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Demonstrates effective fingerprint detection in forensic science using hybrid materials, suggesting improved techniques for latent print analysis.
High Resolution Image Download MS PowerPoint Slide The development of novel materials and techniques for fingerprint detection remains a key challenge in forensic science, particularly for latent prints deposited on complex, multicolored, or low-contrast surfaces. Conventional detection methods often face limitations in sensitivity, selectivity, and environmental compatibility, prompting a search for innovative and sustainable alternatives. In this work, we report the synthesis and application of an SBA-15/PhCN hybrid system as an efficient and eco-friendly material for the visible-light detection of both fresh and latent fingerprints on various substrates. The combination of mesoporous silica SBA-15, characterized by its high surface area and tunable pore architecture, with the photoreactive organic compound phenyl-doped carbon nitride (PhCN) results in a hybrid exhibiting enhanced optical response and strong interaction with fingerprint residues under visible illumination. The hybrid material was synthesized through a facile and reproducible route, thoroughly characterized by spectroscopic and microscopic analyses, and applied via a conventional powder dusting method. Its performance was systematically evaluated on glass, metal, and plastic substrates, demonstrating a high contrast and excellent ridge definition. The SBA-15/PhCN hybrid exhibited strong visible-light activity and high selectivity toward fingerprint residues, confirming its potential as a sustainable, noninvasive, and cost-effective material for advanced forensic investigations.
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Rusta et al. (2026) studied this question.
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