysis of glucose to consume the nutrient of the tumor and enhance the H_(2)O_(2)level in ***,the CO_(2)bubbles that were generated from the decomposing of NaHCO_(3)promoted the contact between glucose and *** in this research would have important implications for the present status of tumor therapy.

关键词： sodium alginate hydrogel starvation therapy chemical dynamic therapy

来源：评论

学校读者我要写书评

暂无评论

Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

引用

Journal of Materiomics 2021年第4期7卷 683-692页

作者： Qinghu Guo Fei Li Fangquan Xia Pengbin Wang Xiaoyi Gao Hua Hao Hanxing Liu Huajun Sun Shujun Zhang State Key Laboratory Silicate Materials for Architectures Center for Smart Materials and Device IntegrationSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical Engineering University of JinanJinan250022China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNew South Wales2500Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other,i.e.,higher piezoelectricity,lower Curie temperature,thus,limits their applications over broad temperature *** this research,Sm-modified 0.15 Pb(Mg_(1/3)Nb_(2/3))O_(3)-(0.85-x)PbZrO_(3)-xPbTiO_(3) ceramics have been studied,where excellent piezoelectric coefficients d33¼720 pC/N,d_(33)*=950 pm/V and high Curie temperature T_(C)=293℃ were simultaneously achieved for x=0.42 composition by designing the morphotropic phase boundary(MPB)with local structural *** particular significance is that a high thermal stability was observed with piezoelectric variation below 20%with temperature up to 280℃,demonstrating that the x=0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is *** work provides a good paradigm for designing highperformance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.

关键词： Piezoelectric ceramics Local structural heterogeneity Electromechanical response Thermal stability

来源：评论

学校读者我要写书评

暂无评论

电场可逆调控二维单层氧化物磁电性能研究

引用

Science Bulletin 2023年第15期68卷 1632-1639,M0004页

作者：王国鹏胡涛熊奕敏刘学沈胜春王建林车梦倩崔璋璋张莹莹杨鲁懿李正操陆亚林田明亮 School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230601China Hefei National Laboratory Hefei 230028China Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Department of Physics University of Science and Technology of ChinaHefei 230026China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Anhui Laboratory of Advanced Photon Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China State Key Laboratory for New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

具有原子层厚度的氧化物磁性材料拥有将二维磁性应用到下一代自旋电子学新兴领域的巨大潜力,引起了研究者的广泛关注.因此,实现二维单层氧化物磁、电性能的磁场和电场调控,为未来低功耗自旋电子器件提供了广阔应用前景.然而,电场调控二... 详细信息

具有原子层厚度的氧化物磁性材料拥有将二维磁性应用到下一代自旋电子学新兴领域的巨大潜力,引起了研究者的广泛关注.因此,实现二维单层氧化物磁、电性能的磁场和电场调控,为未来低功耗自旋电子器件提供了广阔应用前景.然而,电场调控二维单层氧化物磁性报道很少.本工作利用离子液体门电压进行质子掺杂,实现了对二维单层氧化物(SrRuO_(3))_(1)/(SrTiO_(3))_(N)(N=1,3)磁、电性能的电场可逆调控.随着质子掺杂浓度提高,在(SrRuO_(3))_(1)/(SrTiO_(3))_(1)中观察到了从铁磁金属到反铁磁绝缘态相变,并伴随着磁各向异性的转变.理论分析表明,质子掺杂引起的能带结构改变是结构和磁、电性能相变的主要原因.同时,SrTiO_(3)层起到质子筛作用,在质子的演化过程中扮演重要角色.该研究通过电场调控二维单层氧化物的结构和物性,为实现材料的多功能性提供了重要思路,同时也为实现低功耗功能器件提供了应用潜力.

关键词： Electric-field control 2D oxide monolayer magnets Magnetic transition Proton sieve

来源：评论

学校读者我要写书评

暂无评论

Construction of sunlight-resistant color and process control of meta-aramid fiber 14

Construction of sunlight-resistant color and process control...

引用

14th textile Bioengineering and Informatics Symposium, TBIS 2021

作者： Xia, Hong-Hui Chen, Xin Sheng, Dan Wang, Yun-Li Li, Rui-Qing Cao, Gen-Yang State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Hubei Wuhan430200 China School of Textile and Clothing Jiangnan University Jiangsu Wuxi214122 China CTES Research Institute Jiangsu Suzhou215000 China

To increase the color fastness to sunlight of dyed meta-aramid, meta-aramid fabrics are dyed with vat dyes with excellent color fastness to sunlight. Optimization was achieved through conducting the suspension dyeing method and the leuco-acids dyeing method. The effects of dye concentration, thiourea dioxide concentration, reduction temperature, dyeing temperature and dyeing time on dyeing performance were studied. The dyeing process is as follows: vat dye 60 g/L, thiourea dioxide 5 g/L, reduction was carried out at 60°C, followed by dyeing at 130°C for 60 minutes. The results show that vat dyeing can deal with the issue of poor color fastness to sunlight of meta-aramid fiber, and leuco-acid dyeing with vat dyes can improve meta-aramid fiber color fastness to sunlight, up to 3-4. © 2019 textile Bioengineering and Informatics Symposium Proceedings 2021 - 14th textile Bioengineering and Informatics Symposium, TBIS 2021. All rights reserved.

关键词： Dyeing

来源：评论

学校读者我要写书评

暂无评论

Unveiling the Synergistic Effect of Two-Dimensional Heterostructure Nifep@Feooh as Stable Electrocatalyst for Oxygen Evolution Reaction

SSRN

引用

SSRN 2024年

作者： Jiang, Zhigang Chen, Mengtian Hou, Qinglong Wang, Chen Yang, Shuhan Liu, Haizhen Zhu, Lei Cheng, Honghui Wang, Kuikui Xing, Bo Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Shandong Qingdao266071 China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China National Engineering Laboratory of Circular Economy Sichuan University of Science and Engineering Sichuan Zigong643000 China School of Mechanical Engineering Yangzhou University Jiangsu Yangzhou225127 China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University Jiangsu Changzhou213164 China Sichuan University China

Introducing multiple active sites and constructing heterostructure are efficient strategies to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam are equipped by hydrothermal-phosphorization-electrodeposition process. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on the NF increased the specific surface region, bimetallic phosphide realized rapid charge transfer, improved the electron transfer rate. The introduction of FeOOH and the construction of heterostructure realized the synergistic effect among the components, and the surface active sites are abundant. In situ Raman spectroscopy showed that the excellent oxygen evolution reaction (OER) performance was due to the reconstruction-induced hydroxyl oxide, which achieved a multi-active site reaction. The NiFeP@FeOOH/NF electrocatalytic activity is significantly improved. The findings indicate that in 1.0 M KOH alkaline solution, NiFeP@FeOOH/NF showed an OER overpotential of 235 mV at 100 mA cm-2, a Tafel slope of 46.46 mV dec-1 and worked stably at 50 mA cm-2 for 80 h. This research proves the importance of constructing heterostructure and introducing FeOOH are of great significance to the study of the properties of OER electrocatalysts. © 2024, The Authors. All rights reserved.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

A novel coral-like garnet for high-performance PEO-based all solid-state batteries

引用

Science China materials 2022年第2期65卷 364-372页

作者： Jun Cheng Guangmei Hou Qing Sun Qiong Chen Deping Li Jianwei Li Zhen Zeng Kaikai Li Qunhui Yuan Jiajun Wang Lijie Ci State Key Laboratory of Advanced Welding and Joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Research Center for Carbon Nanomaterials Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education)School of Materials Science and EngineeringShandong UniversityJinan 250061China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

As one of the most promising next-generation energy storage devices,the lithium-metal battery has been extensively ***,safety issues and undesired lithium dendrite growth hinder its *** application of solid-state electrolytes has attracted increasing attention as they can solve safety issues and show great potential to inhibit the growth of lithium *** oxide(PEO)-based electrolytes are very promising due to their enhanced safety and excellent ***,they suffer from low ionic conductivity at room temperature and cannot effectively inhibit lithium dendrites at high temperatures due to the intrinsic semicrystalline properties and poor mechanical *** this work,a novel coral-like Li_(6.25)Al_(0.25)La_(3)Zr_(2)O_(12)(C-LALZO)is synthesized to serve as an active ceramic filler in *** PEO with LALZO coral(PLC)exhibits increased ionic conductivity and mechanical strength,which leads to uniform deposition/stripping of lithium *** Li symmetric cells with PLC do not cause a short circuit after cycling for 1500 h at 60℃.The assembled LiFePO_(4)/PLC/Li batteries display excellent cycling stability at both 60 and 50℃.This work reveals that the electrochemical properties of the composite electrolyte can be effectively improved by tuning the microstructure of the filler,such as the C-LALZO architecture.

关键词： coral-like garnet composite solid-state electrolyte all-solid-state battery

来源：评论

学校读者我要写书评

暂无评论

富羟基PtNi纳米粒子作为海水中电化学析氢反应的高效催化剂（英文）

引用

Science China materials 2025年

作者：赵文英杨雄肖宇轩余菲田歌沈凌卢毅耿伟吴思明应杰 Ion Tiginyanu Kenneth I. Ozoemena 阳晓宇 State Key Laboratory of Silicate Materials for Architectures & State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Chemistry Chemical Engineering and Life Sciences & Laoshan Laboratory & School of Materials Science and Engineering & International School of Materials Science and Engineering Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-sen University National Center for Materials Study and Testing Technical University of Moldova Molecular Sciences Institute School of Chemistry University of the Witwatersrand National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Cl-吸附及腐蚀效应是Pt基催化剂在海水析氢反应（HER）中性能的主要障碍.虽然引入羟基是提升HER动力学和缓解氯毒化的有效策略,但在Pt基催化剂体系中实现这一策略仍具挑战性.本研究通过高温还原法制备了具有Ni空位（路易斯酸位点）的PtN...

Cl-吸附及腐蚀效应是Pt基催化剂在海水析氢反应（HER）中性能的主要障碍.虽然引入羟基是提升HER动力学和缓解氯毒化的有效策略,但在Pt基催化剂体系中实现这一策略仍具挑战性.本研究通过高温还原法制备了具有Ni空位（路易斯酸位点）的PtNi合金纳米颗粒.路易斯酸位点促进Ni-LDH载体上晶格羟基向表面羟基的转化.Ni-LDH的晶格羟基通过与路易斯酸位点相互作用,产生表面羟基并协同提升其表面亲水性.这种双功能特性既能促进水分子吸附,又可抑制Cl-吸附.优化后的PtNi/Ni-LDH在碱性真实海水中展现出优异的HER性能,仅需1 9 mV过电位即可达到1 0 mA cm-2电流密度,塔菲尔斜率为31 mV dec-1,并在100小时耐久性测试中具有优异的稳定性.该研究为通过定向羟基工程设计高效海水裂解催化剂提供了理论基础.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Formation mechanism of basin-like depression defect in electric upsetting process of Ni80A superalloy

引用

Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3276-3290页

作者： Guo-zheng QUAN Xue SHENG Kun YANG Yan-ze YU Wei XIONG Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing College of Materials Science and EngineeringChongqing UniversityChongqing 400044China State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China Nanjing Jiepin Intelligent Technology Co. Ltd.Nanjing 210000China Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Collaborative Innovation Center of Advanced Nuclear Energy TechnologyInstitute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China

A kind of surface instability,basin-like depression defect companied by mixed grain structure at the bottom of large-scale valve during electric upsetting process,would significantly influence the microstructures and mechanical properties of *** order to analyze the forming process of the basin-like depression defect,a finite element model for the electric upsetting process of Ni80A superalloy was developed using multi-field and multi-scale coupling analysis ***,a series of parameters loading path schemes for force and current were designed by varying the initial value,peak value and value level,and their effects on basin-like depression and mixed grain structure were simulated and *** is concluded that the changes of heating speed and pressurization speed result in the different flow velocities between the inner and outer layers of billet,thus exerting the basin-like *** results also indicate that these defects can be optimized through the parameter coordination between force and ***,the validity and reliability of the finite element model were verified by physical experiments in electric upsetting process.

关键词： electric upsetting process defect Ni80A superalloy microstructure evolution mixed grain structure

来源：评论

学校读者我要写书评

暂无评论

Zearalenone Degrading Enzyme Evolution to Increase the Hydrolysis Efficiency Under Acidic Condition by the Rational Design

SSRN

引用

SSRN 2024年

作者： Xing, Xingyue Chen, Xiaowei You, Xihuo Huang, Jie Xue, Dongsheng National "111" Center for Cellular Regulation and Molecular Pharmaceutics Cooperative Innovation Center of Industrial Fermentation Ministry of Education Key Laboratory of Fermentation Engineering Hubei University of Technology Hubei Province Wuhan430068 China School of Bioengineering and Health State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Co. Ltd Qichun 435300 China

Based on the rational design, zearalenone degrading enzyme was evolved to improve the hydrolysis efficiency under acidic condition. At pH 4.2 and 37 °C, the activity of the evolved zearalenone degrading enzyme with 8 mutation sites increased to 38.67 U/mg from the original l7.69 U/mg. Km of the evolved zearalenone degrading enzyme decreased to 75.33 µM from the original 283.61 µM. Hydrolysis efficiency of the evolved zearalenone degrading enzyme increased to 3.86 folds under imitated pig stomach condition. Molecular docking showed that the number of hydrogen bonds and pi-sigma interactions between the evolved zearalenone degrading enzyme and zearalenone increased. The evolved zearalenone degrading enzyme was valuable for hydrolyzing zearalenone under acidic condition. © 2024, The Authors. All rights reserved.

关键词： Hydrolysis

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：