Otsuka Keigo, Fang Nan, Yamashita Daiki, Taniguchi Takashi, Watanabe Kenji, Kato Yuichiro K
Nanoscale Quantum Photonics Laboratory, RIKEN Cluster for Pioneering Research, Saitama, Japan.
Department of Mechanical Engineering, The University of Tokyo, Tokyo, Japan.
Nat Commun. 2021 May 25;12(1):3138. doi: 10.1038/s41467-021-23413-4.
When continued device scaling reaches the ultimate limit imposed by atoms, technology based on atomically precise structures is expected to emerge. Device fabrication will then require building blocks with identified atomic arrangements and assembly of the components without contamination. Here we report on a versatile dry transfer technique for deterministic placement of optical-quality carbon nanotubes. Single-crystalline anthracene is used as a medium which readily sublimes by mild heating, leaving behind clean nanotubes and thus enabling bright photoluminescence. We are able to position nanotubes of a desired chirality with a sub-micron accuracy under in-situ optical monitoring, thereby demonstrating deterministic coupling of a nanotube to a photonic crystal nanobeam cavity. A cross junction structure is also designed and constructed by repeating the nanotube transfer, where intertube exciton transfer is observed. Our results represent an important step towards development of devices consisting of atomically precise components and interfaces.
当持续的器件尺寸缩小达到原子所施加的最终极限时，基于原子精确结构的技术有望应运而生。届时，器件制造将需要具有确定原子排列的构建模块以及无污染的组件组装。在此，我们报告一种用于确定性放置光学质量碳纳米管的通用干法转移技术。单晶蒽用作介质，通过温和加热容易升华，留下干净的纳米管，从而实现明亮的光致发光。我们能够在原位光学监测下以亚微米精度定位所需手性的纳米管，从而证明纳米管与光子晶体纳米束腔的确定性耦合。通过重复纳米管转移还设计并构建了一种交叉结结构，在其中观察到了管间激子转移。我们的结果代表了朝着由原子精确组件和界面组成的器件发展迈出的重要一步。
