Chinese Journal of Physics最新文献

{"title":"Robust entangled state transmission and preparation in a trimer-like chain","authors":"Li-Na Zheng ,&nbsp;Hong-Fu Wang ,&nbsp;Xuexi Yi","doi":"10.1016/j.cjph.2024.12.009","DOIUrl":"10.1016/j.cjph.2024.12.009","url":null,"abstract":"<div><div>We propose a scheme to achieve entangled state transmission and preparation via the topologically protected gap states in a trimer-like chain. By employing the trimer chain with tunable coupling strength, the transmission channel depending on the peculiar distribution of the gap states can be constructed, which allows for an entangled state transmission from the leftmost end to the rightmost end. We emphasize that the gap states are protected by the energy gap and, hence, are naturally immune to the mild disorder of coupling strength and on-site potential. Moreover, the chain manifests good scalability and can be extended to a local nonreciprocal coupling configuration. Combining the comprehensive influence of the gap state distribution characteristics and the local nonreciprocal coupling modulation, we implement a reliable entangled state preparation through the dynamical evolution of the gap states, in which the entangled state possesses an arbitrary entanglement form. Our work provides a method for investigating the transmission and preparation of entangled states within an extended Su–Schrieffer–Heeger model and is valuable for future quantum technologies relying on entanglement resources.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 471-481"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Insights in the nonlinear instability of a ferromagnetic fluid jet","authors":"Galal M. Moatimid,&nbsp;Mona A.A. Mohamed,&nbsp;Khaled Elagamy","doi":"10.1016/j.cjph.2024.12.028","DOIUrl":"10.1016/j.cjph.2024.12.028","url":null,"abstract":"<div><div>The objective of the current study is to scrutinize the nonlinear instability of a cylindrical interface linking two distinct viscoelastic magnetic fluids. The viscoelastic fluid obeys the Eyring-Powell non-Newtonian (EPF) type. It is supposed that the liquids are initially streaming with uniform velocities and saturated in a permeable media. Additionally, an unchanged axial magnetic field (MF) is pervaded by the presence of surface tension (ST). The motivation of the current matter is essential for sophisticated material processing and precision engineering, as it enhances their stability and responsiveness under diverse situations, facilitating more efficient devices and novel applications in microfluidics and soft robotics. It is also improved the material processing, biomedical devices, flexible electronics, and drug delivery systems, in addition to optimizing ferrofluid-based actuators and sensors in MFs. The methodology of the analysis is grounded in the non-perturbative approach (NPA). This methodology is established mainly on He's frequency formula (HFF). To relax the calculated manipulation, the viscous potential theory (VPT) is employed. The linear partial differential equations (PDEs) governing the motion are solved in light of the nonlinear boundary conditions (BCs). This organization produced a complicated nonlinear characteristic PDE. A procedure concerning the non-dimensional analysis is adopted to reveal a set of dimensionless physical parameters. A compound nonlinear specific formula with complex factors has resulted in the form of the former procedure. It is discovered that ignoring the Weber number excludes all the imaginary components. The nonlinear characteristic ODE is studied in instances of the real besides the complex coefficients. A set of diagrams is plotted to display the stability configuration with the variation of diverse physical pertinent parameters. The stability zones fluctuate between increasing and decreasing due to various characteristics, although remains predominantly stable. Additionally, a collection of PolarPlots moreover time variation and phase plane diagrams are illustrated for the equivalent solution to grantee stable solutions. The damping in the complex solution is increasing and speeding with the rise of the amplitude factor and the wave number.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 442-470"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"A five-dimensional thermos-controlled system with a simple attractive torus and synchronous application","authors":"Shaohui Yan,&nbsp;Bian Zheng,&nbsp;Jianwei Jiang","doi":"10.1016/j.cjph.2024.11.013","DOIUrl":"10.1016/j.cjph.2024.11.013","url":null,"abstract":"<div><div>As a classic volume-conservative system, the Nose–Hoover chain can generate conservative chaos and nested invariant tori. This article utilizes the Nose–Hoover chain to produce a new five-dimensional thermos-controlled system, discovering the coexistence of conservative flows and dissipative attractors. A local analysis of the system reveals a fold-Hopf bifurcation. The system model becomes meaningful only when <span><math><mrow><mi>T</mi><mo>&gt;</mo><mn>0</mn></mrow></math></span>, resulting in continuous energy fluctuations within the system that manifest as chaotic or other complex behaviors. Then, the dynamical behaviors of the system are studied, and in addition to the coexistence phenomenon, the system also exhibits transient chaos. And its implementation is realized using FPGA (Field Programmable Gate Array) technology. Finally, adaptive finite-time projective synchronization is designed and implemented for homeogeneous systems, and heterogeneous adaptive finite-time projective synchronization is achieved with a five-dimensional conservative system.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 348-367"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"On IFDM simulation of Oldroyd 8-constant fluid flowing due to motile microorganisms","authors":"Zeeshan Asghar ,&nbsp;Muhammad Waris Saeed Khan ,&nbsp;Nasir Ali ,&nbsp;Muhammad Waqas","doi":"10.1016/j.cjph.2024.11.033","DOIUrl":"10.1016/j.cjph.2024.11.033","url":null,"abstract":"<div><div>This work studies the motion of bacteria on the Oldroyd 8-constant slime layer to determine the fundamental mechanism of bacterium gliding over immune system cells based on creeping flow and long wavelength approximation applicable to Stokes equations. Galilean transformation is also utilized to convert the problem from the lab to a wave frame. The bacterial gliding speed and the fluid flow rate are computed using an implicit finite difference method (IFDM), and a root-finding algorithm. These computed pairs are utilized to get power dissipation. Our results show that, due to the effect of slime rheology, characterized by relaxation time and retardation time, the gliding speed, flow rate of slime, and energy dissipation of bacteria are greatly modulated. Dynamic analysis shows that bacteria glide more quickly with reduced power dissipation when relaxation time is less than retardation time. On the other hand, relaxation time greater than the retardation time leads to slower bacterial swimming with increased energy consumption. The work presented here emphasizes that changes in the rheology of slime, specifically added time (relaxation and retardation time), can promote or inhibit bacterial motility. Additionally, the outcomes are confirmed using a separate technique based on bvp4c solver. A new comprehensive understanding of how this gliding happens (by controlling slime rheology and gliding gait) opens up possibilities for bio-inspired designs in the form of micro-robots or anti-fouling surfaces based on this work.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 158-171"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"The role of interface traps to affect monolayer MoS2 phototransistor","authors":"Tzu-En Huang ,&nbsp;Chen-Yu Wang ,&nbsp;Hua-Hsing Liu ,&nbsp;Bor-Wei Liang ,&nbsp;Ruei-Yu Hsu ,&nbsp;Yu-Yang Chen ,&nbsp;Yann-Wen Lan ,&nbsp;Kuan-Ming Hung ,&nbsp;Kuang Yao Lo","doi":"10.1016/j.cjph.2024.12.007","DOIUrl":"10.1016/j.cjph.2024.12.007","url":null,"abstract":"<div><div>With high quantum efficiency, layer-dependent bandgap, and minimal dark current, molybdenum disulfide (MoS₂) phototransistors show promise in scientific research and practical applications. The atomic layer thickness of monolayer MoS₂ on silicon dioxide (SiO₂) significantly influences properties such as mobility and carrier concentration due to interfacial traps. These traps lead to an increase in dark current, thus reducing photo-detectivity and sensitivity in MoS₂-based photodetectors. In this study, we explore a MoS₂-based field-effect phototransistor with interfacial trap effects at the MoS₂/SiO₂ and Si/SiO₂ interfaces. Varying source-drain voltage, gate voltage, and illumination power, we examine the impact of interface traps. Our results reveal the emergence of an optically induced field (OIF) during illumination, originating from the interaction between photon-generated electrons and interfacial traps. OIF significantly influences both strength and direction of photocurrent. These findings provide a novel approach to studying interface traps in ultrathin material phototransistors, contributing to advancements in this field.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 233-242"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Computational intelligence investigations on the correlation of pharmaceutical solubility in mixtures of binary solvents: Effect of composition and temperature","authors":"Mohammed Alqarni ,&nbsp;Ali Alqarni","doi":"10.1016/j.cjph.2024.12.021","DOIUrl":"10.1016/j.cjph.2024.12.021","url":null,"abstract":"<div><div>In this study, we investigated the predictive modeling of solubility as a function of temperature, solvent type, and mass fraction through the implementation of advanced machine learning techniques. The case study is solubility of Rivaroxaban in binary mixtures of dichloromethane and alcohols with varying compositions. Given the non-linear and complex nature of solubility phenomena, we employed three regression models—K-Nearest Neighbors (KNN), Support Vector Machine (SVM), and Matern Gaussian Process Regression (MGPR)—to capture complex interactions between variables. Stochastic Fractal Search (SFS) was utilized for hyper-parameter tuning of the regression models. The model's performance was evaluated using helpful metrics, such as the coefficient of determination (R²), Mean Squared Error (MSE), Mean Absolute Error (MAE), and Mean Absolute Percentage Error (MAPE) to assess accuracy and reliability. Among the models tested, MGPR demonstrated superior performance achieving an exceptional R² of 0.973. This reflects MGPR's strong ability to generalize to new data and capture solubility behavior nuances. In comparison, SVM and KNN models, while moderately accurate, did not match MGPR's precision.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 503-514"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Particle dynamics and QPOs around a black hole coupled with nonlinear electrodynamics and cloud of strings","authors":"G. Mustafa ,&nbsp;Faisal Javed ,&nbsp;S.K. Maurya ,&nbsp;Assmaa Abd-Elmonem ,&nbsp;Arzu Cilli ,&nbsp;Farruh Atamurotov ,&nbsp;Ertan Güdekli","doi":"10.1016/j.cjph.2024.11.002","DOIUrl":"10.1016/j.cjph.2024.11.002","url":null,"abstract":"<div><div>We explore the motion of particles around a black hole coupled with nonlinear electrodynamics and a cloud of strings and examine the effects of the parameters of the black hole on the motion of particles. This black hole spacetime consists of five parameters, <span><math><mi>M</mi></math></span> the mass of the black hole, <span><math><mi>α</mi></math></span> the deviation parameters that determine the deviation from the Bardeen black hole, <span><math><mi>Q</mi></math></span> the magnetic charge, <span><math><mi>β</mi></math></span> which describes the cloud of strings, and the parameter <span><math><mi>K</mi></math></span> which describes the cosmological constant. We investigate the effect of these involved parameters on different physical quantities like horizon structure, effective potential, specific energy, angular momentum, innermost stable circular orbit and trajectories. Effective force is also discussed within the scope of different values of these involved parameters. We explore the oscillatory motion of neutral particles by perturbing the equations of motion near the stable circular orbits. Frequencies measured by local and distant observers are also calculated for the different choices of the involved parameters. Interestingly, Periastron precession is also investigated for the considered black hole solution. Lastly, we analyze the collision of two neutral test particles. All the investigated results are summarized with physically required behavior.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 1-17"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Enhanced ammonia gas sensing response of Al-hyperdoped black silicon sensor at room temperature","authors":"Yuan Li ,&nbsp;Guojin Feng ,&nbsp;Xiaolong Liu ,&nbsp;Hua Li ,&nbsp;Binbin Dong ,&nbsp;Li Zhao","doi":"10.1016/j.cjph.2024.12.013","DOIUrl":"10.1016/j.cjph.2024.12.013","url":null,"abstract":"<div><div>Al-hyperdoped black silicon (Al-BSi) is prepared by femtosecond laser-assisted chemical etching, and the material surface was characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The gas sensing performance of the Al-BSi sensor to NH₃ at room temperature was systematically studied, and the sensor has the characteristics of high responsivity, fast response speed, good selectivity, and long-term durability. The NH₃ gas sensing ability is effectively enhanced by the introduction of Al dopants, and the responsivity is more than 1.76 times higher than that without Al hyperdoping. In addition, the band structure of the Al-hyperdoped layer was calculated using first principles, and the potential mechanism of the enhanced responsivity of the Al-BSi sensor was proposed. These results are helpful for the development of high-precision and high-reliability gas sensors based on Al-BSi, opening up potential applications in different fields such as environmental monitoring and industrial safety.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 381-388"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"First-principles study on the structural, mechanical and optoelectronic properties of the hydrogenated and fluorinated dumbbell silicene monolayers and their vertical heterostructures","authors":"Gang Guo ,&nbsp;Fuming Du ,&nbsp;Gencai Guo ,&nbsp;Ping Li","doi":"10.1016/j.cjph.2024.12.029","DOIUrl":"10.1016/j.cjph.2024.12.029","url":null,"abstract":"<div><div>Using first-principles calculations, we systematically investigate the structural, mechanical, and optoelectronic properties of hydrogenated and fluorinated dumbbell silicene (DB-SiH and DB-SiF) monolayers, as well as their vertical heterostructures. Ab initio molecular dynamics (AIMD) calculations demonstrate that both the DB-SiH and DB-SiF monolayers, along with their heterostructures, exhibit excellent structural and thermal stability. Furthermore, hydrogenation and fluorination can increase the band gap of dumbbell silicene, resulting in a direct band gap of 1.99 eV and an indirect band gap of 1.55 eV, respectively. The work function of dumbbell silicene can be effectively tuned by the chemical functionalization. The DB-SiH/DB-SiF heterostructures display direct band gap characteristics and a typical type-II band alignment. Notably, the significant charge transfer from DB-SiH to DB-SiF induces a built-in electric field at the interface of the heterostructures, which facilitates the separation of electrons and holes. Additionally, the DB-SiH/DB-SiF heterostructures exhibit enhanced visible light absorption coefficients compared to those of the individual monolayers. The interesting findings suggest that these novel structures hold valuable potential for applications in optoelectronics.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 564-576"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"MHD flow and heat transfer of nanotriple (Cu–Al2O3–Ag): Exact solutions","authors":"Waqar Khan Usafzai ,&nbsp;Nur Syahirah Wahid ,&nbsp;Norihan Md Arifin ,&nbsp;Emad H. Aly","doi":"10.1016/j.cjph.2024.11.029","DOIUrl":"10.1016/j.cjph.2024.11.029","url":null,"abstract":"<div><div>This work presents an in-depth analytical study of the flow and heat transfer characteristics of a nanotriple fluid system comprising copper, alumina, and silver nanoparticles, over a permeable, elastic, and deformable surface, subject to magnetohydrodynamics (MHD) and velocity slip conditions. Unlike many emerging numerical treatments of water-based nanotriple fluids, the primary objective is to derive exact, closed-form solutions, providing a substantial contribution to the analytical understanding of such complex systems. A unique aspect of this investigation is the identification of multiple algebraic-type solutions for the stretching/shrinking sheet problem, yielding dual solutions under injection and a single solution under suction conditions. In addition, critical numbers are identified as thresholds delineating the boundaries for the existence or absence of solutions. It is found that the number of solutions increases as the magnetic force strength decreases. Dual solutions are observed for both skin friction and thermal gradient in the exponential and algebraic cases. These analytical findings are further reinforced by extensive numerical computations, which offer robust validation of the exact solutions derived. Additionally, stability analysis is carried out in order to determine the stability of solutions, where the first branch demonstrates stability, and the second branch is unstable, highlighting the distinct behaviors within the solution branches.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"93 ","pages":"Pages 56-74"},"PeriodicalIF":4.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}