MXenes及其复合物的太赫兹电磁屏蔽与吸收OA北大核心CSTPCD

Developing novel low-dimensional materials for terahertz electromagnetic shielding and absorbing applications represents a critical research frontier.Their unique electrical,mechanical,and electromagnetic responses hold great potential in enabling more efficient solutions for electromagnetic shielding and absorbing.Two-dimensional transition metal carbides,nitrides,and carbonitride MXenes have already demonstrated excellent electromagnetic shielding and absorbing performance in the low-frequency spectrum.MXenes possess high conductivity,low density,and high flexibility,which are advantageous for future portability and integration of terahertz devices and systems.However,practical implementation of MXene-based terahertz electromagnetic shielding and absorption materials faces challenges in adhesion stability,environmental resilience,and high-temperature tolerance,hindering their suitability for aerospace and future next generation communication applications.Moreover,in the terahertz frequency band,lacking more comprehensive and reliable electromagnetic scattering and absorbing measurement methods limits the development of THz shielding and absorbing materials.Extensive research efforts have targeted on these limitations,exploring fundamental architectural and theoretical aspects of prevalent electromagnetic materials.This review specifically highlights the terahertz electromagnetic shielding and absorption characteristics inherent in various MXenes and their compositions,such as Ti3C2Tx,Mo2Ti2C3Tx,Mo2TiC2Tx,Nb4C3Tx,and Nb2CTx.Additionally,this review envisages the forthcoming challenges and prospects of MXenes as a pivotal electromagnetic shielding and absorbing material within the terahertz frequency band.