Frequency Tunable Metamaterial Absorber Using Hygroscopicity of Nature Cork
- Authors
- Ling, Kenyu; Yoo, Minyeong; Lim, Sungjoon
- Issue Date
- Mar-2015
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Artificial electromagnetic metamaterials; frequency tunable metamaterial absorber; humidity sensor; microwave absorber
- Citation
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, v.14, pp 1598 - 1601
- Pages
- 4
- Journal Title
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
- Volume
- 14
- Start Page
- 1598
- End Page
- 1601
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/11411
- DOI
- 10.1109/LAWP.2015.2413939
- ISSN
- 1536-1225
1548-5757
- Abstract
- In this letter, a novel frequency tunable metamaterial absorber is proposed for wireless humidity sensor applications made with natural cork. Natural cork has excellent hygroscopicity and its electrical properties can be changed depending on the moisture content. In this work, the absorption ratio of the proposed absorber are simulated and measured in different moisture content (M = 0%, 1.44%, 5.88%, 13.32%, 18.8%) of the cork substrate. The resonant frequency changed from 4.92 GHz in the dry (M = 0%) state to 3.49 GHz in the wet (M = 18.8%) state; the measured absorptivity is higher than 90% in all moisture content values. To the best of our knowledge, it is the first metamaterial absorber using natural cork.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.