Engineered Science最新文献_第6页

Anisotropic Thermal Transport in Chalcogenide Perovskite CaZrS3 from Machine Learning Interatomic Potential 硫系钙钛矿CaZrS3的各向异性热输运研究

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es952

Yinglei Wang, Jialin Tang, Guotai Li, Jiongzhi Zheng, Xiaohan Song, Qi Wang, Zheng Cui, Lin Cheng, Ruiqiang Guo

{"title":"Anisotropic Thermal Transport in Chalcogenide Perovskite CaZrS3 from Machine Learning Interatomic Potential","authors":"Yinglei Wang, Jialin Tang, Guotai Li, Jiongzhi Zheng, Xiaohan Song, Qi Wang, Zheng Cui, Lin Cheng, Ruiqiang Guo","doi":"10.30919/es952","DOIUrl":"https://doi.org/10.30919/es952","url":null,"abstract":"Chalcogenide perovskites are being actively considered for photovoltaic, optoelectronic, and thermoelectric applications due to their high carrier mobility, strong light absorption, long-term stability, and environment-friendliness. For all these applications, thermal properties play a key role in determining the performance and lifetime of perovskite systems. In this work, we have developed a machine-learning Gaussian approximation potential to study the structural and thermal transport properties of chalcogenide perovskite CaZrS 3 . We show that the GAP achieves a DFT-level accuracy in describing both cubic and orthorhombic CaZrS 3 , with 2-4 orders of magnitude reduced computational cost. Specifically, we applied the GAP to predict the lattice thermal conductivities ( κ L ) and phonon properties of orthorhombic CaZrS 3 from 200 to 900 K by considering four-phonon processes. Compared to its counterpart CaZrSe 3 , the CaZrS 3 exhibits comparably low but relatively more anisotropic κ L mainly due to its strong anharmonicity and anisotropic group velocities. Specifically, its thermal conductivities along the a-and c-axis are close and notably lower than that along the b -axis. Optical phonons contribute as high as nearly half of the total thermal conductivity throughout the entire temperature range. Particularly, we observe non-*","PeriodicalId":36059,"journal":{"name":"Engineered Science","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73499664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of Mission-Oriented Unmanned Aerial Vehicle Networks: A Comprehensive Review 面向任务的无人机网络发展综述

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es895

Hemant Kumar Saini, K. Jain

引用次数: 1

Iron-based soft magnetic materials fabricated by laser additive manufacturing 激光增材制造铁基软磁材料

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es8d809

Hengtong Wang, Wenlai Feng, Dong Liu, Guodong Zhang, Yao Liu, Jun Wang, Liang Zou

引用次数: 1

Piezoelectrets from Cyclic Olefin Copolymers with Different Mechanical and Thermomechanical Properties: A Comparative Study 具有不同机械和热机械性能的环烯烃共聚物压电体的比较研究

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es8d810

Hui Wang, Xiaolin Wang, Yan Li, Zhe Liu, M. F. Ahmed, Xiaoqing Zhang, C. Zeng

{"title":"Piezoelectrets from Cyclic Olefin Copolymers with Different Mechanical and Thermomechanical Properties: A Comparative Study","authors":"Hui Wang, Xiaolin Wang, Yan Li, Zhe Liu, M. F. Ahmed, Xiaoqing Zhang, C. Zeng","doi":"10.30919/es8d810","DOIUrl":"https://doi.org/10.30919/es8d810","url":null,"abstract":"This paper reports on the fabrication and characterization of piezoelectrets using three types of cyclic olefin copolymers (COCs). The COCs (COC 6017, 6013, 8007) differ considerably in their glass transition temperatures, thermal stability, and mechanical flexibility. The piezoelectrets were fabricated using a carbon dioxide-assisted assembly of a multi-layer non-overlapping structure followed by contact charging. The piezoelectricity was characterized by quasi-static piezoelectric coefficients. Piezoelectrets from the three COCs all showed excellent piezoelectric activity with the quasi-static piezoelectric coefficient reaching up to 1600 pC/N. The thermal stability of the three types of piezoelectret was investigated by thermally stimulated discharge (TSD). The discharge peaks for 6017, 6013, and 8007 were found to be around 210 o C, 180 o C, and 130 o C, respectively. The electrical and electromechanical characteristics of the piezoelectrets were further probed by electric hysteresis loop measurements, butterfly loop measurements, and dielectric resonance spectra for all three types of materials. The study provided the first systematic and comprehensive investigation of the potential of the family of COC copolymers in piezoelectric applications, broadening the materials choices and design space of porous polymer-based piezoelectric materials.","PeriodicalId":36059,"journal":{"name":"Engineered Science","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85737800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Density Functional Theory based Study of the Interaction Energy Between Ethyl Tin (IV) Chloride and Derivatives of Pyridine 基于密度泛函理论的乙基氯化锡与吡啶衍生物相互作用能研究

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es8d872

R. Sharma, Manendra S. Chauhan

引用次数: 0

Experimental Evaluation of a Vapor Compression Cycle Integrated With a Phase Change Material Storage Tank for Peak Load Shaving 结合相变材料储罐的蒸汽压缩循环调峰试验评价

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es8d870

Alireza Riahi, M. Shafii

引用次数: 2

Synthesis of Ester Derivatives of Catechin Isolated from Uncaria gambir and their Anticancer Activity 钩藤儿茶素酯类衍生物的合成及其抗癌活性研究

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es997

Muhammad Ikhlas Abdjan, Mila Rosyda, Nanik Siti Aminah, Alfinda Novi Kristanti, Imam Siswanto, Waseem Shehzad, Hina Siddiqui, Andika Pramudya Wardana, Indriani Indriani, Mirza Ardella Saputra, Yoshiaki Takaya

引用次数: 0

Ambient Temperature Synthesis of Ultraviolet Emissive Carbon Quantum Dots from Kakadu Plum 卡卡杜梅紫外发射碳量子点的室温合成

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es986

Jamaan E. Alassafi, Yas Al-Hadeethi, Mohammed Saleh Aida, Samar Fayez Al-Shehri, Mingguang Chen

引用次数: 0

Modeling Solubility of Acetylsalicylic Acid in Aspen Plus 乙酰水杨酸在杨树中的溶解度模拟

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es987

Makpal Rakhatkyzy, Botakoz Suleimenova, Minavar Shaimardan, Dhawal Shah, Nuraje Nurxat

引用次数: 0

Thermal Management of Prismatic LiFePO4 Battery Module with Inversed-Zigzag Channeled Ferrofluid Flows 具有反之字形通道铁磁流体流动的棱镜型LiFePO4电池模块的热管理

Engineered Science Pub Date : 2023-01-01 DOI: 10.30919/es1017

Sarawut Sirikasemsuk, Ponthep Vengsungnle, Smith Eiamsa-ard, Paisarn Naphon

引用次数: 0