Next Materials最新文献

{"title":"Investigating the polarized emission of P3HT films and the role of GO in the interfacial layer","authors":"Aleffe Bruno Schura ,&nbsp;Ana Clarissa H. Kolbow ,&nbsp;Everton Crestani Rambo ,&nbsp;Gustavo Gonçalves Dalkiranis ,&nbsp;Cássio Araújo do Nascimento ,&nbsp;Romildo Jerônimo Ramos ,&nbsp;Alexandre Marletta ,&nbsp;Luiz Pereira ,&nbsp;José Carlos Germino ,&nbsp;Eralci Moreira Therézio","doi":"10.1016/j.nxmate.2025.100976","DOIUrl":"10.1016/j.nxmate.2025.100976","url":null,"abstract":"<div><div>In this work, P3HT:PCBM films were deposited on PEDOT:PSS and PEDOT:PSS:GO buffer layers, aiming to evaluate the impact of graphene oxide (GO) on photophysical properties using emission ellipsometry (EE). The characterization, involving Ultraviolet-Visible Absorption Spectroscopy (UV-Vis), Photoluminescence Spectroscopy (PL), Photoluminescence Excitation Spectroscopy (PLE), and EE. Morphological characterization was made using Atomic Force Microscopy (AFM). It was observed that GO significantly enhances the optical measurements and improves its interaction with PCBM. Both showed the quenching effect, as observed in the PL measurement, and contributed to a more uniform energy transfer compared to the ITO/PEDOT:PSS/P3HT, as demonstrated in the EE measurements. Raman analysis confirmed structural changes and variations in <span><math><mi>π</mi></math></span>-conjugation, with I_b/I_a ratios indicating partial preservation of molecular order in GO films. EE provided detailed polarization-resolved emission parameters; GO-containing films exhibited enhanced linear polarization (S₁/S₀) and increased circularly polarized components (S₃/S₀), suggesting improved interchain interactions and charge transfer. These effects were most evident in the combined GO and PCBM system, indicating that GO, even when restricted to the buffer layer, significantly improved the properties of the active layer.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100976"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational insights into magnetohydrodynamic flow of Cu–Al2O3/H2O hybrid nanofluid: Impact of heat generation, Newtonian heating and surface nonlinearity","authors":"Siva Nageswara Rao Thottempudi ,&nbsp;Jithender Reddy Gurejala ,&nbsp;Raja Shekar Pemmaraju ,&nbsp;Manideep Pampera","doi":"10.1016/j.nxmate.2025.100965","DOIUrl":"10.1016/j.nxmate.2025.100965","url":null,"abstract":"<div><div>The study looks at how heating with Newtonian forces affects the magnetohydrodynamic (MHD) flow of water-based copper-aluminum oxide (Cu–Al₂O₃/H₂O) hybrid nanofluids on a nonlinear surface which is stretching and shrinking. People are interested in hybrid nanofluids because they have better thermal qualities that make them useful for analysis and prediction of heat transfer in the real-life applications. Mathematical model constructed to explore the behavior of hybrid nanofluid Cu–Al₂O₃/H₂O flow over a surface with MHD, Newtonian heating effects and nonlinear stretching. The model is transformed to ordinary differential equations (ODEs) by using similarity transformations. A computational finite difference technique with the three-stage Lobatto IIIa formula was implemented through MATLAB software to explore the hybrid nanofluids. The mixed nanofluids are better at moving heat than single component nanofluids. The Newtonian heating boundary condition leads to detectable thermal changes when used instead of standard constant temperature models. The research data demonstrates that stronger magnetic fields decrease velocity profiles through Lorentz force resistance and non-linear stretching rates control fluid speed and boundary layer width. The thermal efficiency of hybrid nanofluids gets enhanced by raising the amount of Cu nanoparticles which establishes them as a promising choice for thermal management applications across various industries such as polymer extrusion and aeronautical engineering as well as biomedical cooling systems. This research delivers vital information about hybrid nanofluids' behavior during Newtonian heating and MHD conditions that supports intelligent cooling system and efficient heat transfer technology development.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100965"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biopolymer-enhanced PVA hydrogels for DNA delivery: Structural and functional characterization","authors":"Jailson A. Santos ,&nbsp;Maria Mendes ,&nbsp;Dina Murtinho ,&nbsp;Carla Vitorino ,&nbsp;Edson C. Silva-Filho ,&nbsp;Artur J.M. Valente ,&nbsp;Edvani C. Muniz","doi":"10.1016/j.nxmate.2025.100944","DOIUrl":"10.1016/j.nxmate.2025.100944","url":null,"abstract":"<div><div>Hydrogels are versatile materials with significant potential in biomedical applications, particularly for controlled release systems. In this study, poly(vinyl alcohol) (PVA)-based hydrogels were developed by incorporating chitosan (CHI), poly(ethylene glycol) (PEG), and poly(lactic acid) (PLA) to tailor their physicochemical and mechanical properties. FTIR analysis confirmed successful polymer integration, which influenced the hydrogels’ swelling behavior, viscosity, and thermal stability. Texture profile analysis demonstrated that polymer addition modulated mechanical characteristics such as compressibility, hardness, and cohesiveness, with PVA-CHI showing enhanced structural cohesion. Rheological measurements, including stress and frequency sweep tests, revealed viscoelastic behavior typical of soft hydrogels. The storage modulus (G′) was generally higher than the loss modulus (G″), indicating elastic dominance. PVA-PLA exhibited the highest stiffness, while PVA-CHI maintained structural integrity under deformation. The complex viscosity increased at low frequencies, especially for PVA-PLA, indicating a more robust network. To evaluate the hydrogels’ potential for gene delivery, DNA release studies were performed in PBS. The release was generally low across formulations, with PVA-CHI exhibiting the highest cumulative release. Release kinetics followed a pseudo-second-order model, suggesting a mechanism influenced by both diffusion and interactions between DNA and the polymer matrix. Scanning electron microscopy confirmed structural changes due to polymer blending, affecting both surface and internal morphology. These results demonstrate that the incorporation of specific polymers into PVA hydrogels can be strategically used to modulate their mechanical behavior and drug delivery performance, offering promising potential for biomedical applications such as tissue engineering and gene therapy.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100944"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physics-informed modeling and process optimization of friction stir welding of AA7075-T6 with a zinc interlayer","authors":"Dejene Alemayehu Ifa ,&nbsp;Dame Alemayehu Efa ,&nbsp;Naol Dessalegn Dejene ,&nbsp;Sololo Kebede Nemomsa","doi":"10.1016/j.nxmate.2025.100999","DOIUrl":"10.1016/j.nxmate.2025.100999","url":null,"abstract":"<div><div>Friction Stir Welding (FSW) is a solid-state joining method commonly used for joining both similar and dissimilar high-strength, low-melting-point alloys like AA7075-T6. However, the conventional FSW of AA7075-T6 continues to face challenges, including inadequate joint strength, poor interfacial bonding due to inadequate wettability and diffusion, corrosion susceptibility, non-uniform heat distribution, and defects. This study is the first to combine a zinc interlayer with machine learning (ML) based optimization in the FSW of AA7075-T6. Artificial Neural Networks (ANN), Support Vector Regression (SVR), Random Forest Regression (RFR), a Genetic Algorithm (GA) for optimization, and Response Surface Methodology (RSM) for statistical modeling were used to analyze a dataset of 60 observations. The models that are included in the hybrid framework of ANN, SVR, and RFR have all demonstrated noteworthy prediction strengths. The optimum FSW parameters were shown to be: a tool speed of 600 rpm, a pin radius of 5.71 mm, a shoulder radius of 20 mm, and a plunge force of 6369.48 N, with a predicted peak temperature value of 675.71 K. The ANN model yielded an extremely low prediction error of 0.973 %, while the validation through FEA showed an accuracy with only 1.79 % deviation. The efficiency of this framework in optimizing the FSW of AA7075-T6 was confirmed by the significant improvement in thermal performance caused by the zinc interlayer.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100999"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous-flow photocatalytic reduction of chromium (VI) using titanium dioxide supported on a cellulosic material: Effects of operational parameters and scavenger study","authors":"Sana Esserrar,&nbsp;Anas Salhi,&nbsp;Mohammed El Amine Ghanjaoui,&nbsp;Mohammed El Krati,&nbsp;Soufiane Tahiri","doi":"10.1016/j.nxmate.2025.100991","DOIUrl":"10.1016/j.nxmate.2025.100991","url":null,"abstract":"<div><div>Separating suspended titanium dioxide (TiO₂) from the reaction medium presents a considerable challenge in conventional photocatalysis, often resulting in higher treatment costs. However, employing TiO₂ immobilized on a support can effectively mitigate this problem. This study aims to use a catalytic sheet containing TiO₂ for reducing hexavalent chromium (Cr(VI)) in aqueous solutions circulating within a photo-reactor. Continuous flow systems are easier to scale up for industrial applications, allowing for larger volumes of treatment or production. The impacts of pH, irradiation duration, concentration of chromium, treatment volume, feed flow rate, and the presence of inorganic salts and scavengers were evaluated. The reduction process reaches its maximum at pH 2 and can significantly be enhanced when hole scavengers such as ethanol, citric acid, oxalic acid, and hydrogen peroxide are added to reaction medium. In contrast, chloroform and inorganic salts exhibit inhibitory effects on the process. The reduction mechanism relies on superoxide radicals (•O₂^-) and electrons (e^-) on TiO₂ conduction band (CB). Moreover, the findings suggested that the catalytic material demonstrated outstanding reusability and stability across multiple cycles.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100991"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart phone-assisted colorimetric detection of iron using Terminalia chebula coated amine functionalized mesoporous silica nanoparticles","authors":"Arighna Saha ,&nbsp;Snehasis Bhakta ,&nbsp;Goutam Biswas","doi":"10.1016/j.nxmate.2025.100981","DOIUrl":"10.1016/j.nxmate.2025.100981","url":null,"abstract":"<div><div>Iron (Fe) is an important element for most of the living organisms. Excessive iron consumption can lead to several health issues. Herein, we developed a simple, cost-effective, smartphone-assisted colorimetric detection strategy for both Fe^2 + and Fe³⁺. Extract from <em>Terminalia chebula</em> (<em>T. Chebula</em>) can show a color change from yellow to blue when interacting with iron. By applying this simple chemistry, we synthesized <em>T. Chebula</em>-coated APTES functionalized mesoporous silica nanoparticles (TC-APTES@MSN) and detected iron in water. The white color, porosity of MSN, amine functionalization from APTES, and sensing property of <em>T. Chebula</em> synergistically work to enhance the sensing mechanism. The application of the APTES coating altered the surface charge from negative to positive, effectively facilitating the coating of <em>T. Chebula</em> on the white background of MSN. Subsequent color changes following the interaction with Fe²⁺ and Fe³⁺ ions ultimately elucidated the entire sensing mechanism. All the synthesis steps were thoroughly characterized using Raman spectroscopy, infrared spectroscopy, scanning electron microscopy (SEM), and thermogravimetric analysis. We used an iPhone 13 camera to capture images of different colors and analyzed them using ImageJ software to extract the R, G, and B values. Finally, the PLS regression method was applied to establish an equation that can be used to determine the unknown concentration of Fe ions. Although the detection strategy is similar to the spectrophotometric method, it is rapid, easy, and cost-effective . This TC-APTES@MSN sensor could detect very low concentrations of 5 ppm and a maximum of up to 20 ppm for both Fe²⁺ and Fe³⁺ in aqueous solution; beyond this concentration, the surface color of the sensor became indistinguishable.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100981"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly synthesis of red fluorescent graphene quantum dots from Alstonia scholaris for optoelectronic detection of nitroaromatic compounds","authors":"Rachita Newar ,&nbsp;Nasrin Sultana ,&nbsp;Kalpajit Dutta ,&nbsp;Hemen Sarma ,&nbsp;Arabinda Baruah","doi":"10.1016/j.nxmate.2025.100995","DOIUrl":"10.1016/j.nxmate.2025.100995","url":null,"abstract":"<div><div>The synthesis of graphene oxide (GO) using green precursors has garnered significant attention due to its efficiency in various applications. Herein, we have synthesized red fluorescent graphene quantum dots (RGQDs) using GO and a bio-precursor, <em>Alstonia scholaris (AS)</em> leaf extract, as capping and stabilizing agents. AS leaves are rich in polyphenols, which can serve as an effective bio-reagent for the synthesis of RGQDs. For the synthesis of RGQDs, we have adopted a simple hydrothermal approach. After the successful synthesis of the material, we developed a fluorometric and electrical sensing platform for detecting picric acid (PA) and para-nitrophenol (PnPh). Both PA and PnPh are hazardous environmental pollutants. The RGQDs exhibited exceptional sensitivity and selectivity towards PA and PnPh, with optical sensing limits of 0.288 µM and 0.322 µM, respectively. Additionally, a biodegradable and cost-effective electrical sensor was also fabricated for detecting the same, achieving a lower detection limit of 1.17 µM and 0.71 µM for PA and PnPh, respectively, which exemplifies the superior analytical precision and sensitivity of the sensor. In addition to developing the sensing platforms, we investigated the antibacterial activity of RGQDs against both <em>Staphylococcus aureus</em> (a Gram-positive bacterium) and <em>Escherichia coli</em> (a Gram-negative bacterium). Antibacterial activity was evaluated through standard microbiological analysis, including minimum inhibitory concentration (MIC) measurements. The MIC estimations against <em>S. aureus</em> and <em>E. coli</em> are 24.76 ± 1.53 µg/mL-1 and 21.966 ± 1.104 µg/mL-1, respectively. The RGQDs demonstrated potent antibacterial effects, with significant growth inhibition capacity for both bacterial strains. In summary, this work presents a novel method for synthesizing RGQDs with dual-mode detection capabilities and significant antibacterial properties.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100995"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Customizing the elastic, thermodynamic and optical properties of Cu, Zn and Mn transition metal doped Zr2B4 ceramics: A first-principles perspective","authors":"Israt Sarmin ,&nbsp;Kamal Hossain ,&nbsp;Mohammad Tanvir Ahmed ,&nbsp;Hind Adawi ,&nbsp;H. Akther ,&nbsp;Amun Amri ,&nbsp;M.Mahbubur Rahman","doi":"10.1016/j.nxmate.2025.100942","DOIUrl":"10.1016/j.nxmate.2025.100942","url":null,"abstract":"<div><div>This study presents a first-principles-based analysis using density functional theory (DFT) to realize the impact of doping Cu, Zn and Mn transition metals on the structural, elastic, thermodynamic, and optical properties of Zr₂B₄ ceramics. The lattice parameters of Zr₂B₄ ceramics were altered due to the metal doping. Mulliken charge, Hirshfeld charge and bond lengths of all the ceramic structures were also significantly modified due to the dopants. The doping elements strongly influenced the bulk and shear modulus of Zr₂B₄ ceramics. We found that Zr₂B₄, ZrZnB₄, and ZrMnB4 are brittle, while ZrCuB₄ ceramic was ductile. Band gap is absent in the Fermi energy level of the parent and doped ceramics, resulting in metallic characteristics. The PDOS analysis showed that Mn-doped Zr₂B₄ ceramics contribute most at the Fermi level of ZrMnB₄, and B contributes the most to the ZrCuB₄ and ZrZnB₄ ceramics. The Debye temperature follows an ascending order of the form ZrCuB₄ &lt;ZrMnB₄ &lt;Zr₂B₄ &lt;ZrZnB₄. A maximum Debye temperature of 1244 K was observed for ZrZnB₄ ceramics. This makes it suitable for high-temperature applications, such as thermal protection systems, hot gas valve parts, and aero-engine components. The pristine and doped Zr₂B₄ ceramics exhibited high optical conductivity in the lowest energy range. The highest static refractive index <em>n</em>(0) = 9.06 was recorded for ZrM<em>n</em>B₄ ceramics. The metallic elements Cu, Mn, and Zn are believed to be beneficial in improving the mechanical and thermodynamic properties of Zr₂B₄ ceramics. Doping with Mn improves the ductile characteristic more than doping with Zn. Thus, Mn-doped Zr₂B₄ can be used in the construction, automotive, aerospace, and manufacturing industries.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100942"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomechanics of interfaces for cemented joint replacements: A systematic review","authors":"Ajay Kumar","doi":"10.1016/j.nxmate.2025.100943","DOIUrl":"10.1016/j.nxmate.2025.100943","url":null,"abstract":"<div><div>The fixation of cemented implants in joint replacement procedures involves two critical interfaces: the bone-cement interface and the cement-implant interface. Although cemented implants—such as those used in hip, shoulder, elbow, vertebrae, knee, and ankle arthroplasty—are often preferred over uncemented ones in specific patient populations, failure can still occur due to suboptimal interfacial conditions. Therefore, a comprehensive understanding of the interfacial factors influencing mechanical integrity and long-term implant performance is essential for orthopaedic surgeons, clinicians, and biomedical researchers. This review focuses on evaluating the role of key factors in relation to interfacial failure mechanisms, debonding strength, fracture behaviour, implant stability, and revision rates of cemented implants. Key interfacial characteristics, including interfacial friction, surface coatings, surface roughness, groove geometry, porosity, cement spacers, implant design, cement viscosity, mantle thickness, and penetration depth, have been identified as major contributors to the interfacial mechanical integrity of cemented implants. Emphasizing the mechanical behaviour and structural integrity of the bone-cement and cement-implant interfaces, this study presents a biomechanical perspective to enhance the understanding of orthopaedic applications. The review incorporates findings from experimental, computational, and clinical follow-up studies, highlighting the role of PMMA bone cement in improving interfacial biomechanics. Moreover, it identifies critical research gaps and methodological limitations within existing literature. Addressing these gaps through future investigations will contribute to optimizing the fixation, stability, and long-term performance of cemented implants in clinical settings.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100943"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of hybrid mesoporous silica-iron oxide nanocomposite as a potential contrast agent for photoacoustic imaging","authors":"Ana C.A.R. Vale ,&nbsp;Rubênia S. Monte ,&nbsp;Avishek Das ,&nbsp;Leandro A. de Azevedo ,&nbsp;Rodolfo B. Silva ,&nbsp;Anderson S.L. Gomes ,&nbsp;Severino A. Júnior","doi":"10.1016/j.nxmate.2025.100992","DOIUrl":"10.1016/j.nxmate.2025.100992","url":null,"abstract":"<div><div>This study presents the synthesis and characterization of a hybrid mesoporous silica-iron oxide nanocomposite (MCM-48/FeNPs), with the goal of exploring its potential application as a contrast agent in photoacoustic imaging. The FeNPs were grown on the MCM-48 structure by in situ methodology performed by wet impregnation with Fe (III). Detailed structural and morphological analyses were conducted, revealing the successful integration of iron oxide within the silica matrix and the preservation of the mesoporous structure. Scanning and transmission micrographs showed FeNPs in the internal and external areas of MCM-48, increasing the size of the silica pores. The MCM-48/FeNPs had an average size of 260 nm and were spherical. The photoacoustic imaging study of the hybrid nanocomposite using a 532 nm and 1064 nm laser produced images with high contrast, excellent spatial resolution, and strong signal intensity. It is hypothesized that the mesoporous silica matrix contributes to the amplification of the generated signal. These results highlight the promising potential of these nanoparticles for obtaining biomedical images with both spatial and depth resolution.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100992"},"PeriodicalIF":0.0,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}