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Title: Flexible and elastic metamaterial absorber for low frequency, based on small-size unit cell

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.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6]
  1. Department of Physics and RINS, Hanyang University, Seoul 133-791 (Korea, Republic of)
  2. Department of Physics, Sungkyunkwan University, Suwon (Korea, Republic of)
  3. Department of Nano and Electronic Physics, Kookmin University, Seoul (Korea, Republic of)
  4. Department of Information Display, Sunmoon University, Asan (Korea, Republic of)
  5. Department of Physics, Sogang University, Seoul (Korea, Republic of)
  6. Infovion Inc., Seoul (Korea, Republic of)
Publication Date:
OSTI Identifier:
22311360
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ELECTRONIC EQUIPMENT; GHZ RANGE; MHZ RANGE; NOISE; PERIODICITY; THICKNESS; WAVELENGTHS