聚合钻石纳米棒

纯钻石的<111>晶面（垂直于立方体对角线的平面）用纳米钻石刻划测试时的硬度为167±6 GPa，而纳米钻石样品本身用纳米钻石刻划测试时硬度达到了310GPa。然而，这种测试只在刻划工具比测试样品更硬时才能得出正确结果。也就是说，纳米钻石的真实硬度可能略小于310 GPa。

聚合钻石纳米棒可由压缩富勒体（英语：fullerite，富勒烯的一种固态形式）粉末制得，与上文所述方法有些类似。一种方法使用了金刚石压腔，在不加热的情况下对其施加大约37GPa的压力。另一种方法是，将富勒体先用较小的压力（2–20GPa）压缩，然后加热到300–2500 K的温度。聚合钻石纳米棒的超高硬度可能在上世纪90年代就有研究者报道。这种材料是一系列相互连接的钻石纳米棒所构成，各纳米棒直径为5至20纳米，长度大约为1微米。

碳纳米管

富勒烯

钻石

二硼化铼

摩氏硬度

硬石

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1.The invention of aggregated diamond nanorods at Physorg.com^[1]

2.Diamonds are not forever at Physicsworld.org

3.Photos of Aggregated diamond nanorods