Journal article
Terahertz Polarizers Based on 2D Ti3C2Tz MXene: Spin Cast from Aqueous Suspensions
Advanced photonics research, v 1(2), 2000084
Dec 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Herein, the fabrication of terahertz (THz) polarizers is reported on by simply spin casting two-dimensional (2D) MXene Ti3C2Tz nanosheets on a photolithographically patterned THz-transparent substrate and subsequent immersion in acetone. Lines 30 nm-thick and 10-20 mu m wide result in electric field (E) extinction ratios (ER) of up to 3 dB, or power ER of up to 6 dB. Simulations show the possibility of achieving ER beyond 16 dB, or power ER higher than 32 dB by increasing the thickness of the MXene lines to 1.5-2 mu m and optimizing the metasurface patterns. The Ti3C2Tz nanosheets are solution-processed and can be deposited on a variety of substrates, including flexible ones. Once encapsulated, chemically stable THz polarizers, that combine high performance and low production costs, can be readily manufactured, with characteristics that compare favorably with the much more involved metallic wire grid polarizers, including gold and tungsten. Moreover, recent demonstration of dynamic tunability of Ti3C2Tz THz conductivity by ultrafast optical pulses opens the possibility of using MXene wire-grids in high-speed THz modulators.
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Details
- Title
- Terahertz Polarizers Based on 2D Ti3C2Tz MXene: Spin Cast from Aqueous Suspensions
- Creators
- Guangjiang Li - Worcester Polytechnic InstituteKiana Montazeri - Drexel University, Materials Science and EngineeringMostafa K. Ismail - Drexel UniversityMichel W. Barsoum - Drexel University, Materials Science and EngineeringBahram Nabet - Drexel University, Electrical and Computer EngineeringLyubov V. Titova - Worcester Polytechnic Institute
- Publication Details
- Advanced photonics research, v 1(2), 2000084
- Publisher
- Wiley
- Grant note
- G.L. and K.M. contributed equally to this work. G.L. and L.V.T. thank Worcester Polytechnic Institute for financial support via Transformative Research and Innovation, Accelerating Discovery (TRIAD) seed grant. This work was funded by the Division of Materials Research of NSF (DMR 1740795). This work was conducted in part at Singh Center for Nanotechnology of the University of Pennsylvania through a grant to NanoGrass Photonics LLC. Singh Center is supported by the NSF National Nanotechnology Coordinated Infrastructure Program under grant NNCI-1542153.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; Materials Science and Engineering
- Web of Science ID
- WOS:000910985700013
- Other Identifier
- 991021860683404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Optics