| Title: | Gas identification with graphene plasmons |
| Author(s): | Hu H; Yang X; Guo X; Khaliji K; Biswas SR; Garcia de Abajo FJ; Low T; Sun Z; Dai Q; |
| Address: | "Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 100190, Beijing, China. University of Chinese Academy of Sciences, 100049, Beijing, China. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA. ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels (Barcelona), Spain. ICREA-Institucio Catalana de Recerca i Estudis Avancats, Passeig Lluis Companys 23, 08010, Barcelona, Spain. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA. tlow@umn.edu. Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Espoo, Finland. zhipei.sun@aalto.fi. QTF Centre of Excellence, Department of Applied Physics, Aalto University, FI-00076, Aalto, Finland. zhipei.sun@aalto.fi. Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 100190, Beijing, China. daiq@nanoctr.cn. University of Chinese Academy of Sciences, 100049, Beijing, China. daiq@nanoctr.cn" |
| DOI: | 10.1038/s41467-019-09008-0 |
| ISSN/ISBN: | 2041-1723 (Electronic) 2041-1723 (Linking) |
| Abstract: | "Identification of gas molecules plays a key role a wide range of applications extending from healthcare to security. However, the most widely used gas nano-sensors are based on electrical approaches or refractive index sensing, which typically are unable to identify molecular species. Here, we report label-free identification of gas molecules SO(2), NO(2), N(2)O, and NO by detecting their rotational-vibrational modes using graphene plasmon. The detected signal corresponds to a gas molecule layer adsorbed on the graphene surface with a concentration of 800 zeptomole per mum(2), which is made possible by the strong field confinement of graphene plasmons and high physisorption of gas molecules on the graphene nanoribbons. We further demonstrate a fast response time (<1 min) of our devices, which enables real-time monitoring of gaseous chemical reactions. The demonstration and understanding of gas molecule identification using graphene plasmonic nanostructures open the door to various emerging applications, including in-breath diagnostics and monitoring of volatile organic compounds" |
| Notes: | "PubMed-not-MEDLINEHu, Hai Yang, Xiaoxia Guo, Xiangdong Khaliji, Kaveh Biswas, Sudipta Romen Garcia de Abajo, F Javier Low, Tony Sun, Zhipei Dai, Qing eng Research Support, Non-U.S. Gov't England 2019/03/10 Nat Commun. 2019 Mar 8; 10(1):1131. doi: 10.1038/s41467-019-09008-0" |
