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Nonlinear THz‐Nano Metasurfaces: Nonlinear THz‐Nano Metasurfaces (Adv. Funct. Mater. 24/2021)
Author(s) -
Dong Tian,
Li Shaoxian,
Manjappa Manukumara,
Yang Peidi,
Zhou Jiangping,
Kong Deyin,
Quan Baogang,
Chen Xieyu,
Ouyang Chen,
Dai Fei,
Han Jiaguang,
Ouyang Chunmei,
Zhang Xueqian,
Li Junjie,
Li Yang,
Miao Jungang,
Li Yutong,
Wang Li,
Singh Ranjan,
Zhang Weili,
Wu Xiaojun
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202170170
Subject(s) - terahertz radiation , materials science , optoelectronics , nano , nonlinear system , capacitive sensing , electric field , nanometre , nanotechnology , electrical engineering , physics , composite material , quantum mechanics , engineering
In article number 2100463, Ranjan Singh, Weili Zhang, Xiaojun Wu, and co‐workers successfully fabricate novel nonlinear THz metasurfaces with nanometer capacitive gaps and large size and experimentally realized with precise frequency tuning. The gigantic resonant electric field enhancement in nanogaps induces carrier multiplication in silicon substrates, resulting in conductivity increase in the capacitive gap regions of the metasurface, serving as the source for the nonlinear response.