Optical-Transparent Self-Assembled MXene Film with High-Efficiency Terahertz Reflection Modulation
- 19 February 2021
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 13 (8), 10574-10582
- https://doi.org/10.1021/acsami.0c20787
Abstract
The modulation of the terahertz (THz) wave is fundamental for its applications in next-generation communications, biological imaging, sensing, and so forth. Searching for higher efficient modulation is still in progress, although plenty of materials have been explored for tuning THz wave. In this work, optical-transparent self-assembled MXene films are used to modulate the THz reflection at the SiO2/MXene/air interface based on the impedance matching mechanism. By adjusting the number of stacked MXene layers/concentrations of MXene dispersions, the sheet conductivity of the MXene films will be changed so that the impedance at the SiO2/MXene/air interface can be tuned and lead to a giant modulation of THz reflection. Particularly, we demonstrate that the MXene films have highly efficient THz modulation from antireflection to reflection-enhancing with a relative reflection of 27% and 406%, respectively. This work provides a new pathway for developing the MXene films with the combination of optical-transparency and high smart THz reflection characteristics, and the films can be applied for THz antireflection or reflection-enhancing.Keywords
Funding Information
- Ministry of Education of the People's Republic of China
- National Natural Science Foundation of China (1930123, 61771327, U1730138)
- Sichuan Province (19ZDYF2180, 2018GZ0328)
This publication has 51 references indexed in Scilit:
- Solution-processable reduced graphene oxide films as broadband terahertz wave impedance matching layersJournal of Materials Chemistry C, 2015
- Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitanceNature, 2014
- Ultrafast all-optical switching via coherent modulation of metamaterial absorptionApplied Physics Letters, 2014
- Two-Minute Assembly of Pristine Large-Area Graphene Based FilmsNano Letters, 2014
- Wireless sub-THz communication system with high data rateNature Photonics, 2013
- Terahertz-field-induced insulator-to-metal transition in vanadium dioxide metamaterialNature, 2012
- Giant Phase Transition Properties at Terahertz Range in VO2 films Deposited by Sol–Gel MethodACS Applied Materials & Interfaces, 2011
- Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2Advanced Materials, 2011
- Carrier concentration dependence of terahertz transmission on conducting ZnO filmsApplied Physics Letters, 2008
- Nanostructured gold films as broadband terahertz antireflection coatingsPhysical Review B, 2008