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Cited by 70Spectroscopy Techniques in Biomedical and Chemical ResearchSpectroscopy and Chemometric AnalysesCultural Heritage Materials Analysis

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

On Selecting a Suitable Spectral Matching Method for Automated Analytical Applications of Raman Spectroscopy

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Abstract

Raman spectra are molecular structure-specific and hence are employed in applications requiring chemical identification. The advent of efficient handheld and smartphone-based Raman instruments is promoting widespread applications of the technique, which often involve less trained end users. Software modules that enable spectral library searches based on spectral pattern matching is an essential part of such applications. The Raman spectrum recorded by end users will naturally have varying levels of signal to noise (SN), baseline fluctuations, etc., depending on the sample environment. Further, in biological, forensic, food, pharmaceuticals, etc., fields where a vast amount of Raman spectral data is generated, careful removal of background is often impossible. In other words, a 100% match between the library spectrum and user input cannot be often guaranteed or expected. Often, such influences are discounted upon developing mathematical methods for general applications. In this manuscript, we carefully examine how such effects would determine the results of spectral similarity-based library search. We show that several popular mathematical spectral matching approaches give incorrect results under the influence of small changes in the baseline and/or the noise. We also discuss the points to be carefully considered while generating a spectral library. We believe our results will be a guiding note for developing applications of Raman spectroscopy that uses a standard spectral library and mathematical spectral matching.

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Metadata

Authors
Samuel, A. Z., Mukojima, R., Horii, S., Ando, M., Egashira, S., Nakashima, T., Iwatsuki, M., & Takeyama, H.
Affiliations
  • Waseda University (JP)
  • Ōmura Satoshi Memorial Institute (JP)
Corresponding author
  • Samuel, Ashok Zachariah
  • Takeyama, Haruko
Venue
ACS Omega
Published
2021-01-11
Volume
6
Issue
3
Pages
2060-2065
ISSN
2470-1343 (ISSN-L)
OpenAlex
W3120367488
Cited by
70
References
19
Citations by year
2026: 20 · 2025: 18 · 2024: 14 · 2023: 9 · 2022: 4 · 2021: 5
FWCI
3.63
Type
journal article
Language
en
Open access
Locations
  • ACS Omega (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Ministry of Education, Culture, Sports, Science and Technology (17H06158)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Social Sciences › Arts and Humanities › Archeology (arts and humanities) › Cultural Heritage Materials Analysis
Keywords
Raman spectroscopy, spectral matching, spectral library search, spectral similarity, baseline fluctuation, signal-to-noise ratio, spectral library construction

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