Projects per year
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 SO2, NO2, N2O, 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 mu m(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 (
Original language | English |
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Article number | 1131 |
Number of pages | 7 |
Journal | Nature Communications |
Volume | 10 |
Issue number | 1 |
DOIs | |
Publication status | Published - 8 Mar 2019 |
MoE publication type | A1 Journal article-refereed |
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- 8 Finished
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A-Photonics
Sun, Z., Pyymaki Perros, A., Dai, Y., Du, M., Kim, M., Hedberg, D., Lau Kuen Yao, L. & Rajamanickam, R.
01/01/2019 → 31/12/2020
Project: Business Finland: New business from research ideas (TUTLI)
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S2QUIP: Scalable Two-Dimensional Quantum Integrated Photonics
Sun, Z., Du, M., Bai, X., Yoon, H. H., Mohsen, A., Wang, Y., Turunen, M., Hu, X. & Uddin, M.
01/10/2018 → 31/03/2022
Project: EU: Framework programmes funding
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LAYERED 2D MATERIALS BASED THZ SPECTROSCOPY AND IMAGING
Sun, Z., Generalov, A., Das, S., Hulkko, E., Mohsen, A. & Uddin, M.
01/01/2018 → 31/12/2021
Project: Academy of Finland: Other research funding