Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08954-5
Yasmin J, Gracie. P. J, Geetha D.
{"title":"Electrospinning-derived La2M′MnO6 (M′=Ni, Co, Fe) fibers for efficient photocatalytic and antibacterial applications","authors":"Yasmin J, Gracie. P. J, Geetha D.","doi":"10.1007/s00339-025-08954-5","DOIUrl":"10.1007/s00339-025-08954-5","url":null,"abstract":"<div><p>The distinctive attributes of double perovskite oxides (DPOs) have drawn interest to meet the demands in a wide range of environmental and energy-related fields. This study reports the fabrication of La<sub>2</sub>M′MnO<sub>6</sub> (M′=Ni, Co, Fe) double perovskite nanofibers via a polyvinylpyrrolidone (PVP)-assisted electrospinning method followed by calcination at 700 °C. SEM analysis confirmed the polymer burnout and the formation of interconnected fibrous networks. Raman spectroscopy and UV-Vis absorption analysis revealed vibrational features and narrow band gaps between 2.20 and 2.57 eV, favouring visible-light-driven photocatalysis. Photocatalytic studies showed that La<sub>2</sub>NiMnO<sub>6</sub> (LNMO) fibers achieved 91% degradation efficiency for methyl orange (MO) and 94% degradation efficiency for crystal violet (CV) dyes under visible light in 180 min. Kinetic analysis confirmed pseudo-first-order reaction rates. Reusability tests over five consecutive cycles showed less than 20% reduction in efficiency, confirming the material’s long-term stability. Scavenger studies identified holes (h⁺) and superoxide radicals (O<sub>2</sub>⁻•) as the primary active species. Antibacterial testing demonstrated a zone of inhibition up to 11 mm for E. coli and 10 mm for S. aureus, with enhanced activity attributed to higher membrane permeability and reactive oxygen species (ROS) sensitivity in Gram-negative bacteria. These results position La<sub>2</sub>M′MnO<sub>6</sub> fibers as robust, reusable materials for integrated water purification and antibacterial treatment.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08985-y
Swathi V. M., Aji A. Anappara
{"title":"Ultraviolet emission from 2D tellurium nanosheets synthesised using diverse exfoliation techniques","authors":"Swathi V. M., Aji A. Anappara","doi":"10.1007/s00339-025-08985-y","DOIUrl":"10.1007/s00339-025-08985-y","url":null,"abstract":"<div>\u0000 \u0000 <p>We report the reproducible synthesis of ultraviolet (UV) photoluminescence (PL) emission from tellurium nanosheets (TeNS) through three distinct top-down exfoliation methods, probe sonication, cryo-assisted synthesis and shear-induced fracturing. Despite differing synthesis processes, all approaches yield few-layer thick (0.6–6.4 nm) TeNS with consistent structural integrity and prominent UV emission centred at 340 nm (3.65 eV). Systematic optical characterisation reveals transitions from p-bonding triplets to p-antibonding triplets, manifested as two characteristic absorption peaks around ~ 230–240 nm (5.16–5.39 eV) and ~ 270–280 nm (4.43–4.60 eV). XRD and Raman studies confirm the crystalline features of TeNS, while FTIR spectra indicate surface/ edge hydroxylation, which enhances their dispersion stability in an aqueous medium. The method-independent reproducibility of UV emission can be attributed to the surface states influenced by hydroxyl functionalisation rather than arising from the intrinsic bandgap of TeNS. These findings suggest solution-processed TeNS as UV emitters with potential for optoelectronic applications.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08990-1
Nastaran Bakhtiari, Lukas Janos Richter, Jürgen Ihlemann
{"title":"Laser patterning of glass films for the fabrication of binary silicate glass optics","authors":"Nastaran Bakhtiari, Lukas Janos Richter, Jürgen Ihlemann","doi":"10.1007/s00339-025-08990-1","DOIUrl":"10.1007/s00339-025-08990-1","url":null,"abstract":"<div><p>The fabrication of binary phase masks by excimer laser ablation of thin borosilicate glass films deposited on fused silica substrates is reported. The 1.1 μm thick films, prepared via magnetron sputtering, exhibit high optical quality and sufficient UV absorption to enable precise structuring at 193 nm wavelength. Rear-side irradiation allows for full film removal with minimal substrate damage and near-zero debris formation, yielding clean line profiles with high edge quality. In contrast to previously used silicon suboxide layers, the borosilicate films provide high UV transmission and can be further improved by moderate thermal annealing at 500 °C. The resulting phase masks demonstrate a phase shift of ~ 3π at 405 nm, generating efficient diffraction into the ± 1st orders with measured intensities approaching theoretical expectations. The parallel nature of the mask-based ablation scheme enables scalable, high-throughput fabrication, making this approach highly attractive for applications in laser micro machining, diffractive optics, and structured illumination systems.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of poly acrylic-acid aqueous binder on performance of nano si with black carbon paste as anodes in li-ion batteries","authors":"Isma Bozetine, Abdelhak Cheriet, Chafiaa Yaddaden, Fahim Hamidouche, Fatima Boudeffar, Lamia Talbi, Aissa Keffous, Samira Kaci, Ali Mameri, Amar Manseri, Jean-Claude Lepretre, Zineb Meguellati","doi":"10.1007/s00339-025-08919-8","DOIUrl":"10.1007/s00339-025-08919-8","url":null,"abstract":"<div><p>In the present work, a copper substrate was successfully coated with a conductive paste made of silicon nanoparticles as the active ingredient, carbon black, and a poly (acrylic acid) (PAA) binder. Electrochemical impedance spectroscopy (EIS), galvanostatic charge/discharge (GCD), and cyclic voltammetry (CV) were then performed to assess the electrochemical performance of the manufactured electrode. The structural and surface characterizations were performed before and after cycling using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray spectroscopy (EDX). X-ray diffraction (XRD) analysis was also carried out to confirm the crystalline nature of the Silicon phase in the electrode before cycling. With a high initial discharge capacity of 3868 mAh g⁻¹ and an initial Coulombic Efficiency (ICE) of 98%, the Si–PAA electrode came close to silicon’s theoretical capacity of 4200 mAh g⁻¹. Our electrode performed competitively when compared to other Silicon-based electrodes that have been reported in the Literature. Furthermore, the electrode demonstrated stable behavior under a range of rates and maintained an 81% capacity retention after 100 cycles at a current density of 32 mA g⁻¹, demonstrating good rate capability. The electrode’s strong adherence to the current collector and its capacity to maintain integrity throughout cycling demonstrate the improvement in mechanical stability, however additional quantitative mechanical tests (such as adhesion or flexibility) are still being conducted.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08941-w
Mehrdad Ekhtiari, Masoud Ajri, Ali Ebrahimi
{"title":"Mechanical behavior of single- and double-layer biphenylene spirals","authors":"Mehrdad Ekhtiari, Masoud Ajri, Ali Ebrahimi","doi":"10.1007/s00339-025-08941-w","DOIUrl":"10.1007/s00339-025-08941-w","url":null,"abstract":"<div><p>This paper is a pioneering computational study of the nanomechanical properties of biphenyl helices. The mechanical properties of this structure in intact and perforated form and single and double layers, including stress-strain and force-strain diagrams under tensile simulations, were investigated by molecular dynamics simulation. The experimental intermolecular reactive adaptive bond order potential was used to model the covalent bonds and van der Waals interactions between carbon atoms of this structure. Also, the paper’s last part investigates the helices’ mechanical behavior. The results obtained from these simulations indicate three major deformation phases, including elastic due to van der Waals interactions between spiral layers, elastic due to covalent bonds of carbon atoms, and inelastic regimes. In this study, an attempt was made to determine the changes in geometric parameters, including the cross-sectional area of the spiral structure, the effect of pinhole size on these properties, and the effect of the number of layers on the mechanical properties of biphenylene spirals.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08998-7
Ivan Bolesta, Oleksii Kushnir, Halyna Klym, Ivan Karbovnyk, Marina Konuhova, Nadezda Kongi, Anatoli Popov
{"title":"Fractal geometry and morphological assessment of Metal-Dielectric nanocomposite films","authors":"Ivan Bolesta, Oleksii Kushnir, Halyna Klym, Ivan Karbovnyk, Marina Konuhova, Nadezda Kongi, Anatoli Popov","doi":"10.1007/s00339-025-08998-7","DOIUrl":"10.1007/s00339-025-08998-7","url":null,"abstract":"<div><p>This work investigates the morphology and fractal characteristics of silver and gold films obtained by thermal evaporation at pre-percolation thicknesses. They contain both metallic and insulating (void) phases, making them metal-dielectric composites. The fractal dimensions were evaluated using two approaches: the box-counting method (Hausdorff dimension) and correlation function analysis (correlation dimension). The dependence of the fractal parameters on the films’ mass thickness was established. It was shown that values of correlation dimension are smaller than the Hausdorff dimension for both Ag and Au films, consistent with the theoretical framework of multifractal analysis. The results confirm the multifractal nature of ultrathin metallic films and highlight the significant influence of morphology on their optical and plasmonic properties. The results confirm the multifractal nature of ultrathin metallic films and highlight the significant influence of morphology on their plasmonic properties.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-10DOI: 10.1007/s00339-025-08934-9
A. Ratep, A. Metwally, I. Kashif
{"title":"Effect of substituting Bi2O3 with ZnO in Borate glass containing dysprosium oxide on structural and optical properties","authors":"A. Ratep, A. Metwally, I. Kashif","doi":"10.1007/s00339-025-08934-9","DOIUrl":"10.1007/s00339-025-08934-9","url":null,"abstract":"<div><p>A series of glass samples were prepared with the following composition: 45B<sub><b>2</b></sub>O<sub><b>3</b></sub> - (50-x) Bi<sub><b>2</b></sub>O<sub><b>3</b></sub> − 5MoO<sub><b>3</b></sub> - x ZnO − 0.7 Dy<sub><b>2</b></sub>O<sub><b>3</b></sub>, where x is equal to 5, 10, 15, 20 and 25%. These samples were successfully produced using the technology of melt cooling and all of them were observed to have a yellowish-brown color. X-ray diffraction analysis (XRD) confirmed the amorphous nature of the samples. Measurements of density, molar volume and optical bandgap energy were made, revealing that these properties decreased with increasing zinc oxide content. On the contrary, the oxygen intensity and filling of the tail of the strip increased with a high zinc content. Further analysis using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) showed that the samples contained BO3, BO4, BiO3 and BiO6 groups. In addition, the ratio of bridges to non-bridge groups decreased at 25% of the zinc content. The emission spectra of the glass samples were used to compute the correlated color temperature (CCT), CIE coordinates, and intensity of yellow-to-blue emission (Y/B ratio). Furthermore, it can be claimed that ZnO-modified berate-based glass systems can reduce the Stark splitting and suitable for optoelectronics applications.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Machine—learning potential for higher-order scattering in two-dimensional PdTe2 allotropes","authors":"Yu Liu, Wenlong Li, Zhendong Li, Pei Zhang, Xinghua Li, Tao Ouyang","doi":"10.1007/s00339-025-09000-0","DOIUrl":"10.1007/s00339-025-09000-0","url":null,"abstract":"<div><p>Significant variations in macroscopic properties are observed between allotropic phases of identical chemical composition. These variations have driven fundamental research into their structure-property correlations. In this work, the moment tensor potential (MTP) method is combined with phonon Boltzmann transport theory to systematically investigate the thermal transport properties of different PdTe<sub>2</sub> allotropes, including hexagonal PdTe<sub>2</sub> (H-PdTe<sub>2</sub>), pentagonal PdTe<sub>2</sub> (P-PdTe<sub>2</sub>), and <i>β</i>-phase PdTe<sub>2</sub> (<i>β</i>-PdTe<sub>2</sub>). Considering only three-phonon scattering processes, all three allotropes of PdTe<sub>2</sub> exhibit low lattice thermal conductivity (<span>(:{k}_{L})</span>), with <i>β</i>-PdTe<sub>2</sub> possessing the lowest <span>(:{k}_{L})</span> due to the low phonon lifetime induced by the strong anharmonic scattering. Moreover, <i>β</i>-PdTe<sub>2</sub> shows pronounced anisotropic <span>(:{k}_{L})</span>. Upon further accounting for higher-order phonon (four-phonon) scattering effects, <span>(:{k}_{L})</span> of <i>β</i>-PdTe<sub>2</sub> decreases by 32.16% (x direction) and 26.25% (y direction) at 300 K, reaching ultralow values of 3.35 W·m⁻¹·K⁻¹ (x) and 0.51 W·m⁻¹·K⁻¹ (y), respectively. Moreover, for H-PdTe<sub>2</sub>, <span>(:{k}_{L})</span> decreases to 2.96 (x) and 2.96 W·m⁻¹·K⁻¹ (y) with a 12.92% reduction in both directions. For P-PdTe<sub>2</sub>,<span>(:{k}_{L})</span> decreases to 1.82 W·m⁻¹·K⁻¹ (x) and 5.14 W·m⁻¹·K⁻¹ (y) with reductions of 23.23% and 35.01%, respectively. The significant suppression of thermal conductivity by four-phonon is attributed to the large four-phonon scattering phase space in the low frequency region. This work reveals the crucial role of higher-order anharmonicity and allotropic structure in achieving ultralow <span>(:{k}_{L})</span> in PdTe<sub>2</sub> allotropes, highlighting their significant potential for thermoelectric applications.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-08DOI: 10.1007/s00339-025-09015-7
Yunhang Gu, Ying Wang, Zhenjie Gu, Jianbo Lei, Yang Yang, Yuhang Yang
{"title":"Enhancement of hardness and wear resistance of M2 high-speed steel via circular oscillating laser deposition","authors":"Yunhang Gu, Ying Wang, Zhenjie Gu, Jianbo Lei, Yang Yang, Yuhang Yang","doi":"10.1007/s00339-025-09015-7","DOIUrl":"10.1007/s00339-025-09015-7","url":null,"abstract":"<div><p>M2 high-speed steel (M2 HSS) has a martensitic matrix and high-density carbide microstructure, excellent strength and toughness, and has great potential applications in chemical, marine and military industries. However, the M2 HSS prepared by conventional Gaussian laser (GL) is prone to cracks, porosity and other defects. In this study, GL directional energy deposition of M2 HSS material was compared with specimens produced by a purpose-built circular oscillating laser (COL) directed energy deposition system. The results show that compared with GL, the COL makes the temperature distribution of the molten pool more uniform through circular scanning, reduces the local overheating phenomenon, and makes the deposited layer more flat and smooth; The induced stirring intensified Marangoni convection, promoted the formation of numerous fine, uniformly distributed carbides at grain boundaries, refined the grain structure and, consequently, increased average microhardness and improved wear resistance. Relative to GL, COL directional energy deposition of M2 HSS material exhibited a grain-size reduction of approximately 33.7%, an average microhardness increase of about 11.25% and a wear-rate reduction of roughly 58.34%. This provides a new method to solve the wear problem of M2 HSS under the severe working environment of high friction and high load.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied Physics APub Date : 2025-10-08DOI: 10.1007/s00339-025-09026-4
O. Gultepe, F. Atay
{"title":"Ligand-assisted morphological control of ZnO for photocatalytic wastewater treatment","authors":"O. Gultepe, F. Atay","doi":"10.1007/s00339-025-09026-4","DOIUrl":"10.1007/s00339-025-09026-4","url":null,"abstract":"<div><p>ZnO nanomaterials were synthesized using hexylamine and hexamine as the primary ligand and capping agent, respectively, in a novel combination. These organic molecules exhibited dual functionality by directing ZnO morphology towards columnar structures and grains. Using 100% hexamine introduced ~ 2.5 eV trap states, extending ZnO absorption into the visible region. Photoluminescence analysis demonstrated that intrinsic and HMTA-induced defect states critically govern the emission properties of ZnO nanomaterials. ZnO samples synthesized with varying hexylamine/hexamine ratios exhibited high photocatalytic degradation efficiencies (97.9% under UV and 72.4% under visible light) and retained both optical stability and photocatalytic performance after four cycles, while undergoing ligand-dependent surface reconstruction. In conclusion, ligand engineering offers a green and scalable approach for fabricating visible-light-responsive ZnO photocatalysts as an effective alternative to conventional doping or heterostructure strategies.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}