Materials Today Nano最新文献

{"title":"Asymmetric layered films deliver low-reflection EMI protection and thermal–electric co-functionality","authors":"Yageng Bai,&nbsp;Han Wu,&nbsp;Yuxuan Gu,&nbsp;Zifan Bai,&nbsp;Wenchong Zhang,&nbsp;Yuansheng Ding,&nbsp;Jianxin Mu","doi":"10.1016/j.mtnano.2026.100912","DOIUrl":"10.1016/j.mtnano.2026.100912","url":null,"abstract":"<div><div>As electromagnetic (EM) pollution intensifies, EM interference (EMI) shielding materials with both high shielding effectiveness and low reflection are urgently required. In this study, an asymmetric layered composite film architecture is proposed to achieve absorption-dominant, low-reflection shielding. A heterostructured absorber, CNTs@Co@MoS₂ (CCM), is fabricated through continuous floating-catalyst chemical vapor deposition of CNT films, followed by high-temperature carbonization and <em>in situ</em> hydrothermal growth. An optimized CCM mass ratio of 1:6 maximizes the synergy between dielectric and magnetic losses while improving impedance matching, resulting in strong microwave absorption (RL_min = −53.59 dB; EAB_max = 6.96 GHz with full Ku-band coverage) and minimal radar cross-section scattering. Based on this absorber, CCMF-GMF films are assembled through electrostatic spraying/electrospinning and hot-press lamination, comprising a CNTs@Co@MoS₂/FPEEK impedance-matching/absorbing layer and a GnPs&amp;MWCNTs/FPEEK conductive reflecting layer. The resulting films exhibit high EMI shielding effectiveness across 8–18 GHz (≈69.8 dB), with significantly reduced reflection (R &lt; 0.5) and stable performance under temperature fluctuations. Moreover, the films provide integrated thermal management and enable stable photothermal–electric output when coupled with a thermoelectric module, offering a versatile platform for next-generation low-reflection EMI shielding materials.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100912"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148730526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting H2O2 dismutation via the rational design of bifunctional Ru3+–Lewis base sites on halloysite nanotubes","authors":"Jiaying Yu,&nbsp;Alessandra Zizzari,&nbsp;Monica Bianco,&nbsp;Ilenia Viola,&nbsp;Elisabetta Perrone,&nbsp;Yuxing Huang,&nbsp;Valentina Arima,&nbsp;Mauro Carraro","doi":"10.1016/j.mtnano.2026.100921","DOIUrl":"10.1016/j.mtnano.2026.100921","url":null,"abstract":"<div><div>In this study, we report the crafting of Ru-doped binary MgAl-Layered double hydroxides (Ru-LDHs) vertically standing on the surface of carboxylic acid groups-functionalized HNTs (denoted Ru-LDHs/HNTs), aiming at constructing a bifunctional catalyst with both Lewis basic sites and metal sites. The grafted MgAl-LDHs enable a full exposure of Lewis basic sites (i.e., Mg-O^2-) as well as of highly active Ru³⁺ species. Intriguingly, the strong Lewis basic sites assist the Ru³⁺ centers during H₂O₂ activation, thereby generating a strong catalytic synergy for H₂O₂ dismutation. Consequently, the Ru-LDHs/HNTs display excellent activity for the H₂O₂ dismutation with a maximum reaction rate of ∼0.2 μmol O₂ s⁻¹, much higher than the counterpart without Lewis basic sites. The catalyst retained approximately 95% of its initial O₂ yield after three consecutive reuse cycles. Notably, under the applied assay conditions, Ru-LDHs/HNTs exhibited a marked suppression of detectable hydroxyl-radical formation, demonstrating the great activity of such bifunctional catalysts as antioxidant systems. The behaviour of the functional HNTs has been finally investigated to assess their mobility when placed on a surface and in microchannels, given their potential applications as microswimmers for <em>in vitro</em> chemotactic models, and as microsensors for environmental or food safety monitoring.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100921"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148730528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electronegativity as a descriptor for built-in field engineering in Janus M2XYZ (M=Bi, Sb; X/Y/Z=S, Se, Te) monolayer","authors":"Yapeng Wang,&nbsp;Qian Chen,&nbsp;Quan Xie,&nbsp;Tinghong Gao,&nbsp;Yongchao Liang","doi":"10.1016/j.mtnano.2026.100937","DOIUrl":"10.1016/j.mtnano.2026.100937","url":null,"abstract":"<div><div>Photocatalytic water splitting is crucial for tackling energy shortages and environmental pollution. Janus materials, with their asymmetric structures and intrinsic electric fields, are highly valued for this purpose. Through first-principles calculations, we examine Janus M₂XYZ (M = Bi, Sb; X/Y/Z = S, Se, Te; X≠Y≠Z) monolayers and reveal their robust structural stability, band gaps of 1.11-1.75 eV at the HSE06 level (reduced below 1.23 eV upon inclusion of spin-orbit coupling), strong absorption of visible-to-ultraviolet light, and elevated carrier mobility (electrons: 10³ cm² V⁻¹ s⁻¹; holes: 10² cm² V⁻¹ s⁻¹). The corrected solar-to-hydrogen (STH) efficiencies—calculated as theoretical optical absorption limits—surpass 24 %, with Sb₂SSeTe achieving 28.80 %. Mechanistically, the kinetics of the hydrogen evolution reaction (HER) are influenced by the adsorption strength of the X-layer, while the oxygen evolution reaction (OER) activity is enhanced by the presence of a built-in electric field. Notably, we establish a linear relationship between the difference in surface electronegativity and built-in electric field (<strong>ΔΦ ∝ Δχ</strong>), providing a straightforward descriptor for the rational design of Janus-based heterostructures.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100937"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-functional plasmonic Au-TiO2-integrated polycaprolactone-cellulose acetate nanofibrous scaffolds for synergistic photothermal osteosarcoma therapy and bone tissue regeneration","authors":"Richa Jaswal,&nbsp;Seo Yeon Lee,&nbsp;Kavitha Gopal,&nbsp;Devendra Shrestha,&nbsp;Joshua Lee,&nbsp;Dinesh Kumar,&nbsp;Hyo Sung Kwak,&nbsp;Chan Hee Park","doi":"10.1016/j.mtnano.2026.100894","DOIUrl":"10.1016/j.mtnano.2026.100894","url":null,"abstract":"<div><div>Herein, biocompatible bifunctional polycaprolactone and cellulose acetate-based (PCA) nanofibrous scaffolds incorporating core-shell Au-TiO₂ nanoparticles were fabricated for bone cancer photo-ablation and bone tissue regeneration. Gold nanoparticles (30 nm) were coated with TiO₂ (12 nm) in a core-shell form, and the core-shell Au-TiO₂ nanoparticles were integrated into PCA in 0.5, 1.0, and 2.0 mg to prepare a randomly oriented PCA@Au-TiO₂ nanofiber. PCA@Au-TiO₂ significantly improved the mechanical strength, electrical conductivity, photothermal activity, protein adsorption capacity, and osteogenic performance while maintaining excellent biocompatibility. PCA@Au-TiO₂ demonstrated superior therapeutic efficacy, with 89% of ablation of MG-63 bone cancer cells under low near-infrared (NIR) power density (0.5 W/cm²) irradiation, by maximizing cell alteration, cytoskeletal damage, and apoptosis, as validated by live/dead staining, confocal microscopy, and flow cytometry analysis. FACS analysis revealed a 74% apoptotic cell rate with PCA@Au-TiO₂ (2.0 mg) compared to PCA (0.2%), suggesting that PCA@Au-TiO₂ induced highly efficient MG-63 cell apoptosis. Also, PCA@Au-TiO₂ supported robust proliferation of MC3T3-E1 pre-osteoblasts and significantly enhanced osteogenic differentiation, as evidenced by elevated ALP activity, mineral deposition (ARS and von Kossa staining), and increased expression of osteogenic markers, including osteopontin and collagen-I. The results suggested PCA@Au-TiO₂ as a promising platform for bone cancer therapy and bone tissue regeneration.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100894"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148642086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From waste to catalyst: Engineering brush-like Co/Zn nanoclusters on biomass-derived carbon for peroxymonosulfate activation","authors":"Bao-Ying Wang,&nbsp;Huan-Yan Xu,&nbsp;Jing-Ming Lan,&nbsp;Bo Li","doi":"10.1016/j.mtnano.2026.100898","DOIUrl":"10.1016/j.mtnano.2026.100898","url":null,"abstract":"<div><div>Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) provide an efficient and eco-friendly method for degrading organic pollutants in water, yet monometallic activators are limited by active-site aggregation. One-dimensional carbon nanotubes, with their rich surface functionality, offer an ideal platform to overcome this limitation by stabilizing synergistic bimetallic active centers. In this work, Co/Zn nanoclusters were controllably grown on biomass-derived one-dimensional carbon, yielding the composite catalyst Co/Zn@ABC. In this architecture, carbon nanotubes serve dual roles as a morphological template and a growth substrate for in-situ Co/Zn deposition. The resulting hierarchical structure features zero-dimensional metal nanoparticles anchored on one-dimensional carbon nanotubes, while the interwoven nanotubes and nanocluster form a three-dimensional interconnected network. Through its multi-scale architecture, the material provides high exposure of active sites and enables rapid electron transport, leading to markedly enhanced PMS activation. Degradation experiments demonstrated that Co/Zn@ABC achieves 81% removal of high-concentration tetracycline within 10 min. Quenching tests and electron paramagnetic resonance spectroscopy identified ¹O₂ and O₂^•- as the primary reactive species, with SO₄^•- and •OH playing subsidiary roles. Density functional theory calculations based on Fukui functions and molecular orbital theory further elucidated the radical-attack sites and electronic-level reaction pathways. This study not only presents a viable strategy for valorizing biomass into functional catalysts but also provides a material and theoretical foundation for the design of high-performance bimetallic PMS activators, advancing the practical application of AOPs in water treatment.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100898"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148642088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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-enabled performance prediction and design for flexible strain sensors","authors":"Yingnan Wu,&nbsp;Zijing Dong,&nbsp;Zhiyuan Sun,&nbsp;Chao Zhi,&nbsp;Zhe Liu,&nbsp;Xingzhong Gao,&nbsp;Yanli Sun,&nbsp;Qi Wang,&nbsp;Xiaolin Zhang,&nbsp;Siman Li,&nbsp;Chenxi Yang,&nbsp;Jindi Chen,&nbsp;Lingjie Yu","doi":"10.1016/j.mtnano.2026.100887","DOIUrl":"10.1016/j.mtnano.2026.100887","url":null,"abstract":"<div><div>The sensing performance of carbon-based flexible strain sensors is largely governed by processing parameters. Therefore, the exploration of optimal processing parameters is of great significance to the enhancement of material properties. However, the complex coupling among multiple variables renders conventional trial-and-error optimization inefficient. Here, a data-driven prediction–optimization strategy integrating design of experiments (DoE) with machine learning (ML) is established to accelerate the regulation of sensing performance in a thermoplastic polyurethane/carbon nanotube-carbon fiber/thermoplastic polyurethane (TPU/CNTs-CF/TPU) strain sensor. Uniform and information-rich experimental datasets are constructed within a high-dimensional parameter space, and a multilayer perceptron (MLP) model is trained to characterize the relationship between processing parameters and sensing performance. SHAP-based interpretability analysis is further employed to quantitatively elucidate the contribution mechanisms of key factors, including carbon loading and carbon nanotube ratio, thereby guiding targeted experiments in high-sensitivity regions and enabling iterative optimization through dataset expansion. As a result, the sensor sensitivity is markedly improved, with the gauge factor (GF) increasing from 15 to 105 while maintaining high predictive accuracy (R² = 0.96). The trained model is subsequently used to screen 600 randomly sampled parameter combinations, from which two optimal candidates are identified and experimentally validated, yielding relative prediction errors as low as 2.3% and 3.1% at 80% strain. Moreover, the optimized sensors exhibit excellent stability under cyclic loading and human-motion monitoring. This work provides an efficient and interpretable paradigm for regulating material–process–performance relationships in flexible electronics, substantially reducing experimental cost and offering broad methodological guidance for high-performance flexible sensing systems.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100887"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148642142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of grain size distribution in regulating the phase transformation behavior of polycrystalline NiTiCu shape memory alloys","authors":"Shuai Wang,&nbsp;Xiang Zhu,&nbsp;Liangliang Chu,&nbsp;Guansuo Dui","doi":"10.1016/j.mtnano.2026.100893","DOIUrl":"10.1016/j.mtnano.2026.100893","url":null,"abstract":"<div><div>NiTiCu shape memory alloys have attracted considerable attention in precision sensing owing to their exceptionally narrow transformation hysteresis. However, how the spatial distribution of grain sizes influences their superelastic behavior remains poorly understood. In this study, molecular dynamics simulations were employed to elucidate the microscopic mechanisms governing martensitic transformation in polycrystalline NiTiCu alloys with uniform, bimodal, and gradient grain size distributions. Uniform nanograined structures exhibit high strength, but dense grain boundaries inhibit transformation and promote localized martensite bands, increasing energy dissipation and irrecoverable deformation, leading to pronounced hysteresis that can be alleviated by larger grains. Bimodal distributions maintain fine grains while reducing overall grain boundary density, concentrating transformation within coarse-grained regions, thereby lowering energy dissipation and suppressing irrecoverable deformation. Gradient structures suppress strain localization by promoting spatially diffuse, progressive transformation, preventing local strain concentration. A surface-to-interior grain refinement generates dense martensitic variant interfaces, synergistically enhancing strength and energy dissipation. Conversely, a surface-to-interior grain coarsening simplifies the transformation pathway, further reducing hysteresis. These atomic-scale insights provide a theoretical foundation for designing low-hysteresis, high-performance shape memory alloys.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100893"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148642143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction of Co (Ni) substituents at the edges of MoS2 nanosheets to improve the efficiency of sodium-ion battery anodes","authors":"Alena A. Zaguzina,&nbsp;Victor A. Alekseev,&nbsp;Anastasiya D. Fedorenko,&nbsp;Elena V. Lisitsa,&nbsp;Svetlana V. Trubina,&nbsp;Valentina V. Zvereva,&nbsp;Vladimir V. Kriventsov,&nbsp;Yury V. Shubin,&nbsp;Tao Liu,&nbsp;Alexander V. Okotrub,&nbsp;Lyubov G. Bulusheva","doi":"10.1016/j.mtnano.2026.100899","DOIUrl":"10.1016/j.mtnano.2026.100899","url":null,"abstract":"<div><div>MoS₂ nanomaterials with varying Co or Ni substituent contents were synthesized by rapid thermolysis of mixed aerogels of ammonium tetrathiomolybdate and cobalt or nickel acetate in an inert atmosphere. Electron microscopy studies of the samples revealed microdefects in the structure of the MoS₂ platelets arising from gas evolution during decomposition of the acetate moiety. X-ray photoelectron spectroscopy data showed that Co and Ni are in the 2+ oxidation state, and their introduction into MoS₂ lowers the Fermi level. Extended X-ray absorption fine structure spectroscopy indicated that both Co and Ni are coordinated by four sulfur atoms, consistent with the substitution of Mo atoms at the edges of the MoS₂ nanosheets. Testing of samples as anodes for sodium-ion batteries (SIBs) demonstrated optimal performance for MoS₂ with 1–2% Co (Ni) substitution. The reversible specific capacity of the best samples after 55 discharge/charge cycles was ∼500 mAh·g⁻¹ at a current density of 0.1 A·g⁻¹. Analysis of cyclic voltammetry curves measured after more than 60 cycles revealed peaks of redox reactions corresponding to the reversible intercalation of Na⁺ ions between MoS₂ nanosheets. SIBs with Co-MoS₂ or Ni-MoS₂ anodes sustained a current density of 10 A·g⁻¹, while the Co-doped sample retained an exceptional capacity of 150 mAh·g⁻¹ after 1000 cycles. The superior rate performance of Co-MoS₂ is attributed to the higher electron density near the Fermi level provided by the Co substituents, as confirmed by density functional theory calculations.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100899"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148642093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal organic framework-derived hollow structures for environmental remediation and wastewater treatment: The nexus of experimental, artificial intelligence, and machine learning approaches","authors":"Iftikhar Hussain,&nbsp;Karanpal Singh,&nbsp;Riffat Amna,&nbsp;Abdullah Al Mahmud,&nbsp;Shabhe Haider,&nbsp;Khalid Aljohani,&nbsp;P. Rosaiah,&nbsp;Uzair Sajjad,&nbsp;Wail Al Zoubi,&nbsp;Sajjad Hussain","doi":"10.1016/j.mtnano.2026.100909","DOIUrl":"10.1016/j.mtnano.2026.100909","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs)-porous hybrid materials formed by the self-assembly of metal ions/clusters with organic ligands offer exceptional versatility and precise composition control without losing their structural integrity. Through various controlled routes, MOFs readily convert into nanostructured hollow porous materials (NHPMs), such as metal oxides, sulfides, and beyond. Featuring high surface areas and interconnected pore networks, these derivative NHPMs play a critical role in environmental remediation and wastewater treatment. This review highlights the MOF-derived NHPMs for environmental remediation and wastewater treatment. Further, Artificial intelligence and Machine learning approaches have been discussed. Finally, current challenges in the field and potential future directions are discussed.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100909"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148730378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of machine learning for accurate prediction of graphene-based terahertz metamaterial sensor performance","authors":"Youssef Amraoui,&nbsp;Imane Halkhams,&nbsp;Rachid El Alami,&nbsp;Mohammed Ouazzani Jamil,&nbsp;Hassan Qjidaa","doi":"10.1016/j.mtnano.2026.100911","DOIUrl":"10.1016/j.mtnano.2026.100911","url":null,"abstract":"<div><div>This paper presents a high-performance sensor based on a tunable dual-band metamaterial absorber for terahertz (THz) applications. The suggested design has a compact size of 20.5 × 20.5 × 14 μm³ and exhibits near-unity absorption peaks of 99.82% and 99.88% at 2.9215 THz and 9.0199 THz, respectively. Owing to the tunable surface conductivity of graphene, the sensor enables dynamic control of its electromagnetic response. The proposed absorber is employed to evaluate the sensing performance in terms of analyte thickness and refractive index (RI). The sensor achieves a sensitivity of approximately 495 GHz/RIU for a 1 μm-thick analyte with a refractive index ranging from 1.32 to 1.40, along with quality factors of up to 2.6 at the first resonant frequency and 51.9 at the second resonant frequency. To address the high computational cost associated with full-wave electromagnetic simulations, several supervised machine learning models are implemented to predict the absorptivity response based on key physical parameters. A comparative study involving Random Forest, Decision Tree, K-Nearest Neighbors, and Gradient Boosting Regression is conducted. Among these models, Random Forest demonstrates the best performance, achieving an RMSE of 0.0056, MAE of 0.0026, MSE of 0.000032, and an R² value of 0.9375. These findings demonstrate the effectiveness of combining graphene-based metamaterials with machine learning method to develop high-performance, tunable THz sensors while enabling efficient prediction and optimization of sensing performance, with potential extension to other spectral regimes.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"35 ","pages":"Article 100911"},"PeriodicalIF":7.6,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148730379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}