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Anomalously enhanced thermal stability of phosphorene via metal adatom doping: An experimental and first-principles study

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Nano Research 2016年第9期9卷 2687-2695页

作者： Xuewei Feng Vadym V.Kulish Ping Wu xinke Liu Kah-Wee Ang Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore Entropic Interface Group(EIG) Engineering Product DevelopmentSingapore University of Technology and Design(SUTD)8 Somapah RoadSingapore 487372Singapore College of Materials Science and Engineering Shenzhen Engineering Laboratory for Advanced Technology of CeramicsNanshan District Key Lab for Biopolymer and Safety EvaluationShenzhen University3688 Nanhai AvenueShenzhen 518060China

Atomically thin black phosphorus, also known as phosphorene, is an emerging two-dimensional (2D) material, which has attracted increasing attention due to its unique electronic and optoelectronic properties. However, the reduced thermal stability of phosphorene limits its suitability for high-temperature fabrication processes, which could be detrimental for the performance of phosphorenebased devices. Here, we investigate the impact of doping by Al and Hf transition metal adatoms on the thermal stability of phosphorene. The formation of Al–P covalent bonds was found to significantly improve the thermal coefficients of the Ag1, B2g, and Ag2phonon modes to 0.00044, 0.00081, and 0.00012 cm–1·°C–1, respectively, which are two orders of magnitude lower than those observed for pristine P–P bonds (~0.01 cm–1·°C–1). First-principles calculations within the density functional theory framework reveal that the observed thermal stability enhancement in the Al-doped material reflects a significantly higher Al binding energy, due to the stronger Al–P bonds compared to the weak van der Waals interactions between adjacent P atoms in the undoped material. The present work thus paves the way towards phosphorene materials with improved structural stability, which could be promising candidates for potential nanoelectronic and optoelectronic applications. [Figure not available: see fulltext.] © 2016, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.

关键词： phosphorene black phosphorus adatom doping transition metals thermal stability

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Foveated glasses-free 3D display with ultrawide field of view via a large-scale 2D-metagrating complex

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Light(Science & Applications) 2021年第11期10卷 2217-2225页

作者： Jianyu Hua Erkai Hua Fengbin Zhou Jiacheng Shi Chinhua Wang Huigao Duan Yueqiang Hu Wen Qiao Linsen Chen School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University215006SuzhouChina Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University215006SuzhouChina State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University410082ChangshaChina SVG Optronics Co.Ltd215026SuzhouChina

Glasses-free three-dimensional(3D)displays are one of the game-changing technologies that will redefine the display industry in portable electronic ***,because of the limited resolution in state-of-the-art display panels,current 3D displays suffer from a critical trade-off among the spatial resolution,angular resolution,and viewing *** by the so-called spatially variant resolution imaging found in vertebrate eyes,we propose 3D display with spatially variant information *** experiences with smooth motion parallax are maintained at the central view,while the viewing angle is enlarged at the periphery *** is enabled by a large-scale 2D-metagrating complex to manipulate dot/linear/rectangular hybrid shaped ***,a video rate full-color 3D display with an unprecedented 160°horizontal viewing angle is *** thin and light form factors,the proposed 3D system can be integrated with off-the-shelf purchased flat panels,making it promising for applications in portable electronics.

关键词： portable spatially glasses

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Hybrid co-based MOF nanoboxes/CNFs interlayer as microreactors for polysulfides-trapping in lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第6期30卷 469-476,I0012页

作者： Jing Li Caiming Jiao Jinghui Zhu Liubiao Zhong Tuo Kang Sehrish Aslam Jianyong Wang Sanfei Zhao Yejun Qiu Shenzhen Engineering Lab of Flexible Transparent Conductive Films School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina China Ship Development and Design Center Wuhan 430064HubeiChina

Lithium-sulfur battery is desirable for the future potential electrochemical energy storage device with advantages of high theoretical energy density,low cost and environmental ***,some natural hindrances,particularly fast capacity degradation resulting from the migration of dissolved polysulfide intermediates,remain to be significant challenges prior to the practical *** this work,a composite interlayer of carbon nanofibers(CNFs)which are enriched by Co-based metal organic frameworks(ZIF-67)growth in-situ is ***,physical blocking and chemical trapping abilities are obtained synergistically from the ZIF/CNFs interlayer,which enables to restrain the dissolution of polysulfides and alleviate shuttle ***,the three-dimensional fiber networks provide an interconnected conductive framework between each ZIF microreactor to promote fast electron transfer during cycling,thus contributing to excellent rate and cycling *** a result,Li-S cells with ZIF/CNFs interlayer show a high specific capacity of 1334 mAh g^(-1) at 1 C with an excellent cycling stability over 300 ***,this scalable and affordable electrospinning fabrication method provides a promising approach for the design of MOFs-derived carbon materials for high performance Li-S batteries.

关键词： Carbon nanofibers Metal organic framework Lithium–sulfur battery Electrochemical performance

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Synthesis of a novel Al foam with a periodic architecture by introducing hollow Al tubes and Al/Mg powders

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Journal of Materials Science & Technology 2023年第17期148卷 105-115页

作者： Zhigang Xu Dayong Shen Kai Wang Peng He Jian Zhang Hao Zhang Peng Cao Shangyu Huang Jian Peng Qiang Shen Chuanbin Wang Lianmeng Zhang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Wuhan Second Ship Design and Research Institute Wuhan 430205China Department of Chemical and Materials Engineering University of AucklandPrivate Bag 92019Auckland 1142New Zealand

In this work,we synthesized a brand-new Al foam with a periodic structure via a simple powder metallurgical *** periodic architecture consists of both hierarchical porous and bi-directional composition-graded *** results show that the hierarchical porous material includes large pores on millimeter scale inheriting from the hollow structure of the Al tubes,and small pores on mi-crometer scale produced by the sintering of Al/Mg *** bi-directional Mg concentration-graded structure is formed in the tube walls due to the condensation of Mg vapor in the inner tube *** addition of Mg powders achieves excellent metallurgical bonding between the Al powders and the hollow tubes at 550℃.The plateau stress and energy absorption capacity of the Al foam in y-axis compression are significantly higher than that in the x-axis due to their anisotropic *** general,the Al foam with Mg addition presents the most superior compression performance,and we believe that our find-ings could open up a unique strategy for developing high-performance metallic foams with the periodic architecture involving both hierarchical porous and bi-directional graded structure.

关键词： Al foam Hollow Al tube Mg evaporation Bi-directional composition-graded structure Compression properties Energy absorbing performance

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Mental Models and Ecological Interface design: An Experimental Investigation

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2002年第3期46卷 270 - 274页

作者： Olivier St-Cyr Catherine M. Burns Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

We studied the impact of Ecological Interface design (EID) displays on mental models using the DURESS II simulator. To assess mental models we used a card sorting exercise, a network building exercise based on the Abstraction Hierarchy, and a system behavior prediction exercise. Participants in the EID condition performed significantly better on the card sorting and network building exercises, but poorer on the prediction exercise. Our results are mixed, suggesting that EID may improve the understanding of means- end links and yet, not improve the ability to predict system behavior. The relatively limited experience of participants with the interface as well as our selection of knowledge elicitation techniques may have influenced these results. More research is needed to fully evaluate the impact of EID on mental models.

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Usability Evaluation of a Mobile Ecological Interface design Application for Diabetes Management

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2005年第11期49卷 1042 - 1046页

作者： Jordanna Kwok Catherine M. Burns Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

Healthcare applications for small-screen mobile devices are becoming increasingly common for medical professionals and patients. Even so, usability issues including navigation and screen clutter remain a challenge. Ecological Interface design (EID) was used to design a patient-oriented diabetes management display for Java-enabled mobile devices, making it one of the first mobile EID (mEID) applications. This paper presents a usability evaluation of the diabetes management application, which compares the mEID display to a modified taskbased display (mEID+Task). The mEID+Task display integrates functional task characteristics such as frequency and necessity; menu structure, item ordering, item labelling, and input scheme were varied. Results showed that normalised trial completion times were moderately faster in the mEID+Task display than in the mEID display, while no differences were observed in trial completion accuracy. Furthermore, the mEID+Task display received higher preference ratings than the mEID display alone. The findings suggest that the usability of mEID displays can be improved by incorporating a task-oriented approach.

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Mental Models and the Abstraction Hierarchy: Assessing Ecological Compatibility

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2001年第4期45卷 297 - 301页

作者： Olivier St-Cyr Catherine M. Burns Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

This paper presents a new approach to understanding mental models for complex industrial systems. Using the Abstraction Hierarchy (AH) framework as a way to describe mental models, we propose an approach to assess ecological compatibility between an operator's internal mental model and a model of the environment. In order to do so, we have combined and built upon the previous work of Rasmussen (1979) and Moray (1996). We believe that this new approach can assess ecological compatibility and ultimately provide the operator with a more accurate and complete internal mental model that reflects the reality of the environment. We argue that Ecological Interface design (EID) is a way to link mental models and the environment. Future work will be needed in order to assess ecological compatibility. This includes capturing and examining operators' internal mental models, and comparing them with models of the environment.

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Choosing The Best from the Good: Display engineering Principles

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2005年第17期49卷 1556 - 1560页

作者： Catherine M. Burns Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

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A miniature instrument tip force sensor for robot/human cooperative microsurgical manipulation with enhanced force feedback 3rd

A miniature instrument tip force sensor for robot/human coop...

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3rd International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2000

作者： Berkelman, Peter J. Whitcomb, Louis L. Taylor, Russell H. Jensen, Patrick Engineering Research Center for Computer Integrated Surgical Systems and Technology and Microsurgery Advanced Design Lab Johns Hopkins University BaltimoreMD21218 United States

ISBN: (纸本)3540411895

This paper reports the development of a new miniature force sensor to measure forces at the tip of a microsurgical instrument in three dimensions with sub-millinewton resolution. This sensor will enable enhanced force feedback during surgical intervention in which a user directly manipulates surgical instruments cooperatively with a forcereflecting robot arm. This "steady-hand" scaled force interaction enables a surgeon to sense millinewton forces between the instrument and delicate body tissues during microsurgery which would otherwise be far below the threshold of human tactile sensing. The magnified force feedback can increase the dexterity of the surgeon and improve safety by preventing large damaging forces from being exerted by the instrument. The design and analysis of the new force sensor is presented with preliminary testing and force scaling control results. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Feedback

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A probabilistic conceptual design analysis of multi-stage launch vehicles

A probabilistic conceptual design analysis of multi-stage la...

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Collection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

作者： Villeneuve, Frederic Osburg, Jan Mavris, Dimitri N. Georgia Institute of Technology Atlanta GA 30332 School of Aerospace Engineering Georgia Institute of Technology Atlanta GA 30332 Aerospace Systems Design Lab. Georgia Institute of Technology Atlanta GA 30332 Aerospace Systems Design Lab. Department of Advanced Design School of Aerospace Engineering Georgia Institute of Technology Atlanta GA 30332

ISBN: (纸本)1563477165

Current methodology for the conceptual design of space vehicles necessitates the evaluation of a large number of different concepts and configurations. With existing legacy codes, evaluating the performance of all design combinations becomes very time -consuming and design space limiting. Up to now, a commonly used solution to this problem was the creation of quadratic response surface equations. However, the design space of multi-stages space vehicles is highly non-linear and cannot be adequately modeled by such response surface equations. To address this issue, a Rapid Access-to-Space Analysis Code (RASAC) and a Requirements Exploration Tool (RET) were created and are described in this paper. Case study examples are shown in order to see the design process improvement.

关键词： Computer aided design

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