Chinese Journal of Physics最新文献_第5页

Resonant flow of a stratified fluid influenced by damping over topography 受地形阻尼影响的层状流体的共振流动

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-11 DOI: 10.1016/j.cjph.2025.08.009

Mohammed Daher Albalwi

引用次数: 0

DFT exploration of drug-carrier complex formations along with the combination of Cycloserine (Seromycin) drug and an iron-decorated fullerene 环丝氨酸（丝霉素）药物与铁修饰富勒烯结合时药物载体复合物形成的DFT探索

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-10 DOI: 10.1016/j.cjph.2025.08.013

Chou-Yi Hsu , Mahmoud Mirzaei , Radhwan Abdul Kareem , Shoira Formanova

{"title":"DFT exploration of drug-carrier complex formations along with the combination of Cycloserine (Seromycin) drug and an iron-decorated fullerene","authors":"Chou-Yi Hsu , Mahmoud Mirzaei , Radhwan Abdul Kareem , Shoira Formanova","doi":"10.1016/j.cjph.2025.08.013","DOIUrl":"10.1016/j.cjph.2025.08.013","url":null,"abstract":"<div><div>This work was focused on the exploration of drug-carrier complexes formation along with the combination of Cycloserine (Seromycin); so called CYS, drug and an iron-doped fullerene (FUL) with the formula C<sub>19</sub>Fe for engineering a potential drug delivery platform based on density functional theory (DFT) assessments. CYS is an antibiotic with a wide spectrum of applications, in which its enhancement is crucial for approaching efficient medications. To this point, DFT calculations were preformed to study interactions of CYS and FUL along with the formation of CYS@FUL complexes for exploring a suitable carrier for this well-known drug. Accordingly, structural and electronic features were evaluated for the formations of CYS@FUL complexes, in which strengths of adsorptions were obtained within meaningful values from -20 to -39 kcal/mol for four configurations. The existences of O..Fe, N…Fe, C…Fe, O…C, and H…C interactions were found for the formation of CYS@FUL complexes. Moreover, the electronic features indicated the distinguishability of combination and also a managing role of FUL for the future behaviors of adsorbed CYS counterpart. As a consequence, a potential drug delivery platform was proposed by the formation of CYS@FUL complexes using the carrier role of FUL towards the CYS antibiotic drug.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1101-1109"},"PeriodicalIF":4.6,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889901","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}

引用次数: 0

Synchronization transitions in delay-coupled phase oscillator networks with higher-order interactions 具有高阶相互作用的延迟耦合相位振荡器网络中的同步跃迁

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-09 DOI: 10.1016/j.cjph.2025.07.039

Deivasundari Muthukumar , Atiyeh Bayani , Fahimeh Nazarimehr , Karthikeyan Rajagopal , Gaihui Guo , Sajad Jafari

引用次数: 0

Photoinduced Two-Dimensional Supramolecular Chiral Microstructures with Enhanced Stability 具有增强稳定性的光诱导二维超分子手性微结构

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-08 DOI: 10.1016/j.cjph.2025.08.007

Zhi-Qun Wang , Hung-Lin Chen , Yan-Song Zhang , Ting-Shan Mo , Chia-Rong Lee

{"title":"Photoinduced Two-Dimensional Supramolecular Chiral Microstructures with Enhanced Stability","authors":"Zhi-Qun Wang , Hung-Lin Chen , Yan-Song Zhang , Ting-Shan Mo , Chia-Rong Lee","doi":"10.1016/j.cjph.2025.08.007","DOIUrl":"10.1016/j.cjph.2025.08.007","url":null,"abstract":"<div><div>Periodic microstructures are essential for controlling optical and mechanical properties but remain difficult to fabricate with precision and scalability, and conventional methods are costly and rigid. Thus, self-assembling and tunable alternatives are needed. Stimulus-responsive anisotropic soft matter offers a promising solution because it can spontaneously form micro- and nanoscale periodic superstructures with high tunability for functional device design. However, these superstructures rely on a delicate balance of multiple forces, so they are vulnerable to external perturbations and often have a short lifespan, which is a key challenge in the field. This study investigates photoinduced Helfrich deformation in chiral azobenzene-doped cholesteric liquid crystals (CLCs) and compares the resulting microstructures in systems with and without bent-mesogenic dimers. The dimers exhibit an exceptionally low bend elastic constant that governs the resistance of the LC system to bending deformation. During the cis-trans photoisomerization of chiral azobenzene, stress accumulation due to the shortening of the helical pitch, leading to the formation of a two-dimensional supramolecular chiral microstructure. Furthermore, applying an auxiliary voltage lower than the threshold of the electro-induced Helfrich deformation considerably enhances the stability of the microstructure, and the stabilization effect increases in the samples containing dimers. At voltages lower and higher than the threshold, the microstructures eventually transform into a planar state and a hybrid state with fingerprint and focal conic textures, respectively. This study opens a new avenue for expanding the applicability of Helfrich deformation and provides insights into the stability control of periodic microstructures in soft matter physics, providing valuable reference for the fields of optics and photonics.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1149-1159"},"PeriodicalIF":4.6,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908975","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}

引用次数: 0

Ultracompact multi-mode add-drop multiplexer based on pixelated photonic-like crystals 基于像素化光子晶体的超紧凑多模加丢多路复用器

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-08 DOI: 10.1016/j.cjph.2025.08.005

Junmin Liu , Chuangxin Xie , Keyin Wen , Zhiwei Guan , Zhibin Wu , Huapeng Ye , George Y. Chen , Ze Dong , Shixiang Xu , Dianyuan Fan , Shuqing Chen

{"title":"Ultracompact multi-mode add-drop multiplexer based on pixelated photonic-like crystals","authors":"Junmin Liu , Chuangxin Xie , Keyin Wen , Zhiwei Guan , Zhibin Wu , Huapeng Ye , George Y. Chen , Ze Dong , Shixiang Xu , Dianyuan Fan , Shuqing Chen","doi":"10.1016/j.cjph.2025.08.005","DOIUrl":"10.1016/j.cjph.2025.08.005","url":null,"abstract":"<div><div>The development of integrated photonic systems necessitates ultracompact multi-mode add-drop multiplexers to enable high-density node interconnection communication. Conventional cascaded directional couplers, however, suffer from prolonged coupling lengths and intermodal crosstalk during the evanescent wave coupling progress, imposing fundamental limits on device miniaturization and multi-mode adiabatic conversion. Here, we propose a groundbreaking single-level mode conversion mechanism enabled by pixelated photonic-like crystals. By leveraging subwavelength-scale dielectric scattering units, we achieve simultaneous mode field confinement and phase compensation, reducing the coupling length by two orders of magnitude (to 3.6 μm × 5.4 μm) while suppressing intermodal interference. Benefiting from this design, we demonstrate an ultracompact mode add-drop multiplexer supporting simultaneous add/drop of 1-3 TE modes with the operation broadband ≥ 38 nm and insertion loss < 4 dB. Furthermore, the devices enable routing of 11.25 Tbit/s QPSK-OFDM signals with bit error rates of 10<sup>-5</sup> at -13.5 dBm. This work verifies the feasibility of on-chip communication interconnection through the single-level mode conversion mechanism, offering a versatile solution for integrated photonic networks with potential extensions to LiDAR, quantum key distribution, and neuromorphic photonics.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1285-1292"},"PeriodicalIF":4.6,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921590","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}

引用次数: 0

Overdamped Brownian dynamics in a potential trap under a nonuniform temperature field 非均匀温度场下势阱中的过阻尼布朗动力学

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-08 DOI: 10.1016/j.cjph.2025.07.034

Cin-Hua Pan , Pik-Yin Lai

{"title":"Overdamped Brownian dynamics in a potential trap under a nonuniform temperature field","authors":"Cin-Hua Pan , Pik-Yin Lai","doi":"10.1016/j.cjph.2025.07.034","DOIUrl":"10.1016/j.cjph.2025.07.034","url":null,"abstract":"<div><div>We investigate the dynamics and statistics of a one-dimensional Brownian particle in a potential trap under a spatially nonuniform temperature field. For single minimum harmonic or anharmonic trapping potentials and unimodal temperature field, the Brownian particle can be described by a double-well effective potential with an effective barrier, with the effective potential and the steady-state position distribution derived analytically using the Fokker-Planck equation. The transition rate between the two wells in the effective potential is also derived. In addition, the impact of a nonuniform temperature on the escape kinetics in a double-well potential is also considered with the modified transition rate derived analytically, indicating suppression of the energy barrier and hence enhancement of the transition rate between the two wells. Furthermore, it is demonstrated that a tilted double-well effective potential can be obtained by mismatching the centers of the trapping well and the temperature profile, opening the possibility of constructing a memory erasure device in such a system. The nonequilibrium nature due to the temperature gradient is also discussed in terms of the hidden entropy production, as revealed by the corresponding underdamped dynamics. Numerical simulations of the corresponding Langevin dynamics verify all of these theoretical results.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1316-1327"},"PeriodicalIF":4.6,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996494","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}

引用次数: 0

Effects of electric fields on signaling in autaptic synapse modified Izhikevich neurons 电场对自噬突触修饰的Izhikevich神经元信号传导的影响

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-07 DOI: 10.1016/j.cjph.2025.08.001

Kaijun Wu, Xiangbing Chen , Jiawei Li , Zhaoxue Huang

{"title":"Effects of electric fields on signaling in autaptic synapse modified Izhikevich neurons","authors":"Kaijun Wu, Xiangbing Chen , Jiawei Li , Zhaoxue Huang","doi":"10.1016/j.cjph.2025.08.001","DOIUrl":"10.1016/j.cjph.2025.08.001","url":null,"abstract":"<div><div>This paper is based on the Izhikevich neuron model and studies the influence of the electric field (EF) on the signal detection ability of the neuron system modified by electro-chemical autapses under chaotic environmental conditions. It was found that chaotic resonance occurs under specific conditions in any self-synaptic neuron model, and multiple chaotic resonances (MCR) were observed in the Izhikevich neuron model regardless of whether or not EF was considered. After the introduction of EF, the system exhibits more intense MCR. In addition, when the synaptic time-delay parameter <span><math><mi>τ</mi></math></span> is an integer multiple of the weak periodic signal period <span><math><mi>T</mi></math></span>, multiple chaotic resonance phenomena occur in the electro and excitatoryautaptic neuron system. It is found that the intensity of the chaotic current required for the optimal signal detection of excitatory chemical synapses under the action of EF is significantly lower than that in the scenario without EF. The analysis of the energy consumption of excitatory chemical synapses shows that EF reduces the response threshold of the system to the chaotic current, enabling the neuron to achieve adequate signal amplification with lower energy input. However, in inhibitory chemical synapses, the neuron model suppresses the weak periodic signal period <span><math><mi>T</mi></math></span> and its multiples, which is more evident in the presence of EF. This is because the blocking effect eliminates the chaotic resonance. Therefore, we hope that the discoveries we’ve made can help to shed light on the behavior of the intricate nervous system under the combined influence of the electric field and autapses in a chaotic setting.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1073-1089"},"PeriodicalIF":4.6,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879008","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}

引用次数: 0

Magnetoelectric synergy enabled quad-state memory in Fe3GeTe2/α-In2Se3 dual-ferroic junction Fe3GeTe2/α-In2Se3双铁结的磁电协同四态存储器

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-07 DOI: 10.1016/j.cjph.2025.08.003

Huan Wang , Shan Jiang , Xiaojie Liu , Hui Wang , Haitao Yin

{"title":"Magnetoelectric synergy enabled quad-state memory in Fe3GeTe2/α-In2Se3 dual-ferroic junction","authors":"Huan Wang , Shan Jiang , Xiaojie Liu , Hui Wang , Haitao Yin","doi":"10.1016/j.cjph.2025.08.003","DOIUrl":"10.1016/j.cjph.2025.08.003","url":null,"abstract":"<div><div>This study demonstrates a dual-ferroic tunnel junction (Fe<sub>3</sub>GeTe<sub>2</sub>/α-In<sub>2</sub>Se<sub>3</sub>/Fe<sub>3</sub>GeTe<sub>2</sub>) composed of a two-dimensional ferroelectric α-In<sub>2</sub>Se<sub>3</sub> barrier layer and ferromagnetic Fe<sub>3</sub>GeTe<sub>2</sub> (FGT) electrodes. Four distinct nonvolatile resistance states are achieved by synergistically controlling ferroelectric polarization direction (P↑/P↓) and magnetic spin alignment (parallel/antiparallel). Ferroelectric polarization reversal dynamically modulates the interfacial barrier height, establishing a low-resistance channel in the P↑ state via reduced tunneling and Schottky barriers. This mechanism enhances the current by one order of magnitude compared to the P↓ configuration, while achieving near-perfect spin-polarized transport with a spin polarization (SP) exceeding 95 %. Furthermore, the P↓ state exhibits a maximum tunneling magnetoresistance (TMR) of 144 %, whereas the parallel magnetization state demonstrates an exceptional tunneling electroresistance (TER) of 2300 %. These results reveal a synergistic amplification effect arising from ferroelectric-ferromagnetic coupling, advancing the integration of spintronics and multiferroic heterostructures for next-generation memory and logic technologies.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1492-1501"},"PeriodicalIF":4.6,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018996","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}

引用次数: 0

Adsorption properties and sensing capabilities of pristine and Stone–Wales defected BN nanosheets for lung cancer VOC biomarkers: A DFT investigation 原始和Stone-Wales缺陷BN纳米片对肺癌VOC生物标志物的吸附特性和传感能力：一项DFT研究

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-05 DOI: 10.1016/j.cjph.2025.07.036

Alaa M. Khudhair , Hasan Ali Dhahi

{"title":"Adsorption properties and sensing capabilities of pristine and Stone–Wales defected BN nanosheets for lung cancer VOC biomarkers: A DFT investigation","authors":"Alaa M. Khudhair , Hasan Ali Dhahi","doi":"10.1016/j.cjph.2025.07.036","DOIUrl":"10.1016/j.cjph.2025.07.036","url":null,"abstract":"<div><div>Lung cancer (LC) continues to be a predominant cause of global mortality, with early identification being a significant challenge due to the constraints of existing detection technologies, which are frequently invasive, expensive, and inaccessible. This study utilized density functional theory (DFT) to systematically examine the efficacy of both pristine and Stone–Wales (SW) defect-engineered BN nanosheets as selective biosensors for the early detection of LC-associated volatile organic compounds (VOCs): benzene (C₆H₆), isoprene (C₅H₈), and methyl-cyclopentane (C₆H₁₂). Thorough simulations demonstrated that the incorporation of software faults markedly modifies the electrical structure of BN nanosheets, thereby improving their sensitivity and selectivity for the target VOCs. The adsorption energy estimates (E<sub>ads</sub>) were consistently negative across all systems, signifying stable and exothermic interactions. The adsorption energies of benzene, isoprene, and methyl-cyclopentane on virgin BN were −0.787 eV, −0.893 eV, and −0.740 eV, respectively; for the BN-SW substrate, the values were −0.770 eV, −0.839 eV, and −0.603 eV, respectively. These findings validate the thermodynamic favorability and strong interaction between the VOCs and the sensor surfaces. The computed global reactivity descriptors and recovery durations further substantiate the efficacy of BN and BN-SW nanosheets for real-time biosensing. This study illustrates that both pristine and defect-engineered BN nanosheets, especially those with Stone–Wales defects, present highly promising platforms for the early detection of lung cancer biomarkers, facilitating the future creation of efficient, non-invasive diagnostic devices.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 46-58"},"PeriodicalIF":4.6,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097622","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}

引用次数: 0

Entropy generation analysis in unsteady flow of micropolar fluid through anisotropic porous media 微极流体在各向异性多孔介质中非定常流动的熵生成分析

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-05 DOI: 10.1016/j.cjph.2025.07.028

Sneha Jaiswal , Nitisha Yadav , Pramod Kumar Yadav , Bhupesh Dutt Sharma

{"title":"Entropy generation analysis in unsteady flow of micropolar fluid through anisotropic porous media","authors":"Sneha Jaiswal , Nitisha Yadav , Pramod Kumar Yadav , Bhupesh Dutt Sharma","doi":"10.1016/j.cjph.2025.07.028","DOIUrl":"10.1016/j.cjph.2025.07.028","url":null,"abstract":"<div><div>In this study, the authors have addressed the time-dependent flow of micropolar fluid in a channel filled with an anisotropic porous medium. The novelty of the present investigation lies in using a complex porous medium along with the slip conditions on both geometry boundaries and analysis of entropy generation in the micropolar fluid flow through anisotropic porous media. The non-linearity of the governing equations has been solved by the finite difference method, and the solution obtained is stable and convergent. The numerical solution of the dependent variable has been utilized to determine the variation in the flow profile due to the porous medium’s complex nature, to see the effect of slip boundary conditions, and the effect of non-Newtonian fluid parameters. The variation in the velocity profile and temperature profile with respect to the flow parameters is satisfied with the physics of the flow and the medium. An important conclusion made is that the entropy generation in the flow of micropolar fluid through anisotropic porous media can be reduced by raising the anisotropic angle and anisotropic permeability parameter, which can be utilized for the modeling of heat exchangers, microfluidic devices, thermal management in porous microchannels, porous solar collectors, and many more.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 998-1023"},"PeriodicalIF":4.6,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852343","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}

引用次数: 0