Application of absorption of infra-red radiation and reflection spectra to distinguish different inks of same color in alteration

Authors

  • Roshan Giri National Forensic Science Laboratory, Khumaltar, Lalitpur, Nepal
  • Shanker Prasad Chimouriya Department of Natural Sciences (Physics), Kathmandu University, Kavre, Nepal
  • Bal Ram Ghimire Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal

DOI:

https://doi.org/10.3126/bibechana.v19i1-2.46380

Keywords:

non-destructive, absorption, spectra, alteration

Abstract

The main aim of this study is to introduce non-destructive method to distinguish different types of ink of same color. In our daily life, we face many problems of alteration of genuine documents. Such alteration is done by using same color of ink as used in the document. It is not possible to differentiate the altered part by our naked eyes. There are many methods, destructive as well as non-destructive methods, to solve the problem of alteration. We have discussed the non-destructive method using Video Spectral Comparator (VSC)-6000. Analysis is carried out with application of infra-red (IR) radiation of different wavelength and reflection spectra to reach the conclusion. Absorption of infra-red (IR) radiation is found very effective whereas use of reflection spectra is totally failed in this experiment.

BIBECHANA 19  (2022) 34-39

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Published

2022-09-12

How to Cite

Giri, R., Chimouriya, S. P., & Ghimire, B. R. (2022). Application of absorption of infra-red radiation and reflection spectra to distinguish different inks of same color in alteration. BIBECHANA, 19(1-2), 34–39. https://doi.org/10.3126/bibechana.v19i1-2.46380

Issue

Vol. 19 No. 1-2 (2022)

Section

Research Articles

License

Copyright (c) 2022 Roshan Giri, Shanker Prasad Chimouriya, Bal Ram Ghimire

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.