The thermal conductivity of micro-sized boron nitride spheres (BNSs), which is challenging to measure directly, was approximated to be that of the BNS pellet in the cross-plane direction, measured by laser flash method. BNSs exhibit a high, isotropic thermal conductivity of 37.2±2.5 W m⁻¹ K⁻¹ and outperform h-BN pellets in heat dissipation for LED lights due to the isotropic structures.

中文翻译：

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释放氮化硼球在高性能热管理方面的潜力

微米级氮化硼球（BNS）的热导率难以直接测量，通过激光闪光法测量，其横截面方向的热导率近似为 BNS 颗粒的热导率。^{BNS 表现出 37.2±2.5 W m -1}  K ^-1的高各向同性热导率，并且由于各向同性结构，在 LED 灯散热方面优于h -BN 颗粒。