摘要
目的建立NaYF4:Er,Yb微粒悬浮液显现手印技术方法并界定适用范围与条件。方法用NaYF4:Er,Yb微粒悬浮液显现瓷砖、玻璃等19种(各50枚)不同客体上皮脂汗手印,并对结果进行分析比较。结果该方法对背景复杂的非渗透性客体上的油汗手印显现良好,其效果优于普通ZnO小颗粒悬浮液。结论该方法操作简便、适用客体广泛、背景干扰少,适合进一步研究推广。
Objective To introduce a new method for latent fingerprints developing by using NaYF4： Er, Yb phosphor suspension, and explore its applicable scope and conditions. Methods The sebaceous fingerprints on non-porous surfaces, including plastic, tile, glass, metal et al. were developed with NaYF4：Er,Yb phosphor suspension. Results The sebaceous fingerprints on non-porous objects with complex background were developed successfully. The effectiveness of NaYF4： Er, Yb was compared with that of traditional Zinc Oxide powder, the results indicated that some benefit of NaYF4：Er, Yb over Zinc Oxide powder for the development of latent fingerprints. Conclusions NaYF4：Er, Yb phosphor suspension is a simple and effective method for fingerprints detection, and has the great potential for development of latent fingerprints.
出处
《刑事技术》
2014年第6期36-38,共3页
Forensic Science and Technology
关键词
上转换
悬浮液
油汗手印
红外
荧光
指纹显现
fingerprint development
up-converter particles
sebaceous fingerprints
fluorescence
