Chinese Physics B最新文献_第3页

Revealing the microstructures of metal halide perovskite thin films via advanced transmission electron microscopy 通过先进的透射电子显微镜揭示金属卤化物包光体薄膜的微观结构

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6259

Yeming Xian, Xiaoming Wang, Yanfa Yan

引用次数: 0

Membrane tension evolution and mechanical regulation of melittin-induced membrane poration 膜张力演化和美利汀诱导膜孔化的机械调控

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6254

Wanting Zhang, Rong Xu, Wendong Ma, Zhao Lin, Kai Yang, Bing Yuan

{"title":"Membrane tension evolution and mechanical regulation of melittin-induced membrane poration","authors":"Wanting Zhang, Rong Xu, Wendong Ma, Zhao Lin, Kai Yang, Bing Yuan","doi":"10.1088/1674-1056/ad6254","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6254","url":null,"abstract":"\u0000 Membrane tension plays a crucial role in various fundamental cellular processes, with one notable example being the T cell-mediated elimination of tumor cells through perforin-induced membrane perforation by amplifying cellular force. However, the mechanisms governing the regulation of biomolecular activities at the cell interface by membrane tension remain elusive. In this study, we investigated the correlation between membrane tension and poration activity of melittin, a prototypical pore-forming peptide, using dynamic giant unilamellar vesicle leakage assays combined with flickering tension analysis, molecular dynamics simulations, and live cell assays. The results demonstrate that an increase in membrane tension enhances the activity of melittin, particularly near its critical pore-forming concentration. Moreover, peptide actions such as binding, insertion, and aggregation in the membrane further influence the evolution of membrane tension. Live cell experiments reveal that artificially enhancing membrane tension effectively enhances melittin's ability to induce pore formation and disrupt membranes, resulting in up to a ten-fold increase in A549 cell mortality when exposed to a concentration of 2.0 μg mL-1 melittin. Our findings elucidate the relationship between membrane tension and the mechanism of action as well as pore-forming efficiency of melittin, while providing a practical mechanical approach for regulating functional activity of molecules at the cell-membrane interface.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"46 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653096","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

Electronic structure engineering of transition metal dichalcogenides for boosting hydrogen energy conversion electrocatalysts 促进氢能转换电催化剂的过渡金属二卤化物电子结构工程

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad625b

Bing Hao, Jingjing Guo, Peizhi Liu, Junjie Guo

{"title":"Electronic structure engineering of transition metal dichalcogenides for boosting hydrogen energy conversion electrocatalysts","authors":"Bing Hao, Jingjing Guo, Peizhi Liu, Junjie Guo","doi":"10.1088/1674-1056/ad625b","DOIUrl":"https://doi.org/10.1088/1674-1056/ad625b","url":null,"abstract":"\u0000 Electrocatalytic water splitting for hydrogen production is an appealing strategy to reduce carbon emissions and generate renewable fuels. This promising process, however, is limited by its sluggish reaction kinetics and high-cost catalysts. The two- dimensional (2D) transition metal dichalcogenides (TMDCs) have presented great potential as electrocatalytic materials due to their tunable bandgaps, abundant defective active sites, and good chemical stability. Consequently, phase engineering, defect engineering and interface engineering have been adopted to manipulate the electronic structure of TMDCs for boosting their exceptional catalytic performance. Particularly, it is essential to clarify the local structure of catalytically active sites of TMDCs and their structural evolution in catalytic reactions, using atomic resolution electron microscopy and the booming in situ technologies, which is beneficial for exploring the underlying reaction mechanism.\u0000 In this review, the growth regulation, characterization, particularly atomic configurations of active sites in TMDCs were summarized. The significant role of electron microscopy for the understanding of the growth mechanism, the controlled synthesis and functional optimization of 2D TMDCs are discussed. This review will shed lights on the design and synthesis of novel electrocatalysts with high performance, as well as prompt the application of advanced electron microscopy in the research of materials science.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"13 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653725","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

Effect of Matrix Thermal Properties on Laser Induced Plasma 基质热特性对激光诱导等离子体的影响

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6251

Yuheng Shan, An Li, Xinyun Zhang, Wen Yi, Ying Zhang, Xiaodong Liu, Ruibin Liu

引用次数: 0

Casson Hybrid Nanofluids Flow Over a Riga Plate for the Drug Delivery Applications with Double Diffusion 卡松混合纳米流体在里加板上的流动，用于双重扩散的药物输送应用

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad624e

A. Alnahdi, T. Gul

{"title":"Casson Hybrid Nanofluids Flow Over a Riga Plate for the Drug Delivery Applications with Double Diffusion","authors":"A. Alnahdi, T. Gul","doi":"10.1088/1674-1056/ad624e","DOIUrl":"https://doi.org/10.1088/1674-1056/ad624e","url":null,"abstract":"\u0000 Casson fluid-mediated hybrid nanofluids are more effective at transferring heat than traditional heat transfer fluids in terms of thermal conductivity. Heat exchangers, cooling systems, and other thermal management systems are ideal for the use of Casson fluid. Controlling medication flow and release with precision is necessary when using Casson fluids in drug delivery systems because of their unique rheological properties. Nanotechnology involves the creation of nanoparticles that are loaded with drugs and distributed in Casson fluid-based carriers for targeted delivery.\u0000 To create a hybrid nanofluid in this study, both single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) are dispersed in the Casson fluid with Fourier's and Fick's laws assumptions. The Casson fluid is suitable for various engineering and medical applications due to the enhancement of heat transfer and thermal conductivity by carbon nanotubes.\u0000 Our objective is to understand how SWCNTs and MWCNTs impact the flow field by studying the flow behavior of the Casson hybrid nanofluid when it is stretched against a Riga plate. The DarcyForchheimer model is also used to account for the impact of the porous medium near the stretching plate. Both linear and quadratic drag terms are taken into account in this model to accurately predict the flow behavior of the nanofluid. In addition, the homotopy analysis method (HAM) is utilized to address the model problem. The outcomes are discussed and deliberated based on drug delivery applications. These findings shed valuable light on the flow characteristics of the Casson hybrid nanofluid comprised of SWCNTs and MWCNTs.It is observed that the incorporation of CNTs makes the nanofluid a promising candidate for medical applications due to its improved heat transfer properties.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"84 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653328","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

Thermodynamics of charged AdS black hole surrounded by quintessence in restricted phase space 受限相空间中被五子包围的带电 AdS 黑洞的热力学

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad624f

Siyu Jian, Siying Long, Juhua Chen, Yong-jiu Wang

{"title":"Thermodynamics of charged AdS black hole surrounded by quintessence in restricted phase space","authors":"Siyu Jian, Siying Long, Juhua Chen, Yong-jiu Wang","doi":"10.1088/1674-1056/ad624f","DOIUrl":"https://doi.org/10.1088/1674-1056/ad624f","url":null,"abstract":"\u0000 In this paper, we study the thermodynamics of charged AdS black hole surrounded by quintessence in a new formalism which is called the restricted phase space thermodynamics(RPST). This context is based on the Visser's holographic thermodynamics with a fixed Anti-de Sitter radius and a variable Newton constant. The conjugate variables central charge $C$ and the chemical potential $mu$ are introduced as a new pair of thermodynamic variables. We have found that the iso-e-charge $T-S$ curve becomes non-monotonic when $hat{Q}＜hat{Q}_{c}$. And correspondingly, the $F-T$ curve exhibits a swallow tail structure. This behavior is considered as a Van der Waals-like phase transition. As the value of $hat{b}$ related to the energy density of Kiselev's fluid gets larger, the critical temperature $T_c$ will decrease. So the Van der Waals-like phase transition will occure at lower temperature. There is always a non-quilibrium transition from a small unstable black hole to a large stable black hole state in the isocoltage $T-S$ process. And there contains a maximuma and a Hawking-Page phase transition point in the $mu-C$ plane. As the value of $hat{b}$ related to Kiselev's fluid gets larger, the Hawking-Page phase transition will occur at the lower temperature in the isovoltage $mu-T$ process. For the other values of the state parameter $omega$, there also exists Van der Waals-like phase transition.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"54 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141652551","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

Experimental studies of H2/Ar plasma in a cylindrical inductive discharges with an expansion region 带膨胀区的圆柱形感应放电中的 H2/Ar 等离子体的实验研究

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6250

Shi-Bo Li, Si-Yu Xing, F. Gao, You-Nian Wang

{"title":"Experimental studies of H2/Ar plasma in a cylindrical inductive discharges with an expansion region","authors":"Shi-Bo Li, Si-Yu Xing, F. Gao, You-Nian Wang","doi":"10.1088/1674-1056/ad6250","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6250","url":null,"abstract":"\u0000 The electrical parameters of H2/Ar plasma in a cylindrical inductive discharge with an expansion region are investigated by a Langmuir probe, where Ar fractions range from 0 % to 100 %. The influence of gas composition and pressure on electron density, the effective electron temperature and the electron energy probability functions (EEPFs) at different spatial positions are present. In driver region, with the introduction of a small amount of Ar at 0.3 Pa, there is a rapid increase in electron density accompanied by a decrease in the effective electron temperature. Additionally, the shape of the EEPF transitions from a three-temperature distribution to a bi-Maxwellian distribution due to an increase in electron-electron collision. However, this phenomenon resulting from the changes in gas composition vanishes at 5 Pa duo to the prior depletion of energetic electrons caused by the increase in pressure during hydrogen discharge. The EEPFs for the total energy in expansion region is coincident to these in the driver region at 0.3 Pa, as do the patterns of electron density variation between these two regions for differing Ar fractions. At 5 Pa, as the discharge transitions from H2 to Ar, the EEPFs evolved from a bi-Maxwellian distribution with pronounced low energy electrons to a Maxwellian distribution in expansion region. This evolve may be attributed to a reduction in molecular vibrational excitation reactions of electrons during transport and the transition from localized electron dynamics in hydrogen discharge to non-localized electron dynamics in argon discharge. In order to validate the experimental results, we use the COMSOL simulation software to calculate electrical parameters under the same conditions. The evolution and spatial distribution of the electrical parameters of the simulation results agree well with the trend of the experimental results.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"42 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653426","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

Image encryption algorithm based on multiple chaotic systems and improved Joseph block scrambling 基于多重混沌系统的图像加密算法和改进的约瑟夫块加扰算法

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6257

Dingkang Mou, Yumin Dong

{"title":"Image encryption algorithm based on multiple chaotic systems and improved Joseph block scrambling","authors":"Dingkang Mou, Yumin Dong","doi":"10.1088/1674-1056/ad6257","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6257","url":null,"abstract":"\u0000 With the rapid development of digital information technology, images are increasingly used in various fields. To ensure the security of image data, prevent unauthorized tampering and leakage, maintain personal privacy, and protect intellectual property rights, this study proposes an innovative color image encryption algorithm. Initially, the Mersenne Twister algorithm is utilized to generate high-quality pseudo-random numbers, establishing a robust basis for subsequent operations. Subsequently, two distinct chaotic systems, the autonomous non-Hamiltonian chaotic system, and the Tent-Logistic-Cosine chaotic mapping, are employed to produce chaotic random sequences. These chaotic sequences are used to control the encoding and decoding process of the DNA, effectively scrambling the image pixels. Furthermore, the complexity of the encryption process is enhanced through improved Joseph block scrambling. After thorough experimental verification, research, and analysis, the average value of the information entropy test data reaches as high as 7.999. Additionally, the average value of the NPCR test data is 99.6101%, which closely approaches the ideal value of 99.6094%. This algorithm not only guarantees image quality but also substantially raises the difficulty level of decryption.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"45 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653210","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

Optimization performance of quantum endoreversible Otto machines with dual-squeezed reservoirs 具有双挤压储层的量子内可逆奥托机的优化性能

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6252

Haoguang Liu

{"title":"Optimization performance of quantum endoreversible Otto machines with dual-squeezed reservoirs","authors":"Haoguang Liu","doi":"10.1088/1674-1056/ad6252","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6252","url":null,"abstract":"\u0000 We consider a quantum endoreversible Otto engine cycle and its inverse operation-Otto refrigeration cycle, employing two-level systems as the working substance and operating in dual-squeezed reservoirs. We demonstrate that the efficiency of heat engines at maximum work output and the coefficient of performance for refrigerators at the maximum $chi$ criterion will degenerate to $ eta_-=eta_C/(2-eta_C)$ and $ varepsilon_-=(sqrt{9+8varepsilon_C}-3)/2$ when symmetric squeezing is satisfied, respectively. We also investigated the influences of squeezing degree on the performance optimization of quantum Otto heat engines at the maximum work output and refrigerators at the maximum $chi$ criterion. These analytical results show that the efficiency of heat engines at maximum work output and the coefficient of performance for refrigerators at the maximum $chi$ criterion can be improved, reduced or even inhibited in asymmetric squeezing. Furthermore, we also find that the efficiency of quantum Otto heat engines at maximum work output is lower than those obtained from the Otto heat engines based on a single harmonic oscillator system. However, the coefficient of performance of the corresponding refrigerator is higher.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"37 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653877","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

Delayed-measurement one-way quantum computing on cloud quantum computer 云量子计算机上的延迟测量单向量子计算

Chinese Physics B Pub Date : 2024-07-12 DOI: 10.1088/1674-1056/ad6253

Zhi-Peng Yang, Yu-Ran Zhang, Fu-Li Li, Heng Fan

{"title":"Delayed-measurement one-way quantum computing on cloud quantum computer","authors":"Zhi-Peng Yang, Yu-Ran Zhang, Fu-Li Li, Heng Fan","doi":"10.1088/1674-1056/ad6253","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6253","url":null,"abstract":"\u0000 One-way quantum computation focuses on initially generating an entangled cluster state followed by a sequence of measurements with classical communication of their individual outcomes. Recently, a delayed-measurement approach has been applied to replace classical communication of individual measurement outcomes. In this work, by considering the delayed-measurement approach, we demonstrate a modified one-way CNOT gate using the on-cloud superconducting quantum computing platform: Quafu. The modified protocol for one-way quantum computing requires only three qubits rather than the four used in the standard protocol. Since this modified cluster state decreases the number of physical qubits required to implement one-way computation, both the scalability and complexity of the computing process are improved. Compared to previous work, this modified oneway CNOT gate is superior to the standard one in both fidelity and resource requirements. We have also numerically compared the behavior of standard and modified methods in large-scale one-way quantum computing. Our results suggest that in a noisy intermediate-scale quantum (NISQ) era, the modified method shows a significant advantage for one-way quantum computation.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"68 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653141","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