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7 March 2022 Porous carbon nanowires for plasmon-free SERS
Tinghui Xiao, Nan Chen, Zhengyi Luo, Yasutaka Kitahama, Kotaro Hiramatsu, Naoki Kishimoto, Tamitake Itoh, Zhenzhou Cheng, Keisuke Goda
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Proceedings Volume PC11957, Biomedical Vibrational Spectroscopy 2022: Advances in Research and Industry; PC119570O (2022) https://doi.org/10.1117/12.2609257
Event: SPIE BiOS, 2022, San Francisco, California, United States
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful tool for vibrational spectroscopy, but is compromised by its low reproducibility, uniformity, biocompatibility, and durability. This is because it depends on “hot spots” for high signal enhancement. Here we report our experimental demonstration of a plasmon-free nanostructure composed of a two-dimensional array of porous carbon nanowires as a SERS substrate for highly sensitive, biocompatible, and reproducible SERS. Specifically, the substrate provides not only high signal enhancement, but also high reproducibility and fluorescence quenching capability. We experimentally demonstrated these excellent properties with various molecules such as rhodamine 6G (R6G), β-lactoglobulin, and glucose.
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Tinghui Xiao, Nan Chen, Zhengyi Luo, Yasutaka Kitahama, Kotaro Hiramatsu, Naoki Kishimoto, Tamitake Itoh, Zhenzhou Cheng, and Keisuke Goda "Porous carbon nanowires for plasmon-free SERS", Proc. SPIE PC11957, Biomedical Vibrational Spectroscopy 2022: Advances in Research and Industry, PC119570O (7 March 2022); https://doi.org/10.1117/12.2609257
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KEYWORDS
Surface enhanced Raman spectroscopy
Carbon
Nanowires
Metals
Resonance enhancement
Nanostructures
Raman scattering
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