Journal article
Ultrabroadband and Highly Sensitive Short-Wave Infrared Molecular Fingerprinting via Acoustic MXene Plasmons
Advanced science, Forthcoming
16 Apr 2026
PMID: 41990263
Featured in Collection : Drexel's Newest Publications
Abstract
Surface-enhanced infrared absorption (SEIRA) spectroscopy has emerged as a powerful technique, amplifying inherently weak molecular vibration signatures to enable ultrasensitive detection of molecular structure and dynamics. However, conventional SEIRA platforms based on noble metals or 2D materials are fundamentally constrained by their narrow spectral bandwidths and limited access to high-frequency vibrational modes. Here, we demonstrate an ultrabroadband SEIRA approach that overcomes these limitations by activating acoustic plasmon modes in two-dimensional Ti
C
T
MXene. These acoustic plasmons provide deep subwavelength confinement, compressing wavelengths by more than two orders of magnitude relative to free space in the short-wave infrared (SWIR), and sustaining an unprecedented spectral bandwidth of approximately 5000 cm
. Using this platform, we achieve simultaneous detection of distinct vibrational fingerprints-from high-frequency CH
combination bands near 4700 cm
to low-frequency out-of-plane bending modes around 700 cm
-in ultrathin analytes such as 8 nm PMMA and 10 nm graphene oxide films, with up to an order-of-magnitude sensitivity enhancement. These results establish acoustic plasmon modes in MXene as a transformative foundation for ultrabroadband, high-sensitivity deep-infrared spectroscopy, paving the way for next-generation molecular sensing technologies.
Metrics
1 Record Views
Details
- Title
- Ultrabroadband and Highly Sensitive Short-Wave Infrared Molecular Fingerprinting via Acoustic MXene Plasmons
- Creators
- Changhoon Park - Korea UniversityJisung Kwon - Korea UniversityNu-Ri Park - University of SeoulHyerim Kim - Korea UniversityHyeju Kim - Korea UniversityYury Gogotsi - Drexel UniversityChong Min Koo - Sungkyunkwan UniversityMyung-Ki Kim (Corresponding Author) - University of Seoul
- Publication Details
- Advanced science, Forthcoming
- Publisher
- Wiley; WEINHEIM
- Grant note
- KU-KIST School Project 2021M3H4A1A03047327 / Korea Institute of Science and Technology; the National Research Foundation of Korea (NRF) RS-2025-02215065 / Korea Institute of Science and Technology; the National Research Foundation of Korea (NRF) 26E0011 / KIST institutional program RS-2025-25465325 / Korea Institute of Science and Technology; the National Research Foundation of Korea (NRF) P0028332 / Ministry of Trade, Industry, and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the International Cooperative R&D program 2022-0-00198 / Institute for Information & Communication Technology Planning & Evaluation (IITP) IITP-2025-RS-2022-00164799 / Institute for Information & Communication Technology Planning & Evaluation (IITP) RS-2025-00558607 / Korea Institute of Science and Technology; the National Research Foundation of Korea (NRF) RS-2025-25445839 / Korea Institute of Science and Technology; the National Research Foundation of Korea (NRF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001741795600001
- Other Identifier
- 991022173526504721