Gas identification with graphene plasmons
Open accessAbstract
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 μm 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.
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Molecular enrichment strategies bring additional working requirements for specific molecules, impeding global molecular recognition.
“The molecular enrichment strategies, including functionalized chemical bonding17,18, chemical reaction19,20, physical adsorption21–23, optical trapping24 as well as passive trapping by undercut structure25–28 bring in the additional working requirements (e.g., chemical stimuli, temperature, pressure, pump power, etc.) for specific molecules, impeding the system for global molecular recognition.”
From Wavelength-multiplexed hook nanoantennas for machine learning enabled mid-infrared spectroscopy (2022) · cites this paper as [21]
Three approaches to optimize nanoantenna sensing by increasing coupling efficiency μ are hotspot release, molecule enrichment, and squeezing adjacent nanoantennas into a nanogap.
“Figure 2b summarizes three approaches to optimize nanoantenna sensing by increasing μ. Hotspots release is proposed to increase accessible sensing areas for analytes, which are usually blocked by the substrate, to further enhance the coupling efficiency25–28.”
From Wavelength-multiplexed hook nanoantennas for machine learning enabled mid-infrared spectroscopy (2022) · cites this paper as [21]
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References 61 · Cited by 225
Research works printed but not linked: 1
- [57]Bae, S. et al. Roll-to-roll production of 30-inch graphene films for transparent electrodes. Nat. Nanotechnol.5, 574–578 (2010). 20562870
- Authors
- Hu, H., Yang, X., Guo, X., Khaliji, K., Biswas, S. R., García de Abajo, F. J., Low, T., Sun, Z., & Dai, Q.
- Affiliations
- National Center for Nanoscience and Technology (CN)
- University of Minnesota (US)
- Aalto University (FI)
- Chinese Academy of Sciences (CN)
- Corresponding author
- Low, Tony
- Sun, Zhipei
- Dai, Qing
- ORCID
- Venue
- Nature Communications
- Published
- 2019-03-08
- Volume
- 10
- Issue
- 1
- Pages
- 1131-1131
- ISSN
- 2041-1723 (ISSN-L)
- PMC
- PMC6408516
- OpenAlex
- W2921583012
- Cited by
- 225
- References
- 61
- Citations by year
- 2026: 14 · 2025: 18 · 2024: 28 · 2023: 30 · 2022: 41 · 2021: 33 · 2020: 44 · 2019: 16 · 2018: 1
- FWCI
- 11.81
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Nature Communications (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Aaltodoc (Aalto University) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- National Science Foundation (1741660, 820423)
- Fundación Cellex (SEV2015-0522)
- Centres de Recerca de Catalunya
- European Commission (SEV2015‐0522, HORIZON2020, 631610, S2QUIP, 820423, 789104, 312297)
- National Natural Science Foundation of China (2016YFA0201600, 11674073, 11504063, 51372045)
- Chinese Academy of Sciences (2016YFA0201600)
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Business Finland
- Agència de Gestió d'Ajuts Universitaris i de Recerca (2014‐SGR‐1400)
- National Key Research and Development Program of China (2016YFA0201600, No. 2016YFA0201600, 2015CB932400)
- Youth Innovation Promotion Association
- Division of Emerging Frontiers in Research and Innovation (1741660, EFRI-1741660)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Gas Sensing Nanomaterials and Sensors
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
- Keywords
- graphene plasmons, label-free detection, graphene nanoribbons, gas adsorption, field confinement, volatile organic compounds
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