Reversible high-pressure carbon nanotube vessel
Ming D Ma, Jefferson Z Liu, Lifeng Wang, Luming Shen, Lin Xie, Fei Wei, Jing Zhu, Qianming Gong, Ji Liang, Quanshui Zheng
Physical Review B | AMER PHYSICAL SOC | Published : 2010
Applying a full pressure loop, i.e., loading and unloading, on a nanocrystal with in situ observation remains a challenge to experimentalists up until now. Using a multiwalled carbon nanotube, we realize the pressure loop acting on a Fe3 C nanocrystal (with peak value 20 GPa) by electron-beam irradiation with in situ observations inside transmission electron microscopy at 500°C/ambient temperature. Using density-functional theory calculations, we attribute the unloading process to the formation of one dangling-bond single vacancies under the electron-beam irradiation at room temperature. A theoretical model is presented to understand the process and the results agree well with the experiment..View full abstract
The authors thank Jiguang Sun and Tongda Ma (HVEM lab, General Research Institute for Nonferrous Metals, Beijing) for their support on electron irradiation in HVEM.