| Title | Single-Nanoparticle Plasmonic Electro-optic Modulator Based on MoS2 Monolayers |
| Authors | Li, Bowen Zu, Shuai Zhou, Jiadong Jiang, Qiao Du, Bowen Shan, Hangyong Luo, Yang Liu, Zheng Zhu, Xing Fang, Zheyu |
| Affiliation | Peking Univ, Collaborat Innovat Ctr Quantum Matter, Acad Adv Interdisciplinary Studies, Sch Phys,State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Programmable Mat, Singapore 639798, Singapore. |
| Keywords | MoS2 exciton-plasmon interaction electro-optic modulator Fano resonance trions LAYER MOS2 MOLYBDENUM-DISULFIDE VALLEY POLARIZATION EXCITON INTERACTION FANO RESONANCE NANOSTRUCTURES TRANSITION METAMATERIALS PHOTOCURRENT TRANSISTORS |
| Issue Date | 2017 |
| Publisher | ACS NANO |
| Citation | ACS NANO. 2017, 11(10), 9720-9727. |
| Abstract | The manipulation of light in an integrated circuit is crucial for the development of high-speed electro-optic devices. Recently, molybdenum disulfide (MoS2) monolayers generated broad interest for the optoelectronics because of their huge exciton binding energy, tunable optical emission, direct electronic band-gap structure, etc. Miniaturization and multifunctionality of electro-optic devices further require the manipulation of lightmatter interaction at the single-nanoparticle level. The strong excitonplasmon interaction that is generated between the MoS2 monolayers and metallic nanostructures may be a possible solution for compact electro-optic devices at the nanoscale. Here, we demonstrate a nanoplasmonic modulator in the visible spectral region by combining the MoS2 monolayers with a single Au nanodisk. The narrow MoS2 excitons coupled with broad Au plasmons result in a deep Fano resonance, which can be switched on and off by applying different gate voltages on the MoS2 monolayers. A reversible display device that is based on this single-nanoparticle modulator is demonstrated with a heptamer pattern that is actively controlled by the external gates. Our work provides a potential application for electro-optic modulation on the nanoscale and promotes the development of gate-tunable nanoplasmonic devices in the future. |
| URI | http://hdl.handle.net/20.500.11897/497873 |
| ISSN | 1936-0851 |
| DOI | 10.1021/acsnano.7b05479 |
| Indexed | SCI(E) EI PubMed Medline |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
