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Structural engineered living materials

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Nano Research 2024年第2期17卷 715-733页

作者： Yang Geng zian Jia ling li 635 Prices Fork Road Department of Mechanical EngineeringVirginia Polytechnic Institute and State UniversityBlacksburg VA24061USA

Biological structural materials not only exhibit remarkable mechanical properties but also often embody dynamic characteristics such as environmental responsiveness,autonomy,and self-healing,which are difficult to achieve in conventional engineering *** merging materials science,synthetic biology,and other disciplines,engineered living materials(ELMs)provide a promising solution to combine living organisms with abiotic components,thus facilitating the construction of functional“living”*** natural materials,ELMs possess vitality and hold immense application potential in areas such as medicine,electronics,and construction,captivating increasing research attention *** an emerging branch of ELMs,structural ELMs aim to mimic living biological structural materials by achieving desired mechanical performance while maintaining important“living”*** we summarize the recent progress and provide our perspectives for this emerging research *** first summarize the superiority of structural ELMs by reviewing biological structural materials and biomimetic material design ***,we provide a systematic discussion on the definition and classifications of structural ELMs,their mechanical performance,and physiological ***,we summarize some critical challenges faced by structural ELMs and highlight directions of future *** hope this review article can provide a timely summary of the state of the art and relevant perspectives for future development of structural ELMs.

关键词： structural materials engineered living materials(ELMs) structural ELMs composites mechanical properties

Electrothermal Model Based Remaining Charging Time Prediction of lithium-Ion Batteries against Wide Temperature Range

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Chinese Journal of Mechanical Engineering 2024年第2期37卷 330-339页

作者： Rui Xiong zian Zhao Cheng Chen Xinggang li Weixiang Shen School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China School of Science Computing and Engineering TechnologiesSwinburne University of TechnologyHawthornVIC 3122Australia

Battery remaining charging time(RCT)prediction can facilitate charging management and alleviate mileage anxiety for electric vehicles(EVs).Also,it is of great significance to improve EV users’***,the RCT for a lithiumion battery pack in EVs changes with temperature and other battery *** study proposes an electrothermal model-based method to accurately predict battery ***,a characteristic battery cell is adopted to represent the battery pack,thus an equivalent circuit model(ECM)of the characteristic battery cell is established to describe the electrical behaviors of a battery ***,an equivalent thermal model(ETM)of the battery pack is developed by considering the influence of ambient temperature,thermal management,and battery connectors in the battery pack to calculate the temperature which is then fed back to the ECM to realize electrothermal ***,the RCT prediction method is proposed based on the electrothermal model and validated in the wide temperature range from-20℃to 45℃.The experimental results show that the prediction error of the RCT in the whole temperature range is less than 1.5%.

关键词： Electric vehicles lithium-ion batteries Remaining charging time Electrothermal model

Ultrafast electron microscopy in material science

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Chinese Physics B 2018年第7期27卷 32-43页

作者： Huaixin Yang Shuaishuai Sun Ming Zhang Zhongwen li zian li Peng Xu Huanfang Tian Jianqi li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Collaborative Innovation Center of Quantum Matter Beijing 100084China

Recent advances in the ultrafast transmission electron microscope （UTEM）, with combined spatial and temporal resolutions, have made it possible to directly visualize the atomic, electronic, and magnetic structural dynamics of materials. In this review, we highlight the recent progress of UTEM techniques and their applications to a variety of material systems. It is emphasized that numerous significant ultrafast dynamic issues in material science can be solved by the integration of the pump-probe approach with the well-developed conventional transmission electron microscopy （TEM） techniques. For instance, UTEM diffraction experiments can be performed to investigate photoinduced atomic-scale dynamics, including the chemical reactions, non-equilibrium phase transition/melting, and lattice phonon coupling. UTEM imaging methods are invaluable for studying, in real space, the elementary processes of structural and morphological changes, as well as magnetic-domain evolution in the Lorentz TEM mode, at a high magnification. UTEM electron energy-loss spectroscopic techniques allow the examination of the ultrafast valence states and electronic structure dynamics, while photoinduced near-field electron microscopy extends the capability of the UTEM to the regime of electromagnetic-field imaging with a high real space resolution.

关键词： ultrafast transmission electron microscope (UTEM) structural dynamics electron diffraction ul-trafast imaging

Predesigned covalent organic framework with sulfur coordination: Anchoring Au nanoparticles for sensitive colorimetric detection of Hg(Ⅱ)

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Chinese Chemical Letters 2024年第5期35卷 392-396页

作者： Guorong li Yijing Wu Chao Zhong Yixin Yang zian lin Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350108China

Targeted construction of new covalent organic frameworks(COFs)with specific purposes and rationalities to build colorimetric assay platform for environmental pollutant monitoring have attracted increasing ***,it is still challenging due to lack of available coordination sites inside COFs pores and only a slight bonding ability for anchoring *** this work,a two-dimensional(2D)COFs(termed as Tz-COF)with high crystallinity,excellent chemical stability,and abundant sulfur coordination in its skeletons was synthesized and used for the confined growth of Au *** was found that the Au NPs showed significant dispersibility for the support of *** proposed Tz-COF@Au NPs possessed outstanding Hg^(2+)-activated peroxidase-like activity benefited from physicochemical properties of gold amalgam and synergistic effect between COFs and Au NPs to oxidize chromogenic *** on highly efficient activity and distinctive color evolution,the strategy for detecting Hg^(2+)was developed and successfully applied to determine the content of Hg^(2+)in real environmental *** work manifests that a potential strategy to establish a colorimetric assay platform for environmental pollutant monitoring based on the targeted manufacturing of novel COFs with specific functions.

关键词： Covalent organic frameworks Thiazole Sulfur coordination Au nanoparticles Hg^(2+)-activated peroxidase-like activity

GEOCHEMISTRY AND TECTONIC ENVIRONMENT AND RESERVOIR FORMATION OF MANTLE-DERIVED NATURAL GAS IN THE SONGliAO BASIN, NORTHEASTERN CHINA

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Geotectonica et Metallogenia 2004年第2期28卷 168-182页

作者： li zian GUO Zhanqian BAI Zhenguo liN Ge Key Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhouGD 510640China Exploration & Development Research Institute of Daqing Oilfield Daqing LN 163712China Key Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou GD 510640 China Graduate School of the Chinese Academy of Sciences Beiying 100039China Key Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhouGD 510640China

During several decades of exploration, a number of mantle-derived natural gas pools have been discovered in the vicinities of deep faults in the Songliao Basin, northeastern China. The natural gas in these pools has a δ13C1 value of ?16.50/00 to ?24.20/00, a reversed arrangement in the amount of carbon isotopes in methane and its endogamous products (namely, δ13C1 >δ13C2 >δ13C3 >δ13C4), a 3He/4He value of 1.97 to 2.34×10-6,and an Ar/36Ar value of 1063 to 1949. This indicates a mantle 40 source for the natural gas. The trace elements Cd, In, Te and Re, never found in organic-sourced hydrocarbons, are highly enriched in certain crude oils from the Basin; respectively, concentrations of these elements were found to be 751, 28, 16 and 323 times the average crustal values in China, and this also supports a mantle-derived natural gas origin. The characteristics of mantled-derived magmatic rocks, hydrothermal fluids and gaseous fractions distributed in and near the deep Songliao Basin faults indicate that rifting tectonics is providing the mechanisms for this outgassing of the mantle. Deep extensional (normal) faults provide pathways for upward movement of these materials, and in the Songliao Basin, these deep rift fault zones are associated with reservoir occurrence and cap rock seals, forming good sites for accumulation of mantle-derived natural gas. Furthermore, a layer of low velocity, low density and high conductivity in the deep crust has been identified as a potential reservoir for mantle-derived natural gas.

关键词： mantle-derived natural gas geochemistry rift fault reservoir formation Songliao Basin

Unusual Normal and Superconducting State Properties Observed in Hydrothermal Fe_(1-δ)Se Flakes

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Chinese Physics Letters 2021年第5期38卷 109-113页

作者： Shaobo liu Sheng Ma Zhaosheng Wang Wei Hu zian li Qimei liang Hong Wang Yuhang Zhang Zouyouwei Lu Jie Yuan Kui Jin Jian-Qi li li Pi li Yu Fang Zhou Xiaoli Dong Zhongxian Zhao Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory of the Chinese Academy of SciencesHefei 230031China Key Laboratory for Vacuum Physics University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China

The electronic and superconducting properties of Fe_(1-δ)Se single-crystal flakes grown hydrothermally are studied by the transport measurements under zero and high magnetic fields up to 38.5 *** results contrast sharply with those previously reported for nematically ordered Fe Se by chemical-vapor-transport(CVT)*** signature of the electronic nematicity,but an evident metal-to-nonmetal crossover with increasing temperature,is detected in the normal state of the present hydrothermal ***,a higher superconducting critical temperature T_c of 13.2 K is observed compared to a suppressed T_c of 9 K in the presence of the nematicity in the CVT Fe ***,the upper critical field in the zero-temperature limit is found to be isotropic with respect to the field direction and to reach a higher value of-42 T,which breaks the Pauli limit by a factor of 1.8.

关键词： red CVT Unusual Normal and Superconducting State Properties Observed in Hydrothermal Fe Se Flakes

Biofunctionalisation strategies of material surface and the inspired biological effects for bone repair

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Biosurface and Biotribology 2024年第2期10卷 17-41页

作者： Guowen Duan Dongbiao Chang Chengdong Zhang Siyu li Xinyao liu zian Wang Long Chen Jinsheng li Zhenfan Bai Jie Weng School of life and Engineering Southwest Jiaotong UniversityChengduChina Key Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduChina College of Medicine(Institute of Biomedical Engineering) Southwest Jiaotong UniversityChengduChina

Due to trauma and disease,bone defects endanger the healthy life of human *** present,the gold standard for bone defect repair is still autologous bone transplantation and allogeneic bone ***,its insufficient source,potential disease transmission and immune rejection limit its clinical ***,the development of bone repair materials plays an important role in promoting bone *** the interface between material and tissue,the surface of the material plays an important role in the reaction after implantation,which determines the effectiveness of defect repair *** the development of surface engineering and technology,bone repair materials have developed from biological inertia to biological activity by endowing various biological functions by controlling the composition,topological morphology and structure of the material surface *** inspired biofunctionalisation of material surface includes the capacities of inducing osteogenesis,promoting angiogenesis,antibacterial,immune regulation etc.,as well as integration of postoperative repair and *** authors review the biofunctionalisation of biomaterial surface and the inspired biological effects for bone repair,mainly including physical and chemical properties of material surface to regulate osteogenesis,and functional strategy of bone repair material surface.

关键词： bioactivity biomaterials biosurface bone

Effect of Mn substitution on superconductivity in iron selenide (li, Fe)OHFeSe single crystals

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Chinese Physics B 2018年第7期27卷 492-496页

作者： Yiyuan Mao zian li Huaxue Zhou Mingwei Ma Ke Chai Shunli Ni Shaobo liu Jinpeng Tian Yulong Huang Jie Yuan Kui Jin Xiaoli Dong Fang Zhou Jianqi li ZhongxianZhao Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of ScienceBeijing 100190China University of Chinese Academy of Sciences Beifing 100049China School of Physic Beijing Institute of TechnologyBeijing 100081China

We synthesize a series of Mn substituted （li, Fe）OHFeSe superconductor single crystals via a modified ion-exchange method, with the Mn concentration z （the atomic ratio of Mn：Se） ranging from 0 to 0.07. The distribution homogeneity of the Mn element incorporated into the lattice of （li, Fe）OHFeSe is checked by combined measurements of high-angle- annular-dark-field （HAADF） imaging and electron energy-loss spectroscopy （EELS）. Interestingly, we find that the superconducting transition temperature Tc and unit cell parameter c of the Mn-doped （li, Fe）OHFeSe samples display similar V-shaped evolutions with the increasing dopant concentration z. We propose that, with increasing doping level, the Mn dopant first occupies the tetrahedral sites in the （li, Fe）OH layers before starting to substitute the Fe element in the su- perconducting FeSe layers, which accounts for the V-shaped change in cell parameter c. The observed positive correlation between the Tc and lattice parameter c, regardless of the Mn doping level z, indicates that a larger interlayer separation, or a weaker interlayer coupling, is essential for the high-Tc superconductivity in （li, Fe）OHFeSe. This agrees with our previous observations on powder, single crystal, and film samples of （li, Fe）OHFeSe superconductors.

关键词： FeSe-based superconductors Mn doping effect correlation between superconductivity and interlayer separation

25(OH)D、D-D和FDP对类风湿关节炎活动度的鉴别诊断价值

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检验医学与临床 2024年第2期21卷 161-165页

作者：马继登吕艳锞李子安阿祥仁周健武曹春花周丹程鹏杨博杰青海省人民医院医学检验科青海西宁810007 青海大学青海西宁810001

目的探讨25羟基维生素D[25(OH)D]、D-二聚体(D-D)、纤维蛋白降解产物(FDP)对类风湿关节炎(RA)活动度的鉴别诊断价值。方法选取2022年9月至2023年2月在青海省人民医院就诊的101例活动期RA患者作为RA活动组(RAA组),79例缓解期RA患者作为R... 详细信息

目的探讨25羟基维生素D[25(OH)D]、D-二聚体(D-D)、纤维蛋白降解产物(FDP)对类风湿关节炎(RA)活动度的鉴别诊断价值。方法选取2022年9月至2023年2月在青海省人民医院就诊的101例活动期RA患者作为RA活动组(RAA组),79例缓解期RA患者作为RA缓解组(RAR组),90例其他自身免疫性疾病(OA)患者作为OA组,90例健康体检者作为HC组。检测所有研究对象空腹外周血25(OH)D、D-D、FDP、红细胞沉降率(ESR)、C反应蛋白(CRP)、类风湿因子(RF)水平;采用Spearman相关评价D-D、FDP、抗环瓜氨酸肽抗体、ESR、RF、CRP、28关节活动度评分与25(OH)D的相关性;采用受试者工作特征(ROC)曲线评价各项指标单独及联合检测对RA活动度的鉴别诊断价值。结果RAA组与RAR组、OA组和HC组25(OH)D、D-D、FDP水平比较,差异均有统计学意义(P<0.05),RAR组与HC组25(OH)D水平比较,差异有统计学意义(P<0.05);OA组与HC组D-D和FDP水平比较,差异均有统计学意义(P<0.05)。25(OH)D与7项指标均呈负相关(P<0.05),但相关性均较弱。ROC曲线分析结果显示,当25(OH)D最佳截断值为16.41 U/mL时AUC为0.708,灵敏度为82.2%,特异度为60.8%;当D-D最佳截断值为1.90 U/mL时AUC为0.670,灵敏度为90.1%,特异度为46.8%;当FDP最佳截断值为6.10 U/mL时AUC为0.665,灵敏度为88.1%,特异度为44.3%;ESR、CRP、D-D、FDP与25(OH)D联合检测的AUC为0.959。结论血清25(OH)D、FDP和D-D对RA疾病活动度有一定的鉴别诊断价值。ESR、CRP、D-D、FDP与25(OH)D联合检测时鉴别诊断价值更高。

关键词：类风湿关节炎 25羟基维生素D D-二聚体纤维蛋白降解产物疾病活动度