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T o date, t he development al stages of substance civilization in human society have gone through the Stone Age, the Bro nze Age, the Iron Age, the Steel / Cement Age , and the Silicon Age based in the dividing standard ( typical materials ) proposed by one of the authors. Further, w e believe that human society has entered into the Nanomaterials Age. T he development al history of nanomaterial , t he evolution ary process of n anomaterials during the Silicon material age , and the reasons that the world has entered the N a nomateri a ls A ge are analyzed and discussed herein. In addition, we have identified the time when human society ent ered the Nanomaterials Age. Therefore, the theory of six era s of the development of human substance civilization has a complete exposition
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