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先进陶瓷(英文) 2023年第8期12卷 1521-1532页

作者： Hanchi Ruan Theo Graves Saunders Henry Giddens Hangfeng Zhang Achintha Avin Ihalage Jonas Florentin Kolb matthew blunt Sajad Haq Haixue Yan Yang Hao School of Electronic Engineering and Computer Science Queen Mary University of LondonLondon E14NSUK School of Engineering and Materials Science Queen Mary University of LondonLondon E14NSUK Department of Chemistry University College LondonLondon WC1H 0AJUK Advanced Services and Products QinetiQFarnborough GU140LXUK

Ferroelectric(FE)thin films have recently attracted renewed interest in research due to their great potential for designing novel tunable electromagnetic devices such as large intelligent surfaces(LISs).However,the mechanism of how a polar structure in the FE thin films contributes to desired tunable performance,especially within the microwave frequency range,which is the most widely used frequency range of electromagnetics,has not been illustrated *** this paper,we described several straightforward and cost-effective methods to fabricate and characterize Ba_(0.6)Sr_(0.4)TiO_(3)(BST)thin films at microwave *** prepared BST thin films here exhibit homogenous structures and great tunability(h)in a wide frequency and temperature range when the applied field is in the out-of-plane *** high tunability can be attributed to high concentration of polar *** response to the applied direct current(DC)field was directly visualized using a novel non-destructive near-field scanning microwave microscopy(NSMM)*** results have provided some intriguing insights into the application of the FE thin films for future programmable high-frequency devices and systems.

关键词： ferroelectric(FE) microwave tunability polarization thin film

Two-dimensional Covalent Organic Frameworks（2D-COFs） Via Schiff-base Condensation Reactions Between Porphyrins

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Two-dimensional Covalent Organic Frameworks（2D-COFs） Via S...

Flow in Porous Media in the Energy Transition

中国化学会第十六届胶体与界面化学会议

作者：胡雅 Hugo Bronstein matthew blunt Department of Chemistry University College London School of Materials Science and Engineering Sun Yat-Sen University

Since the successful isolation of individual graphene sheets in 2003 two-dimensional covalent materials have evolved in to one of the most widely studied areas of chemistry and physics.A particularly successful way of synthesizing new 2 D covalent materials has been via a bottom-up approach in which suitably functionalised molecules are covalently linked together to form 2 D covalent-organic frameworks（2 D-COFs）.This approach has been employed with a range of different reactions schemes and molecular building *** important step forward in this area was the use of reversible reactions that allowed the formation of the 2 D-COF to take place under thermodynamic control,leading to the formation of highly ordered *** this work we present recent scanning tunneling microscopy（STM） and atomic force microscopy（AFM） results on the growth of 2 D-COFs using free-base and metal-containing tetraphenyl amine porphyrin（TAPP） building *** TAPP molecules are linked together via a Schiff-base condensation reaction with benzene-1,4-dicarboxaldehyde（BDCA）.This reaction forms imine linkages between the porphyrin *** controlling the synthesis conditions highly ordered and large scale（100’s nm） 2 D-COFs can be *** addition,by controlling the symmetry and chemical functionality of both the porphyrin and the linking aldehyde molecule 2 D-COFs with more complex structures can be ***,investigations on the possibility of post synthesis functionalization of the resulting 2 D-COF structures will be discussed.

关键词： On-surface synthesis Monolayer covalent-organic frameworks Scanning probe microscopy Schiff-base condensation

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Engineering 2022年第7期8卷 10-14页

作者： Martin J.blunt Qingyang Lin Department of Earth Science and Engineering Imperial College LondonLondon SW72BPUK State Key Laboratory of Clean Energy Utilization State Environmental ProtectionEngineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China

*** context Flow in porous media is encountered in a wide variety of natural and engineered settings,including gas exchange in lungs and blood vessels,water extraction from underground aquifers,hydrocarbon production,and microfluidics in drug delivery and food *** rock is a porous medium that holds water and hydrocarbons,and is a potential storage site for carbon dioxide(CO_(2))and *** manufactured devices also contain porous media to allow the transport of gases and water,including fuel cells,electrolyzers,and electrocatalysts for CO_(2) *** performance is limited by how rapidly two fluid phases can flow through a porous layer.

关键词： underground rock setting

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人工髋关节柄磨损评定中的三维表面形貌测量

应用基础与工程科学学报 2012年第1期20卷 139-148页

作者：张洪玉蒋向前 blunt L Brown L 清华大学摩擦学国家重点实验室北京100084 Centre for Precision Technologies University of Huddersfield

论述了物体表面形貌的测量在工程上的重要性,指出了目前学术界与工业界所普遍采用的二维表面测量与评定的局限性,进而说明了三维表面测量的重大意义.在此基础上,将三维表面测量仪器,即接触式触针仪器、非接触式光学干涉仪以及原子力显... 详细信息

论述了物体表面形貌的测量在工程上的重要性,指出了目前学术界与工业界所普遍采用的二维表面测量与评定的局限性,进而说明了三维表面测量的重大意义.在此基础上,将三维表面测量仪器,即接触式触针仪器、非接触式光学干涉仪以及原子力显微镜的原理、现状进行了分析比较.同时,对三维表面的评定技术及其三维表面参数,特别是"伯明翰14参数"的发展做了系统的论述.最后,以三维表面形貌测量在人工髋关节柄磨损评定中的应用为例,其结果表明,粗糙表面的髋关节柄和骨水泥之间的磨损为磨粒磨损,而抛光表面的髋关节柄和骨水泥之间的磨损为微动磨损,此为生物医学上进一步降低磨损微粒的产生、提高人工髋关节的寿命提供了重要参考.

关键词：三维测量表面形貌生物摩擦学髋关节柄摩擦磨损

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二氧化碳驱提高石油采收率数值模拟研究

天然气工业 2007年第4期27卷 142-144页

作者：关振良谢丛姣齐冉 Martin blunt 中国地质大学资源学院英国帝国理工学院地球科学与工程系

人类大量排放的CO2温室气体使全球气候变暖,其幅度已经超出了地球本身自然变动的范围,对人类的生存和社会经济的发展构成了严重的威胁。CO2的地质处置最有效的方式就是注入油气田,不但封存了二氧化碳,而且还可提高油气田的采收率。针对... 详细信息

人类大量排放的CO2温室气体使全球气候变暖,其幅度已经超出了地球本身自然变动的范围,对人类的生存和社会经济的发展构成了严重的威胁。CO2的地质处置最有效的方式就是注入油气田,不但封存了二氧化碳,而且还可提高油气田的采收率。针对这一问题,应用Eclipse软件对某油田注入CO2进行水气交替驱等6套开发调整方案进行了数值模拟对比研究。结果表明,该方法可提高石油采收率5%～10%,相当于增加了20亿美元的经济效益;地质储存CO2共计55×104t,相当于一个500万人口的大城市一年排出的温室气体总量,其环境保护的意义是巨大的。研究结果还表明,水平井水气交替驱是地质储存CO2、提高石油采收率的最优方法,该方法累计产油量最大,储集的CO2也最多。这一结论为其他类似油田三次采油提供了技术参考,也可为我国在2012年后执行京都议定书减排CO提供依据。

关键词： CO2 地质处置水气交替驱替石油采收率数值模拟环境保护

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三维表面测量的发展

工程设计学报 2000年第4期7卷 98-100页

作者：蒋向前 L.blunt 华中科技大学机械科学与工程学院仪器系湖北武汉430074 University of Hudders field

在过去八年里 ,三维表面测量已经由一个新鲜事物发展成为评估工程表面特性的重要依据 ,并得到广泛应用。表面形貌对于表面特性 ,如摩擦、磨损、润滑、腐蚀、疲劳、涂层等 ,具有举足轻重的影响。为了充分分析和研究表面特性 ,表面测量与... 详细信息

在过去八年里 ,三维表面测量已经由一个新鲜事物发展成为评估工程表面特性的重要依据 ,并得到广泛应用。表面形貌对于表面特性 ,如摩擦、磨损、润滑、腐蚀、疲劳、涂层等 ,具有举足轻重的影响。为了充分分析和研究表面特性 ,表面测量与评估应按三维考虑。近年来 ,许多世界上著名的学术团体已致力于研究一个系列的三维表面粗糙度标准。

关键词：表面形貌三维评估三维表面测量表面粗糙度

Progress In Surface Texture

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Progress In Surface Texture