Terahertz time-domain spectroscopy of thin and flexible CNT-modified MXene/polymer composites

Herein, we report terahertz (THz) shielding of flexible MXene (Ti 3 C 2 T x )/MWCNT/PVA polymer composite films by using THz time-domain spectroscopy (THz-TDS) in 0.1–2.0 THz frequency range. The polymer composite with 42 µm thickness exhibited an excellent shielding effectiveness of 36 dB at 2 THz...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2021-05, Vol.127 (5), Article 382
Main Authors: Hussain, Khadim, Mehboob, Shoaib, Ahmad, Izhar, Mumtaz, Muhammad, Khan, Abdul Rehman, Mujtaba-ul-Hassan, Syed, Mehran, Muhammad Taqi, Iqbal, Zafar, Ahmad, Jamil, Mehmood, Mazhar, Shahzad, Faisal
Format: Article
Language:English
Subjects:
Absorptivity
Applied physics
Characterization and Evaluation of Materials
Condensed Matter Physics
Electrical resistivity
Electromagnetic radiation
Electromagnetic shielding
Frequency ranges
Levitation casting
Machines
Manufacturing
Materials science
MXenes
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Polymer films
Polymer matrix composites
Polymers
Processes
Spectroscopy
Spectrum analysis
Surfaces and Interfaces
Synergistic effect
Terahertz frequencies
Thickness
Thin Films
Time domain analysis
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Summary:Herein, we report terahertz (THz) shielding of flexible MXene (Ti 3 C 2 T x )/MWCNT/PVA polymer composite films by using THz time-domain spectroscopy (THz-TDS) in 0.1–2.0 THz frequency range. The polymer composite with 42 µm thickness exhibited an excellent shielding effectiveness of 36 dB at 2 THz which is much higher than most of the reported materials for THz shielding with comparable thickness. The absorption coefficient increases from 100 cm −1 for pristine PVA to ~ 600 cm −1 for 20 wt% MXene/1.5 wt% MWCNT/PVA composite. The high THz shielding of flexible MXene/MWCNT/polymer composite is ascribed to the good electrical conductivity and interfacial synergistic effect of 1D/2D nanostructures that promoted the shielding of electromagnetic waves. Our simple solution casting methodology for fabrication of thin films and subsequent high THz shielding opens possibilities to design MXene-based polymer composites for THz applications.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-021-04525-6