Optical and Quantum Electronics最新文献_第8页

Power-dependent photoluminescence enhancement in Ni, Cu, and Co-doped ZnO nanoparticles for optoelectronic device applications Ni， Cu和共掺杂ZnO纳米颗粒在光电器件应用中的功率依赖性光致发光增强

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-16 DOI: 10.1007/s11082-025-08336-4

Imen Ben Elkamel, Nejeh Hamdaoui, Amine Mezni, Ridha Ajjel, Lotfi Beji

引用次数: 0

Surface topography and emission properties of Cr3+ ions in zinc–bismuth–borate glass ceramics for solid state lighting applications 固体照明用硼酸锌铋玻璃陶瓷中Cr3+离子的表面形貌和发射特性

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-16 DOI: 10.1007/s11082-025-08440-5

Adepu Navalika, Linganaboina Srinivasa Rao, N. Pothanna, T. S. Krishna Kumar

{"title":"Surface topography and emission properties of Cr3+ ions in zinc–bismuth–borate glass ceramics for solid state lighting applications","authors":"Adepu Navalika, Linganaboina Srinivasa Rao, N. Pothanna, T. S. Krishna Kumar","doi":"10.1007/s11082-025-08440-5","DOIUrl":"10.1007/s11082-025-08440-5","url":null,"abstract":"<div>Melt quenching method followed by one step heat treatment was employed to prepare five glass ceramics of composition 70B2O3–29 Bi2O3–(1-x)Cr2O3: xZnO (where x = 0.00, 0.25, 0.5, 0.75, and 1.00) in mol %. The surface topography, Vicker’s hardness, and luminescence properties of the prepared glasses have been investigated as a function of concentration of ZnO in the composition. Crystal size (thru watershed and threshold models) and roughness parameters of the synthesized glass surfaces were calculated by using Gwyddion software application. Higher number of crystals and lower average crystal size were observed in watershed model and threshold model at x = 0.50 mol %. X-ray diffraction analysis confirms the formation of crystalline phases such as Bi4B2O9, Bi6B10O24, ZnB2O4, ZnB4O7, ZnBi2O4, spinel-type ZnCr2O4, etc. The emission spectra have exhibited two distinct emission bands centered at ≈ 550 nm and ≈ 650 nm attributed to electronic transitions of Cr3+ (3d3) ions. CIE color coordinates (x, y) place these glass ceramics in the green-yellow region of the visible spectrum. This chromatic positioning suggests that the glass ceramics have potential applications as active laser media or LED sources.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 10","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exact solutions and applications of inhomogeneous vector solitons in optical media 光学介质中非齐次矢量孤子的精确解及其应用

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-16 DOI: 10.1007/s11082-025-08435-2

Emmanuel Yomba

{"title":"Exact solutions and applications of inhomogeneous vector solitons in optical media","authors":"Emmanuel Yomba","doi":"10.1007/s11082-025-08435-2","DOIUrl":"10.1007/s11082-025-08435-2","url":null,"abstract":"<div>Traditional models of soliton dynamics often rely on single-mode approximations; however, practical optical fibers typically exhibit structural inhomogeneities and birefringence, resulting in complex multi-mode interactions. To better capture these dynamics, the scalar nonlinear Schrödinger equation (NLSE) has been extended to vector coupled NLSEs (CNLSEs), which offer a more realistic framework for describing pulse propagation in such environments. In this work, we study the evolution of vector solitons in inhomogeneous two-mode optical fibers governed by a generalized system of coupled NLSEs with ten variable coefficients–significantly generalizing prior models limited to five. Our formulation incorporates key physical effects, including variable group velocity dispersion, self- and cross-phase modulation, linear gain or loss, and external electro-optic phase modulation. Using a similarity transformation method, we reduce the variable-coefficient system to its constant-coefficient counterpart and derive exact analytical solutions. A distinguishing feature of our approach is the classification of self-similar dynamics into two distinct regimes: one with an internal quadratic potential allowing arbitrary scaling functions, and one with a vanishing potential where the pulse shape is determined by compatibility constraints. This classification leads to the construction of nine families of novel chirped similariton solutions, including W-shaped-dipole, bright-dipole, dark-dipoles, and kink-anti-kink-dipole. Numerical simulations confirm that strongly chirped similaritons exhibit greater robustness and structural stability, whereas their weakly chirped counterparts may display breather-like oscillations. These results demonstrate the tunability of soliton characteristics via system parameters and highlight the potential of the model for applications in nonlinear photonics, ultrafast optical signal processing, and Bose–Einstein condensates.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 10","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A waveguide amplitude modulator based on a graphene plasmonic resonance 基于石墨烯等离子体共振的波导调幅器

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08442-3

Jiří Petráček, Jiří Čtyroký, Vladimír Kuzmiak

引用次数: 0

High-performance graphene-integrated terahertz antenna for tumor detection in breast tissue 用于乳腺组织肿瘤检测的高性能石墨烯集成太赫兹天线

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08447-y

Gandreddi Lakshmi Prasanna Ashok, Ganimidi Veerendra Nath, Naveen Kumar Maurya, Bala Chakravarthy Neelapu

{"title":"High-performance graphene-integrated terahertz antenna for tumor detection in breast tissue","authors":"Gandreddi Lakshmi Prasanna Ashok, Ganimidi Veerendra Nath, Naveen Kumar Maurya, Bala Chakravarthy Neelapu","doi":"10.1007/s11082-025-08447-y","DOIUrl":"10.1007/s11082-025-08447-y","url":null,"abstract":"<div>Breast cancer continues to pose a significant health challenge, highlighting the need for advanced diagnostic technologies to improve treatment outcomes. This paper presents a novel approach for tumor detection in human breast tissue using a graphene-integrated terahertz (THz) patch antenna. THz antennas are crucial in medical diagnostics due to their unique properties, and the proposed star-shaped graphene-integrated antenna operates at a resonant frequency of 4.16 THz. The antenna, with dimensions of ( 114 times 100 times 26) (upmu text {m}^3) is designed on a polyimide substrate, characterized by a dielectric constant of 3.5 and a loss tangent of 0.0027. Simulations carried out in Computer Simulation Technology (CST) studio software show that the antenna demonstrates strong performance, with a return loss of (-)51.29 dB, a gain of 5.64 dBi, a bandwidth of 3.7 GHz, and a Voltage Standing Wave Ratio (VSWR) of 1.005. By exploiting the potential of the THz spectrum, the proposed antenna shows promise as a valuable tool for early breast cancer detection.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A multi-cancer metamaterial biosensor: refractive index-based identification of malignant cells 一种多癌超材料生物传感器：基于折射率的恶性细胞识别

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08436-1

Nedjmeddine Mellak, Bouchra Moulfi, Tahar Aliouar

{"title":"A multi-cancer metamaterial biosensor: refractive index-based identification of malignant cells","authors":"Nedjmeddine Mellak, Bouchra Moulfi, Tahar Aliouar","doi":"10.1007/s11082-025-08436-1","DOIUrl":"10.1007/s11082-025-08436-1","url":null,"abstract":"<div>This research introduces a novel biosensor based on terahertz (THz) metamaterials, aimed at highly sensitive, label-free, and non-invasive detection of cancer. Utilizing the distinctive characteristics of THz metamaterials, the biosensor examines the variations in the refractive index of biological samples, offering an accurate instrument for early cancer diagnosis. The biosensor achieves impressive functionality with a sensitivity of 892 GHz/RIU, a quality factor (Q) of 57.7, and a figure of merit of 18.98 RIU−1, and operates at a resonance frequency of 2.688 THz. With a groundbreaking design refined through the full finite element method, the sensor exhibits an absorption rate of 98% and can effectively identify subtle changes in the refractive index linked to several cancer types, such as Jurkat blood, HeLa cervical, PC-12 adrenal gland, MDA-MB-231 and MCF-7 breast cancers, along with basal skin cancer. This biosensor marks a significant leap forward in THz-based medical diagnostics, providing a compact, lab-on-chip compatible unit for swift, dependable, and early cancer detection at the cellular scale.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interaction of nonlinear acoustic waves in dusty plasma with Cairns–Gurevich polarization force 尘埃等离子体中非线性声波与Cairns-Gurevich极化力的相互作用

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08437-0

A. Abdikian, W. Masood

{"title":"Interaction of nonlinear acoustic waves in dusty plasma with Cairns–Gurevich polarization force","authors":"A. Abdikian, W. Masood","doi":"10.1007/s11082-025-08437-0","DOIUrl":"10.1007/s11082-025-08437-0","url":null,"abstract":"<div>This paper investigates the interaction of two dust acoustic solitons in a dusty plasma by considering the influence of the Cairns–Gurevich polarization force. Modified Korteweg–de Vries (mKdV) equations are derived using the modified Poincaré–Lighthill–Kuo method, and the phase shifts in the solitons' trajectories after the interaction are examined. The study reveals that the derived nonlinear equations are influenced by various plasma parameters, including the polarization parameter ((R)), dust-to-ion temperature ratio (({sigma }_{d})), and the number of nonthermal ion parameters ((alpha )). Numerical results demonstrate that only rarefactive electrostatic nonlinear waves can propagate in this system within the range of relevant parameters of the experiment. While the findings align with previous research in terms of phase speed and soliton behavior, this study identifies a new dependency of phase shifts on the amplitudes of the colliding waves, which distinguishes it from earlier works. This study is expected to enhance our understanding of nonlinear localized structures in dusty plasmas with nonthermal trapped ions.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Charge transport generation-recombination mechanism in MoS2 based Schottky diodes 二硫化钼基肖特基二极管的电荷输运-复合机制

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08446-z

Ali Hajjiah, Aliaa Hajiah

{"title":"Charge transport generation-recombination mechanism in MoS2 based Schottky diodes","authors":"Ali Hajjiah, Aliaa Hajiah","doi":"10.1007/s11082-025-08446-z","DOIUrl":"10.1007/s11082-025-08446-z","url":null,"abstract":"<div>The introduction of MoS₂, a two-dimensional transition metal dichalcogenide (TMD), provides unique electronic properties, including a tunable bandgap and high carrier mobility which makes it a promising material for optoelectronic applications. Here, the carrier transport in a Schottky Diode with a sandwiched structure of Pt electrode, n-type MoS₂ and Cr electrode has been investigated. Understanding the charge transport dynamics at Pt/MoS₂ junction of the diode is crucial for optimizing their performance in photodetectors and solar cell applications. The current–voltage (I-V) characteristics of the diode are quantitatively interpreted using the Sah–Noyce–Shockley theory, which describes generation-recombination mechanisms in the space-charge region for a fully depleted layer. The charge transport mechanisms in the Pt/MoS₂/Cr Schottky diode are dominated by recombination processes within the depletion width. The ideality factor remains nearly constant at n = 1.15 across different voltage ranges, challenging conventional thermionic emission models. The Schottky barrier height at the Pt/MoS₂ interface exhibit a built-in voltage dependence. The I–V characteristics are significantly influenced by the optimum bulk properties: mid-gap defect level (Eₜ = 0.75 eV), barrier height (φ₀=0.55 eV), and carrier lifetimes (τₙ = τₚ = 1.5 × 10⁻¹⁰ s). Increased ideality factor (n = 1.2–1.8) reflects an impeded charge transport or increased recombination due to defects and leakage current.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical study of KSnI3-based perovskite solar cell through a comparison of hole transport layers by SCAPS-1D 利用SCAPS-1D对ksni3基钙钛矿太阳能电池空穴传输层的比较进行数值研究

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08431-6

Nahid-Al Mahmud, Farhana Bari Sumona, Muhammad Kashif, Taufiqul Bari Tuhin, Sobhy M. Ibrahim, Md Ferdous Rahman, Abdul Wahed

{"title":"Numerical study of KSnI3-based perovskite solar cell through a comparison of hole transport layers by SCAPS-1D","authors":"Nahid-Al Mahmud, Farhana Bari Sumona, Muhammad Kashif, Taufiqul Bari Tuhin, Sobhy M. Ibrahim, Md Ferdous Rahman, Abdul Wahed","doi":"10.1007/s11082-025-08431-6","DOIUrl":"10.1007/s11082-025-08431-6","url":null,"abstract":"<div>The incorporation of toxic lead obstructs the development and commercialization of perovskite solar cells. A numerical simulation is carried out in the current work to investigate non-toxic KSnI3-based photovoltaic device with STO (Selenium tin oxide) as electron transport layer. A comparison was made between two-hole transport layers (Cu2O and NiO) to determine the highest power conversion efficiency (PCE). At the initial stage the power conversion efficiency for NiO and Cu2O are 15.59%, and 16.52%, respectively. The solar cell capacitance simulator in one dimensional (SCAPS-1D) has been used to design FTO/STO/KSnI3/HTLs/Ag structure. The best results are obtained using Cu2O as HTL, with a 650 nm thickness of absorber, a shallow donor concentration of 1017 cm⁻3, absorber defect density 1012 cm−3, ETL thickness 10 nm, operating temperature of 340 K, and Ni as a back contact. Therefore, the FTO/STO/KSnI3/Cu2O/Ni configuration in the study represents the highest-performance of perovskite solar cell design. The optimized device exhibited PCE = 23.91%, FF = 86.59%, Jsc = 16.945 mA/cm2, and Voc = 1.629 V. The behavior of generation and recombination in the system have been investigated. Additionally, current density–voltage (J–V) characteristics, quantum efficiency (Q-E), and capacitance–voltage (C–V) measurements have been analyzed to investigate the device's electrical properties. This study offers an effective and dependable approach for achieving significant efficiency in perovskite solar cells.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of nonlinear and supernonlinear electric signals in a transmission line 传输线中非线性和超非线性电信号的动力学

IF 4 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-09-15 DOI: 10.1007/s11082-025-08334-6

Dickcha Pradhan, Lamberto Rondoni, Asit Saha

{"title":"Dynamics of nonlinear and supernonlinear electric signals in a transmission line","authors":"Dickcha Pradhan, Lamberto Rondoni, Asit Saha","doi":"10.1007/s11082-025-08334-6","DOIUrl":"10.1007/s11082-025-08334-6","url":null,"abstract":"<div>Dynamics of nonlinear and supernonlinear electric signals are investigated in nonlinear electrical transmission lines (NETL). An evolution equation is derived employing Kirchhoff's current and voltage laws so as to describe the propagation of nonlinear electric signals in the NETL. Using a traveling wave transformation the dynamical system is obtained from the evolution equation for the signals. Phase plane analysis is used in the dynamical system for studying different kinds of nonlinear signals in the NETL. Additionally, periodic signals, solitary signals and superperiodic signals are obtained corresponding to periodic orbits, homoclinic orbits and superperiodic orbits obtained in the phase portraits. Effects of the different physical parameters, such as, speed of traveling signal (v), spacing ((delta _1)) between two adjacent portions in the propagation direction of the electric signal, spacing ((delta _2)) between two adjacent portion in the transverse direction of the propagation of the electric signal, inductance ((L_1)) in series branch and inductance ((L_2)) are presented on periodic, superperiodic and solitary electric signals. Analytical forms of the solitary electric signals of peak and valley types are obtained. Furthermore, linear stability analysis of the signals is conducted in the presence of a small voltage perturbation using linearization technique.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0