Ultrathin perfect absorber based on integrated metamaterial


  • Tran Tien Lam Faculty of Physics, Thai Nguyen University of Education, 20 Luong Ngoc Quyen, Thai Nguyen city, Viet Nam
  • Dinh Thi Nga Department of Physics and Technology, Thai Nguyen University of Sciences, Thai Nguyen city, Viet Nam
  • Dinh Van Thien Department of Physics, Hanoi University of Mining and Geology, 18 Vien, Hanoi, Viet Nam
  • Nguyen Sy Khiem Faculty of Physics, Hanoi University of Science, Ha Noi, Viet Nam
  • Bui Xuan Khuyen Institute of Materials Science, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Bui Son Tung Institute of Materials Science, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Vu Dinh Lam Graduate University of Science and Technology (GUST), Cau Giay, Ha Noi, Viet Nam




Metamaterials, Perfect absorption, Low frequency


We improved common metamaterial perfect absorber (MPA) by integrating four embedded inductors or replacing four embedded capacitors in the same compact structure. The obtained results confirmed that the lumped-capacitors MPA maintains an extreme thickness t = λ/940, where λ is operating wavelength at 106.3 MHz. Besides, by replacing these capacitors by inductors in the initial designed-MPA structure, we obtained an effective thickness of t = λ/53 at 1.9 GHz. Furthermore, we explained the absorption mechanism in terms of the magnetic energy and power loss distributions related to the impedance-matching effect.


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How to Cite

T. T. Lam, “Ultrathin perfect absorber based on integrated metamaterial”, Vietnam J. Sci. Technol., vol. 58, no. 5, pp. 571–577, Oct. 2020.