Results in Surfaces and Interfaces最新文献

{"title":"Computational insights into amino acid functionalized boron nitride nanotube (BNNT) as a tunable nanocarrier for drug delivery applications","authors":"J. Sneha,&nbsp;V. Abinaya,&nbsp;K. Janani Sivasankar,&nbsp;D. John Thiruvadigal","doi":"10.1016/j.rsurfi.2025.100648","DOIUrl":"10.1016/j.rsurfi.2025.100648","url":null,"abstract":"<div><div>The development of biocompatible nanocarriers with enhanced solubility and tunable electronic properties remains a pivotal focus in the field of targeted drug delivery. In this study, boron nitride nanotubes (BNNTs) are functionally modified using two amino acids: asparagine (Asn), a non-essential amino acid, and tryptophan (Trp), an essential amino acid, to overcome their intrinsic hydrophobicity and expand their biomedical applicability. Employing first-principles Density Functional Theory (DFT), we investigate the structural, electronic, and solvation characteristics of single and double functionalized BNNT systems. The results reveal a transition from sp² to partial sp³ hybridization, enhanced charge polarization, and a significant increase in aqueous solubility, particularly for the BNNT-2Asn configuration. Electronic structure analysis indicates bandgap narrowing and increased density of states near the Fermi level, while preserving semiconducting behavior suitable for responsive drug release. To demonstrate applicability, the optimized BNNT-2Asn system was evaluated for its interaction with a drug molecule, luteolin, showing favorable non-covalent binding. Overall, the findings provide valuable insights into the design of functionalized BNNTs as efficient and biocompatible nanocarriers for drug delivery.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100648"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269696","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":"Homoepitaxial growth of GaN thin film using radical assist sputter epitaxy method at low temperature","authors":"Masato Takeuchi ,&nbsp;Ryo Ishikawa ,&nbsp;Taku Hanna ,&nbsp;Seiichi Sato ,&nbsp;Tetsusei Kurashiki","doi":"10.1016/j.rsurfi.2025.100649","DOIUrl":"10.1016/j.rsurfi.2025.100649","url":null,"abstract":"<div><div>We investigated unintentionally doped-gallium nitride (GaN) thin films grown on GaN template substrates at a substrate temperature of 600 °C using our developed radical assist sputter epitaxy (RaSE) method. To achieve GaN thin films with minimal defects and a smooth surface at low temperatures, it was necessary to utilize a slightly higher Ga supply compared to that in the intermediate conditions. However, the process margin for obtaining droplet-free, high-quality films using the RaSE method was notably narrow due to the formation of Ga droplets in Ga-rich conditions. These findings highlight the need to expand the process margins for effective film growth. Additionally, a significant amount of O impurities was incorporated into the GaN thin films produced by the RaSE method, a specific challenge associated with low-temperature growth. Nonetheless, these impurities could be advantageous for fabricating n-type GaN thin films and may also be useful in creating contact layers for GaN devices that require high doping concentrations but cannot withstand high temperatures. By contrast, addressing these impurities concentration in the films will expand the applications of GaN sputter technology and realize systems such as p-GaN films.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100649"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269699","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":"Tailoring bimeron-antibimeron in Permalloy submicron dot via field–induced magnetization reversal","authors":"Praveen Palabindela ,&nbsp;Priyanka Babu ,&nbsp;Mani Bharathi M. ,&nbsp;Ajith Nix E.S.R. ,&nbsp;Kiruthiga Devi B. ,&nbsp;Jaivardhan Sinha ,&nbsp;Bhaskar Chandra Behera","doi":"10.1016/j.rsurfi.2025.100641","DOIUrl":"10.1016/j.rsurfi.2025.100641","url":null,"abstract":"<div><div>The controlled nucleation and manipulation of topological spin textures such as bimerons and antibimerons, remain significant challenges for advancing spintronic technologies. We investigate the tunable controllability and selective manipulation of bimeron and antibimeron pairs in two thicknesses (t = 2 and 4 nm) of Py sub-micron dot systems using magnetization reversal investigation in micromagnetic simulations. By systematically varying material parameters such as the Dzyaloshinskii–Moriya interaction (DMI) constant, dot thickness, and applying external bias fields, we demonstrate control over the nucleation, stability, and annihilation of bimeron-antibimeron pairs. Our results reveal that the size of the bimeron–antibimeron pair approximately reduces from 23 to 19 nm when the thickness of the dot is increased from 2 to 4 nm. It is also seen that the spatial separation of bimeron pairs is strongly dependent on the dot thickness. Notably, the selective stabilization of either bimerons or antibimerons can be achieved by adjusting the sign and magnitude of the DMI constant (D = ±3.0 mJ/m²). Finally, the application of suitable bias fields during magnetization reversal enables additional selectivity in controlling these topological spin textures. These findings provide new insights into the engineering and manipulation of topologically protected bimerons-antibimerons spin textures, highlighting their potential for future spintronic device applications.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100641"},"PeriodicalIF":0.0,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108801","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":"Effect of cryotreatment on the microstructural evolution of TiAlNiCrCo and TiAlNiCrFe high entropy alloy with nano TiC precipitates","authors":"Muhammed Muneer S ,&nbsp;Anand Sekhar R ,&nbsp;Arun B.S ,&nbsp;Faizal N.S ,&nbsp;Arjun Santhosh","doi":"10.1016/j.rsurfi.2025.100638","DOIUrl":"10.1016/j.rsurfi.2025.100638","url":null,"abstract":"<div><div>Cryogenic treatment is imperative for improving the microstructure and mechanical properties of high-entropy alloys (HEAs). This study examines the impact of Deep Cryogenic Treatment (DCT) on the microstructural development of TiAlNiCrFe and TiAlNiCrCo HEAs produced via Mechanical Alloying (MA) and Spark Plasma Sintering (SPS). X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) investigations indicate the existence of two Body-Centered Cubic (BCC) phases, accompanied by finely scattered TiC nanoparticles. Following SPS, both alloys have a stable BCC phase, whereas DCT results in a notable decrease in crystallite size and the formation of Ni₃Ti precipitates. The mechanical characterization indicates that Vickers hardness initially rises with DCT time, peaking at 4h, after which extended exposure results in a decrease. The TiAlNiCrFe alloy demonstrates an 11.25 % increase in hardness following the ideal 4h treatment. These findings underscore the efficacy of cryogenic treatment in modifying the microstructure and mechanical properties of HEAs, providing valuable insights for sophisticated structural applications.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100638"},"PeriodicalIF":0.0,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160029","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 stimuli responsive pNIPAM-co-AAc@Ag/Au bimetallic hybrids: Tunable catalytic activity by varying Ag/Au molar ratio","authors":"Amrita Ghosh Majumdar ,&nbsp;Madhuchhanda Mohanty ,&nbsp;Biswajit Pany ,&nbsp;Debdeepto Mukherjee ,&nbsp;Harshit Dev Singh ,&nbsp;Sannidhya Majumdar ,&nbsp;Satyabrata Si ,&nbsp;Priti S. Mohanty","doi":"10.1016/j.rsurfi.2025.100639","DOIUrl":"10.1016/j.rsurfi.2025.100639","url":null,"abstract":"<div><div>We report synthesis of Ag/Au bimetallic nanoparticles within a stimuli-responsive pNIPAM-co-AAc microgel matrix using seed-mediated growth strategy. By systematically varying the Au³⁺ precursor, we obtained a series of nanohybrids (MG-Ag/Au 1–9) with tunable Ag/Au molar ratios. The COO⁻ groups of the microgel facilitated stabilization of Ag/Au bimetallic NPs, enabling colloidal stability of the nanohybrids. Our UV–vis and XRD analysis confirmed formation of heterostructured Ag and Au domains rather than homogeneous alloys. Catalytic activity of these bimetallic nanocomposites was evaluated with a borohydride mediated (BH₄⁻) model reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) which shows a significant trend of gradual increase and then rapid decrease in K_app while gradually decreasing Ag/Au molar ratio. pNIPAM-co-AAc @Ag/Au 6 showed a remarkable K_app of 4.519 min⁻¹, outperforming many previously reported similar bimetallic systems. Furthermore, it showcased increased catalytic efficiency compared to their monometallic counterparts i.e. ∼8.5-fold higher than pNIPAM-co-AAc@Ag and ∼27-fold higher than pNIPAM-co-AAc@Au. In-silico molecular docking studies demonstrated binding energy of −0.57, −0.94 and −1.55 kcal/mol for BH₄⁻-NIPAM, 4-NP-COO^- and 4-NP-NIPAM. This work highlights the importance of bimetallic compositional tuning inside microgel matrix in developing efficient nanocatalysts for future applications.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100639"},"PeriodicalIF":0.0,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110121","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":"A review on multifunctional applications of nanoparticles: Analyzing their multi-physical properties","authors":"Md. Abdullah ,&nbsp;Mohammad Obayedullah ,&nbsp;Md. Shariful Islam Shuvo ,&nbsp;Md. Abul Khair ,&nbsp;Delowar Hossain ,&nbsp;Md. Nahidul Islam","doi":"10.1016/j.rsurfi.2025.100635","DOIUrl":"10.1016/j.rsurfi.2025.100635","url":null,"abstract":"<div><div>Nanoparticles display distinctive physicochemical characteristics, facilitating progress across various domains, including biomedicine, energy, the environment, and electronics. Their synthesis via bottom-up, top-down, and hybrid methods enables precise control over size, shape, and surface functionality. Techniques like TEM, SEM, DLS, and XRD offer essential insights into the structural and functional attributes. The diverse characteristics of nanoparticles mechanical, thermal, electrical, and optical are crucial for a wide array of applications, including drug delivery, imaging, energy storage, and environmental remediation. Nonetheless, obstacles related to scalability, toxicity, and stability impede their wider implementation. The ongoing investigation emphasizes the incorporation of eco-friendly synthesizer techniques and composite nanomaterials to improve performance while tackling environmental and health issues. Despite notable advancements, a substantial gap remains in the scalable production of multifunctional nanoparticles that maintain consistent quality while minimizing environmental impacts. Moreover, the absence of thorough regulatory frameworks for toxicity and safety assessment restricts their clinical and industrial uses. This study presents a unique approach by investigating hybrid synthesis techniques that integrate organic and inorganic elements, resulting in improved stability, specific functionality, and reduced negative effects. Furthermore, progress in real-time characterization and nanoscale modeling aims to accurately predict and manage aggregation and interaction dynamics. Future investigations should focus on enhancing eco-friendly synthesis methods and sophisticated characterization techniques to address issues related to reproducibility and scalability. By tackling regulatory and ethical challenges through the establishment of global standards, we can enhance the secure incorporation of nanoparticles into essential applications, promoting sustainable development throughout various sectors.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100635"},"PeriodicalIF":0.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108802","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":"Novel approach to gold ion detection in aqueous solutions using silver nanoparticles synthesized from the seed extract of mangrove associate plant Thespesia populnea","authors":"James Baben George ,&nbsp;Neethu Cyril ,&nbsp;Jyothi P. Ramachandran ,&nbsp;Remya Radhamony ,&nbsp;V.P. Sylas ,&nbsp;Sam John","doi":"10.1016/j.rsurfi.2025.100634","DOIUrl":"10.1016/j.rsurfi.2025.100634","url":null,"abstract":"<div><div>This study presents a novel, eco-friendly colorimetric sensor for the sensitive and selective detection of gold(III) ions, utilizing silver nanoparticles synthesized using <em>Thespesia populnea</em> seed kernel extract (AgNP-TPK). The green synthesis yielded stable nanoparticles, confirmed by UV–Vis, HR-TEM, XRD, DLS, and zeta potential analyses, with excellent colloidal stability lasting over six months. The sensing mechanism involves a galvanic replacement reaction where Au(III) oxidizes AgNPs, forming gold nanoparticles—visibly indicated by a distinct colour change and a hypochromic shift in the SPR peak. The sensor demonstrated strong analytical performance, with a low detection limit of 0.442 ppm and quantification limit of 1.339 ppm. Selectivity studies revealed negligible interference from common mineral mimics such as pyrite and chalcopyrite. Real sample validation using industrial runoff from a BIS-certified hallmarking facility showed significant spectral and visual changes only in the presence of gold ions, confirming the sensor's practical applicability. These findings position AgNP-TPK as a versatile, field-deployable tool for rapid gold detection in environmental monitoring, mining operations, and forensic investigations, while also promoting sustainable nanomaterial development.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100634"},"PeriodicalIF":0.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108722","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":"Toxic chromium adsorption from tannery wastewater on thermally activated Piper betle petiole adsorbent","authors":"Md Abul Hashem,&nbsp;Rafia Akter Moury,&nbsp;Md Harun Ur Rashid,&nbsp;Abid Hassan,&nbsp;Modinatul Maoya,&nbsp;Md Enamul Hasan Zahin,&nbsp;Md Mukimujjaman Miem,&nbsp;Md Shahriar Shahadat","doi":"10.1016/j.rsurfi.2025.100632","DOIUrl":"10.1016/j.rsurfi.2025.100632","url":null,"abstract":"<div><div>Chrome tanning is popular due to the exceptional properties of the final leather products. Emitted wastewater discharged from chrome tanning contains a significant amount of chromium. The release of chromium-containing wastewater into the environment creates environmental pollution. In this work, <em>Piper betle</em> petiole Thermally Activated Adsorbent (PBPTAA) is utilized to remove chromium from tannery wastewater. The PBPTAA was characterized through surface chemistry (FT-IR), surface morphology (SEM), elemental composition (EDS), and point of zero charge (pHpzc). The batch test revealed the maximum chromium removal (99.9 %) using a dose of 16 g/L wastewater for 15 min of contact time at a relative pH of 8.5. The technique showed a significant reduction of COD (39.8 %), Cl⁻ (55.6 %), and BOD (33.7 %) in the emitted wastewater. SEM and EDS analysis combined illustrated the adsorption of Cr on PBPTAA. The pHpzc showed a negative adsorbent surface, which well explained the chromium adsorption mechanism on PBPTAA with complete and partial electronegative ions by electrostatic bonding. The ΔG° measurement (−19.49 kJ mol⁻¹) at 308 K revealed a spontaneous and favorable adsorption of Cr, whereas the Cr desorption rate using HNO₃ showed significance in the economical reusability of PBPTAA. Hence, this investigation demonstrated a novel method for removing Cr from tannery wastewater using PBPTAA, anticipating an environmentally sustainable waste processing.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"21 ","pages":"Article 100632"},"PeriodicalIF":0.0,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160028","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":"Influence of g-C3N4 on the structural, optical, and morphological features of g-C3N4/ZnO nanocomposites","authors":"J. Jassi ,&nbsp;S. Deepa ,&nbsp;C.S. Chitra Lekha ,&nbsp;Nivya Mariam Paul","doi":"10.1016/j.rsurfi.2025.100608","DOIUrl":"10.1016/j.rsurfi.2025.100608","url":null,"abstract":"<div><div>Zinc Oxide (ZnO) is a low-cost, transparent II-VI semiconductor with excellent chemical and thermal stability, making it appropriate for diverse applications such as photocatalysis, gas sensing, anti-corrosion coatings, and antimicrobial agents. Graphitic Carbon Nitride (g-C₃N₄) is a polymeric nanomaterial with a crystal structure analogous to graphite with sp² hybrid carbon and nitrogen atoms that can be easily synthesized by thermal decomposition of precursors with high nitrogen content. In this report, g-C₃N₄/ZnO nanocomposites (NCs) are prepared through a chemical co-precipitation method. X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDX), Fourier Transform Infrared Spectroscopy (FTIR), UV–Visible Diffuse Reflectance Spectroscopy (UV-DRS), Photoluminescence Spectroscopy (PL), and X-ray photoelectron Spectroscopy (XPS) techniques were used for the characterization of the synthesized nanocomposites. All the studies confirm the successful coupling between g-C₃N₄ and ZnO nanostructures and the modification in the structural, optical, and morphological properties via g-C₃N₄ incorporation.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"20 ","pages":"Article 100608"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738087","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":"Simulation of neutralization processes of Mg+ and Sr+ ions on Au surfaces using the time-dependent Schrödinger equation","authors":"Shin-ichiro Kondo ,&nbsp;Tatsushi Kondo ,&nbsp;Atsushi Kondo ,&nbsp;Masaki Kato ,&nbsp;Kazuyoshi Yoshimura","doi":"10.1016/j.rsurfi.2025.100612","DOIUrl":"10.1016/j.rsurfi.2025.100612","url":null,"abstract":"<div><div>We investigated the high neutral fraction (NF) of Mg⁺ ions on Au surfaces through simulations based on solving the simultaneous differential equations derived from the time-dependent Schrödinger equation. Furthermore, we simulated the temperature dependence of the NF by a numerical method derived from the von Neumann equation. The simulation results obtained by considering the Au 6<em>s</em> + 5<em>d</em> band exhibited good agreement with experimental results, suggesting that the high NF of Mg ⁺ ions is related to the interaction between the Au 5<em>d</em> band and the Mg 3<em>s</em> orbital. The calculated temperature dependence of the NF was also in good agreement with the experimental results. By contrast, the NF of Sr⁺ ions on Au surfaces could not be explained simply by a resonant charge transfer mechanism based on the Anderson–Newns model, which implies a contribution from the <em>s</em>–<em>d</em> interaction between the Sr 5<em>s</em> orbital and the Au 5<em>d</em> band.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"20 ","pages":"Article 100612"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896509","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}