Authors
Mohammed Suhail, Gayathri V.
Abstract
Molybdenum disulfide (MoS₂) is one of the most commonly utilized small particle reagents (SPR) for revealing latent fingerprints on wet, non-porous surfaces like glass, metal, steel, aluminum, and plastic. Its high surface concentration, lubricating properties, and strong adhesive qualities with fingerprint residues give MoS₂ a distinct advantage over surfaces that are typically too slippery or reflective to yield results with traditional fingerprint powders. This study focused on developing latent fingerprints from various non-porous surfaces that had been submerged in water. Samples were collected from these surfaces and exposed to environmental conditions. A total of 15 samples were collected to assess the effectiveness of MoS₂ over different time intervals. The objective was to evaluate the performance of MoS₂ in revealing aged fingerprints. Keywords: MoS2, Fingerprint, Non-Porous Surfaces, Ageing Studies, Latent Prints.
Introduction
Fingerprints are one of the most dependable types of personal identification in forensic science since they are unique and remain constant throughout an individual's life (Carter et al., 2020). The identification and development of latent fingerprints is critical in forensic investigations, especially on non-porous surfaces where standard fingerprint powders may be useless (Verma et al., 2021). Molybdenum disulfide (MoS₂) is a well-known small particle reagent (SPR) that has excellent adhesion to fingerprint residues on difficult-to-remove surfaces such as glass, metal, aluminium and plastic (Sodhi and Kaur, 2012). It is lubricating characteristics and high surface concentration make it an excellent choice for creating prints on surfaces that are frequently too reflective or slippery for traditional procedures (Passey et al., 2021). The identification and development of latent fingerprints is critical in forensic investigations, especially on non-porous surfaces where standard fingerprint powders may be useless. Molybdenum disulfide (MoS₂) is a well-known small particle reagent (SPR) that has excellent adhesion to fingerprint residues on difficult-to-remove surfaces such as glass, metal, aluminium and plastic. It is lubricating characteristics and high surface concentration make it an excellent choice for creating prints on surfaces that are frequently too reflective or slippery for traditional procedures.
Recently, Molybdenum Disulphide (MoS₂) has received interest for its possible use in forensic examination of old latent fingerprints. This substance is a transition metal dichalcogenide (TMD) with special features that make it extremely successful in detecting latent fingerprints, even ones that have aged and deteriorated (Singh, 2022). MoS₂ may absorb fingerprint remnants and interact with oils and perspiration, improving the contrast of fingerprint ridges under certain light sources (Zhang et al., 2019). This study examines how MoS₂ may help in developing latent fingerprints under different environmental circumstances, such as water. Fingerprint samples obtained from various non-porous surfaces at different time intervals were analyzed (Sahani et al., 2020).
References
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How to cite this article?
| APA Style | Suhail, Mohammed. & V, Gayathri. (2025). A Preliminary Study on Kannada Handwriting Characteristics Amongst Karnataka Population. Academic Journal of Forensic Sciences, 08(01), 14-18. |
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