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Latent fingerprint enhancement on conductive substrates using electrodeposition of copper
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  • 作者:Meiqin Zhang ; Xi Yu ; Gang Qin ; Yu Zhu ; Meiling Wang ; Qianhui Wei…
  • 关键词:latent fingerprint visualization ; electrodeposition ; copper thin film ; forensic science ; electrochemistry
  • 刊名:SCIENCE CHINA Chemistry
  • 出版年:2015
  • 出版时间:July 2015
  • 年:2015
  • 卷:58
  • 期:7
  • 页码:1200-1205
  • 全文大小:748 KB
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  • 作者单位:Meiqin Zhang (1)
    Xi Yu (1)
    Gang Qin (1)
    Yu Zhu (1)
    Meiling Wang (1)
    Qianhui Wei (1)
    Yang Zhang (1)
    Xueji Zhang (1)

    1. Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, China
  • 刊物类别:Chemistry and Materials Science
  • 刊物主题:Chemistry
    Chinese Library of Science
    Chemistry
  • 出版者:Science China Press, co-published with Springer
  • ISSN:1869-1870
文摘
We present a novel method for the development of a latent fingerprint by selective electrodeposition of a copper thin film from sulfate solution onto the conductive substrate between fingerprint ridges to generate a negative image of the fingerprint deposit. After optimizing the parameters (deposition time, deposition potential, and copper concentration), the preferential electrodeposition of copper films allowed latent fingerprints on six kinds of conductive surfaces (indium/tin oxide-coated glass, silver sheet, platinum sheet, gold sheet, copper sheet, and a stainless steel coin) to be successfully developed with high resolution. In addition, this technique could also be exploited to visualize latent fingerprints on rough and dirty surfaces. The quality of the developed fingerprints was estimated visually and the morphology of the copper film was characterized by field emission scanning electron microscopy.

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