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Bioinspired Nanostructured Superwetting Thin-Films in a Self-supported form Enabled“Miniature Umbrella”for Weather Monitoring and Water Rescue

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Nano-Micro Letters 2022年第2期14卷 174-189页

作者： Shan Li Peng Xiao wei Zhou Yun Liang shiao-wei kuo Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China School of Chemical Sciences University of Chinese Academy of Sciences19A Yuquan RoadBeijing 100049People’s Republic of China Department of Material and Optoelectronic Science National Sun Yat-Sen UniversityKaohsiung 804TaiwanPeople’s Republic of China

Two-dimensional(2D)soft materials,especially in their self-supported forms,demonstrate attractive properties to realize biomimetic morphing and ultrasensitive *** extensive efforts on design of self-supported functional membranes and integrated systems have been devoted,there still remains an unexplored regime of the combination of mechanical,electrical and surface wetting properties for specific ***,we report a self-supported film featured with elastic,thin,conductive and superhydrophobic *** a well-defined surface modification strategy,the surface wettability and mechanical sensing can be effectively *** resulted film can function as a smart umbrella to achieve real-time simulated raining with diverse frequencies and *** addition,the integrated umbrella can even response sensitively to the sunlight and demonstrate a positively correlation of current signals with the intensity of sun ***,the superhydrophobic umbrella can be further employed to realize water rescue,which can take the underwater object onto water surface,load and rapidly transport the considerable *** importantly,the whole process of loaded objects and water flow velocity can be precisely *** self-supported smart umbrella can effectively monitor the weather and realize a smart water rescue,demonstrating significant potentials in multifunctional sensing and directional actuation in the presence of water.

关键词： Self-supported Superhydrophobic thin films Multifunctional sensing Water rescue

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Bioinspired Adaptive,Elastic,and Conductive Graphene Structured Thin-Films Achieving High-Efficiency Underwater Detection and Vibration Perception

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Nano-Micro Letters 2022年第4期14卷 129-141页

作者： Qiling Wang Peng Xiao wei Zhou Yun Liang Guangqiang Yin Qiu Yang shiao-wei kuo Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesZhongguan West Road 1219Ningbo 315201People’s Republic of China School of Chemical Sciences University of Chinese Academy of Sciences19A Yuquan RoadBeijing 100049People’s Republic of China Ningbo New Material Testing and Evaluation Center Co. LtdNingbo 315000People’s Republic of China Department of Material and Optoelectronic Science Center of Crystal ResearchNational Sun Yat-Sen UniversityKaohsiung 804TaiwanPeople’s Republic of China

Underwater exploration has been an attractive topic for understanding the very nature of the lakes and even deep *** recent years,extensive efforts have been devoted to developing functional materials and their integrated devices for underwater information ***,there still remains a great challenge for water depth detection and vibration monitoring in a high-efficient,controllable,and scalable *** by the lateral line of fish that can sensitively sense the water depth and environmental stimuli,an ultrathin,elastic,and adaptive underwater sensor based on Ecoflex matrix with embedded assembled graphene sheets is *** graphene structured thin film is endowed with favourable adaptive and morphable features,which can conformally adhere to the structural surface and transform to a bulged state driven by water *** to the introduction of the graphene-based layer,the integrated sensing system can actively detect the water depth with a wide range of 0.3-1.8 ***,similar to the fish,the mechanical stimuli from land(***,stomping)and water(*** blowing,raining,fishing)can also be sensitively captured in real *** graphene structured thin-film system is expected to demonstrate significant potentials in underwater monitoring,communication,and risk avoidance.

关键词： Janus film Water depth detection Vibration perception

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Wet‑Spinning Knittable Hygroscopic Organogel Fibers Toward Moisture‑Capture‑Enabled Multifunctional Devices

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Advanced Fiber Materials 2023年第2期5卷 588-602页

作者： Chang Zhang Peng Xiao Dong Zhang Feng Ni Jincui Gu Qingquan Liu shiao‑wei kuo Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China School of Chemical Sciences University of Chinese Academy of ScienceBeijing 100049People’s Republic of China Department of Chemical Biomolecular and Corrosion EngineeringThe University of AkronAkron 44325USA Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China Department of Material and Optoelectronic Science Center of Crystal ResearchNational Sun YatSen UniversityKaohsiung 804TaiwanChina

Atmospheric moisture exploitation is emerging as a promising alternative to relieve the shortage of freshwater and *** to exploit hygroscopic materials featuring flexibility,programmability,and accessibility are crucial to portable and adaptable ***,current two-dimensional(2D)or three-dimensional(3D)-based hygroscopic materials are dif-ficult to adapt to diverse irregular surfaces and meet breathability,which severely hinders their wide applications in wearable and programmable ***,hygroscopic organogel fibers(HOGFs)were designed via a wet-spinning *** achieved fibers were composed of the hydrophilic polymeric network,hygroscopic solvent,and photothermal/antibacterial Ag nanoparticles(AgNPs),enabling hygroscopic capacity,photothermal conversion,and *** to the good knittable feature,the HOGFs can be readily woven to adjusted 2D textiles to function as an efficient self-sustained solar evaporator of 4-layer woven HOGF device with a saturated moisture capacity of 1.63 kg m^(-2) and water-releasing rate of 1.46 kg m^(-2) h^(-1).Furthermore,the 2D textile can be applied as a wearable dehumidification device to efficiently remove the evaporative moisture from human skin to maintain a comfortable *** can reduce the humidity from 90 to 33.4%within 12.5 *** addition,the introduction of AgNPs can also endow the HOGFs with antibacterial features,demonstrat-ing significant potential in personal healthcare.

关键词： Hygroscopic organogel fibers Knittable and wearable Atmospheric moisture sorption Solar-enabled evaporation Antibacterial dehumidification device

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From Random Coil Polymers to Helical Structures Induced by Carbon Nanotubes and Supramolecular Interactions

From Random Coil Polymers to Helical Structures Induced by C...

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2014年两岸三地高分子液晶态与超分子有序结构学术研讨...

作者： shiao-wei kuo Department of Materials and Optoelectronic Science Center for Nanoscience and NanotechnologyNational Sun Yat-Sen University

We report a simple method for the preparation of double helical structures through a series of achiral random and block copolymers poly(styrene‐co‐4‐vinylbenzyl triazolylmethyl methylthymine)(PS‐co‐PVBT)with various T units on the side chains through click reactions of poly(styrene‐co‐4‐vinylbenzyl azide)(PS‐co‐PVBN3)with propargyl‐thymine(PT)and then also

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调控氢键作用力在多组分嵌段共聚物共混体系中的自组装结构

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高分子学报 2018年第8期28卷 1016-1032页

作者：林瑞崇郭绍伟台湾中山大学材料与光电科学学系高雄80424

调控嵌段共聚物共混体系的氢键作用力可应用在光学、电性及生物医用领域,因此吸引了高分子科学家广泛的研究兴趣,它提供了制备新型高分子材料(包含可调性及响应性的功能)的方法.在此篇综述中,我们整理了各种氢键作用力调控嵌段共聚物共... 详细信息

调控嵌段共聚物共混体系的氢键作用力可应用在光学、电性及生物医用领域,因此吸引了高分子科学家广泛的研究兴趣,它提供了制备新型高分子材料(包含可调性及响应性的功能)的方法.在此篇综述中,我们整理了各种氢键作用力调控嵌段共聚物共混体系(如嵌段共聚物/低分子量化合物、嵌段共聚物/均聚物及嵌段共聚物/嵌段共聚物混合体系)在固态及液态的自组装行为.

关键词：氢键作用力嵌段共聚物共混体系自组装结构

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A highly reliable encoding and decoding communication framework based on semantic information

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Digital Communications and Networks 2024年第3期10卷 509-518页

作者： Yichi Zhang Haitao Zhao kuo Cao Li Zhou Zhe Wang Yueling Liu Jibo wei College of Electronic Science and Technology National University of Defense TechnologyChangsha 410073China

Increasing research has focused on semantic communication,the goal of which is to convey accurately the meaning instead of transmitting symbols from the sender to the *** this paper,we design a novel encoding and decoding semantic communication framework,which adopts the semantic information and the contextual correlations between items to optimize the performance of a communication system over various *** the sender side,the average semantic loss caused by the wrong detection is defined,and a semantic source encoding strategy is developed to minimize the average semantic *** further improve communication reliability,a decoding strategy that utilizes the semantic and the context information to recover messages is proposed in the *** simulation results validate the superior performance of our strategies over state-of-the-art semantic coding and decoding policies on different communication channels.

关键词： Semantic information Semantic encoding method Context-based decoding method

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Combinations of electron and proton donors in transition-metal complex mediated nitrogen reduction reactions

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Science China Chemistry 2024年第7期67卷 2136-2154页

作者： Delong Han Li Yang Hao Huang Priyanka Chakraborty Shashikant U.Dighe kuo-wei Huang KAUST Catalysis Center and Division of Physical Science and Engineering King Abdullah University of Science and TechnologyThuwal 23955Saudi Arabia Agency for Science Technologyand ResearchInstitute of Materials Research and Engineering and Institute of Sustainability for ChemicalsEnergy and EnvironmentSingapore 138634Singapore

Nitrogen fixation is a complex process involving the transfer of six electrons and *** from the conventional Haber-Bosch process,which relies on hydrogen(H_(2))to provide both electrons and protons to reduce nitrogen(N_(2)),homogeneous transition metal complex-catalyzed N_(2)reduction reactions(NRR)employ an array of electron and proton donors or even electron donors combined with *** the synthesis of diverse catalytic progress,the categories of donors have seen rapid ***,existing literature only provides summaries regarding the metal,ligands,and *** the significance of electron and proton donor combinations in nitrogen reduction reactions,no literature has thoroughly reviewed this ***,we hereby compiled a comprehensive list of commonly used reagents in N_(2)reduction and classified them according to their specific donor *** review presents clear and organized information about these combinations,along with a summary of their general performance trend in NRR with related ***,we conclude the discussion by highlighting key points for researchers to consider when selecting catalysts and donor combinations,with the ultimate goal of advancing the field of nitrogen fixation.

关键词： dinitrogen reduction reaction reducing donor combination transition metal complexes homogeneous catalysis

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Extended context-based semantic communication system for text transmission

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Digital Communications and Networks 2024年第3期10卷 568-576页

作者： Yueling Liu Shengteng Jiang Yichi Zhang kuo Cao Li Zhou Boon-Chong Seet Haitao Zhao Jibo wei College of Electronic Science and Technology National University of Defense TechnologyChangsha410073China Department of Electrical and Electronic Engineering Auckland University of TechnologyAucklandNew Zealand

Context information is significant for semantic extraction and recovery of messages in semantic ***,context information is not fully utilized in the existing semantic communication systems since re-lationships between sentences are often *** this paper,we propose an Extended Context-based Semantic Communication(ECSC)system for text transmission,in which context information within and between sentences is explored for semantic representation and *** the encoder,self-attention and segment-level relative attention are used to extract context information within and between sentences,*** addition,a gate mechanism is adopted at the encoder to incorporate the context information from different *** the decoder,Transformer-XL is introduced to obtain more semantic information from the historical communication processes for semantic *** results show the effectiveness of our proposed model in improving the semantic accuracy between transmitted and recovered messages under various channel conditions.

关键词： semantic communication extended context Transformer-XL

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Highly Accurate Golden Section Search Algorithms and Fictitious Time Integration Method for Solving Nonlinear Eigenvalue Problems

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 1317-1335页

作者： Chein-Shan Liu Jian-Hung Shen Chung-Lun kuo Yung-wei Chen Center of Excellence for Ocean Engineering Taiwan Ocean UniversityKeelung202301TaiwanChina Department of Marine Engineering Taiwan Ocean UniversityKeelung202301TaiwanChina

This study sets up two new merit functions,which are minimized for the detection of real eigenvalue and complex eigenvalue to address nonlinear eigenvalue *** each eigen-parameter the vector variable is solved from a nonhomogeneous linear system obtained by reducing the number of eigen-equation one less,where one of the nonzero components of the eigenvector is normalized to the unit and moves the column containing that component to the right-hand side as a nonzero input vector.1D and 2D golden section search algorithms are employed to minimize the merit functions to locate real and complex ***,the real and complex eigenvectors can be computed very accurately.A simpler approach to the nonlinear eigenvalue problems is proposed,which implements a normalization condition for the uniqueness of the eigenvector into the eigenequation *** real eigenvalues can be computed by the fictitious time integration method(FTIM),which saves computational costs compared to the one-dimensional golden section search algorithm(1D GSSA).The simpler method is also combined with the Newton iterationmethod,which is convergent very *** the proposed methods are easily programmed to compute the eigenvalue and eigenvector with high accuracy and efficiency.

关键词： Nonlinear eigenvalue problem quadratic eigenvalue problem two new merit functions golden section search algorithm fictitious time integration method

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Constrained reinforcement learning with statewise projection: a control barrier function approach

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Science China(Information Sciences) 2024年第3期67卷 136-154页

作者： Xinze JIN kuo LI Qingshan JIA Department of Automation Tsinghua University

Safety is a critical issue for reinforcement learning(RL), as it may be risky for some actual applications if the learning process involves unsafe exploration. Instead of formulating constraints as expectationbased in constrained RL, considering statewise safety in constrained RL is more meaningful. This work aims to address the issue of safe projection in RL by introducing a control barrier function that inherently learns a safe policy through a set certificate. We seek to analyze some theoretical properties of safe projection in the learning process, including convergence and performance bound, and extend the discussion into ensembles and guided controllers. Moreover, we approach analytical solutions for deterministic and stochastic system dynamics. Experimental results in different tasks show that the proposed method achieves better effects in terms of both performance and safety.

关键词： reinforcement learning safe projection control barrier function

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