ACS Publications. Most Trusted. Most Cited. Most Read
Adaptive Gap-Tunable Surface-Enhanced Raman Spectroscopy

OR SEARCH CITATIONS

My Activity
Publications

Figure 1Loading Img
Download Hi-Res ImageDownload to MS-PowerPointCite This:Nano Lett. 2024, 24, 12, 3777-3784
    Letter

    Adaptive Gap-Tunable Surface-Enhanced Raman Spectroscopy
    Click to copy article linkArticle link copied!

    • Taeyoung Moon
      Taeyoung Moon
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      More by Taeyoung Moon
      Orcidhttps://orcid.org/0009-0009-8812-7578
    • Huitae Joo
      Huitae Joo
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      More by Huitae Joo
    • Bamadev Das
      Bamadev Das
      Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      More by Bamadev Das
    • Yeonjeong Koo
      Yeonjeong Koo
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      More by Yeonjeong Koo
      Orcidhttps://orcid.org/0000-0003-3648-1275
    • Mingu Kang
      Mingu Kang
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      More by Mingu Kang
    • Hyeongwoo Lee
      Hyeongwoo Lee
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      More by Hyeongwoo Lee
    • Sunghwan Kim
      Sunghwan Kim
      Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      More by Sunghwan Kim
      Orcidhttps://orcid.org/0000-0002-0102-9169
    • Cheng Chen
      Cheng Chen
      Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      More by Cheng Chen
    • Yung Doug Suh*
      Yung Doug Suh
      Department of Chemistry & School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
      *E-mail: [email protected]
      More by Yung Doug Suh
      Orcidhttps://orcid.org/0000-0003-2352-693X
    • Dai-Sik Kim*
      Dai-Sik Kim
      Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      *E-mail: [email protected]
      More by Dai-Sik Kim
      Orcidhttps://orcid.org/0000-0002-8950-1199
    • Kyoung-Duck Park*
      Kyoung-Duck Park
      Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
      *E-mail: [email protected]
      More by Kyoung-Duck Park
      Orcidhttps://orcid.org/0000-0002-9302-9384
    Other Access OptionsSupporting Information (1)

    Nano Letters

    Cite this: Nano Lett. 2024, 24, 12, 3777–3784
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.nanolett.4c00289
    Published March 18, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

    Abstract

    Click to copy section linkSection link copied!
    Abstract Image

    Gap plasmon (GP) resonance in static surface-enhanced Raman spectroscopy (SERS) structures is generally too narrow and not tunable. Here, we present an adaptive gap-tunable SERS device to selectively enhance and modulate different vibrational modes via active flexible Au nanogaps, with adaptive optical control. The tunability of GP resonance is up to ∼1200 cm–1 by engineering gap width, facilitated by mechanical bending of a polyethylene terephthalate substrate. We confirm that the tuned GP resonance selectively enhances different Raman spectral regions of the molecules. Additionally, we dynamically control the SERS intensity through the wavefront shaping of excitation beams. Furthermore, we demonstrate simulation results, exhibiting the mechanical and optical properties of a one-dimensional flexible nanogap and their advantage in high-speed biomedical sensing. Our work provides a unique approach for observing and controlling the enhanced chemical responses with dynamic tunability.

    Copyright © 2024 American Chemical Society

    Subjects

    what are subjects

    Keywords

    what are keywords

    Read this article

    To access this article, please review the available access options below.

    Get instant access

    Purchase Access

    Read this article for 48 hours. Check out below using your ACS ID or as a guest.

    Recommended

    Access through Your Institution

    You may have access to this article through your institution.

    Your institution does not have access to this content. Add or change your institution or let them know you’d like them to include access.

    Supporting Information

    Click to copy section linkSection link copied!

    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.nanolett.4c00289.

    • Experimental methods, mechanical simulation of the Au nanogap on the PET substrate, calculated top and bottom gap width of the flexible Au nanogap, SEM images of the flexible nanogap at several different large gap widths, SEM images of the flexible nanogap at different gap widths, extinction spectra of the flexible nanogap at different gap widths, stability of the GP resonance at different wgap, correlation between the GP and SERS intensities, non-resonant SERS spectrum of BCB molecules at wgap = 8 nm, SERS spectra using an excitation wavelength of 633 nm, excitation polarization dependence of the GP spectra at the nanogap (wgap = 38 nm), phase masks used for a-SERS measurements, GP spectra of the Au nanogap (wgap = 26 nm) with the optimal phase mask, no change in a-SERS intensity with a mismatched phase mask, several considerations for the gap-tunable SERS device (PDF).

    Terms & Conditions

    Electronic Supporting Information files are available without a subscription to ACS Web Editions. The American Chemical Society holds a copyright ownership interest in any copyrightable Supporting Information. Files available from the ACS website may be downloaded for personal use only. Users are not otherwise permitted to reproduce, republish, redistribute, or sell any Supporting Information from the ACS website, either in whole or in part, in either machine-readable form or any other form without permission from the American Chemical Society. For permission to reproduce, republish and redistribute this material, requesters must process their own requests via the RightsLink permission system. Information about how to use the RightsLink permission system can be found at http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

    Click to copy section linkSection link copied!
    Citation Statements
    Explore this article's citation statements on scite.ai
    powered by  Scite

    This article is cited by 2 publications.

    1. Biqing Chen, Jiayin Gao, Haizhu Sun, Zhi Chen, Xiaohong Qiu. Wearable SERS devices in health management: Challenges and prospects. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2025, 334 , 125957. https://doi.org/10.1016/j.saa.2025.125957
    2. Yanqiu Zou, Huaizhou Jin, Qifei Ma, Zhenrong Zheng, Shukun Weng, Karol Kolataj, Guillermo Acuna, Ilko Bald, Denis Garoli. Advances and applications of dynamic surface-enhanced Raman spectroscopy (SERS) for single molecule studies. Nanoscale 2025, 17 (7) , 3656-3670. https://doi.org/10.1039/D4NR04239E
    Download PDF
    Go to Nano Letters
    Get e-Alerts
    Get e-Alerts

    Nano Letters

    Cite this: Nano Lett. 2024, 24, 12, 3777–3784
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.nanolett.4c00289
    Published March 18, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

    Article Views

    2146

    Altmetric

    -

    Citations

    2
    Learn about these metrics

    Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.

    Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.

    The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.