Abstract
This chapter is a guide to the practices associated with infrared microspectroscopy as applied to single textile fibres rather than an overview of the theory of infrared spectroscopy or Fourier transform techniques. It describes various sources of photometric inaccuracy arising from the specimen itself and from the instrument used with particular reference to infrared microspectroscopical analysis of textile fibres. The combination of refraction, scattering, rapid fluctuations in refractive index across the spectral range and cross-sectional shape of fibres can also have an impact upon spectral data. Fibers with a circular cross-section function like a cylindrical lens of short focal length. Infrared microspectroscopy is a cornerstone technique in forensic fibre comparison. It is a very versatile technique that allows the composition of an entire fibre to be analysed by using transmission measurements or its surface composition to be analysed by using attenuated total reflectance measurements.
| Original language | English |
|---|---|
| Title of host publication | Forensic Examination of Fibres |
| Subtitle of host publication | Third Edition |
| Editors | James Robertson, Claude Roux, Kenneth G Wiggins |
| Place of Publication | Boca Raton |
| Publisher | Taylor & Francis |
| Pages | 245-288 |
| Number of pages | 44 |
| ISBN (Electronic) | 9781315156583 |
| ISBN (Print) | 9781439828649 |
| DOIs | |
| Publication status | Published - 1 Dec 2017 |
Keywords
- infrared microspectroscopy
- single textile fibres
- fibres
- Fourier transform techniques