Journal of Non-crystalline Solids最新文献

{"title":"Archaeological glass altered under burial conditions: Evidence from turquoise glass beads excavated from Qinghai, China","authors":"Shasha Long ,&nbsp;Huarui Han ,&nbsp;Wenlong Bai ,&nbsp;Jianhua Han ,&nbsp;Jing Zhou ,&nbsp;Qinglin Ma ,&nbsp;Zhimin Li","doi":"10.1016/j.jnoncrysol.2025.123712","DOIUrl":"10.1016/j.jnoncrysol.2025.123712","url":null,"abstract":"<div><div>Archaeological glasses present complex alteration phenomena after long-term burial in soil, providing crucial insights into glass alteration in aqueous environments. The glass beads as important decorations were dating back to mid-8th century, excavated from Qinghai province, China. However, these glass beads have been buried in soil for approximately 1300 years and resulting in a poor state. After observation of various glass beads, four pieces from the turquoise glass beads are selected to study the morphological structural features and chemistry compositional of the alteration layer. Several scientific techniques, including optical microscopy (OM), scanning electron microscopy equipped with energy dispersive X-ray spectrometry (SEM–EDS), and micro-Raman spectroscopy, are employed for analysis. The results show that pristine glasses are made of soda-lime silicate glass (NaO<img>CaO-SiO₂), which are highly susceptible to weathering. The pristine glass transformed into a white alteration layer, which consists of laminated alteration layers and homogeneous dealkalized layer. The laminated sub-layers, with thicknesses ranging from 0.1 to 5 μm, are characterized by spherical silica particles and a minor Al-rich gel. The precipitation of amorphous silica with minor Al-rich gel forms a laminated structure with alternating light and dark features influenced by concentration differences. Inside the brittle glass, as the silica-rich alteration layers gradually replace the matrix along the network of cracks, both its appearance and overall strength are significantly altered.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123712"},"PeriodicalIF":3.5,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the influence of elevated temperatures on enamel coating: Viscosity, yield strength, stress-strain behavior and structure","authors":"Wenlong Li ,&nbsp;Gaosheng Yan ,&nbsp;Jianguo Zhu ,&nbsp;Ruijie Wang ,&nbsp;Yexin Zhou ,&nbsp;Jiaju Liu","doi":"10.1016/j.jnoncrysol.2025.123716","DOIUrl":"10.1016/j.jnoncrysol.2025.123716","url":null,"abstract":"<div><div>Enamel coatings are crucial for safeguarding key engineering components against high-temperature oxidation. An understanding of their mechanical properties, such as viscosity, yield strength, stress-strain behavior, and modulus, is essential for their high-temperature applications. Prior research typically explored these properties separately, lacking an understanding of their combined impacts. Our study uses an integrated high-temperature nanoindentation and finite-element approach to precisely characterize the viscosity, yield strength, and stress-strain of coatings under high temperatures. By considering material crushing during tip compression and adding a plastic yield function to the enamel's governing equations, our simulations match indentation data well in force-depth and creep displacement. We discovered non-monotonic changes in stress-strain with temperature. For example, their yield strength decreased from 3.6 to 1.7 GPa between 24 ˚C and 600 ˚C, then increased to 2 GPa at 700 ˚C. Additionally, there was an abnormal increase in modulus. XRD analysis shows a strong connection between internal quasi-crystalline structure changes and the unusual behavior of the stress-strain. Moreover, the elastic and viscous parameters, which we characterized using the proposed method, are independent of plastic properties. As a result, the plastic yield function can be removed from the constitutive equations, facilitating the establishment of a viscoelastic continuum model and determination of related material strength for the enamel coating at elevated temperatures. This research offers a more complete view of enamel coating mechanics at high temperatures, beneficial for enhancing their engineering applications.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123716"},"PeriodicalIF":3.5,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified approach to determination of interdiffusion coefficients of alkali ions in glasses by gravimetric method: characterization of sodium-rubidium ion exchange","authors":"A.V. Shavlovich ,&nbsp;A.A. Lipovskii ,&nbsp;M.Yu. Lipovskaia ,&nbsp;D.K. Tagantsev","doi":"10.1016/j.jnoncrysol.2025.123718","DOIUrl":"10.1016/j.jnoncrysol.2025.123718","url":null,"abstract":"<div><div>A modified gravimetric method to study the ion exchange process in glasses has been developed. It is expedient for evaluating low interdiffusion coefficients. The approach is based on measuring the dependence of the average density of plane glass samples on the ion exchange time. The developed method has been used to determine the sodium-rubidium interdiffusion coefficient, <span><math><mi>D</mi></math></span>, in soda-lime silicate glass for the temperature of 520°C: <span><math><mrow><mi>D</mi><mo>=</mo><mn>2.5</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>11</mn></mrow></msup></mrow></math></span> cm²/s.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123718"},"PeriodicalIF":3.5,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-broadband near-infrared emission of AlNbO4:Cr3+ transparent glass-ceramics","authors":"Jinliang Huang ,&nbsp;Wenfa Fang ,&nbsp;Libin Xia","doi":"10.1016/j.jnoncrysol.2025.123720","DOIUrl":"10.1016/j.jnoncrysol.2025.123720","url":null,"abstract":"<div><div>Broadband near-infrared (NIR) light has wide applications in the fields of deep-tissue imaging, photodynamic therapy and industrial inspection. NIR pc-LED is regarded as a promising solution for high-performance NIR light sources due to its spectral tunability and compact design. However, the low absorption and poor chemical stability caused by a high scattering of phosphors and organic encapsulation, limit the further applications. In this study, a novel pure Cr³⁺-doped AlNbO₄ transparent glass-ceramics (GCs) was prepared via a heat-treated (HT) technique. As the HT temperature increased from 820 °C to 900 °C, the crystallinity, crystal size and luminous intensity increase gradually, while the transmittance decrease in turn. Cr³⁺ preferentially substitutes for Al³⁺ sites and occupies octahedral coordination centers in AlNbO₄ phase. The GC exhibits a high transmittance over 60 % and a high absorptivity of 80.1 % at a HT temperature of 900 °C. An ultra-broadband NIR emission (650-1400 nm) was obtained with a peak wavelength of 870 nm and a full width at half maximum (FWHM) of 237 nm under excitation at 442 nm. The GCs show an intermediate crystal field environment (<em>Dq</em>/<em>B</em> ≈ 2.3), which indicates an intermediate electron-phonon coupling and leads to a broadband NIR light. The GCs show an external quantum efficiency (EQE) of 17.7 % and a thermal-quenching resistance of 55.7 % initial intensity at 348 K. The optimized NIR LED device fabricated with AlNbO₄:Cr³⁺ GC demonstrates a significant application potential in the fields of non-destructive security inspection and biomedical imaging.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123720"},"PeriodicalIF":3.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144770932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A holistic approach to Cr₂O₃-doped lithium lead borosilicate glasses: probing thermal stability, optical emissions, and gamma shielding","authors":"Joseph Sumalatha M ,&nbsp;Ravi Kumar Guntu ,&nbsp;K. Sivaram ,&nbsp;Poornima B Shetty","doi":"10.1016/j.jnoncrysol.2025.123717","DOIUrl":"10.1016/j.jnoncrysol.2025.123717","url":null,"abstract":"&lt;div&gt;&lt;div&gt;A series of chromium oxide (Cr₂O₃)-doped lithium lead borosilicate glasses with the nominal composition (20−&lt;em&gt;x&lt;/em&gt;)Li&lt;sub&gt;2&lt;/sub&gt;O+5PbO+15B&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;+60SiO&lt;sub&gt;2&lt;/sub&gt;+xCr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; ​ (where &lt;em&gt;x&lt;/em&gt; = 0.00–0.5 mol%) were successfully synthesized via the conventional melt-quench technique. The structural, morphological, thermal, optical, and radiation shielding characteristics of these glasses were investigated using various advanced characterization techniques. &lt;strong&gt;X-ray diffraction (XRD)&lt;/strong&gt; analysis confirmed the amorphous nature of all prepared samples, evidenced by the absence of sharp diffraction peaks. The broad humps observed in the XRD patterns were consistent with a disordered glass network, which remained intact upon Cr₂O₃ doping up to 0.50 mol%. &lt;strong&gt;Scanning electron microscopy (SEM)&lt;/strong&gt; images revealed a homogeneous and dense glassy microstructure, with minor surface irregularities that slightly increased with higher Cr₂O₃ content, suggesting local compositional variation or microphase separation. &lt;strong&gt;Energy-dispersive X-ray spectroscopy (EDS)&lt;/strong&gt; analysis validated the elemental composition and confirmed the successful incorporation of chromium into the glass matrix. &lt;strong&gt;Fourier-transform infrared spectroscopy (FTIR)&lt;/strong&gt; studies indicated the presence of Si–O–Si, B–O–B, and B–O–Si linkages, with additional bands attributed to non-bridging oxygen (NBOs) and Cr–O vibrations appearing in the 550–700 cm⁻¹ region for doped samples. The increase in Cr₂O₃ concentration led to a slight shift and broadening of these bands, implying structural modifications in the glass network, likely due to the conversion of BO₃ to BO₄ units and increased NBO content. &lt;strong&gt;Raman spectroscopy&lt;/strong&gt; further supported these findings by revealing a systematic evolution of vibrational modes associated with BO₃/BO₄ units and silicate groups. The progressive intensity changes in Cr-related modes suggest a shift in chromium coordination and interaction with the glass network. &lt;strong&gt;Differential thermal analysis (DTA)&lt;/strong&gt; showed a gradual increase in the glass transition temperature (Tg) with Cr₂O₃ addition, indicative of enhanced network rigidity. However, at higher doping levels (≥0.3 mol%), a slight reduction in thermal stability was observed, potentially due to the clustering of Cr ions or partial crystallization tendencies. &lt;strong&gt;Radiation shielding properties&lt;/strong&gt; were evaluated by calculating parameters such as linear attenuation coefficient (LAC), mass attenuation coefficient (MAC), and half-value layer (HVL). The results demonstrated an improvement in gamma-ray attenuation ability with increasing Cr₂O₃ concentration, primarily due to the higher atomic number and density of Cr ions, which enhance photon interaction probabilities. &lt;strong&gt;Electron paramagnetic resonance (EPR)&lt;/strong&gt; spectra confirmed the presence of Cr³⁺ ions in octahedral symmetry, with a p","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123717"},"PeriodicalIF":3.5,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144764044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of laser process method and HF-based chemical etchants for laser-induced deep etching of NXT glass","authors":"Seunghyun Bang ,&nbsp;Ghulam Asghar ,&nbsp;Juil Hwang ,&nbsp;Nhu Anh Nguyen ,&nbsp;Ki Sang Lee ,&nbsp;Woohyun Jung ,&nbsp;Konstantin Mishchik ,&nbsp;Hyungsik Kim ,&nbsp;Kwang-Geol Lee","doi":"10.1016/j.jnoncrysol.2025.123697","DOIUrl":"10.1016/j.jnoncrysol.2025.123697","url":null,"abstract":"<div><div>Corning Lotus NXT glass exhibits advanced optical properties and high thermal and dimensional stability, setting industry-leading standards in applications such as displays, medical devices, and sensors. Acid-based glass etching techniques have been widely used for decades to shape glasses suitable for target applications with acceptable surface properties. In this work, we optimized the effect of different hydrofluoric acid-based chemical solutions to etch NXT glass by the laser-induced deep etching (LIDE) technique with a focus on the etching speed, aspect ratio, and quality of the obtained surface. The results show that a volumetric ratio of 7:3 of HF to HNO₃ achieved a higher etching speed (<span><math><mrow><mo>∼</mo><mn>850</mn></mrow></math></span> <span><math><mi>μ</mi></math></span>m/h) and aspect ratio (<span><math><mo>∼</mo></math></span>19:1) under laser conditions of 1030 nm wavelength, 45 <span><math><mi>μ</mi></math></span>J pulse energy, <span><math><mrow><mn>2</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>4</mn></mrow></msup></mrow></math></span> shots, and a 40 kHz repetition rate, compared to other etching solutions in the LIDE process. The surface roughness of the etched samples treated with the three different acid solutions was analyzed using atomic force microscopy (AFM). The analysis revealed that all etched samples maintained surface roughness with RMS values below 1 nm. These results demonstrate the superior efficacy of this etching combination in achieving optimal etching speeds, aspect ratios, and ultra-smooth surface topography, making it suitable for display applications.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123697"},"PeriodicalIF":3.5,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144748981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of thermo-mechanical processing of metallic glasses","authors":"Adit Sharma ,&nbsp;Vladislav Yu. Zadorozhnyy ,&nbsp;Jiang Wenrui ,&nbsp;J.C. Qiao","doi":"10.1016/j.jnoncrysol.2025.123714","DOIUrl":"10.1016/j.jnoncrysol.2025.123714","url":null,"abstract":"<div><div>This review discusses the thermomechanical processing of metallic glasses and discusses recent advances in their fabrication, unique properties, and potential applications. Metallic glasses, which are obtained through the rapid cooling of alloys, exhibit exceptional strength and elasticity, making them highly promising for engineering applications. However, inherent brittleness poses some challenges. This review examines annealing techniques that enhance mechanical properties by relieving internal stresses and homogenizing shear bands. The impacts of techniques such as high-pressure torsion, laser processing, and additive manufacturing on structural and mechanical evolution are also discussed. The mechanisms driving the shear band behavior are examined, as well as their effects on thermal-mechanical properties, as well as the influence of alloy composition on glass-forming ability. Recommendations suggest combining advanced manufacturing techniques with hybrid strategies to improve these materials for use in aerospace, biomedical, and structural applications.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123714"},"PeriodicalIF":3.5,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of colored R2O-MgO-Al2O3-SiO2 glass-ceramics with nano-sized crystals using natural basalt as a multifunctional additive","authors":"Shisong Liu,&nbsp;Jichuan Huo","doi":"10.1016/j.jnoncrysol.2025.123715","DOIUrl":"10.1016/j.jnoncrysol.2025.123715","url":null,"abstract":"<div><div>This study utilizes basalt enriched with transition metal elements (Fe, Cu, Ti) as a hybrid colorant and nucleating agent for R₂O-MgO-Al₂O₃-SiO₂ glass-ceramics. By employing TiO₂ as a crystallization agent and regulating basalt doping levels (1–10 wt.%), dark-gray to black-gray glass-ceramics with smooth surfaces were prepared. Basalt content critically affects crystallization behavior, coloration mechanisms, and physicochemical properties. Differential scanning calorimetry and Fourier transform infrared spectroscopy analyses indicate basalt incorporation lowers the glass transition temperature, moderately weakens the glass network structure, reduces melt viscosity, and enhances ion migration. X-ray diffraction and scanning electron microscopy reveal that basalt content and heat-treatment temperature synergistically regulate microstructure: 1 wt.% doping refines crystallite size (average grain size: 25.52 nm), while 5 wt.% induces agglomeration (particle size d₉₀ = 291 nm). X-ray photoelectron spectroscopy identifies coloration mechanisms driven by transition metal valence transitions, where Fe²⁺/Fe³⁺ redox pairs dominate chromaticity, while Cu⁺/Cu²⁺ equilibrium and stable Ti⁴⁺(d⁰) states enhance color uniformity. Heat-treatment temperature modulates metal ion valence evolution. Increased basalt content and temperature elevate bulk density (2.692–2.713 g/cm³). Microhardness slightly decreases (7.6–8.6 GPa) due to heterogeneous interfaces and grain coarsening, yet higher crystallization temperatures mitigate losses via increased crystalline phase content. All samples exhibit exceptional corrosion resistance (mass loss &lt;0.08 %). The developed colored glass-ceramics integrate superior performance and aesthetic appeal, demonstrating promising applications in architectural curtain walls and corrosion-resistant coatings, while aligning with resource efficiency and environmental sustainability.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123715"},"PeriodicalIF":3.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of replacing Na+ with Ag+ on the optical and spectroscopic properties of Er3+-doped tellurite glasses","authors":"Iuliia Kraskowski,&nbsp;Khaldoon Nasser,&nbsp;Chloe Hannesse,&nbsp;Laeticia Petit","doi":"10.1016/j.jnoncrysol.2025.123708","DOIUrl":"10.1016/j.jnoncrysol.2025.123708","url":null,"abstract":"<div><div>Er³⁺ doped tellurite glasses have attracted significant interest due to their broad emission band at 1.5 µm, the telecommunication window. Among them, the glasses in the TeO₂-ZnO-Na₂O system are particularly suitable for waveguide fabrication using ion exchange. This study investigates the impact of substituting Na₂O with Ag₂O in the tellurite glass doped with Er³⁺ ions on its optical and spectroscopic properties, as well as its chemical durability when immersed in AgNO₃-KNO₃-NaNO₃ molten salt baths, usually used for Ag⁺-Na⁺ exchange. The replacement of Na₂O with Ag₂O leads to an increase in thermal stability and refractive index due to the depolymerization of the glass network. When immersed in Ag-containing salt baths, the glass surface reacts with the molten salt bath, the reaction of which depends on the glass and molten salt bath composition. Diffusion of Ag⁺ and preferential etching of TeO₂ can be obtained, as well as surface crystallization. The glass with the composition 80 TeO₂ – 10 ZnO – 10 Na₂O (in mol%) was found to be the most stable in the molten salt bath probably due to its polymerized network and so the most suitable glass for ion exchange processes and waveguide fabrication.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123708"},"PeriodicalIF":3.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical investigation of interaction between 3.8µm laser and fused silica based on the measurement of temperature dependent absorption coefficient","authors":"Guobin Zhang ,&nbsp;Yunxiang Pan ,&nbsp;Zhonghua Shen ,&nbsp;Hongchao Zhang ,&nbsp;Tu Xu ,&nbsp;Zewen Li ,&nbsp;Jian Lu ,&nbsp;Bayanheshig","doi":"10.1016/j.jnoncrysol.2025.123713","DOIUrl":"10.1016/j.jnoncrysol.2025.123713","url":null,"abstract":"<div><div>The absorption coefficient of fused silica in the mid-infrared (IR) range lies between those at near-IR and far-IR wavelengths. Consequently, mid-IR lasers offer both high energy coupling efficiency and deeper penetration depth, providing a significant advantage for laser repair of optical component damage. In this study, an experimental setup was established to measure the temperature dependent absorption coefficient of fused silica at a wavelength of 3.8 µm. The experimental results indicate that the absorption coefficient of fused silica at 3.8 µm increases linearly with temperature. When the temperature reaches 2000 K, the absorption coefficient increases to 1004 m^-1, approximately 1/200 of the absorption coefficient at 10.6 µm. Furthermore, based on the measured absorption coefficient, a simulation model for the interaction of 3.8 µm laser with fused silica was established. The simulated ablation morphology is in good agreement with reported experimental results, and the variation in the reflected signal corresponds to the increase in material temperature to the softening point, as well as the retreat of the air-liquid interface.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123713"},"PeriodicalIF":3.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}