Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
Nanoscale. 2016 Dec 7;8(45):18855-18859. doi: 10.1039/c6nr07322k. Epub 2016 Nov 3.
Here we demonstrate the fabrication of two-dimensional plasmonic photonic crystal (PPC) nanostructures to modulate the nanocavity plasmon (NCP) mode in the scanning tunneling microscope (STM) junction. Theoretically optimized PPC structures with particular defect modes were fabricated and used as the substrates for STM induced luminescence (STML) research. Stable STM imaging and STML studies were achieved by covering a suspended graphene sheet on top of periodic PPC structures. Our preliminary STML results suggest that the NCP emission can be selectively enhanced by the defect mode of the PPC structures, which paves the way for future studies on the engineering of electrically driven single-molecule photon sources and plasmonic lasing through tuning NCP modes.
在这里，我们展示了二维等离子体光子晶体（PPC）纳米结构的制造，以调制扫描隧道显微镜（STM）结中的纳米腔等离子体（NCP）模式。我们制造了具有特定缺陷模式的理论优化 PPC 结构，并将其用作 STM 诱导发光（STML）研究的衬底。通过在周期性 PPC 结构上覆盖悬浮石墨烯片，实现了稳定的 STM 成像和 STML 研究。我们的初步 STML 结果表明，NCP 发射可以通过 PPC 结构的缺陷模式选择性增强，这为通过调谐 NCP 模式来实现电驱动单分子光子源和等离子体激光的工程研究铺平了道路。
