碳点复合粉末法手印显现技术研究进展  

Research Progress of Fingerprint Development by Carbon Dot Composite Powder Method

作　　者：陈锦峰 孙茜沄 齐思雨 胡定煜 CHEN Jinfeng;SUN Qianyun;QI Siyu;HU Dingyu(School of Graduate,China People’s Police University,LangFang 065000,Hebei,China;School of Criminal Investigation,China People’s Police University,LangFang 065000,Hebei,China)

机构地区：[1]中国人民警察大学研究生院,河北廊坊065000 [2]中国人民警察大学侦查学院,河北廊坊065000

出　　处：《刑事技术》2024年第3期284-289,共6页Forensic Science and Technology

基　　金：河北省高等学校科学技术研究项目(ZC2023113);中国人民警察大学科研重点专项(ZDZX202002);中国人民警察大学研究生院学生科技创新计划项目(yjskc22065)。

摘　　要：手印在刑事侦查和司法鉴定中起着极其重要的作用。碳点因其优良的荧光性能、稳定的化学性能、低廉的成本,在手印显现领域展现出了广阔的应用前景。本文探讨了碳点手印显现技术的荧光机制,比较分析了改善固态碳点粉末聚集淬灭效应的两种应对策略,相比于改变碳点结构或表面修饰方法,将碳点分散到基质材料中更加便捷且稳定;阐述了碳点-无机盐/无机氧化物、碳点-高分子材料、碳点-有机化合物三类碳点复合粉末在手印显现领域的应用进展,对比分析了三类固态碳点粉末在手印显现应用中的适用客体、碳点分布、荧光强度及稳定性、显色效果、制备成本等方面的差异性;指出了碳点手印显现技术研究中需要进一步优化的环节与不足,以期为后续碳点应用于粉末法手印显现技术领域的研究提供参考。Fingerprints play an extremely important role in criminal investigation and forensic identification.Carbon dots have a broad application in the field of fingerprint development,due to their excellent fluorescence properties,stable chemical properties and low cost.In this paper,we demonstrated the fluorescence mechanism of carbon dots fingerprint development technology and analyzed two coping strategies to improve the aggregation quenching effect of solid carbon dots powder.Compared with changing the structure of carbon dots or surface modification methods,it is more convenient and stable to disperse carbon dots into matrix materials.We described the application of carbon dots-inorganic salts/inorganic oxides,carbon dots-polymers and organic compounds in the field of fingerprint development.The application of the three types of carbon dots composite powders was explored in the field of fingerprint development.We compared and analyzed the three types of solid carbon dots powder in the application of fingerprint development application of the object,the distribution of carbon dots,the fluorescence intensity and stability,the effect of the colour development,the cost of preparation and other aspects of the differences.We pointed out that carbon dots fingerprint development technology research needs to be further optimized,with a aim to providing reference for the application of subsequent carbon dots to the field of the fingerprint development technology of the powder method.

关 键 词：手印显现 碳点 荧光机制 复合粉末法 聚集淬灭 

分 类 号：TB44[一般工业技术] D918.91[政治法律—法学]