Low Dielectric and High Thermal Conductive Phononic Crystal Nanofiber Metamaterial Film DOI

Xiaoyun Xie,

Jiawei Wu, Han Ma

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 23, 2025

Abstract The rapid advancement of 3D heterogeneous integration technology has created stringent requirements for the thermal conductivity low dielectric materials. However, common materials generally have conductivity, which hinders ability to simultaneously optimize signal transmission and heat dissipation in integrated systems. Here, a crystallization control strategy is proposed tackle challenge balancing high with constant. Through precise synthesis parameters, phononic crystal nanofiber (NF) metamaterial film composed boron nitride nanosheets (BNNS) crystalline polyimide (PI) bridges been successfully developed. PI bridging structure BNNS synergistically form crystal‐like inside fiber, enhancing lattice vibration facilitating transfer. Meanwhile, around fiber maintains long‐range disordered structure, hindering arrangement dipoles. synergistic effect enables NF achieve up 6.51 W/(m·k) relatively constant 2.63, thereby energy efficiency

Язык: Английский

Low Dielectric and High Thermal Conductive Phononic Crystal Nanofiber Metamaterial Film DOI

Xiaoyun Xie,

Jiawei Wu, Han Ma

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 23, 2025

Abstract The rapid advancement of 3D heterogeneous integration technology has created stringent requirements for the thermal conductivity low dielectric materials. However, common materials generally have conductivity, which hinders ability to simultaneously optimize signal transmission and heat dissipation in integrated systems. Here, a crystallization control strategy is proposed tackle challenge balancing high with constant. Through precise synthesis parameters, phononic crystal nanofiber (NF) metamaterial film composed boron nitride nanosheets (BNNS) crystalline polyimide (PI) bridges been successfully developed. PI bridging structure BNNS synergistically form crystal‐like inside fiber, enhancing lattice vibration facilitating transfer. Meanwhile, around fiber maintains long‐range disordered structure, hindering arrangement dipoles. synergistic effect enables NF achieve up 6.51 W/(m·k) relatively constant 2.63, thereby energy efficiency

Язык: Английский

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