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Electrical characteristics and detailed interfacial structures of Ag/Ni metallization on polycrystalline thermoelectric SnSe

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Journal of Materials Science & Technology 2019年第5期35卷 711-718页

作者： Yeongseon Kim Younghwan Jin Giwan Yoon In Chung Hana Yoon Chung-yul Yoo Sang Hyun Park Separation and Conversion Materials Laboratory Korea Institute of Energy Research 152 Gajeong-ro Yuseong-gu Daejeon 34129 Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34142 Republic of Korea Department of Physics Chungnam National University 99 Daehak-ro Yuseong-gu Daejeon 34134 Republic of Korea School of Chemical and Biological Engineering Seoul National University 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea

SnSe is a promising thermoelectric material with a high figure of merit in single crystal form, which has stimulated continuous research on polycrystalline SnSe. In this study, we investigated a metallization techniques for polycrystalline SnSe to achieve highly efficient and practical SnSe thermoelectric modules. The Ag/Ni metallization layers were formed on pristine polycrystalline SnSe using various deposition technique: sputter coating Ni, powder Niand foil Ni by spark plasma sintering. Structural analysis demonstrated that the microstructure and con tact resistance could be different according to the metallization process, despite using the same metals. The Ag/Ni metallization layer using foil Ni acted as an effective diffusion barrier and minimized electrical contact resistance (2.3×10^-4Ωcm^2). A power loss in the thermoelectric module of only 5% was demonstrated using finite element simulation.

关键词： Thermoelectric Metallization Electric contact material Interface microstructure SnSe

Light People:*** Bowers spoke about silicon photonics

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Light(Science & Applications) 2022年第12期11卷 2843-2848页

作者： Chenzi Guo Yating wan Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina Integrated Photonics lab King Abdullah University of Science and TechnologyThuwalMakkah

Editorial Silicon photonics is advancing rapidly with many scientific and engineering advances and many new applications for *** highlight the topic,Light:Science&Applications invited John Bowers,director of the Institute for Energy Efficiency and distinguished professor from the University of California,Santa Barbara,to talk about the fundamentals and industries,and give a future perspective of silicon *** below is summarized from the video interview of *** original interview can be accessed in Supplementary video.

关键词： Efficiency interview photonics

Light People:*** May Lau,newly elected US NAE member in Hong Kong,talks about future of photonics and women in science

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Light(Science & Applications) 2024年第4期13卷 602-608页

作者： Yating wan Chenzi Guo Electrical and Computer Engineering the ComputerElectrical and Mathematical Sciences and Engineering DivisionKing Abdullah University of Science and Technology23955-6900 ThuwalSaudi Arabia Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina

Editorial Photonics technology remains a driving force in today’s scientific landscape,marked by continuous innovation and crossdisciplinary *** an enlighting conversation with Light:Science&Applications,*** May Lau,a pioneer in photonics research,shares her deep insights on the evolution of technologies of LEDs,lasers,challenges of hetero-epitaxy,and the future of micro-LEDs and quantum dot *** honored as a member of the US National Academy of Engineering(NAE)for her significant contributions to photonics and electronics using III-V semiconductors on silicon,*** stands out as the sole Hong Kong scholar inducted into the NAE this year,joining 114 new and 21 international *** this exclusive Light People interview,*** shares her journey as a pioneering woman in engineering,her commitment to mentorship and academia,and her perspective on advancing female representation in *** summary provided is distilled from ***’s thoughtful responses during the *** a deeper exploration of ***’s experiences and advice,the full interview is available in the Supplementary material.

关键词： interview lighting driving

Light people:*** Hu's adventure:from semiconductors to quantum-from industry to academia

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Light(Science & Applications) 2023年第8期12卷 1459-1466页

作者： Yating wan Chenzi Guo Integrated Photonics lab King Abdullah University of Science and TechnologyThuwalMakkah ProvinceSaudi Arabia Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina

Editorial As part of our Light People series,we are delighted to have invited *** Hu,a highly accomplished scientist from Harvard University,to share with us her personal ***'s remarkable contributions in both academia and industry have taken her from industry giants to academia's most prestigious institutions,traversing various research frontiers that have played a critical role in the ongoing digital *** this interview,we aim to offer the Light community valuable insights into nanophotonics,quantum engineering,and ***'s research methodology and life philosophy,while also celebrating her outstanding achievements as a female role ***,our goal is to inspire more women to pursue careers in this important and rapidly expanding field,which has a profound impact on all sectors of *** following is a summary of an interview with Professor Evelyn Hu,available in the Supplementary Information.

关键词： interview frontier industry

STABLE AND ROBUST RECOVERY OF APPROXIMATELY k-SPARSE SIGNALS WITH PARTIAL SUPPORT INFORMATION IN NOISE SETTINGS VIA WEIGHTED ℓ_(p)(0

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Journal of Computational Mathematics 2023年第6期41卷 1137-1170页

作者： Biao Du Anhua wan School of Mathematics Sun Yat-sen UniversityGuangzhou 510275China

In the existing work,the recovery of strictly k-sparse signals with partial support information was derived in theℓ2 bounded noise *** this paper,the recovery of approximately k-sparse signals with partial support inf... 详细信息

关键词： Signal recovery weightedℓp minimization Approximately k-sparse signal Noise setting Reconstruction error bound Restricted isometry property

Study on the Two-Sides Matching between Multiple Rovers and Multiple Orbiters in Mars Relay Communications

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China Communications 2020年第7期17卷 80-93页

作者： Peng wan Yafeng Zhan Space center Tsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology(BNRist) Beijing 100084China

In Mars relay communications,if multiple rovers and multiple orbiters are visible with each other at the same time in certain contact,there are not only issues concerned with the multiple rovers’access to single orbiter,but also the issues concerned with the optimal access orbiter selection for each rover,which is a complex multi-objective decision-making problem relating to the resource allocation optimizations in deep-space *** this paper,the two-sides matching between multiple rovers and multiple orbiters in Mars relay communications is proposed based on the access preferences,taking the two-sides combined fitness of preferences and the single-side evaluation equilibrium as the optimization objectives,which utilizes the parallel capsule operations architecture encapsulated with several one-to-many two-sides matching algorithms to obtain stable multiple access matching *** results show that,our method performs better than the CCSDS Proximity-1 protocols,and could achieve the effective utilization of deep space communication network resources.

关键词： matching utilize concerned

Evolution of soil DOM during thermal remediation below 100℃:concentration,spectral characteristics and complexation ability

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 31-41页

作者： wan Huang Ziren wan Di Zheng Lifeng Cao Guanghe Li Fang Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control State Environment Protection Key Laboratory of Microorganism Application and Risk ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China National Engineering Laboratory for Site Remediation Technologies Beijing 100015China

The impact of thermal remediation on soil function has drawn increasing *** far,as the most active fraction of soil organic matter,the evolution of dissolved organic matter(DOM)during the thermal remediation lacks in-depth investigation,especially for the temperatures value below 100℃.In this study,a series of soil thermal treatment experiments was conducted at 30,60,and 90℃ during a 90-d period,where soil DOM concentration increased with heating temperature and *** molecular weight,functional groups content and aromaticity of DOM all decreased during the thermal *** excitation-emission matrices(EEM)results suggested that humic acid-like substances transformed into fulvic acid-like substances(FIII/FV increased from 0.27 to 0.44)during the heating process,and five DOM components were further identified by *** change of DOM structures and components indicated the decline of DOM stability and hydrophilicity,and can potentially change the bioavailability and *** temperature also resulted in the decline of DOM complexation ability,which may be caused by the loss of binding sites due to the decrease of polar function groups,aromatic structures and hydrophilic *** study provides valuable information about the evolution of DOM during thermal remediation,which would potentially change the fate of metal ions and the effectiveness of the post-treatment technologies in the treated region.

关键词： Thermal remediation below 100℃ Heating temperature Soil DOM concentration DOM spectral characteristics Excitation-emission matrices(EEM) Complexation ability

Local Energy and Planned Ramping Product Joint Market Based on a Distributed Optimization Method

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CSEE Journal of Power and Energy Systems 2021年第6期7卷 1357-1368页

作者： Zhong Zhang Furong Li sung-Won Park sung-Yong Son Dalian University of Technology DalianChina Department of Electronic and Electrical Engineering University of BathBathU.K. the University of Bath BathU.K. the Department of Electrical and Electronic Engineering Youngsan UniversitySouth Korea Gachon University SeoulSouth Korea

High penetration of renewable energy generation(REG)in the distribution system increases both the power uncertainty at a given interval and the power variation between two *** markets addressing power uncertainty have been widely ***,there is a lack of market mechanisms regarding the power variation of the load and *** paper thus defines a planned ramping(PR)product to follow the net load variation and extends the local energy market to include the trading of PR *** are economically compensated for their PR *** models of dispatchable generators and flexible load aggregators in the joint market are *** solve the market problem in polynomial time,a distributed market clearing method is developed based on the ADMM *** joint market is tested on a modified IEEE 33-bus *** verifies that introducing the PR market can encourage flexible loads to provide more PR service to accommodate the net load *** such,the ramping cost of dispatchable generators is reduced by 29.09%in the test *** planned energy curtailment from REG is also *** computational efficiency of the proposed distributed clearing method is validated by comparing it with a centralized method.

关键词： Distributed market clearing flexible load aggregator local electricity market planned ramping product renewable energy generation

A Numerical Investigation of the Thermal Performances of an Array of Heat Pipes for Battery Thermal Management

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Fluid Dynamics & Materials Processing 2019年第4期15卷 343-356页

作者： Chaoyi wan School of Automobile and Traffic Engineering Jiangsu University of TechnologyChangzhou213001China

A comparative numerical study has been conducted on the thermal performance of a heat pipe cooling system considering several influential factors such as the coolant flow rate,the coolant inlet temperature,and the input power.A comparison between numerical data and results available in the literature has demonstrated that our numerical procedure could successfully predict the heat transfer performance of the considered heat pipe cooling system for a *** indicators such as temperature,heat flux,and pressure loss were extracted to describe the characteristics of such a *** the basis of the distributions of the temperature ratio of the battery surface,together with the heat flux and the streamlines around the heat pipe condenser,we conclude that the low disturbance of the coolant is the cause of the temperature gradient along the fluid flow direction.

关键词： Battery thermal management heat pipe numerical model temperature difference