Results in Physics最新文献_第7页

Material analysis and broadband photoresponse characteristics of ZnO/N,N’-Dioctyl-3,4,9,10-perylenedicarboximide (PDI-C8) composite materials with organic nanostructures deposited on ZnO nanorods

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-03-01 DOI: 10.1016/j.rinp.2025.108180

Yi-Yu Tsai , Ming-Hsien Li , Ming-Yu Kuo

{"title":"Material analysis and broadband photoresponse characteristics of ZnO/N,N’-Dioctyl-3,4,9,10-perylenedicarboximide (PDI-C8) composite materials with organic nanostructures deposited on ZnO nanorods","authors":"Yi-Yu Tsai , Ming-Hsien Li , Ming-Yu Kuo","doi":"10.1016/j.rinp.2025.108180","DOIUrl":"10.1016/j.rinp.2025.108180","url":null,"abstract":"<div><div>This study investigates the composite material of ZnO nanorods (NRs) and the organic compound <em>N,N’</em>-Dioctyl-3,4,9,10-perylenedicarboximide (PDI-C8) to expand the light-sensing range of ZnO-based photodetectors. By incorporating PDI-C8, a heterostructure is formed, enhancing visible light absorption and resulting in improved visible light sensing performance. Multiple material analyses also reveal that the organic PDI-C8 is stacked nearly vertically on the ZnO NRs, forming an organic layer with internal voids. As the amount of organic material increases, bubble-like microstructures may form on the surface. Furthermore, an appropriate heterojunction between ZnO and PDI-C8 facilitates broadband light sensing. Experimental results show that pure ZnO-NRs devices exhibit UV photosensing only, whereas ZnO-NRs devices with 1 drop of PDI-C8 exhibit strong blue and green light responses, and those with 3 drops of PDI-C8 demonstrate an improved red light response. These findings suggest that the sensing spectrum can be tuned by controlling the amount of PDI-C8 on ZnO NRs. This study successfully develops a wide-band photodetector based on organic–inorganic composite materials, capable of extending the light sensing range to visible and infrared light.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108180"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Numerical investigation of a high-performance MXene and graphene-based metamaterial absorber for terahertz biosensing

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-03-01 DOI: 10.1016/j.rinp.2025.108185

Patri Upender , Amarjit Kumar

{"title":"Numerical investigation of a high-performance MXene and graphene-based metamaterial absorber for terahertz biosensing","authors":"Patri Upender , Amarjit Kumar","doi":"10.1016/j.rinp.2025.108185","DOIUrl":"10.1016/j.rinp.2025.108185","url":null,"abstract":"<div><div>This work presents a high-performance MXene- and graphene-centered metamaterial absorber for terahertz (THz) biosensing applications. The proposed absorber exhibits an ultra-narrowband response at 0.668 THz with an exceptionally high-quality factor (Q) of 102.9, sensitivity (S) of 0.4 THz/RIU, and figure of merit (FOM) of 40 RIU<sup>−1</sup>, outperforming existing THz sensors. The strong field confinement achieved through localized surface plasmon resonance (LSPR) in MXene and tunable graphene layers enhances detection accuracy. The absorber maintains polarization insensitivity (PI) and wide incidence angle stability, ensuring robust operation under real-world conditions. By leveraging the unique properties of MXene for high conductivity and graphene for dynamic tunability, the sensor achieves superior performance in the 0.1–1 THz molecular fingerprinting regime, enabling efficient detection of malaria, dengue, and various cancers. The compact, planar design simplifies fabrication while offering reconfigurable spectral characteristics, making it a promising platform for next-generation THz biosensing and precision diagnostics.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108185"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Thermal convection of hydromagnetic tangent hyperbolic fluid in spinning porous media cone of non-isothermal power-law model with radiation and heat gain

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-26 DOI: 10.1016/j.rinp.2025.108157

R.A. Kareem , S.O. Salawu , E.O. Fatunmbi , A.M. Obalalu , T.A. Yusuf

{"title":"Thermal convection of hydromagnetic tangent hyperbolic fluid in spinning porous media cone of non-isothermal power-law model with radiation and heat gain","authors":"R.A. Kareem , S.O. Salawu , E.O. Fatunmbi , A.M. Obalalu , T.A. Yusuf","doi":"10.1016/j.rinp.2025.108157","DOIUrl":"10.1016/j.rinp.2025.108157","url":null,"abstract":"<div><div>The interest in enhancing industrial output and improving its efficiency has stimulated investigation into various fluid flow characteristics under diverse conditions and geometries. The performance of industrial products depends largely on the quality of the base materials. As such, this study examines the thermal convection of hydromagnetic flow of a tangent hyperbolic fluid within a spinning porous media cone, subjected to a non-isothermal power-law temperature distribution. The viscoelastic property and the nonlinear behavior of the fluid flow embodied the Cauchy stress tensor of the tangent hyperbolic model. The flow is influenced by gravity, porous saturated spinning cone medium, and transverse magnetic field, which stimulates internal heating. Without fluid material deformation, a mathematical differential model is developed to describe the momentum and energy flow dimensions. A comprehensive analysis of the transformed theoretical model is conducted using the Galerkin-weighted residual method in the presence of radiative heat transfer and heat gain. It was revealed from the study that, a rise in the magnetic field intensity inspires Joule heating, increasing the fluid heat distribution and influencing the boundary layer viscosity. Also, radiative heat transfer moderating prompts temperature profile due to convective heat gain. Hence, this study contributes to enhancing the understanding and control of thermal management in industrial applications, such as in cooling technologies for energy systems and rotating machinery.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108157"},"PeriodicalIF":4.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Sensitivity analysis for the anomalous tqγ couplings via γq→tγ subprocess in photon–proton collisions at the FCC-μp FCC-μp光子-质子碰撞中通过γq→tγ子过程的反常tqγ耦合的灵敏度分析

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-22 DOI: 10.1016/j.rinp.2025.108167

Eda Alici

{"title":"Sensitivity analysis for the anomalous tqγ couplings via γq→tγ subprocess in photon–proton collisions at the FCC-μp","authors":"Eda Alici","doi":"10.1016/j.rinp.2025.108167","DOIUrl":"10.1016/j.rinp.2025.108167","url":null,"abstract":"<div><div>In this study, we investigate anomalous Flavor-Changing Neutral Current (FCNC) interactions related to the top quark, particularly the <span><math><mrow><mi>t</mi><mo>→</mo><mi>q</mi><mi>γ</mi></mrow></math></span> transition, within the Standard Model Effective Field Theory (SMEFT) framework. These rare processes are largely suppressed in the Standard Model (SM) and are strong indicators of new physics scenarios beyond the SM. In our study, we have analyzed the cross sections of the <span><math><mrow><mi>γ</mi><mi>q</mi><mo>→</mo><mi>t</mi><mi>γ</mi></mrow></math></span> subprocess for two different center-of-mass energies, 17.3 TeV and 24.5 TeV, at the Future Circular Collider (FCC-<span><math><mi>μ</mi></math></span>p). Our results derived from simulations show that the branching ratios for these processes can be reduced to the order of <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup></mrow></math></span>. In other words, the obtained values enhance sensitivity by approximately 30% and these represent a sensitivity improvement over the current experimental limits from CMS. Moreover, it has been demonstrated that higher center-of-mass energies and integrated luminosity values significantly enhance the discovery potential of these rare processes. Accordingly, the results indicate high-energy colliders such as FCC-<span><math><mi>μ</mi></math></span>p are of critical importance in the search for new physics and in the study of the role of the top quark in the context of flavor physics. As a result, by providing a comprehensive theoretical analysis, this study contributes to the importance of FCNC processes in the search for new physics beyond the Standard Model and will shed light on future experimental and phenomenological studies.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108167"},"PeriodicalIF":4.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pressure-induced decomposition of Bi14WO24

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-21 DOI: 10.1016/j.rinp.2025.108170

E. Karaca , D. Santamaria-Perez , A. Otero-de-la-Roza , R. Oliva , K.S. Rao , S.N. Achary , C. Popescu , D. Errandonea

{"title":"Pressure-induced decomposition of Bi14WO24","authors":"E. Karaca , D. Santamaria-Perez , A. Otero-de-la-Roza , R. Oliva , K.S. Rao , S.N. Achary , C. Popescu , D. Errandonea","doi":"10.1016/j.rinp.2025.108170","DOIUrl":"10.1016/j.rinp.2025.108170","url":null,"abstract":"<div><div>We present a study of the high-pressure behaviour Bi<sub>14</sub>WO<sub>24</sub>, a high oxide ion conductor member of the Bi<sub>2</sub>O<sub>3</sub>-WO<sub>3</sub> binary system. The tetragonal polymorph of Bi<sub>14</sub>WO<sub>24</sub> was studied under high-pressure conditions using synchrotron powder X-ray diffraction. It was found that in contrast to isostructural Bi<sub>14</sub>CrO<sub>24</sub> and Bi<sub>14</sub>MoO<sub>24</sub> which experience a phase transition around 5 GPa, in our study Bi<sub>14</sub>WO<sub>24</sub> apparently undergoes an irreversible chemical decomposition into Bi<sub>2</sub>O<sub>3</sub> and WO<sub>3</sub> at 2.85(5) GPa. The pressure dependence of the unit-cell parameters of Bi<sub>14</sub>WO<sub>24</sub> was also determined, and hence the linear compressibility along different axes and room-temperature pressure–volume equation of state were derived. Bulk modulus of tetragonal Bi<sub>14</sub>WO<sub>24</sub> was found to be 49.8(2.6) GPa, and the linear compressibility of the two crystallographic axes, κ<sub>a</sub> and κ<sub>c</sub> were 6.94(2) 10<sup>−3</sup> GPa<sup>−1</sup> and = 3.73(1) 10<sup>−3</sup> GPa<sup>−1</sup>, respectively. The pressure induced decomposition can be attributed to the favourable increasing density of the system to accommodate the pressure induced stress.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108170"},"PeriodicalIF":4.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Discrete Legendre polynomials method to solve the coupled nonlinear Caputo–Hadamard fractional Ginzburg–Landau equations

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-21 DOI: 10.1016/j.rinp.2025.108147

M.H. Heydari , D. Baleanu , M. Bayram

引用次数: 0

Stopping power of surface magnetoplasmons with viscous and quantum effects in different two-dimensional targets

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-20 DOI: 10.1016/j.rinp.2025.108156

Ya Zhang , Wei Jiang

引用次数: 0

DFT + U + V approach to Fe3O4 (001): Insights into surface chemistry and Cu2+ adsorption

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-20 DOI: 10.1016/j.rinp.2025.108158

Nelson Naveas , Francisco Javier Fernández-Alonso , Ruth Pulido , Raúl J. Martin-Palma , Jacobo Hernández-Montelongo , Célia T. Sousa , Miguel Manso-Silván

{"title":"DFT + U + V approach to Fe3O4 (001): Insights into surface chemistry and Cu2+ adsorption","authors":"Nelson Naveas , Francisco Javier Fernández-Alonso , Ruth Pulido , Raúl J. Martin-Palma , Jacobo Hernández-Montelongo , Célia T. Sousa , Miguel Manso-Silván","doi":"10.1016/j.rinp.2025.108158","DOIUrl":"10.1016/j.rinp.2025.108158","url":null,"abstract":"<div><div>In this report, a first-principles investigation of the Fe<sub>3</sub>O<sub>4</sub> (001) surface using Density Functional Theory (DFT) with Hubbard U and inter-site V corrections (DFT + U + V) is presented. By considering the DFT and DFT + U approaches, a semi-metallic nature is observed, while by applying the DFT + U + V method, a pronounced gap is created at the Fermi level, in agreement with the insulating nature of the surface. Furthermore, Cu<sup>2+</sup> adsorption simulations were performed, revealing that the incorporation of both U and V parameters is crucial for accurately modeling the adsorption processes, which are essential for catalysis and environmental applications. These findings highlight the importance of considering both on-site and inter-site electron interactions to achieve a comprehensive understanding of the surface chemistry of transition metal oxides, with an impact on applications of the Fe<sub>3</sub>O<sub>4</sub> (001) surface chemistry.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108158"},"PeriodicalIF":4.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhancing methylene blue degradation via Mn, Co, and Al doped organic-ligand-stabilized ZnO nanoparticles: Experimental and DFT insights

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-19 DOI: 10.1016/j.rinp.2025.108166

Imran Ullah , Reinhard B Neder , Muhammad Irfan khan , Suriati Sufian , Huma Parwaz

{"title":"Enhancing methylene blue degradation via Mn, Co, and Al doped organic-ligand-stabilized ZnO nanoparticles: Experimental and DFT insights","authors":"Imran Ullah , Reinhard B Neder , Muhammad Irfan khan , Suriati Sufian , Huma Parwaz","doi":"10.1016/j.rinp.2025.108166","DOIUrl":"10.1016/j.rinp.2025.108166","url":null,"abstract":"<div><div>Organic dyes contaminate a huge amount of water annually, resulting in potential risks for aquatic ecosystems. The removal of such contamination is addressed in this study by synthesizing highly stabilized manganese (Mn), cobalt (Co), and aluminum (Al)-doped zinc oxide (ZnO) ultra-small (US) nanoparticles (NPs) via the sol–gel approach and characterized through various characterization techniques. XRD confirmed single-phase crystallization in all samples, with crystallite/nanoparticle sizes ranging from 3 nm to 10 nm. A broad absorbance peak in the UV–Vis spectra signified size distribution, with the bandgap ranging from 3.02 to 3.06 eV for ZnO and reduced to 2.98 eV upon Co-doping. Density Functional Theory (DFT) calculations revealed improved structural and mechanical stability upon Co-doping and citrate (cit) capping. Furthermore, Co-doping and cit-capping improved the chemical reactivity of ZnO NPs. The cit-decorated 3 % Mn-doped ZnO photocatalyst improved the degradation efficiency from 27.02 mg/g to 29.63 mg/g. The 5 % Co-doped ZnO photocatalyst (cit-capped) exhibited 8.50 % higher dye degradation compared toZnO-cit. Among dmlt-capped photocatalysts (ZnO), 5 % Al-doped remain an excellent photocatalyst and degrade 95.49 % dye in 180 min. DFT study revealed that cit-capping and Co-doping improve the light absorption of the photocatalysts, with an onset shift from 0.75 eV (ZnO) to 0.10 eV (ZnO cit). Co-incorporation into the ZnO lattice introduces an additional absorption peak in the visible range. Moreover, cit-capping also broadens the absorption range. Degradation kinetics of MB dye follow pseudo-first-order kinetics with R-squared values ranging from 0.90 to 0.99. Further improvements are possible through optimization of dopant levels (%), dye concentration, pH, and temperature.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"70 ","pages":"Article 108166"},"PeriodicalIF":4.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Modulated magnetic and piezoresponse phase by applied electric field in 2D layered materials at room temperature

IF 4.4 2区物理与天体物理

Results in Physics Pub Date : 2025-02-18 DOI: 10.1016/j.rinp.2025.108162

Joong Yeon Lim , Seonghwan Kim , Young-Seong Kim

引用次数: 0