Kashiwagi, K.Xie, L.Li, X.Kageyama, T.Miura, M.Miyashita, H.Kono, J.Lee, S.-S.2018-07-162018-07-162018Kashiwagi, K., Xie, L., Li, X., et al.. "Flexible and stackable terahertz metamaterials via silver-nanoparticle inkjet printing." <i>AIP Advancesﾠ,</i> 8, no. 4 (2018) AIP Publishing: https://doi.org/10.1063/1.5006867.https://hdl.handle.net/1911/102437There is presently much interest in tunable, flexible, or reconfigurable metamaterial structures that work in the terahertz frequency range. They can be useful for a range of applications, including spectroscopy, sensing, imaging, and communications. Various methods based on microelectromechanical systems have been used for fabricating terahertz metamaterials, but they typically require high-cost facilities and involve a number of time-consuming and intricate processes. Here, we demonstrate a simple, robust, and cost-effective method for fabricating flexible and stackable multiresonant terahertz metamaterials, using silver nanoparticle inkjet printing. Using this method, we designed and fabricated two arrays of split-ring resonators (SRRs) having different resonant frequencies on separate sheets of paper and then combined the two arrays by stacking. Through terahertz time-domain spectroscopy, we observed resonances at the frequencies expected for the individual SRR arrays as well as at a new frequency due to coupling between the two SRR arrays.engAll article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Journal articlehttps://doi.org/10.1063/1.5006867