AIP Advances最新文献_第2页

Decomposition characteristics and influencing mechanisms of C4F7N/CO2 gas with different metal materials C4F7N/CO2 气体与不同金属材料的分解特性及影响机理

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-18 DOI: 10.1063/5.0214100

Yuan Yang, Keli Gao, Hao Wang, Shuai Yuan, Jinchao Du, Yansong Ji, Dehui Fu, Yin Huang, Guangkai Cui

{"title":"Decomposition characteristics and influencing mechanisms of C4F7N/CO2 gas with different metal materials","authors":"Yuan Yang, Keli Gao, Hao Wang, Shuai Yuan, Jinchao Du, Yansong Ji, Dehui Fu, Yin Huang, Guangkai Cui","doi":"10.1063/5.0214100","DOIUrl":"https://doi.org/10.1063/5.0214100","url":null,"abstract":"C4F7N/CO2 gas mixture, as the main new environmentally friendly gas insulation medium, is now being widely used in the ring network switchgear and other gas electrical equipment. In this paper, a test platform was constructed to simulate partial discharge in a gas medium, the decomposition characteristics of the C4F7N/CO2 gas mixture during suspended potential discharge were studied under four different metal electrode materials: stainless steel, purple copper, tungsten copper, and aluminum alloy. The results show that the main decomposition products of the C4F7N/CO2 gas mixture during suspended discharge are CO, CF4, C4F8, C3F8, C3F6, CF3CN, and C2F4 gases, which are independent of the metal material. On the whole, when the metal electrode material is stainless steel, the highest amount of decomposition products are generated from the C4F7N/CO2 gas mixture; when the metal electrode material is aluminum alloy, the amount of decomposition products produced by C4F7N/CO2 gas mixture is the least, and the content difference of some decomposition products between these two metal materials is as high as 70%. The decomposition products of the C4F7N/CO2 gas mixture decreased gradually with the increase in the gas pressure. Finally, the influence mechanism of different metal materials on the decomposition process of the C4F7N/CO2 gas mixture was analyzed from the microscopic perspectives of charge transfer between gas molecules and molecular structural characteristics. In general, the research results can provide technical reference for the design, selection, and optimization of environmental protection gas insulation equipment.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"192 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bridgeless modified Cuk–SEPIC power factor correction converter for E-bicycle applications 用于电动自行车应用的无桥改进型 Cuk-SEPIC 功率因数校正转换器

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-18 DOI: 10.1063/5.0229333

Shunmathi M., Julius Fusic S., Shanmugavel Rajesh, Jayant Giri, Sathish T., Abdullah Alarifi, S. M. Mozammil Hasnain

引用次数: 0

Leakage current in GaN-on-GaN vertical GaN SBDs grown by HVPE on native GaN substrates 在原生氮化镓衬底上通过 HVPE 生长的氮化镓基垂直氮化镓 SBD 中的泄漏电流

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0208706

Weiyi Jin, Yumin Zhang, Songyuan Xia, Qizhi Zhu, Yuanhang Sun, Juemin Yi, Jianfeng Wang, Ke Xu

引用次数: 0

Differences in microstructure and properties of Ti-based amorphous composites between recrystallization and partial remelting and semi-solid isothermal treatment 再结晶和部分重熔与半固态等温处理之间钛基无定形复合材料微观结构和性能的差异

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0226545

Xin-hua Huang, Jin-heng Chen, Yu-huai Wang, Yong-xin Luo, Yue-jun Ouyang

{"title":"Differences in microstructure and properties of Ti-based amorphous composites between recrystallization and partial remelting and semi-solid isothermal treatment","authors":"Xin-hua Huang, Jin-heng Chen, Yu-huai Wang, Yong-xin Luo, Yue-jun Ouyang","doi":"10.1063/5.0226545","DOIUrl":"https://doi.org/10.1063/5.0226545","url":null,"abstract":"The as-cast specimens of Ti48Zr18V12Cu5Be17 amorphous composites were prepared by copper mold suction casting. Next, the as-cast specimens were treated using semi-solid isothermal treatment (SSIT) and recrystallization and partial remelting (RAP). The effects of SSIT and RAP on the microstructure and plasticity were analyzed. The results showed that the microstructure changed from fine crystals in the as-cast specimens to coarse bar crystals and near-spherical crystals in the SSIT and RAP specimens, respectively. The crystals of RAP specimens were finer and rounder than those of SSIT specimens due to recrystallization. In addition, the RAP specimens had high plasticity (20.93%), which is 428.5% and 45.2% higher than the as-cast and SSIT specimens, respectively. By observing the shear bands of the fractured specimens, it was found that the expansion of shear bands could not be impeded by the fine β-Ti crystals in the as-cast specimens, leading to an infinite extension that induces brittle fracture in the specimens. The essential cause of the poor plasticity of the as-cast specimens was revealed. In addition, the coarse β-Ti crystals effectively blocked the shear band expansion in the SSIT specimens, and a large number of shear bands were generated in these crystals. In contrast, the crystals of the RAP specimens had a greater number and density of shear bands compared to those of the SSIT specimens, and these shear bands intersected with each other in different directions. This revealed the mechanism by which the SSIT and RAP methods enhance the plasticity of amorphous composites.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"65 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Karpman–Washimi ponderomotive force and self-generated magnetic field in nonextensive plasmas 非广延性等离子体中的卡普曼-瓦希米思动力和自生磁场

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0228257

Ming-Chun Qi, Xiao-Song Yang, Chen Xia, San-Qiu Liu

引用次数: 0

Electronic structures and magnetism of MTe2 (M = Cr, V, and Fe) monolayer nanoribbons MTe2（M = Cr、V 和 Fe）单层纳米带的电子结构和磁性

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0223768

Wei Chen, Qi Chen, Jianmin Zhang, Yu Zheng, Ying Long

{"title":"Electronic structures and magnetism of MTe2 (M = Cr, V, and Fe) monolayer nanoribbons","authors":"Wei Chen, Qi Chen, Jianmin Zhang, Yu Zheng, Ying Long","doi":"10.1063/5.0223768","DOIUrl":"https://doi.org/10.1063/5.0223768","url":null,"abstract":"Inspired by the fabrication of the transition metal dichalcogenide nanoribbons with well-defined atomically precise edges, we study the stability, electronic structures, and magnetism of MTe2 (M = Cr, V, and Fe) monolayer nanoribbons. The calculations indicate that all three types of monolayers can form structurally stable zigzag (ZNR) and armchair (ANR) nanoribbons, which significantly alter the properties of the monolayer films, as shown in Table I. For the zigzag nanoribbons, CrTe2-ZNR transitions from a non-magnetic semiconductor to a ferrimagnetic metal. VTe2-ZNR transforms from a ferromagnetic semiconductor to a ferrimagnetic metal. FeTe2-ZNR mostly maintains the characteristics of the monolayer. For the armchair nanoribbons, CrTe2-ANR exhibits ferrimagnetism. The electrical conductivity is related to the width. CrTe2-ANR with narrow width is semiconducting, while wider ones are metallic. VTe2-ANR displays ferromagnetic or ferrimagnetic metallic behavior depending on the width. FeTe2-ANR with widths larger than 11 remains ferromagnetic metal, while with narrow widths are unstable. In addition, the magnetism of all MTe2 monolayer nanoribbons primarily originates from the 3d transition metal atoms. These findings are essential for applications of MTe2 nanoribbons-based low-dimensional spintronic devices.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"5 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shaping the future of cancer treatment: The commitment of medical physicists 塑造癌症治疗的未来：医学物理学家的承诺

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0219314

Marwan Al-Raeei

{"title":"Shaping the future of cancer treatment: The commitment of medical physicists","authors":"Marwan Al-Raeei","doi":"10.1063/5.0219314","DOIUrl":"https://doi.org/10.1063/5.0219314","url":null,"abstract":"The incorporation of medical physics into the field of oncology has profoundly changed the ways in which cancer is diagnosed and treated. This article highlights the essential roles that medical physicists play in cancer care, demonstrating how principles from physics improve various aspects of oncology practices. Our analysis reveals that medical physics plays a fundamental role in optimizing various oncological procedures, thereby revolutionizing the management of cancer. Specifically, medical physicists are integral to critical areas such as radiation therapy planning, surgical navigation, and quality assurance, which collectively facilitate personalized and effective treatment strategies for patients. By working closely with healthcare professionals, medical physicists help ensure patients receive top-notch care while minimizing side effects associated with treatments. Their dedication to innovation and research is essential for improving both patient outcomes and quality of life throughout the cancer journey. The ongoing partnership between medical physicists and clinicians is instrumental in propelling advancements in oncology research and clinical practices, leveraging physics principles alongside state-of-the-art technologies to enhance cancer management. As medical physicists commit to excellence and patient-centered practices, they are at the forefront of transforming oncology care, promising improved hope and outcomes for those battling cancer. This collaborative effort ensures a bright future for cancer treatment, where the integration of physics not only optimizes therapeutic approaches but also fosters a comprehensive understanding of cancer care.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"27 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the electronic structure and lithium diffusion kinetics of amorphous tungsten oxide 探索无定形氧化钨的电子结构和锂扩散动力学

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0229132

Chao Tang, Huachen Liu, Changlong Cai

引用次数: 0

Kinetic Alfvén solitary waves in astrophysical plasmas 天体物理等离子体中的动力学阿尔芬孤波

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-17 DOI: 10.1063/5.0226568

M. M. Hasan, M. R. Hossen, A. A. Mamun

{"title":"Kinetic Alfvén solitary waves in astrophysical plasmas","authors":"M. M. Hasan, M. R. Hossen, A. A. Mamun","doi":"10.1063/5.0226568","DOIUrl":"https://doi.org/10.1063/5.0226568","url":null,"abstract":"The magnetospheric plasma (hot and thin) and the solar wind plasma (cold and dense) are separated by the Earth’s magnetopause, in which plasmas of both origins coexist. Different types of plasma diffusions are found due to this plasma mixing, and kinetic Alfvén solitary waves (KASWs) are one of them. In this work, a theoretical approach is taken to study the fundamental properties of heavy ion acoustic KASWs (HIAKASWs) in a magnetized plasma system whose constituents are nonextensive q-distributed two temperature electrons with dynamical heavy ions. The perturbations of the magnetized collisionless plasma system are investigated using the reductive perturbation technique to deduce the Korteweg–de Vries (K–DV) and modified K–DV (MK–DV) equations to determine the fundamental characteristics of small, but finite amplitude HIAKASWs. The presence of nonextensive electrons, magnetic field, obliquity angle (the angle between the external magnetic field and wave propagation), plasma particle number densities, and the temperature of various plasma species are observed to significantly alter the fundamental properties of HIAKASWs. The findings of our present study may be useful for comprehending the nonlinear wave properties in diverse interstellar plasma environments.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"42 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evidence for the quenching of rapid photoresponse by defect generation in ultraviolet illumination of CuSbS2 films 在紫外线照射 CuSbS2 薄膜时通过产生缺陷淬灭快速光响应的证据

IF 1.6 4区物理与天体物理

AIP Advances Pub Date : 2024-09-13 DOI: 10.1063/5.0227670

Y. Takagaki

引用次数: 0