Effects of Mid‐Infrared Graphene Plasmons on Photothermal Heating

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  • Anh D. Phan
    Phenikaa Institute for Advanced Study Artificial Intelligence Laboratory Faculty of Information Technology Faculty of Materials Science and Engineering Phenikaa University Hanoi 12116 Vietnam
  • Do T. Nga
    Institute of Physics Vietnam Academy of Science and Technology 10 Dao Tan, Ba Dinh Hanoi 12116 Vietnam
  • Do Chi Nghia
    Hanoi Pedagogical University 2 Nguyen Van Linh Street Vinh Phuc Vietnam
  • Vu Dinh Lam
    Graduate University of Science and Technology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi 10000 Vietnam
  • Katsunori Wakabayashi
    Department of Nanotechnology for Sustainable Energy School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan

説明

<jats:sec><jats:label /><jats:p>Herein, the plasmonic heating of graphene‐based systems under the mid‐infrared laser irradiation is theoretically investigated, where periodic arrays of graphene plasmonic resonators are placed on dielectric thin films. Optical resonances are sensitive to structural parameters and the number of graphene layers. Under mid‐infrared laser irradiation, the steady‐state temperature gradients are calculated. It is found that graphene plasmons significantly enhance the confinement of electromagnetic fields in the system and lead to a large temperature increase compared with the case without graphene. The correlations between temperature change and the optical power, laser spot, and thermal conductivity of dielectric layer in these systems are discussed. The numerical results are in accordance with experiments.</jats:p></jats:sec>

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