| 影响真空镀膜显现手印效果的因素分析 |
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| 引用本文： | 李孝君,刘丹,王鸿飞,刘坤明. 影响真空镀膜显现手印效果的因素分析[J]. 中国司法鉴定, 2012, 0(2): 48-51,68 |
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| 作者姓名： | 李孝君 刘丹 王鸿飞 刘坤明 |
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| 作者单位： | 1. 公安部物证鉴定中心,北京,100038
2. 中国人民公安大学,北京,100038 |
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| 基金项目： | 公安部应用创新计划项目(2009YYCXGAES130) |
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| 摘 要： | 目的考查真空镀膜技术在手印显现方面的应用。方法从影响真空镀膜法显现手印的因素展开,重点分析了喷镀距离、金的用量、客体悬挂角度、锌的蒸发电流和时间等对手印显现的影响。结果条件优化后可以增强手印纹线的立体感,改善金膜、锌膜在手印纹线和客体背景的分布情况,使显出的手印纹线反差明显。结论确定真空镀膜显现常见非渗透性客体上汗潜手印的最佳操作条件。
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| 关 键 词： | 真空镀膜 手印显现 条件优化 |
Factors Affecting the Development of Latent Fingerprints by Vacuum Metal Deposition |
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| LI Xiao-jun , LIU Dan , WANG Hong-fei , LIU Kun-ming. Factors Affecting the Development of Latent Fingerprints by Vacuum Metal Deposition[J]. Chinese Journal of Forensic Sciences, 2012, 0(2): 48-51,68 |
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| Authors: | LI Xiao-jun LIU Dan WANG Hong-fei LIU Kun-ming |
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| Affiliation: | 1.Institute of Forensic Science,Ministry of Public Security,Beijing 100038,China; 2.Chinese People’s Public Security University,Beijing 100038,China) |
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| Abstract: | Objective The application of vacuum metal deposition in the development of latent fingerprints was investigated.Methods Factors affecting the developing result,including the spraying distance,the amount of gold,the hanging position of the objects,the current and time of the zinc evaporation were studied.Results With optimized conditions,the three-dimensional ridges were enhanced,and the distribution of gold and zinc film between hand ridges and background were improved,which increased the contrast of the latent fingerprints.Conclusion The best conditions to develop latent fingerprints by vacuum metal deposition are determined. |
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| Keywords: | vacuum metal deposition development of latent fingerprint optimization |
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