| Title | Nanoantenna-Sandwiched Graphene with Giant Spectral Tuning in the Visible-to-Near-Infrared Region |
| Authors | Shao, Lei Wang, Xiaomu Xu, Haitao Wang, Jianfang Xu, Jian-Bin Peng, Lian-Mao Lin, Hai-Qing |
| Affiliation | Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China. Chinese Univ Hong Kong, Dept Elect Engn & Mat Sci, Shatin, Hong Kong, Peoples R China. Chinese Univ Hong Kong, Technol Res Ctr, Shatin, Hong Kong, Peoples R China. Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China. Peking Univ, Dept Elect, Beijing 100871, Peoples R China. Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China. |
| Keywords | gold nanospheres graphene nanoantennas plasmon coupling plasmon resonance PLASMONIC ENHANCEMENT RAMAN-SCATTERING FANO RESONANCE PHOTODETECTOR NANOPARTICLES NANOSTRUCTURES SPECTROSCOPY TRANSISTOR SURFACE |
| Issue Date | 2014 |
| Publisher | advanced optical materials |
| Citation | ADVANCED OPTICAL MATERIALS.2014,2,(2),162-170. |
| Abstract | Graphene exhibits intriguing electronic and optical properties, making it promising for integrating electronics and optics. Effective light modulation can be achieved by combining graphene with plasmonic metal structures. However, to tune plasmonic response with graphene at visible-to-near-infrared frequencies has remained challenging owing to the weak coupling between plasmonic resonances and graphene optical transitions as well as inefficient gate control of the latter. Here the remarkable tuning of plasmonic scattering is reported by loading graphene into the cavities between Au nanocrystals and a Au film. The graphene-loaded nanoantennas show dramatic resonance red shifts, which can further be modified by varying graphene dielectric screening effect. Such nanoantennas can therefore not only strengthen light-graphene interactions drastically but also exemplify an electroplasmonic system naturally. This study will open up an avenue for effectively operating graphene photonic devices in the visible-to-near-infrared range and pave a way for electrically controlling light with plasmonic structures. |
| URI | http://hdl.handle.net/20.500.11897/216270 |
| ISSN | 2195-1071 |
| DOI | 10.1002/adom.201300313 |
| Indexed | SCI(E) |
| Appears in Collections: | 纳米器件物理与化学教育部重点实验室 信息科学技术学院 |
