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Erratum to:Tertiary orientation structures enhance the piezoelectricity of MXene/PVDF nanocomposite

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Nano Research 2024年第6期17卷 5761-5761页

In the first page of the original version of this paper,the Received date should be“10 October 2023”instead of“10 October 2013”.

关键词： Tertiary orientation MXene

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生物医学工程跨学科综合实验教学实践

实验科学与技术 2024年第4期22卷 34-40页

作者：常向荣周杰邓维礼西南交通大学医学院成都610031 西南交通大学材料科学与工程学院成都610031

结合生物医学工程专业多学科交叉特点,探讨了通过综合实验教学设计进行融会贯通教学。在实验组织上采用“项目式”实验,在实验内容上实现多元化综合设计。以“导电水凝胶材料在柔性电子及人体中的应用”为主题,设计了导电水凝胶制备、... 详细信息

结合生物医学工程专业多学科交叉特点,探讨了通过综合实验教学设计进行融会贯通教学。在实验组织上采用“项目式”实验,在实验内容上实现多元化综合设计。以“导电水凝胶材料在柔性电子及人体中的应用”为主题,设计了导电水凝胶制备、材料性能表征、柔性电极体表电信号检测及基于Python生理信号分析系列综合实验,构建了“医用材料+”实践教学。实验安排跳出章节内容实验设定的局限性,体现了生物医学工程学科的融合交叉,有效拓展了专业教学的深度和广度。

关键词：生物医学工程综合实验教学导电水凝胶材料信号处理

Solidification structure of eutectic Al-Si alloy under a high magnetic field-aid-electromagnetic vibration

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Acta Metallurgica Sinica(English Letters) 2009年第3期22卷 191-196页

作者： Jianbo YU Zhongming REN weili REN Kang deng Yunbo ZHONG Department of Materials Science and Engineering Shanghai University Shanghai 200072 China

An electromagnetic vibration was generated by simultaneously imposing a strong static magnetic field （up to 10 T） and an alternative electricity current to the metal. Its effects on the solidification structure of eutectic Al-Si alloy have been investigated experimentally. It is found that the eutectic structure has been refined by solely imposing high magnetic field while it is coarsened under the electromagnetic vibration. Furthermore, polyhedral Si grains and non-dendritic α-Al appeared when the electromagnetic vibration strength was strong enough. The refining of eutectic structure is attributed to the decrease of diffusion coefficient caused by the strong magnetic field. The coarseness of eutectic structure may be attributed to the convection caused by electromagnetic vibration. Strong convection may break co-operative growth of eutectic phases to form polyhedral Si grains and non-dendritic α-Al.

关键词： Strong magnetic field Electromagnetic vibration Eutectic solidification Polyhedral Si Al-Si alloy

Effects of electromagnetic vibration on the structure and mechanical properties of Al-6%Si alloy during directional solidification

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Acta Metallurgica Sinica(English Letters) 2009年第1期22卷 35-39页

作者： Jianbo YU Zhongming REN weili REN Kang deng Yunbo ZHONG Department of Materials Science and Engineering Shanghai University Shanghai 200072 China

The effects of electromagnetic vibration on the grain refinement in directional solid- ification were investigated. It was found that the electromagnetic vibration applied in the melt not only can refine grains remarkably but also can enhance both tensile strength and ductility values of Al-6%Si alloy. SEM graphs show that coarse dendrite structure was broken up into a somewhat globular structure, and the morphology of eutectic silicon was changed from flaky to fibrous under electromagnetic vibration treatment. The refine mechanism under electromagnetic vibration was discussed.

关键词： Electromagnetic vibration Grain refinement Directional solidification Mechanical property

MXene based mechanically and electrically enhanced film for triboelectric nanogenerator

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Nano Research 2021年第12期14卷 4833-4840页

作者： Yuyu Gao Guoxu Liu Tianzhao Bu Yaoyao Liu Youchao Qi Yanting Xie Shaohang Xu weili deng Weiqing Yang Chi Zhang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing101400China Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning530004China

The development of triboelectric nanogenerator(TENG)technology which can directly convert ambient mechanical energy into electric energy may affect areas from green energy harvesting to emerging wearing ***,the material of triboelectric layer is critical to the mechanical robustness and electrical output characteristics of the ***,a MXene enhanced electret polytetrafluoroethylene(PTFE)film with a high mechanical property and surface charge density is *** MXene/PTFE composite film was synthesized by spraying and annealing *** the doping of MXene,the crystallinity of composite film could be tuned,leading to an enhancement in the tensile property of 450%and reducing the wear volume about 80%in the friction ***,the as-fabricated TENG with this composite film outputs 397 V of open-circuit voltage,21µA of short-circuit current,and 232 nC of transfer charge quantity,which are 4,6,and 6 times higher than that of the TENG made by pure PTFE film,***,this work provides a creative strategy to simultaneously improve the mechanical property and electrical performance of the TENGs,which have great potential in improving device stability under a complex mechanical environment.

关键词： MXene polytetrafluoroethylene(PTFE) mechanically and electrically enhanced triboelectric layer triboelectric nanogenerator

Gradient CNT/PVDF piezoelectric composite with enhanced force-electric coupling for soccer training

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Nano Research 2023年第8期16卷 11312-11319页

作者： Wanghong Zeng weili deng Tao Yang Shenglong Wang Yue Sun Jieling Zhang Xiarong Ren Long Jin Lihua Tang Weiqing Yang Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Department of Mechanical and Mechatronics Engineering University of AucklandAuckland 1010New Zealand Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

Real-time monitoring of ball–shoe interactions can provide essential information for high-quality instruction in personalized soccer training,yet existing monitoring systems struggle to reflect specific forces,loci,and durations of ***,we design a self-powered piezoelectric sensor constructed by the gradient carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite to monitor the interactions between the ball and the ***-dimensional Raman mapping demonstrates the gradient structure of CNT/PVDF prepared by programmable electrospinning combined with a hot *** from the synergistic effect of local polarization caused by the enrichment of CNT and the reduced diffusion of silver patterns in gradient structure,the as-prepared composite exhibits enhanced force-electric coupling with an excellent sensitivity of 80 mV/N and durability over 15,000 *** this basis,we conformally attach a 3×3 sensor array to a soccer shoe,enabling real-time acquisition of kick position and contact force,which could provide quantitative assessment and personalize guidance for the training of soccer *** self-powered piezoelectric sensor network system offers a promising paradigm for wearable monitoring under strong impact forces.

关键词： mechanical and electrical performance pressure sensor carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite soccer training

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亚麻籽水溶蛋白与姜黄素复合物的制备与表征

中国食品添加剂 2024年第10期35卷 56-63页

作者：邓伟莉武淑芬李超杨本旭王昌禄天津科技大学食品科学与工程学院天津300457 食品生物技术教育部工程研究中心天津300457 天津食品集团有限公司天津300074 天津利达食品科技有限公司天津300393

以分级提取的亚麻籽水溶蛋白(water-soluble flaxseed protein,FPW)和姜黄素(curcumin,Cur)为原料,制备FPW与Cur的复合物(FPW-Cur),测得每mg FPW可负载0.778μg Cur,复合物溶解后姜黄素溶解度达到36200μg/L,相较于Cur在水溶液中的溶解度(11μg/L)提高了约3291倍。考察了FPW、Cur和FPW-Cur对DPPH、ABTS^(+)·和·O-_(2)自由基清除能力,结果表明复合物的抗氧化活性能力高于单独的FPW和单独的Cur,但低于二者抗氧化活性之和。对FPW红外光谱进行二阶导数分析,结果表明FPW-Cur的α-螺旋、β-折叠和β-转角较FPW分别从15.84%增加到17.46%、从20.47%增加到30.62%和从32.02%增加到36.30%。紫外-可见光谱表征分析表明FPW-Cur位于208 nm附近的吸收峰强度逐渐降低,并发生明显红移,证明FPW与Cur之间存在相互作用。该研究为蛋白质基脂溶性功能分子的载运提供新方法,也为提高亚麻籽蛋白及其水溶蛋白的开发应用价值开辟新途径。

关键词：亚麻籽水溶蛋白姜黄素复合物

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Body-area sensor network featuring micropyramids for sports healthcare

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Nano Research 2023年第1期16卷 1330-1337页

作者： Shenglong Wang weili deng Tao Yang Guo Tian Da Xiong Xiao Xiao Hongrui Zhang Yue Sun Yong Ao Junfeng Huang Jun Chen Weiqing Yang Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiao tong UniversityChengdu 610031China Department of Bioengineering University of CaliforniaLos AngelesLos AngelesCA 90095USA

Monitoring physiological signals of the human body can provide extremely important information for sports healthcare,preventing injuries and providing efficient guidance for individual ***,the signals related to human healthcare involve both subtle and vigorous signals,making it difficult for a sensor to satisfy the full-scale monitoring at the same ***,a novel conductive elastomer featuring homogeneously micropyramid-structured PDMS/CNT composite is used to fabricate highperformance piezoresistive sensors by a drop-casting *** from the significant increase in the contact area of microstructure during deformation,the flexible sensor presents a broad detection range(up to 185.5 kPa),fast response/recovery time(44/13 ms),ultrahigh sensitivity(242.4 kPa–1)and excellent durability over 8,000 *** a proof of concept,the as-fabricated pressure sensor can be used for body-area sports healthcare,and enable the detection of full-scale pressure *** the fabulous sensing performance,the sensor may potentially become promising in personal sports healthcare and telemedicine monitoring.

关键词： pressure sensor pyramidal microstructure sports healthcare sensor network broad detection range high sensitivity

From high-yield Ti3AlCN ceramics to high-quality Ti3CNTx MXenes through eliminating Al segregation

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Chinese Chemical Letters 2020年第4期31卷 1044-1048页

作者： Ningjun Chen Haichao Huang Zhong Xu Yanting Xie Da Xiong Xiang Chu Bingni Gu Bo Zheng weili deng Haitao Zhang Weiqing Yang Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Traction Power Southwest Jiaotong UniversityChengdu 610031China

Ti3CNTx MXenes with unique electrical conductivity can be widely applied for supercapacitors and electromagnetic ***,its relatively low-yield quaternary nitrogen-containing Ti3AlCN ce ramics precursor(less than 50%),due to the inevitable Al segregation during the synthesizing process,significantly hindered its widely commercial ***,we employed the controllable AlNoversaturation precursor strategy to precisely tune the phase transition point of quaternary Ti3AlCN ceramics to obtain high-yield Ti3 AlCN precursor for the purpose of high conductivity Ti3 CNTx *** energy dispersive X-ray spectrometer(XRD)with X-ray photoelectron spectroscopy(XPS)characterizations,the yield of the quaternary nitrogen-containing Ti3 AlCN ceramics was evidently proved to be up to 70%,which is 1.4 times than that of previously reported *** relatively highyield quaternary Ti3AlCN is mainly ascribed to the elimination of Al *** on it,we further developed accordion-like two-dimensional(2D)MXene via hydrofluoric acid etch and vacuum *** novel accordion-like 2D Ti3CNTx MXene possesses high electrochemical capacitive properties(209 F/g).Therefore,this controllable AlN-oversaturation precursor strategy will pave a way to exploit costly high-yield MAX ceramics precursor for high conductivity MXenes and also play a powerful role in promoting their practical applications including electrical and magnetic engineering fields.

关键词： Al segregation High-yield Ti3AlCN MAX phase Ti3CNTx MXenes Supercapacitors