Journal article
Influence of MXene Interlayer Spacing on the Interaction with Microwave Radiation
Advanced functional materials, v 35(18), 2410591
02 May 2025
Abstract
Abstract The origin of MXene's excellent electromagnetic shielding performance is not fully understood. MXene films, despite being inhomogeneous at the nanometer scale, are often treated as if they are compared to bulk conductors. It is reasonable to wonder if the treatment of MXene as a homogeneous material remains valid at very small film thickness and if it depends on the interlayer spacing. The goal of the present work is to test if the homogeneous material model is applicable to nanometer‐thin Ti 3 C 2 T x MXene films and, if so, to investigate how the model parameters may depend on variations in MXene interlayer spacings. MXene films containing flakes with interlayer spacing between 1.9 and 5.5 Å have been prepared using various intercalating agents. It is shown that modeling the films as being homogeneous agrees with experimental tests in the microwave frequency range. Microwave conductivity and dielectric constant parameters are estimated for the homogeneous film model by fitting measured results. The direct current (DC) conductivity matches the estimated microwave conductivity on the order of magnitude. A highly effective dielectric constant provides a good fit for the lower conductivity MXene films. Optical absorption agrees with the homogeneous material model of thin films as well.
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Details
- Title
- Influence of MXene Interlayer Spacing on the Interaction with Microwave Radiation
- Creators
- Roman Rakhmanov - Drexel UniversityStefano Ippolito - Drexel UniversityMarley Downes - Drexel UniversityAlex Inman - Drexel UniversityJamal AlHourani - Drexel UniversityJames Fitzpatrick - Drexel UniversityYury Gogotsi - Drexel UniversityGary Friedman (Corresponding Author) - Drexel University
- Publication Details
- Advanced functional materials, v 35(18), 2410591
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
This work was supported by the U.S. National Science Foundation (grants ECCS-2034114). The authors thank Prof. Aaron Fafarman and Prof. Christopher Shuck for valuable discussions, Prof. Kapil Dandekar for providing access to PNA-X, Dr. Iryna Roslyk for providing multilayer MXene, Dr. Ruocun (John) Wang for collecting the SEM images and Teng Zhang for help with protonation of the samples.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; C. and J. Nyheim Plasma Institute; Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001307406300001
- Scopus ID
- 2-s2.0-105003814216
- Other Identifier
- 991021903303904721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter