Confocal Raman Microspectroscopy: A Non-Invasive Approach for in-Depth Analyses of Polymer Substrates
We present a simple approach that avoids the problem of coupling fluid-sample interaction in confocal Raman depth-profiling with immersion objectives. We use a thin protective medium (polyethylene film) that preserves the sample from direct contact with the coupling fluid, and that can be readily at...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/66218 |
| Acceso en línea: | http://hdl.handle.net/11336/66218 |
| Access Level: | acceso abierto |
| Palabra clave: | Confocal Raman Depth Profiling Polymer Films Immersion Objectives https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
| Sumario: | We present a simple approach that avoids the problem of coupling fluid-sample interaction in confocal Raman depth-profiling with immersion objectives. We use a thin protective medium (polyethylene film) that preserves the sample from direct contact with the coupling fluid, and that can be readily attached/de-attached from the sample surface by applying a small difference of pressure. The strategy was tested performing confocal Raman depth profiling studies on a series of transparent substrates (polypropylene films; 25, 44 and 60 m nominal thickness) and comparing the results with those obtained with conventional approaches. It is shown that the strategy recovers very well all the film features, preserving at the same time a good depth resolution and optical throughput. |
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