Chinese Journal of Physics最新文献_第4页

Melnikov analysis of multiple homoclinic orbits in the spring-coupled rotational inverted pendulum 弹簧耦合旋转倒立摆中多个同斜轨道的Melnikov分析

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-18 DOI: 10.1016/j.cjph.2025.12.023

Ran Sun , Jing Li , Shaotao Zhu , Xinxing Zhou

The investigation of chaotic characteristics in multi-well nonlinear systems is one of the key issues for advancing their engineering applications. However, existing studies on the dynamical behaviors of multi-homoclinic orbits and inter-well motions in multistable systems remain insufficient. A spring-coupled rotational inverted pendulum system (SRIP) was established by combining an inverted pendulum and a two-dimensional planar oscillator, enabling the structural multi-stability and homoclinic orbit characteristics to be modulated through parameter adjustments. The equations of motion for both the single-degree-of-freedom(SDOF) and the two-degree-of-freedom(2DOF) SRIP system were derived using Lagrange’s equations. The chaotic response characteristics were then analyzed via the energy and Melnikov functions of homoclinic orbits. The contour plots of energy function for the SDOF SRIP system characterize the topological structures of its phase plane, while the bifurcation characteristics of equilibrium points were examined by analyzing the stability of local extrema in the potential function. Homoclinic bifurcations were depicted by the contours corresponding to the energy levels of unstable equilibrium points. For the 2DOF system, dimensional reduction was performed, and a semi-analytical approach combining Melnikov functions was applied to evaluate the oriented distances between stable and unstable manifolds of various types of homoclinic orbits, thereby characterizing the chaotic responses under perturbations. Numerical simulations validated the analytical results. With increasing coupling stiffness, pitchfork bifurcations of equilibrium points and homoclinic-heteroclinic bifurcations emerge. Under larger excitation amplitudes, both confined and rotational chaos occur, and global characteristics of the attractors were qualitatively analyzed via maximal Lyapunov exponent and Poincar

\overset{´}{e}

maps.

多井非线性系统混沌特性的研究是推进其工程应用的关键问题之一。然而，对于多稳态系统中多同斜轨道和井间运动的动力学行为，目前的研究还不够充分。将一个倒立摆与一个二维平面振子相结合，建立了一个弹簧耦合旋转倒立摆系统（SRIP），通过参数调整实现了结构的多稳定性和同斜轨道特性调制。利用拉格朗日方程推导了单自由度（SDOF）和二自由度（2DOF）系统的运动方程。利用同斜轨道的能量函数和Melnikov函数分析了混沌响应特性。SDOF SRIP系统的能量函数等高线图表征了其相平面的拓扑结构，并通过分析势函数中局部极值的稳定性来考察平衡点的分岔特征。用不稳定平衡点能级对应的等高线来描述同斜分岔。对二自由度系统进行降维处理，采用结合Melnikov函数的半解析方法计算了各类型同斜轨道的稳定流形与不稳定流形之间的取向距离，从而表征了扰动作用下的混沌响应。数值模拟验证了分析结果。随着耦合刚度的增加，平衡点出现干草叉分岔和同斜-异斜分岔。在较大的激励幅值下，发生了受限混沌和旋转混沌，并通过极大Lyapunov指数和Poincare映射定性地分析了吸引子的全局特征。

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引用次数: 0

Photoinduced coexistence of spin-polarized antichiral and chiral edge states enabling defect-induced spin filters 光诱导自旋极化反手性和手性边缘态共存，使缺陷诱导自旋滤波器成为可能

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-18 DOI: 10.1016/j.cjph.2025.12.025

Jia-En Yang , Xiao-Long Lü , En-Jia Ye

Topological edge states are crucial for designing future electronic devices. This study achieves mixed coexisting spin-polarized antichiral and chiral edge states by radiating the upper or lower half of the stanene nanoribbons with off-resonant circularly polarized light. Specifically, the circularly polarized light alters the edge states on one boundary, while those on the other remain unchanged. Unlike the antichiral edge states achieved by the modified Haldane model, these photoinduced antichiral edge states are fragile with narrow nanoribbons but robust with wide ones. This nanoribbon width dependence is mainly because the associated bulk states behave similarly to the inner-edge state, whose robustness is related to the nanoribbon width. Using the mixed coexisting edge states, defect-induced and external-field-induced spin filters are proposed. These edge states and spin filters could prove vital for designing future electronic devices.

拓扑边缘态对未来电子器件的设计至关重要。本研究通过非共振圆偏振光照射stanene纳米带的上半部分或下半部分，获得了混合共存的自旋极化反手性和手性边缘态。具体来说，圆偏振光改变了一个边界上的边缘状态，而另一个边界上的边缘状态保持不变。与改进的Haldane模型得到的反手性边缘态不同，这些光诱导的反手性边缘态在窄纳米带中是脆弱的，而在宽纳米带中是鲁棒的。这种纳米带宽度依赖性主要是因为相关体态的行为与内缘态相似，内缘态的鲁棒性与纳米带宽度有关。利用混合共存边缘态，提出了缺陷诱导自旋滤波器和外场诱导自旋滤波器。这些边缘状态和自旋滤波器对于设计未来的电子设备至关重要。

引用次数: 0

14N-accompanied ternary fission of 256Cf and 258Fm isotopes considering deformation of fragments 考虑碎片变形的256Cf和258Fm同位素的14n伴随三元裂变

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-17 DOI: 10.1016/j.cjph.2025.12.016

Mohsen Saeidi babi, Mohammad Reza Pahlavani

This study investigates the ¹⁴N-accompanied ternary fission of ²⁵⁸Fm and ²⁵⁶Cf isotopes within equatorial geometry, emphasizing the role of fragments deformation. For both isotopes, all fragment combinations with positive Q-values were analyzed using quadrupole (β₂) and hexadecapole (β₄) deformation parameters. The angular dependence of driving potentials and transmission coefficient was calculated across

θ = 0^{\circ}

to 180^∘, with total penetration probabilities derived by integrating over angular configurations. Obtained results for deformed fragments were systematically compared with spherical counterparts to isolate deformation effects. Key results highlight the dominance of configurations involving magic or near-magic nuclei, where deformation significantly enhances penetration probabilities and reduces decay constants. Angular trends reveal suppressed probabilities, mitigated by deformation-induced barrier lowering. Comparisons of calculated results between ²⁵⁶Cf and ²⁵⁸Fm isotopes underscore the universal influence of shell closures and deformation, regardless of parent nucleus mass. These findings advance the understanding of ternary fission dynamics, emphasizing the synergy of nuclear structure, angular geometry, and deformation.

本文研究了14n伴随的258Fm和256Cf同位素在赤道几何结构中的三重裂变，强调了碎片变形的作用。对于这两种同位素，使用四极（β2）和六极（β4）变形参数分析了所有q值为正的片段组合。在θ=0到180°范围内，计算了驱动势和透射系数的角依赖关系，并通过对各角构型积分得出了总穿透概率。将得到的变形碎片的结果与球形碎片进行了系统的比较，以隔离变形的影响。关键结果强调了包含魔法或近魔法原子核的结构的优势，其中变形显着提高了穿透概率并降低了衰变常数。角趋势揭示了被抑制的概率，通过变形引起的势垒降低来减轻。256Cf和258Fm同位素计算结果的比较强调了壳闭合和变形的普遍影响，而不考虑母核质量。这些发现促进了对三元裂变动力学的理解，强调了核结构、角几何和变形的协同作用。

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引用次数: 0

Ultralow contact resistance ohmic contact via self-intercalated InSe heterostructure 通过自插层InSe异质结构实现超低接触电阻欧姆接触

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-15 DOI: 10.1016/j.cjph.2025.12.019

Jiexin Wang , Huan Wang , Xiaojie Liu , Yin Wang , Haitao Yin

Two-dimensional semiconductors are key candidate materials for overcoming the size limitations of silicon-based field-effect transistors; however, their high contact resistance at the interface has become the primary bottleneck restricting the performance of sub-2nm node devices. To address this challenge, we designed a self-intercalated bilayer InSe/monolayer InSe heterostructure and systematically investigated its interfacial and charge transport properties using a combined density functional theory (DFT) and non-equilibrium Green's function (NEGF) approach. Analysis of the interfacial electronic structure revealed that the effective potential in the bulk semiconductor region is higher than at the metal-semiconductor interface. The tunneling barrier between metal and semiconductor vanishes, which significantly enhances carrier injection capability. Moreover, the work function difference between metal and semiconductor induces band realignment at the interface, enabling ohmic contact along the device’s armchair (AC) and zigzag (ZZ) directions. The equilibrium conductance measurements yield remarkably low contact resistances of 40.74 Ω·μm and 52.32 Ω·μm for the ZZ and AC directions, respectively. These values compare favorably with the best-reported contacts in 2D materials and approach the fundamental quantum limit of approximately 30 Ω·μm for monolayer systems. The research outcomes substantiate that the self-intercalation-engineered device architecture provides a groundbreaking strategy for fabricating new-generation nanoelectronics featuring ultralow contact resistance and minimized power dissipation.

二维半导体是克服硅基场效应晶体管尺寸限制的关键候选材料；然而，它们在接口处的高接触电阻已成为限制亚2nm节点器件性能的主要瓶颈。为了解决这一挑战，我们设计了一种自插层双层InSe/单层InSe异质结构，并使用密度泛函理论（DFT）和非平衡格林函数（NEGF）相结合的方法系统地研究了其界面和电荷输运性质。界面电子结构分析表明，块体半导体区域的有效电位高于金属-半导体界面。消除了金属与半导体之间的隧道势垒，显著提高了载流子注入能力。此外，金属和半导体之间的功函数差异在界面处诱导带重新排列，使欧姆接触沿着设备的扶手椅（AC）和之字形（ZZ）方向。平衡电导测量结果显示，在ZZ和AC方向上，接触电阻分别为40.74 Ω·μm和52.32 Ω·μm。这些值与2D材料中报道的最佳接触值相比较有利，并且接近单层系统中约30 Ω·μm的基本量子极限。研究结果表明，自嵌入工程器件架构为制造具有超低接触电阻和最小功耗的新一代纳米电子器件提供了突破性的策略。

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引用次数: 0

The single and double Dirac delta potentials under the assumption of minimal length 最小长度假设下的单狄拉克和双狄拉克δ电位

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-15 DOI: 10.1016/j.cjph.2025.12.014

Yassine Chargui , Anis Dhahbi , Salah Boulaaras , Abdelmalek Boumali

The so-called Generalized Uncertainty Principle (GUP) is an alternative to the Heisenberg uncertainty principle that incorporates the idea of a minimum measurable length scale, often referred to as the Minimal Length (ML). In this paper, we investigate the first-order correction introduced by the GUP to the non-relativistic quantum mechanics of the single and double Dirac Delta Potentials (DDPs) in one dimension. For the single DDP, we show that the direct Schrödinger solution and the Green’s function method yield identical results for both bound and scattering states, clarifying the reasons behind earlier conflicting findings. For the double DDP, we find that the leading GUP correction to bound-state energies and scattering probabilities is of the order of the ML. Considering only this correction, the effect of the GUP is reduced to a slight decrease in the strength of the double DDP.

所谓的广义测不准原理（GUP）是海森堡测不准原理的替代方案，它包含了最小可测量长度尺度的思想，通常被称为最小长度（ML）。在本文中，我们研究了GUP对一维单和双狄拉克δ势（ddp）的非相对论量子力学所引入的一阶修正。对于单个DDP，我们表明直接Schrödinger解和格林函数方法对束缚态和散射态都产生相同的结果，澄清了早期相互矛盾的发现背后的原因。对于双DDP，我们发现对束缚态能量和散射概率的领先GUP校正是ML级的。仅考虑这一校正，GUP的影响被降低为双DDP强度的轻微下降。

引用次数: 0

Research on the broadband radiation-enhanced piezoelectric antenna based on multimodal coupled vibration 基于多模态耦合振动的宽带辐射增强压电天线研究

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-15 DOI: 10.1016/j.cjph.2025.12.017

Yong Zhang, Hongcheng Zhou, Zhongming Yan, Yu Wang

Piezoelectric antennas break through the mutual constraint relationship between traditional antenna wavelength and size, featuring low-frequency miniaturization and high radiation efficiency. However, narrowband and low radiation intensity severely limit the communication distance and channel capacity in practical application scenarios. Therefore, a multi-modal coupled piezoelectric antenna with stacked structure is proposed to enhance the radiation intensity and achieve multi-frequency wideband characteristics. The cavity structure formed by stacking, along with the design of the energy-trapping electrodes can reduce the acoustic propagation losses, and the antenna is capable of high radiation efficiency and multi-frequency operation, while also realize the guiding effect on electromagnetic waves. By integrating the piezoelectric constitutive equations with the equivalent density parameter method, a theoretical model was developed to characterize the heterogeneous properties of electrode regions, revealing the regulatory mechanism by which mass–stiffness coupling influences energy-trapping effect, and the corresponding electromechanical model reveals the radiation enhancement mechanism of the laminated structure on the piezoelectric antenna. The experimental results indicate that the antenna has six operating frequencies, with an effective communication range of 60m. The antenna demonstrates a 3-4 orders higher magnetic field emitting efficiency compared to a conventional loop coil antenna in VLF/LF band. The near-field radiation pattern demonstrates significant directionality (front to back ratio of 12dB).Furthermore, a digital amplitude shift keying (ASK) modulation and frequency-shift keying (FSK) are conducted with a low frequency (LF) carrier signal to enable anti-interference communication. These results demonstrate the enormous potential of the proposed antenna in portable, intelligent, and high-performance wireless communication devices.

压电天线突破了传统天线波长与尺寸的相互约束关系，具有低频小型化和高辐射效率的特点。但在实际应用场景中，窄带和低辐射强度严重限制了通信距离和信道容量。为此，提出了一种叠置结构的多模态耦合压电天线，以增强天线的辐射强度，实现多频宽带特性。通过叠加形成的空腔结构，配合捕能电极的设计，降低了声传播损失，使天线具有高辐射效率和多频工作能力，同时还实现了对电磁波的引导作用。通过将压电本构方程与等效密度参数法进行积分，建立了表征电极区域非均质特性的理论模型，揭示了质量-刚度耦合对能量捕获效应的调控机制，相应的机电模型揭示了压电天线层合结构的辐射增强机理。实验结果表明，该天线具有6个工作频率，有效通信距离为60m。在VLF/LF频段，该天线的磁场发射效率比传统环形线圈天线高3-4个数量级。近场辐射方向图具有明显的方向性（前后比为12dB）。此外，利用低频（LF）载波信号进行数字移幅键控（ASK）调制和移频键控（FSK）以实现抗干扰通信。这些结果证明了所提出的天线在便携式、智能和高性能无线通信设备中的巨大潜力。

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引用次数: 0

Polarization -multiplexing response based on Quasi-BIC in Quasi-flatband 基于准平坦带准bic的偏振复用响应

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-15 DOI: 10.1016/j.cjph.2025.12.018

Ren Guo , Miaofang Zhou , Guangtao Cao , Fan He , Jingfeng Tian , Shuyu Qiao , Hui Yang , Hairong He , Zhiying Zhu , Shaobo Liu , Tao Yu , Min Pan , Hongchao Yi , Gengbiao Lu , Yan Deng , Enduo Gao

Plasmon-induced transparency (PIT) faces limitations in integrated photonics due to low Q factors (<50) and restricted polarization control. This work integrates quasi-bound states in the continuum (QBIC) with guided-mode resonance (GMR), effectively utilizing the material advantages of silicon and silver to achieve the like-plasmon-induced absorption (like-PIA) phenomenon. This approach significantly reduces the losses associated with traditional plasmon-induced absorption (PIA) and overcomes the limitations related to performance and polarization sensitivity. Through symmetry breaking, the structure realizes dual-peak perfect absorption (98.1%/98.2%) and ultra-high Q factors (1076/816) in the near-infrared band, enhancing performance two orders over traditional devices. Band structure analysis reveals a quasi-flat band effect, rendering QBIC-controlled peaks insensitive to multi-parameter dispersion. Crucially, the dual peaks exhibit multiplexing polarization: the polarization-insensitive QBIC peak enables stable self-calibrating sensing, while the GMR-driven peak supports dynamic polarization encoding and band switching, enabling multi-parameter sensing and communication multiplexing. Additionally, the system achieves a 15.1 ps group delay, surpassing existing slow light devices. This breakthrough paves the way for polarization-multiplexed communication, environmental sensing, and multifunctional on-chip photonics.

由于低Q因子（<50）和偏振控制受限，等离子体诱导透明（PIT）在集成光子学中面临限制。本研究将连续介质中的准束缚态（QBIC）与导模共振（GMR）相结合，有效利用硅和银的材料优势，实现了类等离子体诱导吸收（like-PIA）现象。该方法显著降低了传统等离子体诱导吸收（PIA）的损耗，克服了性能和极化灵敏度方面的限制。该结构通过破对称实现了双峰完美吸收（98.1%/98.2%）和近红外波段超高Q因子（1076/816），性能比传统器件提高了两个数量级。波段结构分析揭示了准平坦带效应，使得qbic控制的峰对多参数色散不敏感。关键是，双峰表现出多路复用极化：偏振不敏感的QBIC峰支持稳定的自校准传感，而gmr驱动的峰支持动态极化编码和频带切换，实现多参数传感和通信复用。此外，该系统实现了15.1 ps的组延迟，超过了现有的慢光器件。这一突破为偏振多路通信、环境传感和多功能片上光子学铺平了道路。

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引用次数: 0

Electrical activity of a functional neuron under diverse external stimuli 功能神经元在不同外部刺激下的电活动

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-15 DOI: 10.1016/j.cjph.2025.12.021

Feifei Yang , Kailong Zhu , Xinlin Song , Huiping Yin , Jiangxing Chen

Neurons are the basic functional units of the nervous system, and their electrical activities serve as the core carrier for information encoding and transmission. The response patterns of neurons to external stimuli determine the functions and plasticity of neural circuits, and they are also closely related to various neurological diseases. This study aims to systematically investigate the regulatory effects of different types and intensities of external stimuli on the electrical activities of a functional neuron. This study designs a functional neural circuit to capture the signals of external light and the effects of the magnetic field. And then a functional neuron model and corresponding energy function are obtained by applying Kirchhoff’s current law and Helmholtz’s theorem, respectively. Furthermore, the electrical activities of a functional neuron for different types and intensities of external stimuli (light signals and magnetic fields) are investigated by using the nonlinear dynamics analysis method. Moreover, we design an adaptive control method for exploring the self-regulation and self-repairing characteristics of a neuron. Numerical simulation confirmed that the different electrical activities of a functional neuron are activated under diverse external stimuli, and the coherent resonance and stochastic resonance phenomena can occur, respectively, under the noise light signals and noise magnetic fields. This work provides an important theoretical basis for a deeper understanding of the nervous system's response to external stimulus signals.

神经元是神经系统的基本功能单位，其电活动是信息编码和传递的核心载体。神经元对外部刺激的反应模式决定了神经回路的功能和可塑性，也与各种神经系统疾病密切相关。本研究旨在系统探讨不同类型和强度的外界刺激对功能性神经元电活动的调节作用。本研究设计了一个功能性神经回路来捕捉外部光信号和磁场的影响。然后分别应用Kirchhoff电流定律和Helmholtz定理得到功能神经元模型和相应的能量函数。此外，利用非线性动力学分析方法研究了不同类型和强度的外部刺激（光信号和磁场）对功能神经元电活动的影响。此外，我们设计了一种自适应控制方法来探索神经元的自我调节和自我修复特性。数值模拟证实，在不同的外界刺激下，一个功能神经元的不同电活动被激活，在噪声光信号和噪声磁场下分别可以发生相干共振和随机共振现象。这项工作为深入了解神经系统对外部刺激信号的反应提供了重要的理论基础。

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引用次数: 0

Entropy generation in membrane-actuated pumping of yield-stress fluids in an inclined microchannel: Influence of heat and magnetic fields 在倾斜微通道中膜驱动的屈服应力流体泵送中的熵产生：热和磁场的影响

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-13 DOI: 10.1016/j.cjph.2025.12.012

K.V. Prasad , Hanumesh Vaidya , Mahalingappa Naganur , Rajashekhar V. Choudhari

In this paper, a biomimetic membrane-pumping system is presented that can be used to control the yield-stress fluids (Bingham viscoplastic fluid) in an inclined microchannel, with the synergy between external magnetic fields and thermal radiation. The pump works by having synchronized membrane vibrations forming rhythmic compression and expansion cycles which produce controlled flow. The governing equations are solved using a strong mathematical framework that is based on the lubrication theory and non-dimensional analysis, where solutions are validated numerically using the bvp5c high-fidelity collocation version (MATLAB bvp5c). It is found that the combination of the Bingham number (yield stress), the strength of the magnetic field (Hartmann number), and the inclination of the channels predetermines the flow profiles, thermal transport, and shear stress. A parametric analysis indicates that both the yield stress and magnetic field effects substantially inhibit flow while channel orientation can enhance membrane-actuated flow rates. The results show a 47.43 % reduction in flow through the channel with an increase in Hartmann number from 1 to 3; and when a small Bingham number (0.04) is introduced, flow through the channel is reduced by an additional 10.86 %. Conversely, flow through the channel increases by 77.24 % at an angle of π/4. These findings illustrate that the pumping efficiency will be determined by the interaction of the magnetic dampening, yield stress resistance, and gravitational assistive forces acting on the fluid. The irreversibility of thermodynamics is also measured through entropy generation and the Bejan number. Such findings reveal a trade-off between flow and entropy suppression which is operational, and can be used to design transformative paradigms of microfluidic pump optimization, especially in biomedical and thermal management processes that need to handle complex fluids under thermal and magnetic limitations.

本文提出了一种利用外加磁场和热辐射的协同作用来控制倾斜微通道内屈服应力流体（Bingham粘塑性流体）的仿生膜泵系统。泵的工作原理是通过同步膜振动形成有节奏的压缩和膨胀循环，从而产生受控的流量。利用基于润滑理论和无量纲分析的强大数学框架求解控制方程，并使用bvp5c高保真配置版本（MATLAB bvp5c）对解进行数值验证。研究发现，宾汉姆数（屈服应力）、磁场强度（哈特曼数）和通道倾角的组合预先决定了流动剖面、热输运和剪切应力。参数分析表明，屈服应力和磁场效应都能有效抑制流体流动，而通道取向能提高膜驱动的流速。结果表明：当哈特曼数从1增加到3时，通道内的流量减少了47.43%；当引入一个较小的宾汉姆数（0.04）时，通过通道的流量又减少了10.86%。相反，当角度为π/4时，通过通道的流量增加77.24%。这些发现表明，泵送效率将由磁阻尼、屈服应力阻力和作用在流体上的重力辅助力的相互作用决定。热力学的不可逆性也通过熵生成和贝让数来测量。这些发现揭示了流量和熵抑制之间的权衡，这是可行的，可用于设计微流控泵优化的变革性范例，特别是在需要处理热和磁限制下复杂流体的生物医学和热管理过程中。

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引用次数: 0

Dynamics of heat transfer and electroosmotic flow in a periodic membrane-induced channel with rheological effects 具有流变效应的周期性膜诱导通道中的传热动力学和电渗透流动

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics

Pub Date : 2025-12-13 DOI: 10.1016/j.cjph.2025.12.013

Vinita Goyal, Kushal Sharma

Theoretical analysis of thermo-controlled microfluidic devices provides valuable insights into the mechanism and enhancement of these systems across biomedical diagnostics and chemical applications. Electroosmosis is a fundamental phenomenon that enables the controlled flow of ionic solutions in response to an external electric field, thereby amplifying the pumping flow rate. This study presents an unsteady viscous flow of the Carreau fluid model, whose rheological properties are similar to those of blood in a microchannel, subjected to periodic membrane pumping along with heat transfer. This framework is based on the Navier-Stokes equations, the Poisson equation, along with the velocity slip condition and is further simplified using the lubrication theory and Debye-Hückel linearization. The perturbation series solution method is employed to solve the transformed, dimensionless governing equations together with the corresponding boundary conditions, and the results are presented graphically. The plotted results illustrate that the kinematics of membrane motion generate the transmural pressure, which is controlled by the velocity slip parameter and rheological properties of the fluid. The shear-driven flow leads to a reduction in axial velocity and transmural pressure. Furthermore, mid-channel isotherms are significantly influenced by variations in the Weissenberg and Brinkman numbers.

热控微流控装置的理论分析为这些系统在生物医学诊断和化学应用中的机制和增强提供了有价值的见解。电渗透是一种基本现象，它使离子溶液响应于外电场而控制流动，从而扩大泵送流速。本文提出了一种非定常粘性流动的carcarau流体模型，其流变特性类似于微通道中的血液，在周期性膜泵送的同时进行传热。该框架基于Navier-Stokes方程、泊松方程以及速度滑移条件，并使用润滑理论和debye - h ckel线性化进一步简化。采用摄动级数解法对变换后的无量纲控制方程及其边界条件进行了求解，并以图形形式给出了结果。结果表明，膜的运动产生了跨壁压力，跨壁压力由流体的速度滑移参数和流变特性控制。剪切驱动的流动导致轴向速度和跨壁压力的降低。此外，通道中部等温线受Weissenberg和Brinkman数变化的显著影响。

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引用次数: 0