Mechanically Robust and Flexible Nitride Ceramic Nanofibers Enabling Advanced Thermal Management

Area of Science:

• Materials Science
• Nanotechnology
• Ceramic Engineering

Background:

• Nitride ceramics offer high thermal conductivity crucial for advanced electronics.
• Their inherent brittleness limits structural integrity and reliability under mechanical stress.
• Developing flexible, high-strength nitride ceramics is essential for next-generation electronics.

Purpose of the Study:

• To create high-strength, flexible, and thermally conductive nitride ceramic nanofibers.
• To address the limitations of traditional brittle ceramics in electronic applications.
• To optimize material structure at multiple scales for enhanced performance.

Main Methods:

• Multiscale structural optimization using organic-inorganic hybrid chains.
• Microscopic grain structure optimization for high crystallinity.
• Mesoscale fibrous architecture development via electrospinning.

Main Results:

• Achieved nitride ceramic nanofibers with high crystallinity and mechanical strength up to 528.3 MPa.
• Demonstrated excellent flexibility and structural stability during bending.
• Fabricated large-area, free-standing aligned fiber membranes with thermal conductivity of 16.58 W m⁻¹ K⁻¹.

Conclusions:

• The developed nitride ceramic nanofibers balance stress transfer and phonon scattering for efficient heat and stress dissipation.
• This breakthrough enables high-performance fibrous materials for demanding electronic systems.
• Offers a promising solution for enhanced reliability and thermal management in advanced electronics.