A multiband flexible terahertz metamaterial with curvature sensing functionality

被引:46
作者
Zhao, Xiaoqing [1 ]
Yang, Bin [1 ]
Liu, Jingquan [1 ]
Pitchappa, Prakash [2 ]
Hasan, Dihan [2 ]
Ho, Chong Pei [2 ]
Yang, Chunsheng [1 ]
Lee, Chengkuo [2 ]
机构
[1] Shanghai Jiao Tong Univ, Dept Micro Nano Elect, Natl Key Lab Sci & Technol Micro Nano Fabricat, Dong Chuan Rd 800, Shanghai 200240, Peoples R China
[2] Natl Univ Singapore, Dept Elect & Comp Engn, 4 Engn Dr 3, Singapore 117576, Singapore
基金
中国国家自然科学基金;
关键词
multiband; flexible; terahertz metamaterials; curvature sensing; ABSORBER; SPECTROSCOPY;
D O I
10.1088/2040-8978/18/7/075101
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, we present a multiband flexible metamaterial in which one resonance acts as a strain sensor, while the others remain unchanged with bending strain, which might occur due to wrapping around an irregular curved surface. From both experiment and simulation, four transmission dips were observed at around 0.51, 1.34, 1.72 and 1.81 THz, respectively. The results indicated that the resonance dips in the flexible metamaterial arose from the different orders of dipole resonance mode. In the experiment, the frequency shift and amplitude modulation of the transmission at the first resonance increased linearly with the increase of the relative length change Delta l/L and changed as an exponential function of the applied bending strain. In addition, the first resonance frequency of the horizontal dipole blue shifted by 6.4 GHz, or about 1.29%, while the relative intensity change of 31.95% in the transmission was achieved when the strain was 2.79 parts per thousand. This study promises applications in curvature sensing and other controllable metamaterial-based devices.
引用
收藏
页数:7
相关论文
共 28 条
  • [1] Sub-diffraction-limited optical imaging with a silver superlens
    Fang, N
    Lee, H
    Sun, C
    Zhang, X
    [J]. SCIENCE, 2005, 308 (5721) : 534 - 537
  • [2] THz-spectroscopy of biological molecules
    Globus, TR
    Woolard, DL
    Khromova, T
    Crowe, TW
    Bykhovskaia, M
    Gelmont, BL
    Hesler, J
    Samuels, AC
    [J]. JOURNAL OF BIOLOGICAL PHYSICS, 2003, 29 (2-3) : 89 - 100
  • [3] Broadband multi-layer terahertz metamaterials fabrication and characterization on flexible substrates
    Han, N. R.
    Chen, Z. C.
    Lim, C. S.
    Ng, B.
    Hong, M. H.
    [J]. OPTICS EXPRESS, 2011, 19 (08): : 6990 - 6998
  • [4] Engineering the fano resonance and electromagnetically induced transparency in near-field coupled bright and dark metamaterial
    Han, Song
    Singh, Ranjan
    Cong, Longqing
    Yang, Helin
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2015, 48 (03)
  • [5] Han Z, 2015, IEEE J SEL TOP QUANT, V21
  • [6] MEMS reconfigurable metamaterial for terahertz switchable filter and modulator
    Han, Zhengli
    Kohno, Kenta
    Fujita, Hiroyuki
    Hirakawa, Kazuhiko
    Toshiyoshi, Hiroshi
    [J]. OPTICS EXPRESS, 2014, 22 (18): : 21326 - 21339
  • [7] Landy N, 2013, NAT MATER, V12, P25, DOI [10.1038/NMAT3476, 10.1038/nmat3476]
  • [8] Mechanically tunable terahertz metamaterials
    Li, Jining
    Shah, Charan M.
    Withayachumnankul, Withawat
    Ung, Benjamin S. -Y.
    Mitchell, Arnan
    Sriram, Sharath
    Bhaskaran, Madhu
    Chang, Shengjiang
    Abbott, Derek
    [J]. APPLIED PHYSICS LETTERS, 2013, 102 (12)
  • [9] Flexible liquid metal-filled metamaterial absorber on polydimethylsiloxane (PDMS)
    Ling, Kenyu
    Kim, Kyeoungseob
    Lim, Sungjoon
    [J]. OPTICS EXPRESS, 2015, 23 (16): : 21375 - 21383
  • [10] Detection and identification of explosive RDX by THz diffuse reflection spectroscopy
    Liu, HB
    Chen, YQ
    Bastiaans, GJ
    Zhang, XC
    [J]. OPTICS EXPRESS, 2006, 14 (01) : 415 - 423