Spectroscopic analysis of polymer banknotes from the second series of Costa Rica
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| Autoři: | , |
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| Médium: | artículo original |
| Stav: | Versión publicada |
| Datum vydání: | 2025 |
| Popis: | Counterfeiting of banknotes is a persistent problem in Costa Rica, making it essential to ensure their authenticity for economic security and confidence in the financial system. For this reason, banknotes incorporate various security features, notably fluorescent marks visible only under ultraviolet light. This article aims to study the spectroscopic properties of security marks on Costa Rican banknotes to differentiate counterfeit from authentic banknotes and to establish properties useful for quality control processes. Therefore, fluorescence and infrared spectroscopy techniques were applied to key areas of the banknotes to identify excitation, emission, and absorbance maxima. Results showed similar fluorescent emission patterns across different denominations, although variations in intensity were observed in different areas of the same banknote. Additionally, the identified characteristics of the banknote substrate were consistent with the specified material. This analysis contributes to improving the detection of counterfeit banknotes and authentication methods, as well as to establishing a relevant line of research at the national level. |
| Země: | Portal de Revistas TEC |
| Instituce: | Instituto Tecnológico de Costa Rica |
| Repositorio: | Portal de Revistas TEC |
| Jazyk: | Español |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/7860 |
| On-line přístup: | https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7860 |
| Klíčové slovo: | Comparative analysis fluorescence money physical property security spectroscopy ultraviolet radiation Análisis comparativo dinero espectroscopía fluorescencia propiedad física radiación ultravioleta seguridad |