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Bio-inspired smart gating nanochannels based on polymer films

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Science China Chemistry 2011年第10期54卷 1537-1546页

作者： wen liping JIANG Lei Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beo'ing 100190 China

In this review we have summarized some recent results mainly reported by our group that focused on the development of smart gating nanochannels based on polymer films. These nanochannels were prepared using a track-etch process. The responsive materials/molecules and modification methods/techniques have also been demonstrated, from which we have obtained a series of smart gating nanochannels that can respond to single/dual external stimuli, e.g., pH, ion, temperature, light, and so on. These studies utilize responsive behaviors to regulate ionic transport properties inside a single nanochannel and demonstrate the fea-sibility of designing other smart nanodevices in the future.

关键词： bio-inspired smart gating stimuli-responsive nanochannel polymer films

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Construction of biomimetic smart nanochannels for confined water

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National Science Review 2014年第1期1卷 144-156页

作者： liping wen Lei Jiang Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry & Environment Beihang University

In this review,we focus on the conined water that exists in one-dimensional micro/nano composite structures,particularly inside biological *** these nanochannels as inspiration,we discuss a strategy for the design and construction of biomimetic smart *** features of the inner surfaces of a nanochannel’s wall have similar properties to living ***,the abiotic analogs have potential applications in,for example,sensing,energy conversion and iltering.

关键词： conined water micro/nano structures nanochannel

Biomimetic smart nanochannels for power harvesting

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Nano Research 2016年第1期9卷 59-71页

作者： Ganhua Xie liping wen Lei Jiang Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Laboratory of Bioinspired Smart Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China

With the increasing requirements of reliable and environmentally friendly energy resources, porous materials for sustainable energy conversion technologies have attracted intensive interest in the past decades. As an important block of porous materials, biomimetic smart nanochannels （BSN） have been developed rapidly into an attractive field for their well-tunable geometry and chemistry. With inspiration from nature, many works have been reported to utilize BSN to harvest clean energy. In this review, we summarize recent progress in the BSN for power harvesting from four parts of brief introduction of BSN, biological prototypes for power harvesting, BSN-based energy conversion, and conclusion and outlook. Overall, by learning from nature, exploiting new avenues and improving the performance of BSN, a number of exciting developments in the near future may be anticipated.

关键词： energy conversion biomimetic nanochannel photoelectric salinity gradient

Electrokinetic transport of nanoparticles in functional group modified nanopores

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Chinese Chemical Letters 2023年第6期34卷 512-516页

作者： Teng Zhou Xiaohan He Juncheng Zhao Liuyong Shi liping wen Mechanical and Electrical Engineering College Hainan UniversityHaikou 570228China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Nanopore detection is a hot issue in current *** of the challenges is how to slow down the transport velocity of nanoparticles in *** this paper,we propose a functional group modified *** means a polyelectrolyte brush layer is grafted on the surface of the nanopore to change the surface charge *** existing studies generally set the charge density of the brush layer to a fixed *** the contrary,in this paper,we consider an essential property of the brush layer:the volume charge density is adjustable with ***,the charge property of the brush layer will change with the local H+*** on this,we established a mathematical model to study the transport of nanoparticles in polyelectrolyte brush layer modified *** found that pH can effectively adjust the charge density and even the polarity of the brush layer.A larger pH can reduce the transport velocity of nanoparticles and improve the blockade degree of ion *** grafting density does not change the polarity of the brush *** larger the grafting density,the greater the charge density of the brush layer,and the blockade degree of ion current is also more *** polyelectrolyte brush layer modified nanopores in this paper can effectively reduce the nanoparticle transport velocity and retain the essential ion current characteristics,such as ion current blockade and enhancement.

关键词： Nanopore Polyelectrolyte brush layer Protonation and deprotonation reactions Velocity Ion current

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High-efficient energy saving processing of big data of communication under mobile cloud computing

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第4期10卷 96-106页

作者： Yazhen Liu Pengfei Fan Jiyang Zhu liping wen Xiongfei Fan Information Communication Operation and Maintenance Center Information and Communication Branch State Grid Inner Mongolia Eastern Electric Power Co. Ltd.HohhotInner Mongolia Autonomous Region 010020P.R.China Hohhot Power Supply Bureau Inner Mongolia Power(Group)Co.Ltd.HohhotInner Mongolia Autonomous Region 010020P.R.China Training Center Inner Mongolia Power(Group)Co.Ltd.HohhotInner Mongolia Autonomous Region 010020P.R.China

From 21st century,it is hard for traditional storage and algorithm to provide service with high quality because of big data of communication which grows ***,cloud computing technology with relatively low cost of hardware facilities is ***,to guarantee the quality of service in the situation of the rapid growth of data volume,the energy consumption cost of cloud computing begins to exceed the hardware *** order to solve the problems mentioned above,this study briefly introduced the virtual machine and its energy consumption model in the mobile cloud environment,introduced the basic principle of the virtual machine migration strategy based on the artificial bee colony algorithm and then simulated the performance of processing strategy to big data of communication based on artificial bee colony algorithm in mobile cloud computing environment by CloudSim3.0 software,which was compared with the performance of two algorithms,resource management(RM)and genetic algorithm(GA).The results showed that the power consumption of the migration strategy based on the artificial bee colony algorithm was lower than the other two strategies,and there were fewer failed virtual machines under the same number of requests,which meant that the service quality was higher.

关键词： Mobile cloud computing big data processing artificial bee colony algorithm energy saving

Redox switch of ionic transport in conductive polypyrrole-engineered unipolar nanofluidic diodes

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Nano Research 2017年第11期10卷 3715-3725页

作者： Qianqian Zhang Zhen Zhang Hangjian Zhou Zhiqiang Xie liping wen Zhaoyue Liu Jin Zhai Xungang Diao Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bio-inspired Energy Materials and Devices School of Chemistry and Environment Beihang University Beijing 100191 China School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China Beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Laboratory of Bioinspired Smart Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China

Controlling ion transport in nanoconfined spaces is a key task for the creation of smart nanofluidic *** this work,redox-active polypyrrole （PPy） polymers are introduced into anodic aluminum oxide （AAO） nanochannels to form smart unipolar nanofluidic diodes （UNDs） for the first *** ionic transport behavior of the present polypyrrole-engineered UNDs can be controlled through the redox reactions of *** an applied oxidation potential,conductive PPy exhibits several redox states carrying different charges,following the formation of polarons and bipolarons with different oxidation *** with the asymmetric distribution of PPy in the AAO nanochannels,the UNDs investigated here exhibit redox-switchable ion rectification and ion-gating *** influence of the charge asymmetry of the UNDs on their ionic transport behavior is assessed by precisely controlling the length of oxidized PPy segments in the AAO nanochannels and by carrying out theoretical simulations based on the Poisson and Nernst-Planck （PNP） equations.

关键词： redox switch polypyrrole nanofluidic diodes ion rectification ion gating

A promising solution for highly reversible zinc metal anode chemistry:Functional gradient interphase

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Nano Research Energy 2024年第2期3卷 3-6页

作者： Xiaofeng He Xiang-Yu Kong liping wen CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Rechargeable zinc(Zn)metal batteries have long been plagued by dendrite growth and parasitic reactions due to the absence of a stable Zn-ion conductive solid-electrolyte interphase(SEI).Although the current strategies assist in suppressing dendritic Zn growth,it is still a challenge to obtain the operation-stability of Zn anode with high Coulombic efficiency(CE)required to implement a sustainable and long-cycling life of Zn metal *** this perspective,we summarize the advantages of the functional gradient interphase(FGI)and try to fundamentally understand the transport behaviors of Zn ions,based on recently an article understanding Zn *** correlation between the function-orientated design of gradient interphase and key challenges of Zn metal anodes in accelerating Zn2+transport kinetics,improving electrode reversibility,and inhibiting Zn dendrite growth and side reactions was particularly ***,the rational design and innovative directions are provided for the development and application of functional gradient interphase in rechargeable Zn metal battery systems.

关键词： zinc metal battery dendrite gradient solid-electrolyte interphase energy storage

A universal functionalization strategy for biomimetic nanochannel via external electric field assisted non-covalent interaction

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Nano Research 2021年第5期14卷 1421-1428页

作者： Yunfei Teng Xiang-Yu Kong Pei Liu Yongchao Qian Yuhao Hu Lin Fu Weiwen Xin Lei Jiang liping wen CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China School of Future Technology University of Chinese Academy of SciencesBeijing100049China

Biological ion channels, as fundamental units participating in various daily behaviors with incredible mass transportation and signal transmission, triggered booming researches on manufacturing their artificial prototypes. Biomimetic ion channel with the nanometer scale for smart responding functions has been successfully realized in sorts of materials by employing state-of-art nanotechnology. Ion track-etching technology, as crucial branches of fabricating solid-state nanochannels, exhibits outstanding advantages, such as easy fabrication, low cost, and high customization. To endow the nanochannel with smart responsibility, various modification methods are developed, including chemical grafting, non-covalent adsorption, and electrochemical deposition, enriching the reservoir of accessible stimuli-responses combinations, whereas were limited by their relatively lengthy and complex procedure. Here, based on the electric field induced self-assembly of polyelectrolytes, a universal customizable modifying strategy has been proposed, which exhibits superiorities in their functionalization with convenience and compatibility. By using this protocol, the channels’ ionic transport behaviors could be easily tuned, and even the specific ionic or molecular responding could be realized with superior performance. This strategy surely accelerates the nanochannels functionalization into fast preparing, high efficiency, and large-scale application scenarios.

关键词： biomimetic ionic nanofluidics ionic rectification solid-state nanopore nanochannel

Robust sulfonated poly(ether ether ketone) nanochannels for high-performance osmotic energy conversion

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National Science Review 2020年第8期7卷 1349-1359页

作者： Yuanyuan Zhao Jin Wang Xiang-Yu Kong Weiwen Xin Teng Zhou Yongchao Qian Linsen Yang Jinhui Pang Lei Jiang liping wen CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Super Engineering Plastic of Ministry of Education Jilin University School of Future Technology University of Chinese Academy of Sciences Mechanical and Electrical Engineering College Hainan University School of Science Northwestern Polytechnical University

The membrane-based reverse electrodialysis(RED) technique has a fundamental role in harvesting clean and sustainable osmotic energy existing in the salinity gradient. However, the current designs of membranes cannot cope with the high output power density and robustness. Here, we construct a sulfonated poly(ether ether ketone)(SPEEK) nanochannel membrane with numerous nanochannels for a membrane-based osmotic power generator. The parallel nanochannels with high space charges show excellent cation-selectivity, which could further be improved by adjusting the length and charge density of nanochannels. Based on numerical simulation, the system with space charge shows better conductivity and selectivity than those of a surface-charged nanochannel. The output power density of our proposed membrane-based device reaches up to 5.8 W/m2by mixing artificial seawater and river water. Additionally,the SPEEK membranes exhibit good mechanical properties, endowing the possibility of creating a high-endurance scale-up membrane-based generator system. We believe that this work provides useful insights into material design and fluid transport for the power generator in osmotic energy conversion.

关键词： SPEEK membrane nanochannel ion-selectivity salinity gradient power generation