Experimental demonstration of an electrically tunable broadband coherent perfect absorber based on a graphene–electrolyte–graphene sandwich structure
文献类型：期刊论文
| 作者 | Zhang, J.I.N.2; Wei, Xingzhan3 ; Premaratne, Malin1; W., Zhu
|
| 刊名 | Photonics Research
 |
| 出版日期 | 2019 |
| 卷号 | 7期号:8页码:868-874 |
| ISSN号 | 23279125 |
| DOI | 10.1364/PRJ.7.000868 |
| 英文摘要 | We propose and experimentally demonstrate the operation of an electrically tunable, broadband coherent perfect absorption (CPA) at microwave frequencies by harnessing the CPA features of a graphene–electrolyte–graphene sandwich structure (GSS). Using both a simplified lumped circuit model and full-wave numerical simulation, it is found that the microwave coherent absorptivity of the GSS can be tuned dynamically from nearly 50% to 100% by changing the Fermi level of the graphene. Strikingly, our simplified lumped circuit model agrees very well with the full-wave numerical model, offering valuable insight into the CPA operation of the device. The angle dependency of coherent absorption in the GSS is further investigated, making suggestions for achieving CPA at wide angles up to 80°. To show the validity and accuracy of our theory and numerical simulations, a GSS prototype is fabricated and measured in a C-band waveguide system. The reasonably good agreement between the experimental and the simulated results confirms that the tunable coherent absorption in GSS can be electrically controlled by changing the Fermi level of the graphene. © 2019 Chinese Laser Press. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/9814]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton; VIC; 3800, Australia 2.Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; 3.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China; |
| 推荐引用方式 GB/T 7714 | Zhang, J.I.N.,Wei, Xingzhan,Premaratne, Malin,et al. Experimental demonstration of an electrically tunable broadband coherent perfect absorber based on a graphene–electrolyte–graphene sandwich structure[J]. Photonics Research,2019,7(8):868-874. |
| APA | Zhang, J.I.N.,Wei, Xingzhan,Premaratne, Malin,&W., Zhu.(2019).Experimental demonstration of an electrically tunable broadband coherent perfect absorber based on a graphene–electrolyte–graphene sandwich structure.Photonics Research,7(8),868-874. |
| MLA | Zhang, J.I.N.,et al."Experimental demonstration of an electrically tunable broadband coherent perfect absorber based on a graphene–electrolyte–graphene sandwich structure".Photonics Research 7.8(2019):868-874. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。