Next Article in Journal
Investigation of Position Sensing and Energy Harvesting of a Flexible Triboelectric Touch Pad
Previous Article in Journal
Markers of Oxidative Stress in the Exhaled Breath Condensate of Workers Handling Nanocomposites
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Nanomaterials 2018, 8(8), 612; https://doi.org/10.3390/nano8080612

The Recognition of Sweat Latent Fingerprints with Green-Emitting Carbon Dots

1,2,†
,
1,2,†
and
1,2,*
1
School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
2
National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), Wuhan 430074, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 9 July 2018 / Revised: 2 August 2018 / Accepted: 9 August 2018 / Published: 12 August 2018
(This article belongs to the Special Issue Applications of Quantum Dots)
Full-Text   |   PDF [3521 KB, uploaded 20 August 2018]   |  

Abstract

The recognition of fingerprints has played an extremely important role in criminal investigations, due to its uniqueness. This paper reports on the recognition of sweat latent fingerprints using green-emitting, environment-friendly carbon dots prepared with DL-malic acid and ethylenediamine, and the exploration of impacting factors in the development process of fingerprints. The experiments showed that better fingerprint images could be obtained when the latent fingerprints are developed in green-emitting carbon dots with pH 9 for 30 min, at room temperature. The reported method was also effective for latent fingerprints on a variety of substrates, as well as for those water-immersed ones, where the developed fingerprint remained stable after long-term preservation. Furthermore, the fluorescent three-dimensional fingerprint image could provide direct and simple evidence on pressing habits. The objective of this paper was to present this method. The method may help to narrow the range of suspects during criminal investigations and in forensic science. View Full-Text
Keywords: green; carbon dots; sweat latent fingerprints; forensic science green; carbon dots; sweat latent fingerprints; forensic science
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhao, D.; Ma, W.; Xiao, X. The Recognition of Sweat Latent Fingerprints with Green-Emitting Carbon Dots. Nanomaterials 2018, 8, 612.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top