Phase transition and restructuring of carbon nanoparticles induced by aerosol laser irradiation
Phase transition and restructuring of carbon nanoparticles induced by aerosol laser irradiation
复制标题
DOI：
10.1016/j.carbon.2013.12.111
复制
发表时间：
2014-04
期刊：
影响因子：
10.9
通讯作者：
T. Seto;Ayumi Inoue;H. Higashi;Y. Otani;M. Kohno;M. Hirasawa
中科院分区：
文献类型：
--
作者：
T. Seto;Ayumi Inoue;H. Higashi;Y. Otani;M. Kohno;M. Hirasawa
我们最近报道了激光照射气溶胶无定形碳纳米颗粒诱导洋葱状碳结构的形成。本研究采用离线和飞行测量相结合的方法，对气溶胶中碳纳米颗粒的激光诱导相变和重构进行了进一步的分析。使用由7-nm无定形初级纳米颗粒组成的激光合成的碳团聚体作为起始材料。多次激光照射的气体悬浮的碳团聚体导致形成各种独特的结构，如金刚石状，有缺陷的石墨，同心壳结构，以及它们的团聚体。碳纳米结构的演变被认为是负责在飞行中的质量迁移率谱。
We recently reported that laser irradiation of aerosol amorphous carbon nanoparticles induces formation of onion-like carbon structures. In this study, the further analyses of laser induced phase transitions and restructuring of aerosol carbon nanoparticles were carried out using the combination of off-line and in-flight measurement techniques. Laser-synthesized carbon agglomerates composed of 7-nm amorphous primary nanoparticles were used as starting materials. Irradiation of multiple laser shots to the gas-suspended carbon agglomerates resulted in the formation of variety of unique structures, such as diamond-like, defective graphite, concentric shell structures, and their agglomerates. Evolutions of the carbon nanostructures were found to be responsible for the in-flight mass-to-mobility spectra.