Indian Journal of Physics最新文献_第5页

Spatial coherence using a cascaded black and quadratic annulus for the 2nd objective aperture in a confocal scanning laser microscope 在共聚焦扫描激光显微镜中使用级联黑色和二次环的第二物镜孔径的空间相干性

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-07 DOI: 10.1007/s12648-025-03645-6

A. M. Hamed

引用次数: 0

Embedding carbon nanofibers on nickel oxide for supercapacitor applications 纳米碳纤维在氧化镍上的嵌入及其在超级电容器中的应用

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-07 DOI: 10.1007/s12648-025-03662-5

D. Baba Basha, Ahsan Ahmed

{"title":"Embedding carbon nanofibers on nickel oxide for supercapacitor applications","authors":"D. Baba Basha, Ahsan Ahmed","doi":"10.1007/s12648-025-03662-5","DOIUrl":"10.1007/s12648-025-03662-5","url":null,"abstract":"<div><p>Supercapacitor electrode intrinsic electrochemical performance is mainly dependent on their structures. Thus, a lot of attention has been garnered on the logical synthesis of supercapacitor electrodes with appropriate structures. The transition metal oxide and porous carbon composite have shown outstanding porosity and electrical conductivity. This makes them a promising candidate as a supercapacitor electrode. Nevertheless, their complex synthesis and unpredictable instability remain a significant obstacle. The porous network of the Carbon Nanofiber (CNF) and Nickel Oxide (NiO) may offer plenty of pathways for the transfer of ions and encourage a sufficient interaction between the active ingredient and the electrolyte. Moreover, their composite network may account for stable and excellent pseudocapacitance. In this study, we propose a simple process employing an ultrasonication technique for embedding different weight percent of CNF on NiO to synthesize CNF/NiO nanocomposite. When evaluated as an electrode for asymmetric supercapacitor configuration, the nanocomposite with 2 weight percent of CNF (CNF-2) offered better performance in terms of low response time (~ 12 s) and low bulk resistance (~ 0.76 Ω). In comparison to other nanocomposite, the optimized one revealed excellent rate capability (capacitance retention of ~ 74% even after scan rates of 100 mV s<sup>−1</sup>). CNF-2 exhibited a high specific capacitance of 173.4 F g<sup>−1</sup> at a current load of 1 A g<sup>−1</sup>; and long cycling stability (95.2% capacitance retention even after 5000 cycles). Moreover, the optimized composite revealed a maximum specific energy of 6.1 Wh kg<sup>−1</sup> at a respective specific power of 1.4 kW kg<sup>−1</sup>. The method highlighted in this investigation benefits from ease of use, environmental friendliness, and potential for large-scale production. It also offers prospects for the design and development of electrode materials of the future for energy storage and conversion devices.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4053 - 4065"},"PeriodicalIF":1.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of calcination temperature of CeO2/ZnFe2O4/CuFe2O4 nanocomposites: structural, surface area and paramagnetic properties 煅烧温度对CeO2/ZnFe2O4/CuFe2O4纳米复合材料结构、表面积和顺磁性的影响

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-07 DOI: 10.1007/s12648-025-03618-9

Gulime Ravi, K. Thyagarajan

{"title":"Effect of calcination temperature of CeO2/ZnFe2O4/CuFe2O4 nanocomposites: structural, surface area and paramagnetic properties","authors":"Gulime Ravi, K. Thyagarajan","doi":"10.1007/s12648-025-03618-9","DOIUrl":"10.1007/s12648-025-03618-9","url":null,"abstract":"<div><p>This research examined how varying calcination temperatures affected the fundamental characteristics of ZnFe<sub>2</sub>O<sub>4</sub>/CuFe<sub>2</sub>O<sub>4</sub>/CeO<sub>2</sub> nanocomposites. These materials were created using an autocombustion technique and then subjected to calcination at 600, 700, and 800 °C, with the resulting samples labeled CeZnCu 1, CeZnCu 2, and CeZnCu 3. X-ray diffraction (XRD) measurements demonstrated that the purity of the crystalline phases and the average crystallite dimensions were significantly altered by the temperature of calcination. The material's morphology, specifically particle size and shape alterations resulting from heat treatment, was visualized using field emission scanning electron microscopy (FESEM). Chemical bonding was confirmed through Fourier transform infrared (FTIR) spectroscopy, and the elemental surface composition was quantified using X-ray photoelectron spectroscopy (XPS). Surface area and pore characteristics were determined via Brunauer–Emmett–Teller (BET) analysis, which demonstrated a significant textural modification due to the thermal processing. The study's findings emphasize the crucial role of calcination temperature in controlling the physical and chemical properties of these nanocomposites. This work offers valuable information for optimizing the synthesis process, allowing for the precise adjustment of material properties for diverse applications and the advancement of material design.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 10","pages":"3767 - 3775"},"PeriodicalIF":1.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Theoretical investigation of Higgs mechanism in mutational behavior field of monkeypox virus 猴痘病毒突变行为领域希格斯机制的理论研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-06 DOI: 10.1007/s12648-025-03555-7

Richard Pinčák, Kabin Kanjamapornkul, Alexander Pigazzini, Saeid Jafari

{"title":"Theoretical investigation of Higgs mechanism in mutational behavior field of monkeypox virus","authors":"Richard Pinčák, Kabin Kanjamapornkul, Alexander Pigazzini, Saeid Jafari","doi":"10.1007/s12648-025-03555-7","DOIUrl":"10.1007/s12648-025-03555-7","url":null,"abstract":"<div><p>We modified and applied the definition and meaning of the mathematical structure of the covariant derivative of gauge field in particle physics to redefine the situation where we need to utilize for the deep understanding of the theoretical investigation of the source of mutation field in the genome of monkeypox during the viral replication process. This topic allows us to identify the relationship between the adaptive behavior and intrinsic self-dual and anti-self-dual consistency field in parasitism co-state, where the mutational induced an effect of the loop replication process with parallel transport of newly defined quantum genotype in the co-living quantum biological state. We used this approach, we applied to the comparative study of quantum genotype measurement of the whole genome of selected 27 samples of monkeypox viruses including 10 new variants. The result of the image of the spectrum of tensor correlation analysis suggests that IIb. B. 1.5 variant of the monkeypox virus is similar to the smallpox.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 9","pages":"3173 - 3196"},"PeriodicalIF":1.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12648-025-03555-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of europium concentration on the XEOL spectra of Eu-doped CaWO4 obtained via sonification 铕浓度对铕掺杂CaWO4超声光谱的影响

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-06 DOI: 10.1007/s12648-025-03654-5

E. A. Mukhanova, P. D. Kuznetsova, I. A. Pankin, A. A. Tereshchenko, A. V. Soldatov

{"title":"Influence of europium concentration on the XEOL spectra of Eu-doped CaWO4 obtained via sonification","authors":"E. A. Mukhanova, P. D. Kuznetsova, I. A. Pankin, A. A. Tereshchenko, A. V. Soldatov","doi":"10.1007/s12648-025-03654-5","DOIUrl":"10.1007/s12648-025-03654-5","url":null,"abstract":"<div><p>X-ray photodynamic therapy (X-PDT) is a versatile treatment modality that combines the power of X-ray radiation with photosensitizers to induce localized cell death in cancerous tissues. In recent years, scheelite has emerged as a promising candidate for use in X-PDT because of its unique photoluminescent properties and biocompatibility. In this study, we investigated the influence of the concentration of europium on the XEOL spectra of Eu-doped CaWO<sub>4</sub> samples synthesized via sonification. The results show that the XEOL spectra of the synthesized samples exhibit distinct and characteristic emission bands closely associated with Eu<sup>3+</sup> ions, suggesting the potential presence of Eu<sup>2+</sup>. These findings are important because they point toward the occurrence of <sup>4</sup>F<sub>6</sub> transitions at specific wavelengths within the material. Furthermore, we observed that the intensity of these emission bands was not constant but varied significantly with the concentration of europium cations within the samples.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 12","pages":"4779 - 4784"},"PeriodicalIF":1.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Real-time stabilization the bias point of electro-optic amplitude modulator at the single-photon level 单光子水平电光调幅器偏置点的实时稳定

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-06 DOI: 10.1007/s12648-025-03617-w

B. Yu, Z.-Q. Yin, W.-J. Ding

引用次数: 0

Numerical investigation of high birefringence dynamics in simple hexagonal photonic crystal fiber 简单六方光子晶体光纤高双折射动力学的数值研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03648-3

R R Mahmud, M EN Khan, A A M Nafiz, M ES Khan, B Dey, M A Hossain

{"title":"Numerical investigation of high birefringence dynamics in simple hexagonal photonic crystal fiber","authors":"R R Mahmud, M EN Khan, A A M Nafiz, M ES Khan, B Dey, M A Hossain","doi":"10.1007/s12648-025-03648-3","DOIUrl":"10.1007/s12648-025-03648-3","url":null,"abstract":"<div><p>This research article introduces a modified structure of a Hexagonal cladding photonic crystal fiber (HC-PCF) which simultaneously achieved a large birefringence and low negative flattened dispersion which is highly compatible for medical imaging, sensing and distortion less data transmission. The optical characteristics of the HC-PCF are analyzed by using the finite element method (FEM) embodied with an entirely resembled circular boundary. For the optimum geometrical parameters, the HC-PCF shows average large birefringence of 0.041 across average negative dispersion − 275 ps nm<sup>−1</sup> km<sup>−1</sup> and − 75 ps nm<sup>−1</sup> km<sup>−1</sup> for X and Y polarization where the conducting bandwidth was 1800 nm (1.2–3.0 μm). Altering the pitch and radius of the circle yields an equivalent optimum result, assuming a fabrication tolerance of approximately ± 2%. The proposed HC-PCF can be utilized in applications such as polarized data transmission, medical applications, various sensing utilities and so on. The proposed HC-PCF structure stands out due to its design simplicity, enhanced birefringence, low flattened dispersion, and very low confinement loss—making it highly suitable for applications such as polarization-maintaining data transmission, medical imaging, and sensing in a wide spectral range. In conclusion, the structure provides an efficient and fabrication-tolerant solution for broadband birefringent applications, offering a strong balance between optical performance and practical feasibility.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 12","pages":"4485 - 4496"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Finsler geometry insights into wormhole traversability and physical properties 芬斯勒几何学对虫洞可穿越性和物理特性的洞察

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03638-5

M. Manjunath, S. K. Narasimhamurthy, Z. Nekouee, B. R. Yashwanth, Y. K. Mallikarjun

{"title":"Finsler geometry insights into wormhole traversability and physical properties","authors":"M. Manjunath, S. K. Narasimhamurthy, Z. Nekouee, B. R. Yashwanth, Y. K. Mallikarjun","doi":"10.1007/s12648-025-03638-5","DOIUrl":"10.1007/s12648-025-03638-5","url":null,"abstract":"<div><p>The present study provides a comprehensive investigation of traversable wormhole solutions within the framework of Finsler geometry, offering a novel extension beyond conventional Riemannian approaches. By formulating and analyzing a modified gravitational field equation, we establish the fundamental conditions necessary for the stability and traversability of the wormhole. By incorporating a linear equation of state, <span>(p_r = gamma rho)</span>, alongside a meticulously chosen shape function, we ensure adherence to essential geometric constraints. Through rigorous examination of proper radial distance, active mass, and total gravitational energy, we demonstrate that the Finslerian parameter <span>(lambda)</span> plays a critical role in shaping the wormhole’s physical properties. Notably, our findings reveal that Finslerian effects significantly modify the energy conditions, offering a more viable framework for wormhole existence. Furthermore, we establish that for specific values of <span>(lambda)</span>, the total gravitational energy remains favorable for traversability, while excessive accumulation may trigger black hole formation. In addition to advancing the understanding of Finslerian wormholes in modified gravity theories, this study also underscores their astrophysical significance, paving the way for future explorations in higher-dimensional and anisotropic space-time models.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4459 - 4473"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A fractional geoKdV model in higher dimensional oceanic flows and its applications in geophysics 高维海洋流的分数阶geoKdV模型及其在地球物理中的应用

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03554-8

Md. Sabur Uddin, Alrazi Abdeljabbar, Harun-Or-Roshid, Mst. Shekha Khatun, Md. Mamunur Roshid

{"title":"A fractional geoKdV model in higher dimensional oceanic flows and its applications in geophysics","authors":"Md. Sabur Uddin, Alrazi Abdeljabbar,  Harun-Or-Roshid, Mst. Shekha Khatun, Md. Mamunur Roshid","doi":"10.1007/s12648-025-03554-8","DOIUrl":"10.1007/s12648-025-03554-8","url":null,"abstract":"<div><p>In this manuscript, our goal is to investigate effects of Coriolis constant attribute on obtained solutions for the geoKdV equation. Two effective techniques will be employed to unveil diverse manifestations of soliton behaviors produced by the simple equation method and the modified generalized exponential rational function technique (mGERFT). Our suggested procedures are implemented for obtaining various types of exact solutions of geoKdV equation. These methods allow us to obtain solutions formulated in terms of special functions, which are very useful in many different branches of mathematical physics. Furthermore, our research will be presented novel and distinctive arrangements of soliton behaviors derived from this model, offering perspectives on real-world uses in the field of geophysics. As a result, we deliver accurate wave solutions for bright and dark bell-shaped waves, multiple single solitons, exponential solutions and periodic waves profile. Using the computational program Maple, we have produced multiple 2D plots and 3D plots with contour lines of our obtained solutions. These structures can also characterize various explanations for other models in the purviews of nonlinear science and engineering.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 10","pages":"3849 - 3863"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Improved photovoltaic performance of MAPbI3 based solar cells via SCAPs 通过SCAPs提高MAPbI3基太阳能电池的光伏性能

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03649-2

Saood Ali, Mohd Quasim Khan, Rais Ahmad Khan, Haitham S. Alhumud

{"title":"Improved photovoltaic performance of MAPbI3 based solar cells via SCAPs","authors":"Saood Ali, Mohd Quasim Khan, Rais Ahmad Khan, Haitham S. Alhumud","doi":"10.1007/s12648-025-03649-2","DOIUrl":"10.1007/s12648-025-03649-2","url":null,"abstract":"<div><p>In the recent years, perovskite solar cells (PvskSCs) have emerged as the promising solar cell technology due to its cost-effectiveness and high photovoltaic performance. Although, various experimental reports demonstrated excellent performance but more development and studies are required before their large scale applications. Thus, it would be of great importance to employ the theoretical investigations which may benefit the researchers to develop the high performance PvskSCs. Recently, simulation studies via solar cell capacitance tool (SCAPs) has received extensive interest of the researchers. It is believed that SCAPs based findings may be useful for experimental studies. Herein, we reported the simulation of MAPbI<sub>3</sub> absorber material based PvskSCs using SCAPs as simulation tool. Titanium carbide (Ti<sub>3</sub>C<sub>2</sub>) MXene was utilized as additive to improve the performance of the PvskSCs. The effect of thickness of the absorber layer was optimized. Additionally, thickness of titanium dioxide (TiO<sub>2</sub>) and 2,2′,7,7′-tetrakis (<i>N</i>,<i>N</i>-di-<i>p</i>-methoxyphenylamine)-9,9′-spirobifluorene (spiro-MeOTAD were also optimized. In addition, three electron transport layers (ETL) were also applied for further studies. The effect of temperature of was also investigated and optimized device exhibited efficiency of 23.32%.</p></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 12","pages":"4667 - 4675"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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