| Abstract |
This research mentions a developed application for detecting latent fingerprints
on non-porous surface materials with nanomaterial carbon dots (CDs) synthesized from
ground coffee by a hydrothermal process, and the obtained CDs are doped with Luminol
(N-CDs) to increase luminescence. The objective of this study is to observe the
characteristics of latent fingerprints on non-porous surface materials by using
nanomaterial carbon dots (CDs) for forensic utilization. N-CDs were synthesized by
using 5 grams of ground coffee and 0.1 grams of Luminol, with the optimum conditions
being hydrothermal at a temperature of 180 oC for 6 hours, respectively. After being
synthesized, the N-CDs were centrifuged to obtain only part of the liquid; that is, the
N-CDs were stirred with cassava powder to form a powder for latent fingerprint
detection. The researcher tested the quality of CDs and N-CDs by fluorescence, UV
visible absorption, and FTIR. This research found that N-CDs had luminescence more
than 2.5 times higher than standard CDs when tested on non-porous surfaces such as
aluminum, glass, steel, and stainless steel. It can detect latent fingerprints and
luminescent blue light in UV lamps at 395 nm,so the N-CDs synthesized by the
researchers can be used at the crime scene for the detection of latent fingerprints. |
Publication
Journal Publication
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