Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130182
Zhonghua Hu , Aocheng Yang , Suyong Xu , Nan Li , Qin Wu , Yunzhou Sun
Physics-Informed Neural Networks (PINNs) have established a strong track record in addressing partial differential equations, catering to both predictive (forward) and analytical (inverse) challenges. Building upon the PINN framework, parallel hard-constraint physics-informed neural networks (phPINN) have been effectively utilized to tackle the forward and inverse issues associated with the generalized nonlinear Schrödinger–Maxwell–Bloch (GNLS-MB) equations within the context of optical fibers in this work. In the realm of forward problems, the phPINN model has adeptly forecasted three distinct soliton dynamic scenarios, each shaped by its unique set of initial and boundary conditions. Shifting focus to inverse problems, the method evaluates the parameters of the GNLS-MB equation by leveraging training datasets that encompass varying levels of noise, initial conditions, and solution configurations. The findings demonstrate the phPINN method's capability to effectively handle both forward and inverse problems related to the three-component coupled high-order generalized nonlinear Schrödinger equations.
{"title":"Prediction of soliton evolution and parameters evaluation for a high-order nonlinear Schrödinger–Maxwell–Bloch equation in the optical fiber","authors":"Zhonghua Hu , Aocheng Yang , Suyong Xu , Nan Li , Qin Wu , Yunzhou Sun","doi":"10.1016/j.physleta.2024.130182","DOIUrl":"10.1016/j.physleta.2024.130182","url":null,"abstract":"<div><div>Physics-Informed Neural Networks (PINNs) have established a strong track record in addressing partial differential equations, catering to both predictive (forward) and analytical (inverse) challenges. Building upon the PINN framework, parallel hard-constraint physics-informed neural networks (phPINN) have been effectively utilized to tackle the forward and inverse issues associated with the generalized nonlinear Schrödinger–Maxwell–Bloch (GNLS-MB) equations within the context of optical fibers in this work. In the realm of forward problems, the phPINN model has adeptly forecasted three distinct soliton dynamic scenarios, each shaped by its unique set of initial and boundary conditions. Shifting focus to inverse problems, the method evaluates the parameters of the GNLS-MB equation by leveraging training datasets that encompass varying levels of noise, initial conditions, and solution configurations. The findings demonstrate the phPINN method's capability to effectively handle both forward and inverse problems related to the three-component coupled high-order generalized nonlinear Schrödinger equations.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130182"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130171
Sergey P. Vyatchanin , Andrey B. Matsko
Maximal sensitivity of classical force detectors utilizing nonlinear opto-mechanical transducers is generally defined by the standard quantum limit resulting from the contamination of the detected signal with noncommuting quantum noises. This restriction can be circumvented by the optimal detection protocols. We here show theoretically that interrogating a resonant opto-mechanical displacement transducer with a strongly nondegenerate dichromatic optical probe enables a quantum back-action evading measurement of a classical force acting on the mechanical oscillator being a part of the opto-mechanical transducer.
{"title":"Broadband variational measurement of a classical force using strongly nondegenerate dichromatic optical pump","authors":"Sergey P. Vyatchanin , Andrey B. Matsko","doi":"10.1016/j.physleta.2024.130171","DOIUrl":"10.1016/j.physleta.2024.130171","url":null,"abstract":"<div><div>Maximal sensitivity of classical force detectors utilizing nonlinear opto-mechanical transducers is generally defined by the standard quantum limit resulting from the contamination of the detected signal with noncommuting quantum noises. This restriction can be circumvented by the optimal detection protocols. We here show theoretically that interrogating a resonant opto-mechanical displacement transducer with a strongly nondegenerate dichromatic optical probe enables a quantum back-action evading measurement of a classical force acting on the mechanical oscillator being a part of the opto-mechanical transducer.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130171"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130170
Jithin G. Krishnan, Harikrishnan K J, Amit Kumar Pal
In a star-network of qubits interacting via Heisenberg interaction of XYZ-type, we demonstrate a logarithmic growth of the localizable bipartite peripheral entanglement with increasing periphery-size and vanishing xy-anisotropy. This feature disappears when xy-anisotropy becomes non-zero, exhibiting an anisotropy effect, which can be negated by taking the system out of equilibrium by a qubit-local magnetic field. In the large-center and the competing-center limits of the model, the behavior of LBPE is qualitatively different from that of the large-periphery limit. Also, the bipartite peripheral entanglement computed via a partial trace-based approach behaves qualitatively similarly to the LBPE in the large periphery limit, while in the other two limits, it behaves differently. We further consider the generalized description of localizable entanglement using unsharp measurements, and demonstrate that the logarithmic growth of LBPE is present for all noise strengths in the large-periphery limit, while in the competing-center limit, it does not.
{"title":"Logarithmic growth of peripheral entanglement concentrated via noisy measurements in a star network of spins","authors":"Jithin G. Krishnan, Harikrishnan K J, Amit Kumar Pal","doi":"10.1016/j.physleta.2024.130170","DOIUrl":"10.1016/j.physleta.2024.130170","url":null,"abstract":"<div><div>In a star-network of qubits interacting via Heisenberg interaction of XYZ-type, we demonstrate a logarithmic growth of the localizable bipartite peripheral entanglement with increasing periphery-size and vanishing xy-anisotropy. This feature disappears when xy-anisotropy becomes non-zero, exhibiting an anisotropy effect, which can be negated by taking the system out of equilibrium by a qubit-local magnetic field. In the large-center and the competing-center limits of the model, the behavior of LBPE is qualitatively different from that of the large-periphery limit. Also, the bipartite peripheral entanglement computed via a partial trace-based approach behaves qualitatively similarly to the LBPE in the large periphery limit, while in the other two limits, it behaves differently. We further consider the generalized description of localizable entanglement using unsharp measurements, and demonstrate that the logarithmic growth of LBPE is present for all noise strengths in the large-periphery limit, while in the competing-center limit, it does not.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130170"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130160
Zhengyong Song , Denggui Fan , Songan Hou , Qingyun Wang
Cholinergic inputs from the medial septum (MS) affect hippocampal memory during sleep. However, computational modeling of sleep transitions is currently lacking. Here, we use eight coupled rate equations to build a septo-hippocampal cholinergic network. The numerical results indicate that enhanced cholinergic inputs in the model can effectively suppress hippocampal ripple oscillations and shift to theta states. This exchange of dominant rhythms reflects sleep state transitions and corresponds to the results of physiological experiments. By analyzing the dynamical mechanisms underlying this transition, we found that this change originates from a bifurcation phenomenon within the hippocampal network. Additionally, we found that the adaptive gain parameter can effectively modulate the up-state oscillatory activity of the hippocampal network and exhibits greater sensitivity during rapid eye movement (REM) sleep. These results will bring possible insights into computational characterizations and transformations of different sleep states, and provide a theoretical basis for neuromodulation in memory formation.
{"title":"The analysis for the transition dynamics of sleep states through the driving effects of the cholinergic inputs to hippocampal oscillations","authors":"Zhengyong Song , Denggui Fan , Songan Hou , Qingyun Wang","doi":"10.1016/j.physleta.2024.130160","DOIUrl":"10.1016/j.physleta.2024.130160","url":null,"abstract":"<div><div>Cholinergic inputs from the medial septum (MS) affect hippocampal memory during sleep. However, computational modeling of sleep transitions is currently lacking. Here, we use eight coupled rate equations to build a septo-hippocampal cholinergic network. The numerical results indicate that enhanced cholinergic inputs in the model can effectively suppress hippocampal ripple oscillations and shift to theta states. This exchange of dominant rhythms reflects sleep state transitions and corresponds to the results of physiological experiments. By analyzing the dynamical mechanisms underlying this transition, we found that this change originates from a bifurcation phenomenon within the hippocampal network. Additionally, we found that the adaptive gain parameter can effectively modulate the up-state oscillatory activity of the hippocampal network and exhibits greater sensitivity during rapid eye movement (REM) sleep. These results will bring possible insights into computational characterizations and transformations of different sleep states, and provide a theoretical basis for neuromodulation in memory formation.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130160"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130138
Kenta Ohira , Toru Ohira
In this study, we introduce and explore a delay differential equation that lends itself to explicit solutions in the Fourier-transformed space. Through the careful alignment of the initial function, we can construct a highly accurate solution to the equation. These findings open new avenues for understanding delay systems, demonstrating the efficacy of Fourier transform techniques in capturing transient oscillatory dynamics.
{"title":"Solving a delay differential equation through the Fourier transform","authors":"Kenta Ohira , Toru Ohira","doi":"10.1016/j.physleta.2024.130138","DOIUrl":"10.1016/j.physleta.2024.130138","url":null,"abstract":"<div><div>In this study, we introduce and explore a delay differential equation that lends itself to explicit solutions in the Fourier-transformed space. Through the careful alignment of the initial function, we can construct a highly accurate solution to the equation. These findings open new avenues for understanding delay systems, demonstrating the efficacy of Fourier transform techniques in capturing transient oscillatory dynamics.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130138"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-28DOI: 10.1016/j.physleta.2024.130159
Long Li , Shiwen Sun , Li Wang
In recent years, the interaction between information diffusion and epidemic spreading in higher-order networks has been a hot research topic. Previous study has revealed that individual emotions played a significant role in epidemic spreading, which deserves further study in multilayer networks with higher-order interactions. Thus, this paper proposes a two-layer network model that considers the effect of both individual emotions and 2-simplex states. In the virtual layer, information diffusion is affected by the state of 2-simplex and individual's emotion state simultaneously. Meanwhile, epidemic spreading occurs in the physical layer through pairwise interactions. Theoretical analysis based on Micro-Markov Chain Approach (MMCA) and numerical simulations based on Monte-Carlo (MC) method are performed. Our findings demonstrate that individual emotions can inhibit the spread of epidemics and 2-simplex states indirectly influence epidemic spreading through controlling the additional information transmission capacity in the upper layer.
{"title":"The impact of individual emotions and 2-simplex states on the spread of epidemics in multilayer networks","authors":"Long Li , Shiwen Sun , Li Wang","doi":"10.1016/j.physleta.2024.130159","DOIUrl":"10.1016/j.physleta.2024.130159","url":null,"abstract":"<div><div>In recent years, the interaction between information diffusion and epidemic spreading in higher-order networks has been a hot research topic. Previous study has revealed that individual emotions played a significant role in epidemic spreading, which deserves further study in multilayer networks with higher-order interactions. Thus, this paper proposes a two-layer network model that considers the effect of both individual emotions and 2-simplex states. In the virtual layer, information diffusion is affected by the state of 2-simplex and individual's emotion state simultaneously. Meanwhile, epidemic spreading occurs in the physical layer through pairwise interactions. Theoretical analysis based on Micro-Markov Chain Approach (MMCA) and numerical simulations based on Monte-Carlo (MC) method are performed. Our findings demonstrate that individual emotions can inhibit the spread of epidemics and 2-simplex states indirectly influence epidemic spreading through controlling the additional information transmission capacity in the upper layer.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"531 ","pages":"Article 130159"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-27DOI: 10.1016/j.physleta.2025.130293
Emmanuel Yomba
This study explores a (3+1)-dimensional variable-coefficient partially nonlocal coupled nonlinear Schrödinger (NLS) model, revealing its dimensional reduction to a (2+1)-dimensional constant-coefficient analog. This transformation yields analytical solutions that manifest as double-breathers with Hermite-Gaussian envelopes. Focusing on the dynamic characteristics of these double-breathers, the research emphasizes their ring-like or cylinder-like structures, particularly in systems with exponential diffraction and gain, along with constant-type chirp and phases. Key parameters, such as the radius parameter R and thickness parameter ω, significantly influence the size, shape, and structural intricacies of the double-breathers. Additionally, Hermite parameters p and n allow for the formation of layered structures along the z-axis, enriching the wave dynamics. The integration of gain or loss phenomena links theoretical insights with practical applications, enhancing the relevance of the findings in real-world scenarios.
{"title":"Ring-like double-breathers in the partially nonlocal medium with different diffraction characteristics in both directions under the influence of external potential and gain/loss","authors":"Emmanuel Yomba","doi":"10.1016/j.physleta.2025.130293","DOIUrl":"10.1016/j.physleta.2025.130293","url":null,"abstract":"<div><div>This study explores a (3+1)-dimensional variable-coefficient partially nonlocal coupled nonlinear Schrödinger (NLS) model, revealing its dimensional reduction to a (2+1)-dimensional constant-coefficient analog. This transformation yields analytical solutions that manifest as double-breathers with Hermite-Gaussian envelopes. Focusing on the dynamic characteristics of these double-breathers, the research emphasizes their ring-like or cylinder-like structures, particularly in systems with exponential diffraction and gain, along with constant-type chirp and phases. Key parameters, such as the radius parameter <em>R</em> and thickness parameter <em>ω</em>, significantly influence the size, shape, and structural intricacies of the double-breathers. Additionally, Hermite parameters <em>p</em> and <em>n</em> allow for the formation of layered structures along the z-axis, enriching the wave dynamics. The integration of gain or loss phenomena links theoretical insights with practical applications, enhancing the relevance of the findings in real-world scenarios.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130293"},"PeriodicalIF":2.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-27DOI: 10.1016/j.physleta.2025.130306
Ammar A. Kadhim , Jabbar M. Khalaf Al-zyadi , H. Sedghi
This work uses first-principles simulations to investigate the electrical and optical characteristics of CrAs in bulk and monolayer forms. The alloy has a total magnetic moment of 3 μB/f.u.. The alloy is a stable binary Heusler alloy, exhibiting half-metallic ferromagnetic characteristics. According to the Slater-Pauling rule (Mt=Zt-8), the optimal lattice constants for the bulk and monolayer forms are 4.01 and 3.56 Å, respectively. A direct band gap of 1.76 eV is seen in the bulk configuration of CrAs, but a direct band gap of 1.56 eV is seen in the monolayer structure. The elastic constant study verifies the mechanical stability of the alloy. We computed the dielectric function and absorption coefficient as well as the alloy's optical spectra in the energy range of 0–15 eV. Optoelectronics and spintronics show promise with half-metals. Under electric fields of E = +0.2 V/nm and E = -0.2 V/nm, the monolayer displayed half-metallic characteristics; however, at E = +0.4 V/nm and E = -0.4 V/nm, it did not.
{"title":"Investigating the electronic, optical, and elastic properties of bulk and monolayer CrAs under an electric field effect","authors":"Ammar A. Kadhim , Jabbar M. Khalaf Al-zyadi , H. Sedghi","doi":"10.1016/j.physleta.2025.130306","DOIUrl":"10.1016/j.physleta.2025.130306","url":null,"abstract":"<div><div>This work uses first-principles simulations to investigate the electrical and optical characteristics of CrAs in bulk and monolayer forms. The alloy has a total magnetic moment of 3 μ<sub>B</sub>/f.u.. The alloy is a stable binary Heusler alloy, exhibiting half-metallic ferromagnetic characteristics. According to the Slater-Pauling rule (Mt=Zt-8), the optimal lattice constants for the bulk and monolayer forms are 4.01 and 3.56 Å, respectively. A direct band gap of 1.76 eV is seen in the bulk configuration of CrAs, but a direct band gap of 1.56 eV is seen in the monolayer structure. The elastic constant study verifies the mechanical stability of the alloy. We computed the dielectric function and absorption coefficient as well as the alloy's optical spectra in the energy range of 0–15 eV. Optoelectronics and spintronics show promise with half-metals. Under electric fields of <em>E</em> = +0.2 V/nm and <em>E</em> = -0.2 V/nm, the monolayer displayed half-metallic characteristics; however, at <em>E</em> = +0.4 V/nm and <em>E</em> = -0.4 V/nm, it did not.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130306"},"PeriodicalIF":2.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-27DOI: 10.1016/j.physleta.2025.130308
Qiang Li, Zhao Yang
This paper explores the effects of orbital angular momentum (OAM) and phase sensitivity in Three-Wave Mixing (TWM) processes within a quantum dot (QD) system. We analyze the efficiency, spatial, and phase characteristics of the generated TWM beam as influenced by varying control beam parameters. Our results demonstrate that the efficiency of the TWM beam exhibits a double-peak structure, with increased tunneling enhancing the efficiency at detuning values away from resonance. Additionally, the evolution of efficiency during beam propagation shows distinct behaviors depending on the tunneling parameter, with larger values initially increasing efficiency before slightly decreasing, while smaller values result in a steady increase. The phase sensitivity of the QD system allows for spatially dependent effects, as evidenced by the control beam's spatial profile being transferred to the generated TWM beam. The intensity profiles reveal that a Gaussian control beam results in a central peak, whereas vortex beams with nonzero OAM induce doughnut-shaped intensity profiles with zero central intensity. The observed phenomena are attributed to the closed-loop structure of the QD system enabled by electron tunneling, which preserves and transfers the spatial and phase attributes of the control beam to the TWM beam. These findings highlight the potential for precise control over TWM beams through phase and spatial modulation, with implications for advanced optical applications such as beam shaping, imaging, and communication.
{"title":"Efficient beam spatial profiles via three-wave mixing in tunneling quantum dots","authors":"Qiang Li, Zhao Yang","doi":"10.1016/j.physleta.2025.130308","DOIUrl":"10.1016/j.physleta.2025.130308","url":null,"abstract":"<div><div>This paper explores the effects of orbital angular momentum (OAM) and phase sensitivity in Three-Wave Mixing (TWM) processes within a quantum dot (QD) system. We analyze the efficiency, spatial, and phase characteristics of the generated TWM beam as influenced by varying control beam parameters. Our results demonstrate that the efficiency of the TWM beam exhibits a double-peak structure, with increased tunneling enhancing the efficiency at detuning values away from resonance. Additionally, the evolution of efficiency during beam propagation shows distinct behaviors depending on the tunneling parameter, with larger values initially increasing efficiency before slightly decreasing, while smaller values result in a steady increase. The phase sensitivity of the QD system allows for spatially dependent effects, as evidenced by the control beam's spatial profile being transferred to the generated TWM beam. The intensity profiles reveal that a Gaussian control beam results in a central peak, whereas vortex beams with nonzero OAM induce doughnut-shaped intensity profiles with zero central intensity. The observed phenomena are attributed to the closed-loop structure of the QD system enabled by electron tunneling, which preserves and transfers the spatial and phase attributes of the control beam to the TWM beam. These findings highlight the potential for precise control over TWM beams through phase and spatial modulation, with implications for advanced optical applications such as beam shaping, imaging, and communication.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130308"},"PeriodicalIF":2.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-27DOI: 10.1016/j.physleta.2025.130307
Xiaodong Wen , Hongqiao Jiang , Ningdong Hu , Chao Luo
Underwater acoustic absorbing coatings are typically coated on submarine hulls to reduce the risk of being detected by hostile sonars. This paper presents a novel solid-liquid-gas multi-cavity structure for underwater sound absorption. An acoustic-structural coupling analysis is then performed on the deformed structure to explore how geometric parameters, hydrostatic pressure, metal frames, and mass-core influence sound absorption performance. The study also examines the sound absorption mechanism and the power dissipation density distribution in the solid and liquid components. Results indicate that with only 20 mm thickness, the proposed acoustic-absorbing coating shows excellent hydrostatic pressure resistance and offers outstanding low frequency and broadband acoustic absorption at a frequency range of 13 - 10,000 Hz. Meanwhile, the coating indicates strong angular adaptability for incident acoustic waves. This study offers a theoretical reference for the design and engineering application of ultra-thin, low-frequency, broadband underwater acoustic absorbing coating under hydrostatic pressure.
{"title":"A novel underwater acoustic absorbing coating for low-frequency and broadband sound based on liquid-solid synergistic mechanism","authors":"Xiaodong Wen , Hongqiao Jiang , Ningdong Hu , Chao Luo","doi":"10.1016/j.physleta.2025.130307","DOIUrl":"10.1016/j.physleta.2025.130307","url":null,"abstract":"<div><div>Underwater acoustic absorbing coatings are typically coated on submarine hulls to reduce the risk of being detected by hostile sonars. This paper presents a novel solid-liquid-gas multi-cavity structure for underwater sound absorption. An acoustic-structural coupling analysis is then performed on the deformed structure to explore how geometric parameters, hydrostatic pressure, metal frames, and mass-core influence sound absorption performance. The study also examines the sound absorption mechanism and the power dissipation density distribution in the solid and liquid components. Results indicate that with only 20 mm thickness, the proposed acoustic-absorbing coating shows excellent hydrostatic pressure resistance and offers outstanding low frequency and broadband acoustic absorption at a frequency range of 13 - 10,000 Hz. Meanwhile, the coating indicates strong angular adaptability for incident acoustic waves. This study offers a theoretical reference for the design and engineering application of ultra-thin, low-frequency, broadband underwater acoustic absorbing coating under hydrostatic pressure.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"537 ","pages":"Article 130307"},"PeriodicalIF":2.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}