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Terahertz time domain spectroscopy of graphene and MXene polymer composites
Author(s) -
ZeranskaChudek Klaudia,
Lapinska Anna,
Siemion Agnieszka,
Jastrzębska Agnieszka M.,
Zdrojek Mariusz
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49962
Subject(s) - materials science , terahertz radiation , graphene , composite material , electromagnetic shielding , dielectric , dissipation factor , absorption (acoustics) , refractive index , composite number , optoelectronics , nanotechnology
The rising demand for faster and more efficient electronic devices forces electronics industry to shift toward terahertz frequencies. Therefore there is a growing need for efficient, lightweight, and easy to produce absorbing materials in the terahertz range for electromagnetic interference (EMI) shielding and related applications. This study presents a study on basic optical properties of two types polymer‐based composites loaded with two‐dimensional structures—graphene and MXene phases (Ti 2 C). In said range, total EMI shielding efficiency (SE) and its components, the absorption coefficient ( α ), refractive index, and complex dielectric function are investigated. The ratio of SE absorption component to reflection component ( SE ABS : SE R ) of fabricated composites is equal or higher than 30:1 in over 80% of studied range. The fabricated composites exhibit low (<0.1) loss tangent in studied range. The addition of 1 wt% of graphene increases the composite α over 10‐fold in respect to pure polymer–up to 60 cm −1 for frequency higher than 2 THz.