Authors
Yiming Liu, Fan Wu, Jin Dai, Siyu Qiang, Chunhong Zhu, Ick Soo Kim, Jianyong Yu, Yi-Tao Liu, Bin Ding
Published in
Advanced materials (Deerfield Beach, Fla.). Pages e73949. Jul 07, 2026. Epub Jul 07, 2026.
Abstract
Nitride ceramics with high thermal conductivity can effectively dissipate localized heat and prevent hotspot formation in advanced electronics. However, their intrinsic brittleness and limited deformability render them susceptible to structural damage under multiaxial mechanical loading, disrupting the continuity of heat transfer pathways and compromising long-term device reliability. Here, a multiscale structural optimization strategy based on organic-inorganic hybrid chains is proposed to produce high-strength, flexible, yet highly thermally conductive nitride ceramic nanofibers. This achievement arises from an optimized grain structure with high crystallinity at the microscopic scale, coupled with a continuous, defect-minimized fibrous architecture at the mesoscale, collectively striking an optimal balance between stress transfer and phonon scattering to achieve rapid stress dissipation and efficient heat transport. Building on this feature, the nitride ceramic nanofibers exhibit excellent flexibility and a mechanical strength of up to 528.3 MPa despite possessing high crystallinity, a characteristic that typically leads to brittleness. Meanwhile, large-area, free-standing aligned fiber membranes fabricated via electrospinning achieve a high thermal conductivity of 16.58 W m- 1 K- 1 and structural stability during bending. This work offers new opportunities for high-performance fibrous materials in next-generation electronic systems.
PMID:
42411185
Bibliographic data and abstract were imported from PubMed on 07 Jul 2026.
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