Materials & Design最新文献_第4页

Data-driven prediction and inverse design of optical asymmetry in gold nanorod-helical assemblies 金纳米棒-螺旋组件光学不对称的数据驱动预测与反设计

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-17 DOI: 10.1016/j.matdes.2025.114788

Yang Liu , Yongguang Chen , Bo Yang , Lina Zhao

{"title":"Data-driven prediction and inverse design of optical asymmetry in gold nanorod-helical assemblies","authors":"Yang Liu , Yongguang Chen , Bo Yang , Lina Zhao","doi":"10.1016/j.matdes.2025.114788","DOIUrl":"10.1016/j.matdes.2025.114788","url":null,"abstract":"<div><div>The study of optical asymmetry in gold nanorod- (Au NR-) helical assemblies is of paramount importance for the development of functional nanomaterials in optoelectronics, catalysis, and biomedicine. However, such assemblies frequently proceed without adequate theoretical guidance on structure–property relationships, hindering precise control and rational design of tailored optical activity. The present study explores automated, data-driven workflows to investigate geometry-dependent optical asymmetry, with the aim of predicting the asymmetry factor (g-factor) of Au NR-helical assemblies and retrieving their geometric features. A forward artificial neural network (ANN) has been developed to predict the g-factor from geometric inputs. Conversely, a combination of ANN with particle swarm optimisation (PSO) has been demonstrated to retrieve geometric parameters necessary to achieve a target g-factor. The findings demonstrate that the forward ANN attains a high level of prediction accuracy (<span><math><mrow><mi>r</mi><mo>=</mo></mrow></math></span> 0.9833), and the inverse ANN-PSO workflow effectively identifies geometries that yield g-factors with a high degree of proximity to the target values. This demonstrates the significant value of these automated workflows for the fundamental geometric design and optical asymmetry prediction of Au NR-helical assemblies.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114788"},"PeriodicalIF":7.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119507","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}

引用次数: 0

A novel in-situ gas-phase alloying approach in wire arc additive manufacturing for controlling solidification mode and designing hybrid stainless steels 电弧增材制造中原位气相合金化控制凝固模式和设计混杂不锈钢的新方法

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114781

Elina Akbarzadeh Chiniforoush , Mohammad Reza Jandaghi , Johan Moverare , Tohid Saeid , Koray Yurtışık

{"title":"A novel in-situ gas-phase alloying approach in wire arc additive manufacturing for controlling solidification mode and designing hybrid stainless steels","authors":"Elina Akbarzadeh Chiniforoush , Mohammad Reza Jandaghi , Johan Moverare , Tohid Saeid , Koray Yurtışık","doi":"10.1016/j.matdes.2025.114781","DOIUrl":"10.1016/j.matdes.2025.114781","url":null,"abstract":"<div><div>This study presents a thermodynamically guided in-situ gas-phase alloying approach in wire arc additive manufacturing (WAAM) to enhance duplex stainless steels by shifting the primary solidification mode from δ-ferrite to γ-austenite, producing a nitrogen-enriched alloy with a continuous austenitic matrix that combines duplex-grade strength with superior ductility. Thermodynamic calculations guided nitrogen adjustment in the shielding gas to control solidification and develop high-performance microstructures. Thermodynamic–kinetic modeling predicted nitrogen uptake from the arc plasma, enabling gas composition selection to promote a shift from δ-ferrite to γ-austenite as the primary solidification phase. Nitrogen content analysis and Scheil simulations confirmed a transition to austenite-first solidification at approximately 0.7 wt% nitrogen. Electron Backscatter Diffraction and optical microscopy revealed that nitrogen-enriched (HN) samples exhibited a continuous γ-austenitic matrix with finely dispersed δ-ferrite, whereas nitrogen-lean (LN) samples had a δ-ferritic matrix with isolated γ-austenite islands. HN samples showed greater grain orientation spread, indicating increased internal misorientation. Despite pronounced crystallographic texture, the HN samples demonstrated nearly isotropic tensile behavior along with enhanced yield strength, tensile strength, ∼11 % higher hardness, and improved elongation. These findings demonstrate that melt chemistry control via gas-phase alloying enables phase-engineered microstructures with superior mechanical performance without modifying the filler wire.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114781"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107775","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}

引用次数: 0

High-temperature viscoelastic mechanism for SiC fibers to elucidate creep and recovery behaviors 碳化硅纤维的高温粘弹性机理，以阐明其蠕变和恢复行为

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114755

Wenguo Jiang , Yi Ru , Jundong Shi , Haozhang Hou , Zexu Sun , Weiwei Qu , Xiaotian Hu , Guoquan Ma , Lianyi Wang , Yanling Pei , Shusuo Li , Shengkai Gong

{"title":"High-temperature viscoelastic mechanism for SiC fibers to elucidate creep and recovery behaviors","authors":"Wenguo Jiang , Yi Ru , Jundong Shi , Haozhang Hou , Zexu Sun , Weiwei Qu , Xiaotian Hu , Guoquan Ma , Lianyi Wang , Yanling Pei , Shusuo Li , Shengkai Gong","doi":"10.1016/j.matdes.2025.114755","DOIUrl":"10.1016/j.matdes.2025.114755","url":null,"abstract":"<div><div>Mastering the high-temperature creep behavior of SiC fibers plays pivotal role in designing reinforced ceramic matrix composites. Creep viscoelastic behavior is activated at higher temperatures due to complicated interactive coordination between grain interiors and grain boundaries. This study investigated the tensile creep behaviors at different generations of SiC fibers under conditions of various stress and temperatures. The creep recovery behaviors after unloading exhibits the viscoelastic nature, which comes from the possible motion of amorphous phase near massive grain boundaries. It is driven by the release of elastic energy of the grain boundary, evidenced by frequency shifts in Raman spectroscopy. Then classical diffusion creep theory is modified to a viscoelastic model incorporating physical parameters such as the elasticity, viscosity, and threshold stress for SiC fibers. The proposed equations have been well supported by creep test results. The viscosity and elasticity parameters decrease with increasing temperature, the latter being more sensitive. 3rd generation fiber exhibits higher viscosity and elasticity, explaining better creep resistance. The model can evaluate the elastic and plastic contributions and predict creep results at higher temperatures. This work helps to understand high-temperature SiC fiber creep, and to guide optimizing fiber-reinforced composites.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114755"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108186","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}

引用次数: 0

Nutrient-enriched soil inks for 3D-printed mycelium-based living building materials 营养丰富的土壤油墨用于3d打印菌丝体为基础的生活建筑材料

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114770

Ehsan Baharlou

{"title":"Nutrient-enriched soil inks for 3D-printed mycelium-based living building materials","authors":"Ehsan Baharlou","doi":"10.1016/j.matdes.2025.114770","DOIUrl":"10.1016/j.matdes.2025.114770","url":null,"abstract":"<div><div>This study develops nutrient-enriched soil composite inks for 3D printing, followed by mycelium colonization to create large-scale, mycelium-based living building materials (LBMs). The research focuses on enhancing the properties of 3D-printed soil composites by utilizing mycelial hyphal networks to create sustainable construction solutions. A primary challenge lies in calibrating the nutrient levels to support mycelium growth while ensuring the admixture remains printable and suitable for sustaining mycelial development. The study assesses the effects of malt extract agar (MEA) as an additive in soil composites, examining its impact on mycelium growth, water-related properties, and self-regenerative capabilities.</div><div>Findings indicate that soil composites containing 10 wt% MEA supports balanced mycelium growth across aerial, surface, and penetrative levels. Mycelial networks within the soil composite ink improve water-related properties, enhance structural integrity, and reduce shrinkage compared to composites without mycelium. Furthermore, the mycelium-soil composite demonstrates self-regenerative capabilities by bridging gaps created within the samples. This research contributes to the advancement of LBMs for sustainable earth-based construction, utilizing the inert properties of mycelium to enhance soil characteristics for 3D printing.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114770"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156231","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}

引用次数: 0

Wire-Arc directed energy deposition of metastable-β alloy Ti-15 V-3Cr-3Sn-3Al using thick wire feedstock: Microstructure and mechanical response 采用粗丝料制备亚稳-β合金ti - 15v - 3cr - 3sn - 3al的丝弧定向能沉积：组织与力学响应

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114757

José L. Neves , Tomasz Wojcik , David Obersteiner , Johann Grillitsch , David Holec , Daniel Kiener , Thomas Klein

{"title":"Wire-Arc directed energy deposition of metastable-β alloy Ti-15 V-3Cr-3Sn-3Al using thick wire feedstock: Microstructure and mechanical response","authors":"José L. Neves , Tomasz Wojcik , David Obersteiner , Johann Grillitsch , David Holec , Daniel Kiener , Thomas Klein","doi":"10.1016/j.matdes.2025.114757","DOIUrl":"10.1016/j.matdes.2025.114757","url":null,"abstract":"<div><div>Ti-15V-3Cr-3Sn-3Al is a metastable-β alloy initially developed to improve cold formability and reduce downstream processing costs compared to hot-forming Ti-6Al-4V. It is primarily used in sheet and welded forms, with secondary applications in castings and forgings. However, high formulation costs and strict process windows reduce expected cost benefits. This study explores an alternative manufacturing route for large-scale components using the available thick wire format (Ø3.0 mm). Ti-15V-3Cr-3Sn-3Al was deposited via plasma-based wire-arc directed energy deposition. Samples were evaluated in two conditions: (1) solution-treated (2) solution-treated and aged. Mechanical testing included tensile and hardness measurements, while microstructural analysis used a broad range of techniques. Deformation behaviour and fracture surfaces were also examined. The β-phase microstructure in the as-built condition contained α<sub>GB</sub> at grain boundaries, which dissolved during solution treatment, leaving a fully β-phase matrix. Aging resulted in the precipitation of fine α-laths, providing expected strengthening. In this condition, the material achieved an ultimate tensile strength > 1150 MPa and failure strain > 6 %, with anisotropy observed only in ductility. In the solution-treated condition, continuous softening was observed during tensile testing. This study provides insight into properties of Ti-15V-3Cr-3Sn-3Al in additive manufacturing, laying the groundwork for alternative processing routes for titanium alloys.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114757"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119489","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}

引用次数: 0

Advances and challenges of targeted protein degradation in ophthalmology: Future directions and therapeutic potential 眼科学中靶向蛋白降解的进展和挑战：未来方向和治疗潜力

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114767

Ke Feng , Mingyan Wei , Panqin Ma , Jiaoyue Hu , Caihong Huang , Yi Han , Zuguo Liu

{"title":"Advances and challenges of targeted protein degradation in ophthalmology: Future directions and therapeutic potential","authors":"Ke Feng , Mingyan Wei , Panqin Ma , Jiaoyue Hu , Caihong Huang , Yi Han , Zuguo Liu","doi":"10.1016/j.matdes.2025.114767","DOIUrl":"10.1016/j.matdes.2025.114767","url":null,"abstract":"<div><div>The advent of targeted protein degradation technologies, particularly proteolysis-targeting chimeras (PROTACs) and lysosome-targeting chimeras (LYTACs), is poised to revolutionize therapeutic strategies in ophthalmology. This review presents the first systematic analysis of these protein degradation platforms to address ’undruggable’ targets in ocular pathologies. Harnessing distinct cellular machinery through the engagement of the ubiquitin–proteasome system and the lysosomal pathway with PROTACs and LYTACs, respectively, these heterobifunctional molecules enable the targeted elimination of disease-driving proteins implicated in ocular surface diseases, such as dry eye, and fundus diseases, including age-related macular degeneration, diabetic retinopathy, and glaucoma. We review the mechanistic basis of these technologies, their translational potential in overcoming the limitations of conventional therapies, and ocular-specific challenges such as optimizing bioavailability and intraocular target selectivity. Central to this discussion is the role of advanced linker engineering in achieving spatio-temporal control of degradation activity. While barriers to ocular biodistribution and sustained delivery remain, targeted protein degradation represents a paradigm shift in ophthalmology, offering durable therapeutic effects that could significantly improve clinical outcomes and patient compliance through reduced dosing frequency.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114767"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108185","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}

引用次数: 0

Direct joining of sapphire and Invar alloy by nanosecond laser 蓝宝石与英瓦尔合金的纳秒激光直接连接

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114753

Rui Pan , Yinghao Feng , Pei Chen , Lizhong Wang , Shujun Chen

{"title":"Direct joining of sapphire and Invar alloy by nanosecond laser","authors":"Rui Pan , Yinghao Feng , Pei Chen , Lizhong Wang , Shujun Chen","doi":"10.1016/j.matdes.2025.114753","DOIUrl":"10.1016/j.matdes.2025.114753","url":null,"abstract":"<div><div>The direct joining of single-crystal sapphire and Invar alloy using a nanosecond laser is demonstrated for the first time in this study. The macro- and microstructures of the sapphire/Invar alloy joints were analyzed, along with an investigation of their compositional characteristics. Based on this, the effects of nanosecond laser processing parameters on the joint’s macro- and microstructures and its mechanical performance were explored. The typical fracture morphologies of the sapphire/Invar alloy joints were examined, revealing the fracture mechanisms involved. The laser-irradiated area exhibited a conical molten zone, predominantly composed of sapphire with a small amount of Invar alloy particles. No new phases were detected in the joint region, and the primary joining mechanism was identified as mechanical interlocking and embedding. After optimizing the nanosecond laser welding parameters, the joint’s shear strength reached 123.2 MPa. Additionally, the sealed sapphire/Invar alloy samples welded by nanosecond laser passed a 336-hour water resistance test without any leakage. The mechanical interlocking effect generated by the conical weld seam structure in the laser-irradiated area played a key role in enhancing shear strength.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114753"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119513","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}

引用次数: 0

Effect of electroplating current density and post-annealing on the warpage and reliability of redistribution layer for advanced semiconductor package 电镀电流密度和后退火对先进半导体封装重分布层翘曲度和可靠性的影响

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114732

Taek-Hyeon Kim , Jeong-Hyeon Baek , Sang-Il Kim , Tae-Hoon Kim , Ji-Hye Shim , Hak-Sung Kim

{"title":"Effect of electroplating current density and post-annealing on the warpage and reliability of redistribution layer for advanced semiconductor package","authors":"Taek-Hyeon Kim , Jeong-Hyeon Baek , Sang-Il Kim , Tae-Hoon Kim , Ji-Hye Shim , Hak-Sung Kim","doi":"10.1016/j.matdes.2025.114732","DOIUrl":"10.1016/j.matdes.2025.114732","url":null,"abstract":"<div><div>In this study, the warpage and thermal fatigue reliability of the redistribution layer (RDL) were improved by optimizing the electroplating current density and post-annealing process to control residual stress. The residual stress of the electroplated copper layer and the cure shrinkage of the photo-imageable dielectric (PID) were evaluated using bi-layer beam specimens designed based on Timoshenko beam theory. To analyze the mechanism of residual stress generation in the copper layer, the grain size was quantified using X-ray diffraction (XRD) and the coefficient of thermal expansion (CTE) was measured using a thermomechanical analyzer (TMA). Warpage and thermal fatigue reliability were evaluated under varying electroplating current densities and post-annealing conditions. These experimental results were validated by comparing them with stress analysis data obtained through finite element analysis (FEA). In the RDL structure, the optimized current density condition effectively reduced the residual tensile stress in the electroplated copper layer and improved both warpage and thermal fatigue life. In addition, the post-annealing relieved cure shrinkage-induced stress in the PID, enhancing the reliability of the RDL structure. The results of this study are expected to contribute to improved yield and thermomechanical reliability in advanced semiconductor packages.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114732"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156254","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}

引用次数: 0

Influencing the draping behaviour of solid epoxy prepregs by applying 3D-printed resin patterns 通过应用3d打印树脂图案影响固体环氧预浸料的悬垂行为

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114780

Jan Philipp Janzen , Hendrik Schäfer , Murat Çelik , Colin Robert , Conchúr M. Ó Brádaigh , David May , Thomas Neumeyer

{"title":"Influencing the draping behaviour of solid epoxy prepregs by applying 3D-printed resin patterns","authors":"Jan Philipp Janzen , Hendrik Schäfer , Murat Çelik , Colin Robert , Conchúr M. Ó Brádaigh , David May , Thomas Neumeyer","doi":"10.1016/j.matdes.2025.114780","DOIUrl":"10.1016/j.matdes.2025.114780","url":null,"abstract":"<div><div>This study presents a novel strategy to overcome the limitations of solid resin prepregs (SRPs) − namely the inability to drape at room temperature and hindered gas evacuation during vacuum-bag-only (VBO) processing − by 3D-printing a regular, uncured solid epoxy resin (SR) pattern on a dry woven textile. The locally patterned resin distribution preserves dry textile regions, enabling room temperature drapeability and more robust VBO-processing due to improved gas evacuation. By adjusting pattern parameters such as element geometry and coverage, the draping behaviour can be controlled to adapt to a desired draping condition. In order to be able to design the right pattern for given draping conditions, the influence of these parameters on bending and shearing was studied. Manual draping showed that bending radii down to 4 mm were achievable, governed only by the element length in bending direction, while coverage had no significant effect. In contrast, picture-frame-tests showed that the shearing is mainly influenced by the coverage and that a maximal shearing angle of 30° can be achieved. These results show that the SRPs bending and shearing can be independently influenced through pattern design. The derived structure–drapeability relationships enable targeted design of SRPs for robust, autoclave-free composite manufacturing.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114780"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107787","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}

引用次数: 0

Microcellular TLCP/SiO2 for high-frequency communication design 用于高频通信设计的微蜂窝TLCP/SiO2

IF 7.9 2区材料科学

Materials & Design Pub Date : 2025-09-16 DOI: 10.1016/j.matdes.2025.114772

Jiayang Sun , Wenyu Zhong , Yichong Chen , Kuikui Fan , Dongdong Hu , Zhenhao Xi , Tao Gu , Ling Zhao

{"title":"Microcellular TLCP/SiO2 for high-frequency communication design","authors":"Jiayang Sun , Wenyu Zhong , Yichong Chen , Kuikui Fan , Dongdong Hu , Zhenhao Xi , Tao Gu , Ling Zhao","doi":"10.1016/j.matdes.2025.114772","DOIUrl":"10.1016/j.matdes.2025.114772","url":null,"abstract":"<div><div>With the development of high-frequency and high-speed communication technologies, especially in microwave/millimeter-wave applications, electronic devices face increased performance demands. Developing low dielectric materials with exceptional properties for these devices has become a significant challenge. Thermotropic liquid crystal polymers (TLCP) are promising due to their excellent high-frequency performance, while microcellular foaming technology is commonly used to enhance dielectric properties. In this study, TLCP was modified with ADR and nano-SiO<sub>2</sub>. The synergistic modification introduces long-chain branched structures and nucleation sites, improving matrix performance and optimizing foaming behavior. In addition, long-chain branched TLCP/SiO<sub>2</sub> foam has highly compressive properties, excellent dimensional stability, ultra-low dielectric stability at high frequencies, great flame retardant and wonderful high-temperature infrared thermal stealth performance. It is also found by simulation that the patch antenna with long-chain branched TLCP/SiO<sub>2</sub> foam substrate has excellent signal transmission performance. The transmission distance up to 4793 m, which is 5.8 times higher than pure TLCP before foaming, which presents a novel solution for high-frequency and high-speed communication. Furthermore, the long-chain branched TLCP/SiO<sub>2</sub> foams with significant performance is expected to be used in sophisticated technology fields such as wide-ranging applications in military, extreme conditions, aviation, microelectronic and other fields.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"259 ","pages":"Article 114772"},"PeriodicalIF":7.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107790","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}

引用次数: 0