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AI-Driven Acoustic Metamaterials for Pixel-Accurate Sound Insulation Control 认领 引用
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作者 Kaijing Liu Yihuan Zhu +3 位作者 Jiachen Meng Ruizhi Dong Xu Wang Yong Li 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期349-355,共7页
Acoustic metamaterials have emerged as a promising platform for efficient and flexible low-frequency sound insulation,overcoming the limitations imposed by the mass law governing conventional materials.While metamater... Acoustic metamaterials have emerged as a promising platform for efficient and flexible low-frequency sound insulation,overcoming the limitations imposed by the mass law governing conventional materials.While metamaterials achieve low-frequency sound insulation via local anti-resonances from membranes or plates of their meta-units,their broadband performance is inherently constrained by the narrow-band nature of resonances.Although tailoring the distribution of attached masses offers a pathway to modulate these modes'spectral features,the complexity of such configurations renders analytical solutions intractable.Here,we propose a deep learning framework that bridges this gap by encoding intricate mass distributions as pixelated images(mass-loaded and mass-free regions)and establishing a direct mapping between these images and the resulting transmission loss(TL)spectra.This approach facilitates inverse design of broadband sound-insulating metamaterials for a target TL spectrum and enables rapid performance prediction for arbitrary mass configurations.By synergizing artificial intelligence with the complicated mode engineering of acoustic metamaterials,our work establishes a data-driven paradigm for advanced wave manipulation,opening avenues for next-generation noise control technologies. 展开更多
关键词 pixel accurate control modulate thes transmission loss tailoring distribution attached masses inverse design broadband performance acoustic metamaterials broadband sound insulation
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From molecular precursors to ultra-high temperature ceramics:A novel synthesis of hafnium carbonitride nanoceramics 认领 引用 被引量：2
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作者 Xue Li Yulei Zhang +2 位作者 Yanqin Fu Junhao Zhao Jiachen Meng 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第20期11-21,共11页
Hafnium carbonitride(HfCxN1-x)ceramics have drawn considerable interest due to their exceptional me-chanical and thermophysical properties.Herein,we report a novel single-source precursor with Hf-N bonds as the ... Hafnium carbonitride(HfCxN1-x)ceramics have drawn considerable interest due to their exceptional me-chanical and thermophysical properties.Herein,we report a novel single-source precursor with Hf-N bonds as the main chain and fabricate HfCxN1-xceramics after pyrolysis of the precursor.The synthesis,ceramic conversion,and microstructural evolution of the single-source precursor as well as the derived HfCxN1-xceramics treated under various atmospheres were investigated.The results indicate that in an argon atmosphere,the nitrogen content within HfCxN1-xdecreases with rising temperature.While under a nitrogen atmosphere,the high concentration of N2facilitates the rapid conversion of HfO2 to Hf7O8N4,which subsequently promotes the transformation of the HfCxN1-xsolid solution ceramics.During this process,there is also an inhibitory effect of N2on the tendency of HfN into HfC.Moreover,the desired chemical composition of HfCxN1-xcan be regulated by adjusting the N2concentration in the heat treat-ment atmosphere.The present work proposes a novel strategy for the single-source precursor-derived carbonitride ceramics and provides a deep understanding of the preparation and property modulation of HfCxN1-xceramics. 展开更多
关键词 Hafnium Carbonitride Polymer-Derived Ceramics High-Temperature Pyrolysis Nitrogen Atmosphere Carbon/Nitrogen Thermal Reduction
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(Hf0.5Ta0.5)C ultra-high temperature ceramic solid solution nanowires 认领 引用 被引量：3
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作者 Hui Chen Yulei Zhang +4 位作者 Yanqin Fu Jiachen Meng Qing Miao Jianhua Zhang Hejun Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第16期91-101,共11页
Ultra-high temperature ceramic(UHTC)nanowires are potential reinforcement materials due to it combines the perfect properties of bulk materials and unique geometric properties of one-dimensional(1D)nanostructures.Thus... Ultra-high temperature ceramic(UHTC)nanowires are potential reinforcement materials due to it combines the perfect properties of bulk materials and unique geometric properties of one-dimensional(1D)nanostructures.Thus,developing 1D nanomaterials that have excellent morphology and structure retention in ultra-high temperature environments is of prime importance to bring their outstanding performance into full play.Herein,we report the novel solid solution((Hf0.5Ta0.5)C)ceramic nanowires,which could not only maintain morphological and structural stability at 1900°C but also exhibit 1D nanostructures under oxyacetylene scouring and ablation at 2300°C.The morphology evolution of nanowires obeys the Rayleigh instability mechanism,and the internal structure and element distribution of nanowires remain unchanged even if the surface atoms are rearranged.The fascinating nanowires are demonstrated to have great potential as ideal reinforcement materials of composite materials and toughening phases of ceramics that are applied in ultra-high temperature environments,as well as excellent performance enhancement phases of functional materials.Our work may provide new insights into the development of ceramic nanowires and widen their applications. 展开更多
关键词 (Hf0.5Ta0.5)C solid solution nanowires Vapor-liquid-solid mechanism Catalystanowire interface High-temperature stability Ablation resistance
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Single-source precursor derived high-entropy metal–carbide nanowires:Microstructure and growth evolution 认领 引用 被引量：6
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作者 Junhao Zhao Yulei Zhang +4 位作者 Hui Chen Yanqin Fu Qing Miao Jiachen Meng Jiachen Li 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2023年第11期2041-2052,共12页
In recent years,high-entropy metal carbides(HECs)have attracted significant attention due to their exceptional physical and chemical properties.The combination of excellent performance exhibited by bulk HEC ceramics a... In recent years,high-entropy metal carbides(HECs)have attracted significant attention due to their exceptional physical and chemical properties.The combination of excellent performance exhibited by bulk HEC ceramics and distinctive geometric characteristics has paved the way for the emergence of one-dimensional(1D)HECs as novel materials with unique development potential.Herein,we successfully fabricated novel(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C nanowires derived via Fe-assisted single-sourced precursor pyrolysis.Prior to the synthesis of the nanowires,the composition and microstructure of(Ti,Zr,Hf,Nb,Ta)-containing precursor(PHECs)were analyzed,and divinylbenzene(DVB)was used to accelerate the conversion process of the precursor and contribute to the formation of HECs,which also provided a partial carbon source for the nanowire growth.Additionally,multi-branched,single-branched,and single-branched bending nanowires were synthesized by adjusting the ratio of PHECs to DVB.The obtained single-branched(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C nanowires possessed smooth surfaces with an average diameter of 130–150 nm and a length of several tens of micrometers,which were a single-crystal structure and typically grew along the[11¯1]direction.Also,the growth of the(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C nanowires was in agreement with top-type vapor–liquid–solid mechanism.This work not only successfully achieved the fabrication of HEC nanowires by a catalyst-assisted polymer pyrolysis,but also provided a comprehensive analysis of the factors affecting their yield and morphology,highlighting the potential application of these attractive nano-materials. 展开更多
关键词 (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C nanowires high-entropy metal carbides(HECs) (Ti,Zr,Hf,Nb,Ta)-containing precursors vapor–liquid–solid(VLS)mechanism
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