Microemitter-Based IR Spectroscopy and Imaging with Multilayer Graphene Thermal Emission
IR analyses such as Fourier transform infrared spectroscopy (FTIR) are widely used in many fields; however, the performance of FTIR is limited by the slow speed (∼10 Hz), large footprint (∼ millimeter), and glass bulb structure of IR light sources. Herein, we present IR spectroscopy and imaging base...
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| Veröffentlicht in: | Nano letters 2022-04, Vol.22 (8), p.3236-3244 |
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| container_issue | 8 |
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| container_title | Nano letters |
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| creator | Nakagawa, Kenta Shimura, Yui Fukazawa, Yusuke Nishizaki, Ryosuke Matano, Shinichiro Oya, Shuma Maki, Hideyuki |
| description | IR analyses such as Fourier transform infrared spectroscopy (FTIR) are widely used in many fields; however, the performance of FTIR is limited by the slow speed (∼10 Hz), large footprint (∼ millimeter), and glass bulb structure of IR light sources. Herein, we present IR spectroscopy and imaging based on multilayer-graphene microemitters, which have distinct features: a planar structure, bright intensity, a small footprint (sub-μm2), and high modulation speed of >50 kHz. We developed an IR analysis system based on the multilayer-graphene microemitter and performed IR absorption spectroscopy. We show two-dimensional IR chemical imaging that visualizes the distribution of the chemical information. In addition, we present high-spatial-resolution IR imaging with a spatial resolution of ∼1 μm, far higher than the diffraction limit. The graphene-based IR spectroscopy and imaging can open new routes for IR applications in chemistry, material science, medicine, biology, electronics, and physics. |
| doi_str_mv | 10.1021/acs.nanolett.1c04857 |
| format | Article |
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| ispartof | Nano letters, 2022-04, Vol.22 (8), p.3236-3244 |
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| subjects | Diagnostic Imaging Graphite Spectroscopy, Fourier Transform Infrared - methods |
| title | Microemitter-Based IR Spectroscopy and Imaging with Multilayer Graphene Thermal Emission |
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