2020 Fiscal Year Annual Research Report
Acute nose-on-a-chip based on mid-infrared graphene-on-silicon hybrid photonic-plasmonic waveguides
| Project/Area Number |
18K13798
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| Research Institution | The University of Tokyo |
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Principal Investigator |
CHENG Zhenzhou 東京大学, 大学院理学系研究科(理学部), 客員共同研究員 (50772092)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Keywords | Raman spectroscopy / gas sensing / silicon photonics / graphene |
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| Outline of Annual Research Achievements |
In this fiscal year, we studied advanced Raman spectroscopy techniques, on-chip gas sensing, and multi-mode silicon devices under the support of the KAKENHI fund. First, we demonstrated surface-enhanced Raman spectroscopy and surface-enhanced Raman optical activity based on the novel dielectric nanostructured substrates, namely, porous carbon nanowire array and silicon nanodisk array, respectively. In the advanced Raman spectroscopy topic, two papers have been published (or accepted) by Nature Communications. Moreover, we published an invited review paper about surface-enhanced Raman spectroscopy in Journal of Semiconductors. Second, we studied an electric-field assisted resonance scanning spectroscopic technique based on a graphene-on-silicon dual-mode microring resonator to overcome the refractive index and temperature cross-sensitive effect. One manuscript is currently reviewed by IEEE Journal of Selected Topics in Quantum Electronics. Also, we published an on-chip gas sensing review paper in ACS Photonics. Finally, we designed multimode-waveguide-integrated electro-optical modulators and group-velocity-dispersion-engineered convex waveguides which have been published in Optics Express and IEEE Photonics Journal, respectively. Based on the above results, I have given one invited talk and presented two oral speeches at international conferences.
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