高能电子束聚焦作用对人体毛发角质层的影响  

Effects of Focused High Energy Electron Beam on the Cuticle of Human Hair

作　　者：宋志豪 李辰睿 Song Zhihao;Li Chenrui(Department of Criminal Science and Technology,Railway Police College,Zhengzhou 450053,China)

机构地区：[1]铁道警察学院刑事科学技术系,河南郑州450053

出　　处：《铁道警察学院学报》2022年第4期98-103,共6页Journal of Railway Police College

基　　金：2021年中央高校基本科研业务经费项目“高能电子束聚焦作用对人体毛发角质层的影响”(2021TJJBKY011)。

摘　　要：通过扫描电镜来探究不同强度高能电子束聚焦作用对毛发角质层的影响,收集并分析扫描电镜记录影像。研究结果表明,当高能电子束聚焦作用超过毛发角质层对其的耐受程度时,毛发角质层会发生明显的非特异性形变,且不同类型的毛发所产生的非特异性形变类型不同。同时得到不同类型的人体毛发所能耐受高能电子束聚焦的最大强度值,终毛的最大扫描电镜观测倍数区间为×700~×800,毳毛的最大扫描电镜观测倍数区间为×1.5 k~×2 k,以期为日后人体毛发的扫描电镜观察提供参考,避免过度的高能电子束聚焦作用而导致的毛发角质层结构的改变,进而影响对其表面形态的观察。Scanning electron microscopy(SEM)is used to observe,collect and record the effects of high energy electron(HEE)beam of different intensity when focusing on the hair cuticle.The research shows that if the intensity of HEE beam exceeds the maximum limit,the hair cuticle will occur obvious non-specific deformation,and the maximum values vary on different types of hair.It also obtains the maximum HEE beam values on human hairs,i.e.700~800 times for terminal hair and 1500~2000 times for vellus hair.It presents a reference to human hair observation by SEM in the future to prevent from destroying the the hair cuticle structure by excessive HEE,and to assure the observation of its surface morphology.

关 键 词：法医物证 毛发 扫描电镜 结构形态 

分 类 号：D919[医药卫生—法医学]