Shimoi Norihiro
Department of Electrical and Electronic Engineering, Tohoku Institute of Technology, 35-1 Yagiyama, Kasumicho, Taihaku-ku, Sendai 982-8577, Japan.
ACS Omega. 2020 Dec 11;5(50):32334-32340. doi: 10.1021/acsomega.0c04214. eCollection 2020 Dec 22.
I developed a bottom-up process of crystal growth using a field emission (FE) electron beam without transfer of heat energy. In this study, highly crystalline single-walled carbon nanotubes were used as the FE electron source. Acetylene was irradiated with an electron beam of high-resolution energy emitted from the electron source. Then, zinc oxide (ZnO) was irradiated with the carbon-based ions dissociated from the acetylene and electron beam, which formed a nonequilibrium excitation reaction field. As a result, a crystalline carbon thin film with a spinel-like structure different from the structures of graphite and diamond was grown on the ZnO surface. It is considered that the carbon film can be formed on substrates with a periodic crystal structure, not only ZnO. I confirmed that a carbon film with a periodic crystal structure independent of the crystal structure of the underlying substrate was grown, which bridged with the substrate. Thus, I have established a technique of crystal bridging between a ceramic and carbon for the first time to the best of our knowledge.
我开发了一种自下而上的晶体生长过程，使用场发射（FE）电子束且不传递热能。在本研究中，高度结晶的单壁碳纳米管被用作场发射电子源。用从电子源发射的高分辨率能量的电子束照射乙炔。然后，用从乙炔和电子束中解离出的碳基离子照射氧化锌（ZnO），这形成了一个非平衡激发反应场。结果，在ZnO表面生长出了一种具有与石墨和金刚石结构不同的尖晶石状结构的结晶碳薄膜。据认为，不仅在ZnO上，在具有周期性晶体结构的衬底上也可以形成碳膜。我证实生长出了一种与下层衬底晶体结构无关的具有周期性晶体结构的碳膜，它与衬底相连。因此，据我们所知，我首次建立了一种陶瓷与碳之间的晶体桥接技术。
