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Science China Mathematics 2019年第6期62卷 1041-1056页

作者： wentao cao László Székelyhidi Jr. Institut für Mathematik Universit?t Leipzig

In this short note we revisit the convex integration approach to constructing very weak solutions to the 2D Monge-Ampére equation with H?lder-continuous ?rst derivatives of exponent β < 1/5. Our approach is based on combining the approach of Lewicka and Pakzad(2017) with a new diagonalization procedure which avoids the use of conformal coordinates, which was introduced by De Lellis et al.(2018) for the isometric immersion problem.

关键词： Monge-Ampére equation convex integration weak solutions

A personalized electronic textile for ultrasensitive pressure sensing enabled by biocompatible MXene/ PEDOT:PSS composite

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Carbon Energy 2024年第3期6卷 224-238页

作者： Yahua Li wentao cao Zhi Liu Yue Zhang Ziyan Chen Xianhong Zheng Department of Interventional Radiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina School of Textile and Garment Anhui Polytechnic UniversityWuhuAnhuiChina Department of Prosthodontics Shanghai Stomatological Hospital and School of StomatologyFudan UniversityShanghaiChina College of Chemistry Chemical Engineering and BiotechnologyDonghua UniversityShanghaiChina

Flexible,breathable,and highly sensitive pressure sensors have increasingly become a focal point of interest due to their pivotal role in healthcare monitoring,advanced electronic skin applications,and disease ***,traditional methods,involving elastomer film-based substrates or encapsulation techniques,often fall short due to mechanical mismatches,discomfort,lack of breathability,and limitations in sensing ***,there is a pressing need,yet it remains a significant challenge to create pressure sensors that are not only highly breathable,flexible,and comfortable but also sensitive,durable,and ***,we present a biocompatible and breathable fabric-based pressure sensor,using nonwoven fabrics as both the sensing electrode(coated with MXene/poly(3,4-ethylenedioxythiophene):polystyrene sulfonate[PEDOT:PSS])and the interdigitated electrode(printed with MXene pattern)via a scalable spray-coating and screen-coating *** resultant device exhibits commendable air permeability,biocompatibility,and pressure sensing performance,including a remarkable sensitivity(754.5 kPa^(−1)),rapid response/recovery time(180/110 ms),and robust cycling ***,the integration of PEDOT:PSS plays a crucial role in protecting the MXene nanosheets from oxidation,significantly enhancing the device's long-term *** outstanding features make this sensor highly suitable for applications in fullrange human activities detection and disease *** study underscores the promising future of flexible pressure sensors in the realm of intelligent wearable electronics,setting a new benchmark for the industry.

关键词： biocompatibility MXene pressure sensor screen printing textile

Assembly of Nanowires into Macroscopic One‑Dimensional Fibers in Liquid State

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Advanced Fiber Materials 2023年第3期5卷 928-954页

作者： wentao cao Xinyu Zhao Bingqiang Lu Daxiang Cui Feng Chen Center for Orthopaedic Science and Translational Medicine Department of OrthopaedicsShanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200072People’s Republic of China National Engineering Research Center for Nanotechnology Shanghai 200241People’s Republic of China Institute of Micro‑Nano Science and Technology School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Natural structural materials,such as spider silk,wood,and bone,are universally acknowledged as the gold standard for the ideal combinations of strength and *** exceptional integrated performance of these biological materials can be ascribed to their multiscale hierarchical architectures and *** the hierarchical assembly feature of natural materials,artificial fibers,which are generated through the one-dimensional(1D)assembly of nanowires,have been widely reported with remarkable flexibility and ***,the distinguishing feature of nanowires’1D assembly can bridge the unique properties of nanowires with their potential functional *** tutorial review summarizes the recent developments in the assembly of nanowires into macroscopic 1D fibers in the liquid *** begin by introducing the general strategies and mechanisms for assembling nanowires in one direction and then,illustrate their potential applications in energy storage,sensors,biomedical engineering,***,a brief summary and some personal perspectives on the future research directions of nanowires’1D assembly are also proposed.

关键词： One-dimensional assembly Nanowires Fibers Liquid state

Ultrathin and Flexible CNTs/MXene/Cellulose Nanofibrils Composite Paper for Electromagnetic Interference Shielding

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Nano-Micro Letters 2019年第4期11卷 276-292页

作者： wentao cao Chang Ma Shuo Tan Mingguo Ma Pengbo Wan Feng Chen Department of Orthopedics Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200072People’s Republic of China Engineering Research Center of Forestry Biomass Materials and Bioenergy Beijing Key Laboratory of Lignocellulosic ChemistryCollege of Materials Science and TechnologyBeijing Forestry UniversityBeijing 100083People’s Republic of China Center of Advanced Elastomer Materials State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

As the rapid development of portable and wearable devices,different electromagnetic interference(EMI)shielding materials with high efficiency have been desired to eliminate the resulting radiation ***,limited EMI shielding materials are successfully used in practical applications,due to the heavy thickness and absence of sufficient strength or ***,an ultrathin and flexible carbon nanotubes/MXene/cellulose nanofibrils composite paper with gradient and sandwich structure is constructed for EMI shielding application via a facile alternating vacuum-assisted filtration *** composite paper exhibits outstanding mechanical properties with a tensile strength of 97.9±5.0 MPa and a fracture strain of 4.6±0.2%.Particularly,the paper shows a high electrical conductivity of 2506.6 S m?1 and EMI shielding effectiveness(EMI SE)of 38.4 dB due to the sandwich structure in improving EMI SE,and the gradient structure on regulating the contributions from reflection and *** strategy is of great significance in fabricating ultrathin and flexible composite paper for highly efficient EMI shielding performance and in broadening the practical applications of MXene-based composite materials.

关键词： MXene Carbon nanotubes Cellulose nanofibrils Mechanical property Electromagnetic interference shielding

Bioinspired MXene-Based User-Interactive Electronic Skin for Digital and Visual Dual-Channel Sensing

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Nano-Micro Letters 2022年第7期14卷 228-245页

作者： wentao cao Zheng Wang Xiaohao Liu Zhi Zhou Yue Zhang Shisheng He Daxiang Cui Feng Chen Department of Orthopedic School of MedicineSpinal Pain Research InstituteShanghai Tenth People’s HospitalTongji UniversityShanghai 200072People’s Republic of China National Engineering Research Center for Nanotechnology Shanghai 200241People’s Republic of China Institute of Micro-Nano Science and Technology School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

User-interactive electronic skin(e-skin) that could convert mechanical stimuli into distinguishable outputs displays tremendous potential for wearable devices and health care applications. However, the existing devices have the disadvantages such as complex integration procedure and lack of the intuitive signal display function. Here, we present a bioinspired user-interactive e-skin, which is simple in structure and can synchronously achieve digital electrical response and optical visualization upon external mechanical stimulus. The e-skin comprises a conductive layer with a carbon nanotubes/cellulose nanofibers/MXene nanohybrid network featuring remarkable electromechanical behaviors, and a stretchable elastomer layer, which is composed of silicone rubber and thermochromic pigments. Furthermore, the conductive nanohybrid network with outstanding Joule heating performance can generate controllable thermal energy under voltage input and then achieve the dynamic coloration of silicone-based elastomer. Especially, such an innovative fusion strategy of digital data and visual images enables the e-skin to monitor human activities with evermore intuition and accuracy. The simple design philosophy and reliable operation of the demonstrated e-skin are expected to provide an ideal platform for next-generation flexible electronics.

关键词： MXene Electronic skin Electromechanical behavior Joule heating Visualization

Clean Monascus pigments production from Chinese rice wine wastes through submerged fermentation

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Food Bioscience 2023年第2期52卷 843-850页

作者： Mengfei Long Yongchao Cai Nan Zheng Zhi Lu wentao cao Yaxian Li Xiaomei Pei Osire Tolbert Xiaole Xia The Key Laboratory of Industrial Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi214122China Infinitus(China)Co.Ltd. Guangzhou510665China Faculty of Biology Shenzhen MSU-BIT UniversityShenzhen518172China

The potential for Monascus pigments(MPs)production in a mixture of Chinese rice wine lees,soaked rice wastewater and broken rice was *** production reached 120.1 U/mL with optimal solid-liquid ratio of culture medium 1:10 and 20 g/L broken rice addition at shake flask *** further explored the effects of stirring speed on MPs production in 7.5 L agitated *** stirring speed had a great impact on cell morphology and the maximum MPs concentration and yield were 128.4 U/mL and 8174 U/g respectively at 400 *** soluble chemical oxygen demand for the soaked rice wastewater decreased by 78.7%,which was mainly due to the intake of carbohydrates,organic acids and amino ***,a simultaneous fermentation process and production system with two-stage stirring speed control strategy was further developed in the 50 L pilot scale,in which the MPs production reached 158.9 U/***,Chinese rice wine wastes were fully utilized without addition of organic solvents during the process and no generation of new *** results showed that Monascus was capable of converting Chinese rice wine wastes into natural pigments by submerged fermentation,which could provide an economic and environmentally friendly approach to reduce the cost of wastes treatment as well as high-value utilization.

关键词： Monascus pigments Submerged fermentation Chinese rice wine wastes Pilot scale fermentation Simultaneous fermentation process and production system

Structural Style and Metamorphic Conditions of the Jinshajiang Metamorphic Zone, Eastern Tibetan Plateau

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Structural Style and Metamorphic Conditions of the Jinshajia...

Geology,isotopes and geochronology of the Caijiaping Pb-Zn deposit in the North Wuyi area,South China:Implications for petrogenesis and metallogenesis

2014年中国地球科学联合学术年会——专题49：华南大陆构造

作者： Dan-Ping Yan wentao cao Liang Qiu Yixi Zhang Jingwei Qiu The State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing

The Jinshajiang metamorphic zone(JMZ)is a Barrovian sequence distributed within the Jinshajiang suture zone(JSZ),which was produced by closure of a branch of the paleo-Tethys *** studies of metamorphic rocks in the JSZ have presented very different interpretations of deformation and metamorphism of the *** have identified three stages of polyphase metamorphism,M1,M2 and M3,corresponding to deformations D1,D2 and D3,in the eastern part of the *** Barrovian metamorphic sequence M1 exhibits a metamorphic field gradient of chlorite-muscovite,muscovite-biotite,garnet,staurolite-kyanite and sillimanite *** in garnet and staurolite grains(chlorite,mica,quartz,feldspar,ilmenite and graphite)indicate that M1 reflects greenschist facies *** M2 metamorphism formed a dominant S1

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Geology,isotopes and geochronology of the Caijiaping Pb-Zn d...

中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： Yanpei Dai Xinqi Yu Lianchang Zhang wentao cao Yudi Zhu Chunlin Li Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences School of the Earth Sciences and Resources China University of Geosciences Department of Geoscience University of Iowa Institute of Geomechanics Chinese Academy of Geological Sciences

The Caijiaping Pb-Zn deposit is a recently discovered subvolcanic hydrothermal deposit in the North Wuyi *** mineralization is generally distributed at the contact of rhyolite porphyry and sandstone,and in the interlayer crushed zone of Early Jurassic *** minerals in this deposit mainly consist of abundant sphalerite,galena,pyrite and ***,chloritization and sericitization are widely developed and closely related to the Pb-Zn *** δS values of early dark brown sphalerite(marmatite),main-stage sphalerite and galena(- 1.1-2.5‰ average 0.83‰) suggest that the sulfur was mainly sourced from a magmatic *** isotope ratios in the sulfide minerals,rhyolite porphyry and sandstone are relatively homogeneous(Pb/Pb = 17.786-18.612,Pb/Pb = 15.504-15.635,Pb/Pb = 38.115-38.798),and are compatible with metamorphic rocks of IVIesoproterozoic Zhoutan Group(Wuyi metamorphosed basement).Early Jurassic sandstone,deposited in an active continental margin or continental arc setting,exhibits low textural maturity and displays geochemical similarities to the Zhoutan *** rhyolite porphyry,with features of volcanic arc granite,also shows an affinity with the Zhoutan *** zircon U-Pb dating shows that the rhyolite porphyry was emplaced at 156.0 ± 1.2 Ma,indicating that Caijiaping mineralization formed later than 156 *** isotope compositions of the rhyolite porphyry[ε(t) = —14.3 to —8.5,average —10.6]imply that it was mainly derived from reworking of ancient *** feldspar selected from felsic veins within the ore-cutting F4 fault yields a Ar/Ar age of 120.0 ± 4.0 Ma,indicating that the Pb-Zn mineralization formed before120 ***,the age of mineralization is bracketed between 156 and 120 *** with regional geological information,we propose that the Caijiaping mineralization mainly formed from magmatic hydrothermal processes in a regionally extensional setting,and the Wuyi metamorphosed basement

关键词： S-Pb-Hf isotopes Zircon U-Pb dating 40Ar/39Ar dating Ore genesis Wuyi metamorphosed basement

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利用TIN和高程梯度进行高程点抽稀

测绘通报 2017年第5期 110-112页

作者：曹文涛何伟武汉市测绘研究院湖北武汉430022

为了解决系列比例尺地形图缩编过程中高程点的抽稀问题,考虑到高程点分布的密度和地形起伏等因素,基于高程点构建了TIN,再结合平均高程面、高程梯度和局部高程最值点,对高程点进行了筛选抽稀。

关键词： TIN 高程梯度高程点抽稀

有机飞机除冰液作用下普通混凝土的抗冻性微观机理分析

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湖南大学学报（自然科学版） 2017年第11期44卷 73-80页

作者：马好霞余红发李创曹文涛南京航空航天大学航空宇航学院江苏南京210016 南京航空航天大学金城学院江苏南京211156 北京古城房地产开发有限公司北京100124 江苏省交通科学研究院股份有限公司江苏南京210017

结合现有的冻融破坏理论,研究了以乙二醇为主要成份的飞机除冰液作用下普通混凝土冻融损伤失效规律与特点.采用X射线衍射仪、扫描电子显微镜和X射线能量色散谱仪,进行试件冻融后的物相组成、微观结构变化以及微区元素分析.实验结果表明... 详细信息

结合现有的冻融破坏理论,研究了以乙二醇为主要成份的飞机除冰液作用下普通混凝土冻融损伤失效规律与特点.采用X射线衍射仪、扫描电子显微镜和X射线能量色散谱仪,进行试件冻融后的物相组成、微观结构变化以及微区元素分析.实验结果表明:低质量分数乙二醇对混凝土抗冻剥蚀性比水严重,高质量分数乙二醇对混凝土的冻融破坏比水轻微.飞机除冰液质量分数越低,对混凝土的冻融破坏作用越严重;低质量分数乙二醇对普通混凝土的冻融破坏以表面剥落破坏为主,质量损失首先达到破坏标准.高质量分数乙二醇对普通混凝土的冻融破坏以相对动弹性模量首先达到破坏标准,主要表现为端部的严重冻疏.在乙二醇飞机除冰液冻融过程中普通混凝土内没有新物质生成,水化硅酸钙凝胶与氢氧化钙晶体未发生变化.普通混凝土在乙二醇飞机除冰液中的冻融破坏机理与水中一样,以结冰压破坏为主.

关键词：飞机除冰液普通混凝土冻融破坏结冰压微观分析