Flexible and elastic metamaterial absorber for low frequency, based on small-size unit cell
- Department of Physics, Sungkyunkwan University, Suwon (Korea, Republic of)
- Department of Nano and Electronic Physics, Kookmin University, Seoul (Korea, Republic of)
- Department of Information Display, Sunmoon University, Asan (Korea, Republic of)
- Department of Physics, Sogang University, Seoul (Korea, Republic of)
- Infovion Inc., Seoul (Korea, Republic of)
Using a planar and flexible metamaterial (MM), we obtained the low-frequency perfect absorption even with very small unit-cell size in snake-shape structure. These shrunken, deep-sub-wavelength and thin MM absorbers were numerically and experimentally investigated by increasing the inductance. The periodicity/thickness (the figure of merit for perfect absorption) is achieved to be 10 and 2 for single-snake-bar and 5-snake-bar structures, respectively. The ratio between periodicity and resonance wavelength (in mm) is close to 1/12 and 1/30 at 2 GHz and 400 MHz, respectively. The absorbers are specially designed for absorption peaks around 2 GHz and 400 MHz, which can be used for depressing the electromagnetic noise from everyday electronic devices and mobile phones.
- OSTI ID:
- 22311360
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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