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                            Library & Multimedia
 A study of the mid-infrared emissivity of dried blood on fabrics
NCJ Number
              301199
Journal

*Forensic Chemistry* Volume: 19 Dated: 2020
Author(s)
          R. G. Belliveau;
                        et al
Date Published

2020
Annotation
              This study determined the emissivity of nylon, cotton, polyester, and acrylic fabrics coated with dried rat blood in the thermographic infrared region (~8–12 μm wavelength) at 40 °C and at the lowest humidity researchers could attain in the laboratory.
Abstract
              Results show the emissivity of known nylon (ε = 0.87), cotton (ε = 0.88) and polyester (ε = 0.88) fabrics in the study’s laboratory increased by 0.01, 0.01 and 0.03 respectively when coated with dried blood at a concentration of 100 μL of whole blood per 0.9 cm 2 of fabric. An acrylic fabric (ε = 0.82) shows an increase in emissivity of 0.05 under the same conditions. The research team also investigated the change in emissivity of an acrylic fabric sample coated heavily with whole rat blood 8 years previously as a function of humidity and found that its emissivity increased from 0.90 at low humidity to nearly 0.94 at 90-percent humidity. 1 figure (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2011-IJ-CX-K055


  
  
        
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        Multimode Imaging in the Thermal Infrared: Validation for Blood, Extension to Latent Prints
    
  
  
Date Published: January 1, 2020
    
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