Chinese Physics B最新文献_第9页

Stable photocurrent–voltage characteristics of perovskite single crystal detectors obtained by pulsed bias 通过脉冲偏压获得的过氧化物单晶探测器的稳定光电流-电压特性

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-03-01 DOI: 10.1088/1674-1056/ad23d7

Xin Liu, Zhi-Long Chen, Hu Wang, Wen-Qing Zhang, Hao Dong, Peng-Xiang Wang, Yu-Chuan Shao

{"title":"Stable photocurrent–voltage characteristics of perovskite single crystal detectors obtained by pulsed bias","authors":"Xin Liu, Zhi-Long Chen, Hu Wang, Wen-Qing Zhang, Hao Dong, Peng-Xiang Wang, Yu-Chuan Shao","doi":"10.1088/1674-1056/ad23d7","DOIUrl":"https://doi.org/10.1088/1674-1056/ad23d7","url":null,"abstract":"Photocurrent–voltage characterization is a crucial method for assessing key parameters in x-ray or <italic toggle=\"yes\">γ</italic>-ray semiconductor detectors, especially the carrier mobility lifetime product. However, the high biases during photocurrent measurements tend to cause severe ion migration, which can lead to the instability and inaccuracy of the test results. Given the mixed electronic–ionic characteristics, it is imperative to devise novel methods capable of precisely measuring photocurrent–voltage characteristics under high bias conditions, free from interference caused by ion migration. In this paper, pulsed bias is employed to explore the photocurrent–voltage characteristics of MAPbBr3 single crystals. The method yields stable photocurrent–voltage characteristics at a pulsed bias of up to 30 V, proving to be effective in mitigating ion migration. Through fitting the modified Hecht equation, we determined the mobility lifetime products of 1.0 × 10−2 cm2⋅V−1 for hole and 2.78 × 10−3 cm2⋅V−1 for electron. This approach offers a promising solution for accurately measuring the transport properties of carriers in perovskite.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"33 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312155","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

Modeling the performance of perovskite solar cells with inserting porous insulating alumina nanoplates 为插入多孔绝缘氧化铝纳米板的过氧化物太阳能电池的性能建模

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-03-01 DOI: 10.1088/1674-1056/ad1480

Zhaoyao Pan, Jinpeng Yang, Xiaoshuang Shen

引用次数: 0

Magnetic diagnostics layout design for CFETR plasma equilibrium reconstruction 用于 CFETR 等离子体平衡重建的磁诊断布局设计

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-03-01 DOI: 10.1088/1674-1056/ad23d6

Qingze Yu, Yao Huang, Zhengping Luo, Yuehang Wang, Zijie Liu, Wangyi Rui, Kai Wu, Bingjia Xiao, Jiangang Li

{"title":"Magnetic diagnostics layout design for CFETR plasma equilibrium reconstruction","authors":"Qingze Yu, Yao Huang, Zhengping Luo, Yuehang Wang, Zijie Liu, Wangyi Rui, Kai Wu, Bingjia Xiao, Jiangang Li","doi":"10.1088/1674-1056/ad23d6","DOIUrl":"https://doi.org/10.1088/1674-1056/ad23d6","url":null,"abstract":"Plasma equilibrium reconstruction provides essential information for tokamak operation and physical analysis. An extensive and reliable set of magnetic diagnostics is required to obtain accurate plasma equilibrium. This study designs and optimizes the magnetic diagnostics layout for the reconstruction of the equilibrium of the plasma according to the scientific objectives, engineering design parameters, and limitations of the Chinese Fusion Engineering Test Reactor (CFETR). Based on the CFETR discharge simulation, magnetic measurement data are employed to reconstruct consistent plasma equilibrium parameters, and magnetic diagnostics’ number and position are optimized by truncated Singular value decomposition, verifying the redundancy reliability of the magnetic diagnostics layout design. This provides a design solution for the layout of the magnetic diagnostics system required to control the plasma equilibrium of CFETR, and the developed design and optimization method can provide effective support to design magnetic diagnostics systems for future magnetic confinement fusion devices.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"25 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312185","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

Anomalous spin Josephson effect in spin superconductors 自旋超导体中的反常自旋约瑟夫森效应

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-02-01 DOI: 10.1088/1674-1056/ad1982

Wen Zeng, Rui Shen

引用次数: 0

Remote Possibility of Post Aural Swelling as Nodular Hidradenoma: A Case Report. 耳后肿胀远期可能为结节状赘生物瘤：病例报告。

IF 1.5 4区物理与天体物理

Chinese Physics B Pub Date : 2024-02-01 Epub Date: 2023-08-07 DOI: 10.1007/s12070-023-04089-2

Lourdes Albina Siluvai Arulappan, Blessed Finney Eleza

引用次数: 0

Enhanced measurement precision with continuous interrogation during dynamical decoupling 在动态解耦过程中通过连续询问提高测量精度

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-02-01 DOI: 10.1088/1674-1056/ad1985

Jun Zhang, Peng Du, Lei Jing, Peng Xu, Li You, Wenxian Zhang

引用次数: 0

Preparing highly entangled states of nanodiamond rotation and NV center spin 制备纳米金刚石旋转和 NV 中心自旋的高度纠缠态

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-02-01 DOI: 10.1088/1674-1056/ad117a

Wen-Liang Li, Duan-Lu Zhou

引用次数: 0

Dynamical nonlinear excitations induced by interaction quench in a two-dimensional box-trapped Bose–Einstein condensate 二维箱阱玻色-爱因斯坦凝聚态中由相互作用淬火诱发的动态非线性激变

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-02-01 DOI: 10.1088/1674-1056/ad1179

Zhen-Xia Niu, Chao Gao

{"title":"Dynamical nonlinear excitations induced by interaction quench in a two-dimensional box-trapped Bose–Einstein condensate","authors":"Zhen-Xia Niu, Chao Gao","doi":"10.1088/1674-1056/ad1179","DOIUrl":"https://doi.org/10.1088/1674-1056/ad1179","url":null,"abstract":"Manipulating nonlinear excitations, including solitons and vortices, is an essential topic in quantum many-body physics. A new progress in this direction is a protocol proposed in [<italic toggle=\"yes\">Phys. Rev. Res.</italic>\u0000<bold>2</bold> 043256 (2020)] to produce dark solitons in a one-dimensional atomic Bose–Einstein condensate (BEC) by quenching inter-atomic interaction. Motivated by this work, we generalize the protocol to a two-dimensional BEC and investigate the generic scenario of its post-quench dynamics. For an isotropic disk trap with a hard-wall boundary, we find that successive inward-moving ring dark solitons (RDSs) can be induced from the edge, and the number of RDSs can be controlled by tuning the ratio of the after- and before-quench interaction strength across different critical values. The role of the quench played on the profiles of the density, phase, and sound velocity is also investigated. Due to the snake instability, the RDSs then become vortex–antivortex pairs with peculiar dynamics managed by the initial density and the after-quench interaction. By tuning the geometry of the box traps, demonstrated as polygonal ones, more subtle dynamics of solitons and vortices are enabled. Our proposed protocol and the discovered rich dynamical effects on nonlinear excitations can be realized in near future cold-atom experiments.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"8 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139758643","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

Advances in Neuromorphic Computing: Expanding Horizons for AI Development through Novel Artificial Neurons and In-Sensor Computing 神经形态计算的进展：通过新型人工神经元和传感器内计算拓展人工智能发展的视野

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c58

Yubo Yang, Jizhe Zhao, Yinjie Liu, Xiayang Hua, Tianrui Wang, Ji-yuan Zheng, Z. Hao, B. Xiong, Changzheng Sun, Yanjun Han, Jian Wang, Hongtao Li, Lai Wang, Yi Luo

{"title":"Advances in Neuromorphic Computing: Expanding Horizons for AI Development through Novel Artificial Neurons and In-Sensor Computing","authors":"Yubo Yang, Jizhe Zhao, Yinjie Liu, Xiayang Hua, Tianrui Wang, Ji-yuan Zheng, Z. Hao, B. Xiong, Changzheng Sun, Yanjun Han, Jian Wang, Hongtao Li, Lai Wang, Yi Luo","doi":"10.1088/1674-1056/ad1c58","DOIUrl":"https://doi.org/10.1088/1674-1056/ad1c58","url":null,"abstract":"\u0000 AI development has brought great success to upgrading the information age. At the same time, the large-scale Artificial Neural Network for building AI systems is thirsty for computing power, which is barely satisfied by the conventional computing hardware. In the post-Moore era, the increase in computing power brought about by the size reduction of CMOS in very large-scale integrated circuits (VLSIC) is challenging to meet the growing demand for AI computing power. To address the issue, technical approaches like neuromorphic computing attract great attention because of their feature of breaking Von-Neumann architecture, and dealing with AI algorithms much more parallelly and energy efficiently. Inspired by the human neural network architecture, neuromorphic computing hardware is brought to life based on novel artificial neurons constructed by new materials or devices. Although it is relatively difficult to deploy a training process in the neuromorphic architecture like spiking neural network (SNN), the development in this field has incubated promising technologies like in-sensor computing, which brings new opportunities for multidisciplinary research, including the field of optoelectronic materials and devices, artificial neural networks, and microelectronics integration technology. The vision chips based on the architectures could reduce unnecessary data transfer and realize fast and energy-efficient visual cognitive processing. This paper reviews firstly the architectures and algorithms of SNN, and artificial neuron devices supporting neuromorphic computing, then the recent progress of in-sensor computing vision chips, which all will promote the development of AI.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"10 20","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139443617","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

Novel Self-Embedding Holographic Watermarking Image Encryption Protection Scheme 新颖的自嵌入式全息水印图像加密保护方案

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c5b

Linian Wang, Nanrun Zhou, Bo Sun, Yinghong Cao, Jun Mou

引用次数: 0