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Rational Design of Biological Crystals with Enhanced Physical Properties by Hydrogen Bonding Interactions

Research 2023年第3期2023卷 659-668页

作者： Hui Yuan Bin Xue Dingyi yang Sigal Rencus-Lazar Yi Cao Ehud Gazit Dan Tan rusen yang School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710126China The Shmunis School of Biomedicine and Cancer Research George S.Wise Faculty of Life SciencesDepartment of Materials Science and EngineeringThe Iby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801Israel National Laboratory of Solid State Microstructure Department of PhysicsNanjing UniversityNanjing 210093JiangsuChina

Hydrogen bonds are non-covalent interactions and essential for assembling supermolecules into ordered structures in biological systems,endowing crystals with fascinating physical properties,and inspiring the construction of eco-friendly electromechanical ***,the interplay between hydrogen bonding and the physical properties is not fully understood at the molecular ***,we demonstrate that the physical property of biological crystals with double-layer structures could be enhanced by rationally controlling hydrogen bonding interactions between amino and carboxyl *** hydrogen bonding interactions result in various thermal,mechanical,electronic,and piezoelectric *** particular,the weak interaction between O and H atoms contributes to low mechanical strength that permits important ion displacement under stress,giving rise to a strong piezoelectric *** study not only reveals the correlation between the hydrogen bonding and physical properties in double-layer structures of biological crystals but also demonstrates the potential of these crystals as functional biomaterials for high-performance energy-harvesting *** calculations and experimental verifications in this work provide new insights into the rational design of biomaterials with desirable physical properties for bioelectrical devices by modulating intermolecular interactions.

关键词： bonding rational biomaterials

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Fabric-Based Triboelectric Nanogenerators

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Research 2019年第1期2019卷 123-135页

作者： Jinmei Liu Long Gu Nuanyang Cui Qi Xu Yong Qin rusen yang School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710071China Institute of Nanoscience and Nanotechnology Lanzhou UniversityLanzhou 730000China

In the past decades,the progress of wearable and portable electronics is quite rapid,but the power supply has been a great challenge for their practical *** power sources,especially wearable energy-harvesting devices,provide some possible solutions for this *** various wearable energy harvesters,the high-performance fabric-based triboelectric nanogenerators(TENGs)are particularly *** this review paper,we first introduce the fundamentals of TENGs and their four basic working ***,we will discuss the material synthesis,device design,and fabrication of fabric-based ***,we try to give some problems that need to be solved for the further development of TENGs.

关键词： synthesis wear harvesting

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Piezoelectric Peptide and Metabolite Materials

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Research 2019年第1期2019卷 136-148页

作者： Hui Yuan Peipei Han Kai Tao Shuhai Liu Ehud Gazit rusen yang School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710126China Department of Molecular Microbiology and Biotechnology George S.Wise Faculty of Life SciencesTel Aviv UniversityTel Aviv 6997801Israel

Piezoelectric materials are important for many physical and electronic *** many piezoelectric ceramics exhibit good piezoelectricity,they often show poor compatibility with biological systems that limits their biomedical *** peptide and metabolite materials benefit from their intrinsic biocompatibility,degradability,and convenient biofunctionalization and are promising candidates for biological and medical ***,we provide an account of the recent progress of research works on piezoelectric peptide and metabolite *** review focuses on the growth mechanism of peptide and metabolite micro-and *** influence of self-assembly processes on their piezoelectricity is *** and metabolite materials demonstrate not only outstanding piezoelectric properties but also unique electronic,optical,and physical properties,enabling their applications in nanogenerators,sensors,and optical waveguiding devices.

关键词： materials. piezoelectric convenient

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Giant electrocaloric effect in BiFeO_(3) and La codoped PbZr_(0.7)Ti_(0.3)O_(3) epitaxial thin films in a broad temperature range

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Journal of Materiomics 2022年第1期8卷 156-165页

作者： Miaomiao Zhang Laijun Liu rusen yang Ping Yu Qi Zhang Biaolin Peng Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials Center on Nanoenergy ResearchGuangxi UniversityNanning530004China Guangxi Key Laboratory of Optical and Electronic Materials and Devices Guilin University of TechnologyGuilin541004China School of Advanced Materials and Nanotechnology Xidian UniversityXi'an710126China College of Material Science and Engineering Sichuan UniversityChengdu610064China BCMaterials Basque Centre for MaterialsApplications and NanostructuresUPV/EHU Science Park48940LeioaSpain IKERBASQUE Basque Foundation for SciencePlaza Euskadi5Bilbao48009Spain

Ferroelectric thin/thick films with large electrocaloric(EC)effect are critical for solid state cooling ***,large positive EC effects with two EC peaks in a broad temperature range(~100 K)were obtained in 0.95Pb_(0.92)La_(0.08)(Zr_(0.70)Ti_(0.30))_(0.98)O_(3)-0.05BiFeO_(3)(BFO-La-codoped PZT)epitaxial thin films deposited on the(100),(110)and(111)oriented SrTiO_(3)(STO)substrates by a sol-gel *** thin film deposited on the(111)oriented STO substrate exhibited a stronger EC effect(~20.6 K at 1956 kV/cm)near room ***,the thin films deposited on the(100)and(110)oriented STO substrates exhibited a stronger EC effect(~18.8 K at 1852 kV/cm and~20.8 K at 1230 kV/cm,respectively)around the peak of the dielectric permittivity(T_(m),~375 K).Particularly,as the direction of the applied electric field was switched(E<0),the DT of the(100)-oriented thin films around T_(m) was enhanced significantly from 18.8 K to 38.1 *** self-induced-poling during the preparing process maybe plays a key role on the magic *** can be concluded that the BFO-La-codoped PZT epitaxial thin films are promising candidates for application in the next solid-state cooling devices.

关键词： Sol-gel Epitaxial thin film Electrocaloric effect Self-induce-poled

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Constructing metal-free heterophotocatalyst using two-dimensional carbon nitride sheets and violet phosphorene for highly efficient visible-light photocatalysis

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Journal of Materials Science & Technology 2023年第15期146卷 113-120页

作者： Yong Wang Chengxin Zeng Liting Wu Yalin Dong Yu Zhang Dingyi yang Wen Hu Jian Hao Hongzhe Pan rusen yang Academy of Advanced Interdisciplinary Research School of Advanced Materials and NanotechnologyXidian UniversityXi’an 710126China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China School of Physics and Electronic Engineering Linyi UniversityLinyi 276005China

Two-dimensional(2D)carbon nitride sheets(CNs)with nanoscale thickness have great potential in solar energy conversion owing to their intrinsic ***,their photocatalytic efficiency falls far below the practical requirements because the generated electron-hole pairs rapidly *** construct a metal-free 2D p–n junction heterophotocatalyst from CNs and violet phosphorene(VP)using a simple electrostatic self-assembly *** experimental results and density functional theory calculations show that the built-in electric field of the p–n junction promotes photogenerated carrier transport at the heterojunction interface,thereby promoting the separation of photogenerated electron-hole *** visible-light illumination,the visible-light photocatalytic hydrogen and CO production rates of the CNs/VP heterojunction were increased by 5.85 and 1.51 times,respectively,when compared to that of *** study provides new insights into the design of metal-free heterogeneous photocatalysts with high catalytic activity。

关键词： Heterostructures DFT calculations Visible-light photocatalysis

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Designable heteronanocrystals via interface redox reaction

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Nano Research 2023年第4期16卷 5946-5952页

作者： Zhihua Li yang Li Nannan Luo Yuanyuan Qie Dingyi yang Guowei Cao Yuxiang Liu Ying Fu Na Li Wen Hu Min Zhang rusen yang Bo Tang College of Chemistry Chemical Engineering and Materials ScienceKey Laboratory of Molecular and Nano ProbesMinistry of EducationCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Molecular and Nano ScienceShandong Normal UniversityJinan 250014China School of Advanced Materials and Nanotechnology Xidian UniversityXi'an 710126China

The synergistic interaction of different components in heteronanocrystals induces interfacial phenomena and novel ***,effective technologies to design and fabricate heteronanocrystals with materials on demand are still *** heterostructures in a copper patina are known to form at room temperature and under atmospheric *** redox process of copper tarnish inspired the discovery of a simple strategy to achieve heteronanocrystals that contained elements from group 3-11 and group *** interface redox-induced method is self-regulating at ambient conditions and applicable for metal,semiconductor,and dielectric *** enhanced interface bonding endows the heteronanocrystals with outstanding stability and catalytic performance,while the modular approach enables the design and fabrication of heteronanocrystals with intended materials to meet different purposes.

关键词： heteronanocrystals interface redox-induced synthesis modular approach

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Introducing Spin Polarization into Mixed-Dimensional Van der Waals Heterostructures for High-Efficiency Visible-Light Photocatalysis

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Energy & Environmental Materials 2023年第5期6卷 192-200页

作者： Yong Wang Wei Xu Yu Zhang Chengxin Zeng Weining Zhang Lin Fu Mei Sun Yizhang Wu Jian Hao Wei Zhong Youwei Du rusen yang Academy of Advanced Interdisciplinary Research School of Advanced Materials and NanotechnologyXidian UniversityXi'an 710126China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for NanotechnologyNanjing UniversityNanjing 210093China Department of Physics Shaanxi University of Science and TechnologyXi'an 710021China Department of Physics State Key Laboratory of Surface PhysicsFudan UniversityShanghai 200433China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China

The low separation efficiency of the photogenerated carrier and the poor activity of the surface redox reaction are the main barrier to further improvement of photocatalytic *** address these issues,introducing spin-polarized electrons in single-component photocatalytic materials emerged as a promising ***,the decreased redox ability of photocarriers in these materials becomes a new ***,we mitigate this challenge with a carbon nitride sheet(CNs)/graphene nanoribbon(GNR)composite material that has a van der Waals heterostructures(vdWHs)and spin-polarized electron *** results and theoretical calculations show that the heterostructure has a strong redox ability,high carrier-separation efficiency,and enhanced surface catalytic ***,the mixed-dimensional CNs/GNR vdWHs exhibit remarkable performance for H_(2)and O_(2)generation as well as CO_(2)production under visible-light irradiation without any *** spin-polarized vdWHs discovered in this study revealed a new type of photocatalytic materials and advanced the development of spintronics and photocatalysis.

关键词： DFT calculations spin polarization Van der Waals heterostructures visible-light photocatalysis

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miR-135a/b靶向SIRT1调控葡萄膜黑色素瘤细胞的迁移

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中华眼视光学与视觉科学杂志 2023年第2期25卷 88-95页

作者：林永杨汝森叶菊秀陈晓燕温州医科大学附属眼视光医院眼视光学和视觉科学国家重点实验室温州325027

目的:研究microRNA-135a/b(miR-135a/b)对葡萄膜黑色素瘤(UM)细胞迁移能力的调控作用及其机制。方法:实验研究。采用定量RT-PCR检测UM标本和癌旁组织中miR-135a/b的表达水平。将miRNA模拟物转染入UM细胞(M23和SP6.5)过表达miR-135a/b,... 详细信息

目的:研究microRNA-135a/b(miR-135a/b)对葡萄膜黑色素瘤(UM)细胞迁移能力的调控作用及其机制。方法:实验研究。采用定量RT-PCR检测UM标本和癌旁组织中miR-135a/b的表达水平。将miRNA模拟物转染入UM细胞(M23和SP6.5)过表达miR-135a/b,转染无义序列作为对照组(NC)。利用小RNA干扰技术和慢病毒过表达载体感染技术分别下调和上调细胞中SIRT1蛋白表达水平,分别以无义小干扰RNA(siNC)和插入无义序列的慢病毒载体(Lv-NC)作为阴性对照。采用划痕实验和Transwell实验检测细胞的迁移能力。双萤光素酶报告实验用于鉴定miR-135a/b的靶基因。Western blot检测SIRT1蛋白的表达水平。采用独立样本t检验进行数据分析。结果:定量RT-PCR结果显示miR-135a/b在UM组织较癌旁组织的表达水平明显下调(miR-135a:t=6.38,P=0.003;miR-135b:t=23.26,P<0.001)。划痕实验和Transwell实验结果显示,与NC组相比,miR-135a/b过表达M23和SP6.5细胞迁移距离减小(miR-135a:t=36.01、8.98,均P<0.01;miR-135b:t=27.53、10.51,均P<0.01)且迁移细胞数量减少(miR-135a:t=7.04、7.02,均P<0.01;miR-135b:t=5.01、7.32,均P<0.01)。双萤光素酶实验证实,miR-135a/b能够明显抑制SIRT1野生组萤光素酶的荧光值(miR-135a:t=2.88,P=0.028;miR-135b:t=4.99,P=0.003);Western blot结果表明,与NC组相比,过表达miR-135a/b的M23和SP6.5细胞中SIRT1的蛋白水平下调(miR-135a:t=9.93、4.13,均P<0.01;miR-135b:t=4.66、6.20,均P<0.01)。siSIRT1转染后划痕实验和Transwell实验结果显示,与siRNC组相比,M23和SP6.5细胞中下调SIRT1蛋白水平后细胞的迁移距离减小(siSIRT1-I:t=13.88、11.78,均P<0.01;siSIRT1-II:t=31.20、6.27,均P<0.01)且迁移细胞数量减少(siSIRT1-I:t=7.57、4.66,均P<0.01;siSIRT1-II:t=5.58、3.25,均P<0.05)。M23和SP6.5细胞中上调SIRT1蛋白水平同时过表达miR-135a/b,Transwell实验结果显示,细胞的迁移数量较仅过表达miR-135a/b升高(miR-135a+Lv-SIRT1:t=4.10、2.75,均P<0.05;miR-135b+Lv-SIRT1:t=2.99、2.49,均P<0.05)。结论:miR-135a/b在UM中明显下调且通过靶向结合SIRT1 mRNA 3'非翻译区抑制UM细胞的迁移,提示miR-135a/b-SIRT1信号轴在UM发展中发挥重要作用。

关键词：葡萄膜恶性黑色素瘤 microRNA-135a microRNA-135b SIRT1 细胞迁移

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涂层材料长时间气动加热实验研究

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宇航材料工艺 2007年第4期37卷 70-72页

作者：张友华刘德英杨汝森杨国铭刘燕松航天空气动力技术研究院北京100074

分两个方面介绍了涂层材料低热流长时间气动加热试验情况。先对涂层材料进行试验筛选,再将性能较好的涂层材料制作成大尺度球锥模型,考核其整体热结构性能及粘接工艺。该试验研究利用了湍流导管试验技术,并将传统的用于高热流、短时间... 详细信息

分两个方面介绍了涂层材料低热流长时间气动加热试验情况。先对涂层材料进行试验筛选,再将性能较好的涂层材料制作成大尺度球锥模型,考核其整体热结构性能及粘接工艺。该试验研究利用了湍流导管试验技术,并将传统的用于高热流、短时间运行的亚声速电弧包罩试验技术拓展到低热流、长时间加热领域,成功进行了小尺度平板模型和大尺度球锥模型的长时间气动加热试验,试验时间达600 s,试验过程中流场参数稳定。试验结果表明,筛选出的涂层材料整体热结构性能及粘接工艺较好。

关键词：涂层材料长时间气动加热湍流导管亚声速电弧包罩

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CD146在视网膜血管内皮细胞中的功能和机制

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中华眼视光学与视觉科学杂志 2023年第5期25卷 332-339页

作者：林永杨汝森闫东升陈晓燕吕帆温州医科大学眼视光学院生物医学工程学院温州325027

目的:研究黑色素瘤细胞黏附分子(CD146)在视网膜血管内皮细胞中的功能及机制。方法:实验研究。于2021年1—6月构建氧诱导视网膜病变模型(OIR)小鼠16只作为实验组,以同日龄正常饲养小鼠16只作为对照组。采用免疫磁珠法分离视网膜血管内... 详细信息

目的:研究黑色素瘤细胞黏附分子(CD146)在视网膜血管内皮细胞中的功能及机制。方法:实验研究。于2021年1—6月构建氧诱导视网膜病变模型(OIR)小鼠16只作为实验组,以同日龄正常饲养小鼠16只作为对照组。采用免疫磁珠法分离视网膜血管内皮细胞;定量PCR分别检测2组小鼠mRNA的表达水平;免疫荧光染色检测小鼠视网膜上CD146的定位和表达。取人视网膜微血管内皮细胞(HRMEC)在1%O2环境中培养,Western blot检测HRMEC细胞和小鼠视网膜中CD146的蛋白表达水平。CD146小干扰RNA(siCD146)转染HRMEC作为siCD146转染组,无义小干扰RNA转染作为转染对照组(NC)。采用细胞活力测定实验(MTS)、细胞增殖实验(EDU)、流式细胞术分别检测siCD146转染组和NC细胞活力、细胞增殖和细胞周期;Transwell和划痕实验检测HRMEC的迁移能力;血管生成实验检测HRMEC的血管形成能力。OIR小鼠右眼玻璃体腔注射siCD146作为siCD146注射组,左眼注射无义小干扰RNA作为阴性注射对照组(NC),采用血管免疫荧光染色观察注射后OIR小鼠眼底新生血管的情况。采用独立样本t检验进行实验数据分析。结果:免疫荧光染色显示,CD146在小鼠视网膜血管上特异性表达。OIR小鼠视网膜血管内皮细胞中CD146 mRNA表达水平是正常小鼠的2倍(t=6.57,P=0.003)。与21%O2处理相比,1%O2处理的HRMEC中CD146蛋白表达升高(t=5.79,P=0.010)。与NC组细胞相比,siCD146转染组细胞迁移和血管生成能力均受到明显抑制(Transwell:siCD146-1:t=6.15,P=0.003;siCD146-2:t=3.88,P=0.005。划痕:siCD146-1:t=2.73,P=0.041;siCD146-2:t=4.10,P=0.006。血管生成:siCD146-1:t=2.81,P=0.048;siCD146-2:t=3.10,P=0.036)。Western blot结果显示:与NC相比,siCD146转染组的Ras同源家族成员A(RHOA)(siCD146-1:t=3.60,P=0.023;siCD146-2:t=4.12,P=0.015)、磷酸化p38蛋白(siCD146-1:t=2.89,P=0.044;siCD146-2:t=3.07,P=0.038)表达均下调。视网膜铺片结果显示:与NC相比,siCD146注射组小鼠视网膜上的新生血管、无血管区面积均减少(t=8.94,P=0.001;t=11.24,P=0.001)。视网膜Western blot结果显示:相较于NC,siCD146注射组中CD146(t=5.62,P=0.030)、磷酸化p38蛋白(t=6.87,P=0.021)、RHOA(t=5.06,P=0.037)表达均下调。结论:敲减CD146可以通过下调p38和RHOA的表达从而抑制视网膜血管内皮细胞的迁移和血管生成。

关键词：视网膜黑色素瘤细胞黏附分子视网膜血管内皮细胞新生血管细胞迁移

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