Chinese Physics B最新文献_第5页

Model-driven CT reconstruction algorithm for nano-resolution x-ray phase contrast imaging 用于纳米分辨率 X 射线相衬成像的模型驱动 CT 重建算法

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-07-01 DOI: 10.1088/1674-1056/ad3dcc

Yuhang Tan, Xuebao Cai, Jiecheng Yang, Ting Su, Hairong Zheng, Dong Liang, Peiping Zhu, Yongshuai Ge

{"title":"Model-driven CT reconstruction algorithm for nano-resolution x-ray phase contrast imaging","authors":"Yuhang Tan, Xuebao Cai, Jiecheng Yang, Ting Su, Hairong Zheng, Dong Liang, Peiping Zhu, Yongshuai Ge","doi":"10.1088/1674-1056/ad3dcc","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dcc","url":null,"abstract":"The low-density imaging performance of a zone plate-based nano-resolution hard x-ray computed tomography (CT) system can be significantly improved by incorporating a grating-based Lau interferometer. Due to the diffraction, however, the acquired nano-resolution phase signal may suffer splitting problem, which impedes the direct reconstruction of phase contrast CT (nPCT) images. To overcome, a new model-driven nPCT image reconstruction algorithm is developed in this study. In it, the diffraction procedure is mathematically modeled into a matrix <italic toggle=\"yes\"><bold>B</bold></italic>, from which the projections without signal splitting can be generated invertedly. Furthermore, a penalized weighted least-square model with total variation (PWLS-TV) is employed to denoise these projections, from which nPCT images with high accuracy are directly reconstructed. Numerical experiments demonstrate that this new algorithm is able to work with phase projections having any splitting distances. Moreover, results also reveal that nPCT images of higher signal-to-noise-ratio (SNR) could be reconstructed from projections having larger splitting distances. In summary, a novel model-driven nPCT image reconstruction algorithm with high accuracy and robustness is verified for the Lau interferometer-based hard x-ray nano-resolution phase contrast imaging.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"51 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571670","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

Quasi-three-dimensional hydrodynamics of the corona region of laser irradiation of a slab 板坯激光辐照电晕区的准三维流体力学

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-07-01 DOI: 10.1088/1674-1056/ad4532

Xiao-Mei Dong, Ben-Jin Guan, Ying-Jun Li

引用次数: 0

Interface and mechanical degradation mechanisms of the silicon anode in sulfide-based solid-state batteries at high temperatures 硫化物固态电池硅阳极在高温下的界面和机械降解机制

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-07-01 DOI: 10.1088/1674-1056/ad5276

Qiuchen Wang, Yuli Huang, Jing Xu, Xiqian Yu, Hong Li, Liquan Chen

{"title":"Interface and mechanical degradation mechanisms of the silicon anode in sulfide-based solid-state batteries at high temperatures","authors":"Qiuchen Wang, Yuli Huang, Jing Xu, Xiqian Yu, Hong Li, Liquan Chen","doi":"10.1088/1674-1056/ad5276","DOIUrl":"https://doi.org/10.1088/1674-1056/ad5276","url":null,"abstract":"Silicon (Si) is a competitive anode material owing to its high theoretical capacity and low electrochemical potential. Recently, the prospect of Si anodes in solid-state batteries (SSBs) has been proposed due to less solid electrolyte interphase (SEI) formation and particle pulverization. However, major challenges arise for Si anodes in SSBs at elevated temperatures. In this work, the failure mechanisms of Si-Li6PS5Cl (LPSC) composite anodes above 80 °C are thoroughly investigated from the perspectives of interface stability and (electro)chemo-mechanical effect. The chemistry and growth kinetics of Li<italic toggle=\"yes\">x</italic>Si|LPSC interphase are demonstrated by combining electrochemical, chemical and computational characterizations. Si and/or Si–P compound formed at Li<italic toggle=\"yes\">x</italic>Si|LPSC interface prove to be detrimental to interface stability at high temperatures. On the other hand, excessive volume expansion and local stress caused by Si lithiation at high temperatures damage the mechanical structure of Si-LPSC composite anodes. This work elucidates the behavior and failure mechanisms of Si-based anodes in SSBs at high temperatures and provides insights into upgrading Si-based anodes for application in SSBs.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"99 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141883993","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

Physics-embedded machine learning search for Sm-doped PMN-PT piezoelectric ceramics with high performance 嵌入物理学的机器学习搜索 Sm 掺杂的 PMN-PT 高性能压电陶瓷

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-07-01 DOI: 10.1088/1674-1056/ad51f3

Rui Xin, Yaqi Wang, Ze Fang, Fengji Zheng, Wen Gao, Dashi Fu, Guoqing Shi, Jian-Yi Liu, Yongcheng Zhang

{"title":"Physics-embedded machine learning search for Sm-doped PMN-PT piezoelectric ceramics with high performance","authors":"Rui Xin, Yaqi Wang, Ze Fang, Fengji Zheng, Wen Gao, Dashi Fu, Guoqing Shi, Jian-Yi Liu, Yongcheng Zhang","doi":"10.1088/1674-1056/ad51f3","DOIUrl":"https://doi.org/10.1088/1674-1056/ad51f3","url":null,"abstract":"Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) piezoelectric ceramics have excellent piezoelectric properties and are used in a wide range of applications. Adjusting the solid solution ratios of PMN/PT and different concentrations of elemental doping are the main methods to modulate their piezoelectric coefficients. The combination of these controllable conditions leads to an exponential increase of possible compositions in ceramics, which makes it not easy to extend the sample data by additional experimental or theoretical calculations. In this paper, a physics-embedded machine learning method is proposed to overcome the difficulties in obtaining piezoelectric coefficients and Curie temperatures of Sm-doped PMN-PT ceramics with different components. In contrast to all-data-driven model, physics-embedded machine learning is able to learn nonlinear variation rules based on small datasets through potential correlation between ferroelectric properties. Based on the model outputs, the positions of morphotropic phase boundary (MPB) with different Sm doping amounts are explored. We also find the components with the best piezoelectric property and comprehensive performance. Moreover, we set up a database according to the obtained results, through which we can quickly find the optimal components of Sm-doped PMN-PT ceramics according to our specific needs.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"80 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884093","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

Semiclassical approach to spin dynamics of a ferromagnetic S = 1 chain 铁磁 S = 1 链自旋动力学的半经典方法

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-06-01 DOI: 10.1088/1674-1056/ad3c32

Chengchen Li, Yi Cui, Weiqiang Yu, Rong Yu

引用次数: 0

Detecting the quantum phase transition from the perspective of quantum information in the Aubry–André model 从奥布里-安德烈模型中的量子信息角度探测量子相变

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-05-31 DOI: 10.1088/1674-1056/ad2f1f

Geng-Biao Wei, 庚彪韦, Liu Ye, 柳叶, Dong Wang and 栋王

引用次数: 0

Triple points and phase transitions of D-dimensional dyonic AdS black holes with quasitopological electromagnetism in Einstein–Gauss–Bonnet gravity 爱因斯坦-高斯-波奈引力中具有准拓扑电磁学的 D 维染色 AdS 黑洞的三重点和相变

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-05-31 DOI: 10.1088/1674-1056/ad3342

Ping-Hui Mou, 平辉牟, Qing-Quan Jiang, 青权蒋, Ke-Jian He, 柯腱何, Guo-Ping Li and 国平李

{"title":"Triple points and phase transitions of D-dimensional dyonic AdS black holes with quasitopological electromagnetism in Einstein–Gauss–Bonnet gravity","authors":"Ping-Hui Mou, 平辉牟, Qing-Quan Jiang, 青权蒋, Ke-Jian He, 柯腱何, Guo-Ping Li and 国平李","doi":"10.1088/1674-1056/ad3342","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3342","url":null,"abstract":"By considering the negative cosmological constant Λ as a thermodynamic pressure, we study the thermodynamics and phase transitions of the D-dimensional dyonic AdS black holes (BHs) with quasitopological electromagnetism in Einstein–Gauss–Bonnet (EGB) gravity. The results indicate that the small/large BH phase transition that is similar to the van der Waals (vdW) liquid/gas phase transition always exists for any spacetime dimensions. Interestingly, we then find that this BH system exhibits a more complex phase structure in 6-dimensional case that is missed in other dimensions. Specifically, it shows for D = 6 that we observed the small/intermediate/large BH phase transitions in a specific parameter region with the triple point naturally appeared. Moreover, when the magnetic charge turned off, we still observed the small/intermediate/large BH phase transitions and triple point only in 6-dimensional spacetime, which is consistent with the previous results. However, for the dyonic AdS BHs with quasitopological electromagnetism in Einstein–Born–Infeld (EBI) gravity, the novel phase structure composed of two separate coexistence curves observed by Li et al. [Phys. Rev. D105 104048 (2022)] disappeared in EGB gravity. This implies that this novel phase structure is closely related to gravity theories, and seems to have nothing to do with the effect of quasitopological electromagnetism. In addition, it is also true that the critical exponents calculated near the critical points possess identical values as mean field theory. Finally, we conclude that these findings shall provide some deep insights into the intriguing thermodynamic properties of the dyonic AdS BHs with quasitopological electromagnetism in EGB gravity.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"37 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510315","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

Intrinsic polarization conversion and avoided-mode crossing in X-cut lithium niobate microrings X 切面铌酸锂微镜中的本征偏振转换和避免的模式交叉

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-05-01 DOI: 10.1088/1674-1056/ad47b2

Zelin Tan, Jianfa Zhang, Zhihong Zhu, Wei Chen, Zhengzheng Shao, Ken Liu, Shiqiao Qin

{"title":"Intrinsic polarization conversion and avoided-mode crossing in X-cut lithium niobate microrings","authors":"Zelin Tan, Jianfa Zhang, Zhihong Zhu, Wei Chen, Zhengzheng Shao, Ken Liu, Shiqiao Qin","doi":"10.1088/1674-1056/ad47b2","DOIUrl":"https://doi.org/10.1088/1674-1056/ad47b2","url":null,"abstract":"Compared with well-developed free space polarization converters, polarization conversion between TE and TM modes in the waveguide is generally considered to be caused by shape birefringence, like curvature, morphology of waveguide cross section and scattering. Here, we study the polarization conversion mechanism in 1-THz-FSR X-cut lithium niobate microrings with multiple-resonance condition, that is the conversion can be implemented by birefringence of waveguides, which will also introduce an avoided-mode crossing. In the experiment, we find that this mode crossing results in severe suppression of one sideband in local nondegenerate four-wave mixing and disrupts the cascaded four-wave mixing on this side. Simultaneously, we propose one two-dimensional method to simulate the eigenmodes (TE and TM) in X-cut microrings, and the mode crossing point. This work will provide one approach to the design of polarization converters and simulation for monolithic photonics integrated circuits, and may be helpful to the studies of missed temporal dissipative soliton formation in X-cut lithium niobate rings.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"68 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189745","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

Factors resisting protein adsorption on hydrophilic/hydrophobic self-assembled monolayers terminated with hydrophilic hydroxyl groups 亲水/疏水自组装单层上吸附亲水羟基的阻力因素

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-05-01 DOI: 10.1088/1674-1056/ad39ca

Dangxin Mao, Yuan-Yan Wu, Yusong Tu

{"title":"Factors resisting protein adsorption on hydrophilic/hydrophobic self-assembled monolayers terminated with hydrophilic hydroxyl groups","authors":"Dangxin Mao, Yuan-Yan Wu, Yusong Tu","doi":"10.1088/1674-1056/ad39ca","DOIUrl":"https://doi.org/10.1088/1674-1056/ad39ca","url":null,"abstract":"The hydroxyl-terminated self-assembled monolayer (OH-SAM), as a surface resistant to protein adsorption, exhibits substantial potential in applications such as ship navigation and medical implants, and the appropriate strategies for designing anti-fouling surfaces are crucial. Here, we employ molecular dynamics simulations and alchemical free energy calculations to systematically analyze the factors influencing resistance to protein adsorption on the SAMs terminated with single or double OH groups at three packing densities (<italic toggle=\"yes\">Σ</italic> = 2.0 nm−2, 4.5 nm−2, and 6.5 nm−2), respectively. For the first time, we observed that the compactness and order of interfacial water enhance its physical barrier effect, subsequently enhancing the resistance of SAM to protein adsorption. Notably, the spatial hindrance effect of SAM leads to the embedding of protein into SAM, resulting in a lack of resistance of SAM towards protein. Furthermore, the number of hydroxyl groups per unit area of double OH-terminated SAM at <italic toggle=\"yes\">Σ</italic> = 6.5 nm−2 is approximately 2 to 3 times that of single OH-terminated SAM at <italic toggle=\"yes\">Σ</italic> = 6.5 nm−2 and 4.5 nm−2, consequently yielding a weaker resistance of double OH-terminated SAM towards protein. Meanwhile, due to the structure of SAM itself, i.e., the formation of a nearly perfect ice-like hydrogen bond structure, the SAM exhibits the weakest resistance towards protein. This study will complement and improve the mechanism of OH-SAM resistance to protein adsorption, especially the traditional barrier effect of interfacial water.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"86 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189759","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

Interplay between topology and localization on superconducting circuits 超导电路拓扑与定位之间的相互作用

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-05-01 DOI: 10.1088/1674-1056/ad342c

Xin Guan, Bingyan Huo, Gang Chen

{"title":"Interplay between topology and localization on superconducting circuits","authors":"Xin Guan, Bingyan Huo, Gang Chen","doi":"10.1088/1674-1056/ad342c","DOIUrl":"https://doi.org/10.1088/1674-1056/ad342c","url":null,"abstract":"Topological insulators occupy a prominent position in the realm of condensed matter physics. Nevertheless, the presence of strong disorder has the potential to disrupt the integrity of topological states, leading to the localization of all states. This study delves into the intricate interplay between topology and localization within the one-dimensional Su–Schrieffer–Heeger (SSH) model, which incorporates controllable off-diagonal quasi-periodic modulations on superconducting circuits. Through the application of external alternating current (ac) magnetic fluxes, each transmon undergoes controlled driving, enabling independent tuning of all coupling strengths. Within a framework of this model, we construct comprehensive phase diagrams delineating regions characterized by extended topologically nontrivial states, critical localization, and co-existing topological and critical localization phases. The paper also addresses the dynamics of qubit excitations, elucidating distinct quantum state transfers resulting from the intricate interplay between topology and localization. Additionally, we propose a method for detecting diverse quantum phases utilizing existing experimental setups.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"12 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141530164","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