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Comprehensive evaluation factor of optoelectronic properties for transparent conductive metallic mesh films Research Articles
Yilei Zhang, Jinxuan Cao, Zhengang Lu, Heyan Wang, Jiubin Tan,luzhengang@hit.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 11, Pages 1532-1540 doi: 10.1631/FITEE.2000690
Keywords： 金属网栅；TOPSIS法；熵权法；综合评价因子；透明导电膜
Transformation of Fibrous Membranes from Opaque to Transparent Under Mechanical Pressing Article
Chao Wang, Jing Zhao, Liu Liu, Peng Zhang, Xianfeng Wang, Jianyong Yu, Bin Ding
Engineering 2022, Volume 19, Issue 12, Pages 84-92 doi: 10.1016/j.eng.2021.02.018
There is a great demand for transparent films, membranes, or substrates in the fields of intelligent wearables, electronic skins, air filtration, and tissue engineering. Traditional materials such as glass and plastics cannot satisfy these requirements because of the lack of interconnected pores, undesirable porosity, and flexibility. Electrospun fibrous membranes offset these shortcomings because they contain small pores and have high porosity as well as outstanding flexibility. Thus, the development of transparent electrospun fibrous membranes is of great value. This work reports a simple and effective way to develop flexible and porous transparent fibrous membranes (TFMs) directly from electrospun fibrous membranes via mechanical pressing, without employing any other additives. In addition, the relationship between the transparency performance and the molecular structure of the polymers after pressing was summarized for the first time. After mechanical pressing, the membranes maintained fibrous morphology, micron-sized pores, and desired porosity. Polystyrene fibrous membranes, which exhibited excellent optical and mechanical properties, were used as a reference. The TFMs possessed high transparency (∼89% visible light transmittance at 550 nm), high porosity (10%–30%), and strong mechanical tensile strength (∼148 MPa), nearly 78 times that of the pristine electrospun fibrous membranes. Moreover, this study demonstrated that transparent and conductive membranes can be fabricated based on TFMs using vacuum-assisted filtration of silver nanowires followed by mechanical pressing. Compared with indium tin oxide films, conductive TFMs exhibited good electrical conductivities (9 Ω per square (Ω·sq−1), 78% transmittance at 550 nm) and notable mechanical performance (to bear abundant bending stresses).
Keywords： Transparent Electrospun fibrous membranes Porous structure Mechanical pressing Conductivity
From resource sharing to service sharing: opportunities and challenges of transparent computing
Zhang Yaoxue,Zhou Yuezhi
Strategic Study of CAE 2009, Volume 11, Issue 8, Pages 10-17
With the rapid development of computer and network technologies, the computing paradigm has evolved from the original mainframe computing to desktop (PC) computing, and then to network computing, and even pervasive computing. However, the existing computing paradigms all follow the thinking model of single machine or joint-based single machine and thus are characterized as resource sharing. In the new era of network or pervasive computing, users are mainly concerned about services and service sharing, and accordingly the computing will also shift from being characterized as resource sharing to service sharing. This paper proposes a new computing paradigm, transparent computing, which aims for service sharing and presents the concept, architecture and key technologies of transparent computing. Moreover, it also gives the prospect of the impact and future development of transparent computing.
Keywords： pervasive computing resource sharing service sharing transparent computing
Kang Huang, Shuhao Lin, Yu Xia, Yongsheng Xia, Feiyan Mu, Yuqin Lu, Hongyan Cao, Yixing Wang, Weihong Xing, Zhi Xu
Engineering 2023, Volume 28, Issue 9, Pages 69-78 doi: 10.1016/j.eng.2022.11.008
Ion conductive membranes (ICMs) with highly conductive proton selectivity are of significant importance and greatly desired for energy storage devices. However, it is extremely challenging to construct fast proton-selective transport channels in ICMs. Herein, a membrane with highly conductive proton selectivity was fabricated by incorporating porous carbon sieving nanospheres with a hollow structure (HCSNs) in a polymer matrix. Due to the precise ion sieving ability of the microporous carbon shells and the fast proton transport through their accessible internal cavities, this advanced membrane presented a proton conductivity (0.084 S·cm−1) superior to those of a commercial Nafion 212 (N212) membrane (0.033 S·cm−1) and a pure polymer membrane (0.049 S·cm−1). The corresponding proton selectivity of the membrane (6.68 × 105 S·min·cm−3) was found to be enhanced by about 5.9-fold and 4.3-fold, respectively, compared with those of the N212 membrane (1.13 × 105 S·min·cm−3) and the pure membrane (1.56 × 105 S·min·cm−3). Low-field nuclear magnetic resonance (LF-NMR) clearly revealed the fast proton-selective transport channels enabled by the HCSNs in the polymeric membrane. The proposed membrane exhibited an outstanding energy efficiency (EE) of 84% and long-term stability over 1400 cycles with a 0.065% capacity decay per cycle at 120 mA·cm−2 in a typical vanadium flow battery (VFB) system.
Keywords： Ion conductive membrane Hollow carbon sieving nanosphere Proton transport channel Flow battery
Research Progress of Hydrogen Separation Membrane
Luan Yongchao, Xiong Yalin, He Guangli, Liu Congmin, Li Shuai
Strategic Study of CAE 2022, Volume 24, Issue 3, Pages 140-152 doi: 10.15302/J-SSCAE-2022.03.015
Hydrogen is a significant industrial raw material and clean fuel, and hydrogen separation has significant social and economic values. Membrane separation has a wide application prospect in hydrogen separation as it uses simple devices, is environmentally friendly, and has high conversion efficiency and low cost of investment. Hydrogen separation membranes remain a research focus as their performance is the major factor that determines hydrogen separation efficiency. This study summarized the application demand and basic mechanism of hydrogen separation membranes and reviewed the research progress of dense metal, porous inorganic, metal-organic framework (MOF), organic polymer, and hybrid matrix membranes. Specifically, although porous inorganic, organic polymer, and hybrid matrix membranes have good hydrogen separation and purification performances, their separation performance still requires improvement when they are applied in distributed and small application scenarios. Improving the anti-poisoning performance of palladium-based metal membranes and optimizing the cost-effectiveness are effective ways to promote industrial application of membranes. Combining the advantages of porous inorganic and MOF membranes can facilitate the significant development of molecular sieving membranes. The high-temperature resistance and mechanical properties of organic polymer membranes require improvement. Modifying existing polymer membrane materials and preparing polymer alloys are two major directions for developing novel gas separation membranes. The performance of hybrid matrix membrane can be notably improved after controllable adjustment of its distribution. The research and application of multiple membranes has supported hydrogen separation and purification, and these membrane techniques will continue creating more engineering values once the number of available materials is increased and the preparation technologies are advanced in the future.
Keywords： hydrogen separation membrane dense metal membrane porous inorganic membrane metal-organic framework (MOF) membrane organic polymer membrane hybrid matrix membrane hydrogen purification
The progress of membrane adsorption and absorption
Lin Ligang,Ye Hui,Zhao Lizhi,Ding Xiaoli,Zhang Yuzhong
Strategic Study of CAE 2014, Volume 16, Issue 12, Pages 59-66
During recent years， membrane integration process has attracted wide attentions. The study on combination of the traditional separation technology and membrane process is conducive to the advantages such as high efficiency， easy online， etc. It is significant for the large-scale application of membrane integration process with low cost. Membrane adsorption and membrane absorption processes， which combined the advantages of membranes with adsorption， gained wide?applications for numerous occasions such as purification and separation. The research advances and development tendency of membrane adsorption and absorption will be introduced in this article， which can provide some suggestions for the researchers of related fields.
Keywords： membrane membrane adsorption membrane absorption
Monitor of Water Transparency in the China Sea by Using Satellite Remote Sensing
He Xianqiang,Pang Delu,Huang Erhui,Zhao Yanling
Strategic Study of CAE 2004, Volume 6, Issue 9, Pages 33-37
The traditional method of monitoring water transparency is the in-situ measurement by using ship et al. However, this method can not satisfy the large area, quick and real-time monitor demand of the ocean element, because of the inherent shortcoming of the in-situ measurement. It must combine the remote sensing method to fulfill the stereo monitor. This paper puts water transparency as the breakthrough, and studys the water transparency monitoring by using satellite remote sensing. The result shows that the inverse relative error is 22.6% by using remote sensing, and it is even better for clear water. A collection of water transparency products of the China sea for two years is generated by using the inverse algorithm and SeaWiFS data sets. Also, the analysis of the distribution and fluctuation patterns of water transparency in the China sea is carried out by using the established collection.
Keywords： the China sea water transparency remote sensing monitor
Research Progress in Proton Exchange Membrane Fuel Cell
Ren Xueyou
Strategic Study of CAE 2005, Volume 7, Issue 1, Pages 86-94
The developing status and research progress of PEMFC at home and abroad were outlined in the paper. Simultaneously, hydrogen storage technique, and some key technique including PEM, bipolar board, membrane electrode and electrocatalyst,as well as their pplication and future outlook are described.
Keywords： FC PEM bipolar board membrane electrode electrocatalyst developing status
The Basic Study for Quench Detection in Superconducting Electric Equipments
Yu Xiaoyan,Li Jingdong,Tang Yuejin
Strategic Study of CAE 2003, Volume 5, Issue 10, Pages 73-77
Quench of superconducting electric equipments is an important problem for superconducting electric power systems and will affect its operation. This paper presents the quench detection of SMES in power system operation, and puts forward forecast theory for quench detection.
Keywords： superconducting electric equipments quench detection superconducting electric power system forecast theory
Preparation and performance of homogeneous cellulose forward osmosis membrane
Zhang Bingtao,Zhang Lin,Huang He,Hou Li’an
Strategic Study of CAE 2014, Volume 16, Issue 7, Pages 57-61
The nonporous homogeneous cellulose membrane for forward osmosis was prepared via phase inversion method using ionic liquid 1-ethyl-3-methyl-imidazolium acetate (EMIMAc) as solvent, water as nonsolvent on a non-woven fabric substrate. The characterizations of Fourier transform infrared (FTIR) and X-ray diffraction (XRD) spectroscopies showed that no obvious change occurred in the chemical structure of cellulose after membrane formation, but the crystallinity had a certain degree of decline. The cross-section and the surface morphologies of the cellulose forward osmosis membrane were analyzed by scanning electron microscopy (SEM). The membrane performance were investigated by measuring water flux and rejection of simulated seawater. The water flux of the cellulose forward osmosis membrane, which the cellulose concentration is 8 %(wt) in casting solution, was 3.534 L/m2.h and the rejection for NaCl was more than 99 %, using 0.6 mol/L NaCl solution as the feed solution and lab-made nutrient solution as the draw solution.
Keywords： forward osmosis ionic liquid cellulose membrane phase inversion membrane preparation
Research progress in biomimetic and bioinspired membranes
Peng Dongdong,He Mingrui,Yang Hao,Zhang Bei,Gao Boxin,Fan Lin,Ding He,Nan Yanhu,Pan Fusheng,Su Yanlei,Wu Hong,Jiang Zhongyi
Strategic Study of CAE 2014, Volume 16, Issue 12, Pages 102-112
Biomimetics and bioinspiration strategy has achieved important advances in many fundamental and engineering science areas. A variety of biomimetic and bioinspired membranes with high performance have been designed and prepared by imitating the different compositions， delicate structures， mild formations and exceptional functions of biological materials in nature. These membranes have found broad applications in water treatment， gas separation and organic liquid mixture separation. Through imitating or inspired by the prototypes of cell membrane， lotus leaf and mussel， biomimetic and bioinspired membranes are fabricated by biomineralization， bioadhesion， and self-assembly methods to achieve the goal of green， high-efficiency and energy-saving. These membranes will play more and more important roles in efficient use and sustainable development in resources and energy， and is going to be an important branch in membrane and membrane process. This article will briefly summarize the recent progress in biomimetic and bioinspired membranes， especially the preparation and application of antifouling membranes， hybrid membranes and composite membranes.
Keywords： biomimetic and bioinspired membranes membrane and membrane process surface segregation biomineralization bioadhesion
Blockchain for Transparent Data Management Toward 6G Article
Xuemin (Sherman) Shen, Dongxiao Liu, Cheng Huang, Liang Xue, Han Yin, Weihua Zhuang, Rob Sun, Bidi Ying
Engineering 2022, Volume 8, Issue 1, Pages 74-85 doi: 10.1016/j.eng.2021.10.002
The wealth of user data acts as a fuel for network intelligence toward the sixth generation wireless networks (6G). Due to data heterogeneity and dynamics, decentralized data management (DM) is desirable for achieving transparent data operations across network domains, and blockchain can be a promising solution. However, the increasing data volume and stringent data privacy-preservation requirements in 6G bring significantly technical challenge to balance transparency, efficiency, and privacy requirements in decentralized blockchain-based DM. In this paper, we propose blockchain solutions to address the challenge. First, we explore the consensus protocols and scalability mechanisms in blockchains and discuss the roles of DM stakeholders in blockchain architectures. Second, we investigate the authentication and authorization requirements for DM stakeholders. Third, we categorize DM privacy requirements and study blockchain-based mechanisms for collaborative data processing. Subsequently, we present research issues and potential solutions for blockchain-based DM toward 6G from these three perspectives. Finally, we conclude this paper and discuss future research directions.
Keywords： Blockchain Data management Decentralization Transparency Privacy
Progress ofanti-fouling reverse osmosis/nanofiltration membrane
Qin Jiaxu,Zhang Lin,Hou Li´an
Strategic Study of CAE 2014, Volume 16, Issue 7, Pages 30-35
Anti-fouling membrane is an important research subject of reverse osmosis (RO) and the key to RO membrane application. In this paper, classification and influence factors of RO membrane-fouling are reviewed. Attention is focused on methods to improve anti-fouling property of RO membrane, including design of key monomer, physical surface modification, chemical modification, and blending modification. Prospect of anti-fouling RO membrane is made as well.
Keywords： reverse osmosis membrane anti-fouling influence factor membrane materials modification method
Design and Fabrication of Ceramic Catalytic Membrane Reactors for Green Chemical Engineering Applications Feature Article
Guangru Zhang, Wanqin Jin, Nanping Xu
Engineering 2018, Volume 4, Issue 6, Pages 848-860 doi: 10.1016/j.eng.2017.05.001
Catalytic membrane reactors (CMRs), which synergistically carry out separations and reactions, are expected to become a green and sustainable technology in chemical engineering. The use of ceramic membranes in CMRs is being widely considered because it permits reactions and separations to be carried out under harsh conditions in terms of both temperature and the chemical environment. This article presents the two most important types of CMRs: those based on dense mixed-conducting membranes for gas separation, and those based on porous ceramic membranes for heterogeneous catalytic processes. New developments in and innovative uses of both types of CMRs over the last decade are presented, along with an overview of our recent work in this field. Membrane reactor design, fabrication, and applications related to energy and environmental areas are highlighted. First, the configuration of membranes and membrane reactors are introduced for each of type of membrane reactor. Next, taking typical catalytic reactions as model systems, the design and optimization of CMRs are illustrated. Finally, challenges and difficulties in the process of industrializing the two types of CMRs are addressed, and a view of the future is outlined.
Keywords： Dense ceramic membrane Porous ceramic membrane Catalytic membrane reactor Gas separation Heterogeneous catalysis
Retrospect and Prospect of Study on Thin Film Lubrication
Ge Jianbin,Zhang Chaohui,Wen Shizhu
Strategic Study of CAE 2003, Volume 5, Issue 7, Pages 84-89
Thin film lubrication (TFL) has been well studied as a new lubrication regime since the 90s of last century. TFL is a transition lubrication regime between elastohydrodynamic lubrication (EHL) and boundary lubrication (BL), which has specific lubrication features. The present paper reviewed the advancement of researches of TFL, which involves the origin of the TFL concept, advancement of measuring technique, TFL's film-forming features, investigation on its mechanism, and computation theories.
Keywords： thin film lubrication ordered film film thickness measurement microstructure
Title Author Date Type Operation
Comprehensive evaluation factor of optoelectronic properties for transparent conductive metallic mesh films
Yilei Zhang, Jinxuan Cao, Zhengang Lu, Heyan Wang, Jiubin Tan,luzhengang@hit.edu.cn
Journal Article
Transformation of Fibrous Membranes from Opaque to Transparent Under Mechanical Pressing
Chao Wang, Jing Zhao, Liu Liu, Peng Zhang, Xianfeng Wang, Jianyong Yu, Bin Ding
Journal Article
From resource sharing to service sharing: opportunities and challenges of transparent computing
Zhang Yaoxue,Zhou Yuezhi
Journal Article
Highly Conductive Proton Selectivity Membrane Enabled by Hollow Carbon Sieving Nanospheres for Energy Storage Devices
Kang Huang, Shuhao Lin, Yu Xia, Yongsheng Xia, Feiyan Mu, Yuqin Lu, Hongyan Cao, Yixing Wang, Weihong Xing, Zhi Xu
Journal Article
Research Progress of Hydrogen Separation Membrane
Luan Yongchao, Xiong Yalin, He Guangli, Liu Congmin, Li Shuai
Journal Article
The progress of membrane adsorption and absorption
Lin Ligang,Ye Hui,Zhao Lizhi,Ding Xiaoli,Zhang Yuzhong
Journal Article
Monitor of Water Transparency in the China Sea by Using Satellite Remote Sensing
He Xianqiang,Pang Delu,Huang Erhui,Zhao Yanling
Journal Article
The Basic Study for Quench Detection in Superconducting Electric Equipments
Yu Xiaoyan,Li Jingdong,Tang Yuejin
Journal Article
Preparation and performance of homogeneous cellulose forward osmosis membrane
Zhang Bingtao,Zhang Lin,Huang He,Hou Li’an
Journal Article
Research progress in biomimetic and bioinspired membranes
Peng Dongdong,He Mingrui,Yang Hao,Zhang Bei,Gao Boxin,Fan Lin,Ding He,Nan Yanhu,Pan Fusheng,Su Yanlei,Wu Hong,Jiang Zhongyi
Journal Article
Blockchain for Transparent Data Management Toward 6G
Xuemin (Sherman) Shen, Dongxiao Liu, Cheng Huang, Liang Xue, Han Yin, Weihua Zhuang, Rob Sun, Bidi Ying
Journal Article
Progress ofanti-fouling reverse osmosis/nanofiltration membrane
Qin Jiaxu,Zhang Lin,Hou Li´an
Journal Article
Design and Fabrication of Ceramic Catalytic Membrane Reactors for Green Chemical Engineering Applications
Guangru Zhang, Wanqin Jin, Nanping Xu
Journal Article
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