长余辉材料在指纹显现中应用的初步研究

首次用长余辉材料Rt-8c粉显现指纹,基本消除承痕体光学背景干扰。测定了Rt-8c的激发光谱和发射光谱。用长余辉材料Rt-8c粉末显现人民币上的新鲜皮脂腺潜指纹,然后用日光灯激发,指纹于暗室中发出黄绿色荧光。用照相法提取指纹,有效地去除了承痕体光学背景干扰,获得了细节清晰的指纹图像。初步实验表明长余辉材料是一种新型的指纹显现试剂,可望获得更广泛的应用。

Preliminary Study on Application of Long After-Glow Phosphorescent Material in Fingerprint Manifestation

The long after-glow phosphorescent material was first successfully adopted,substantially eliminating the optical background interference,and the stimulating and emission spectra of Rt-8c powder were obtained.Manifested by the long after-glow phosphorescent material Rt-8c powder and stimulated with fluorescent lamp,the fingerprint on the Renminbi note gives out yellowish green in dark,getting clear and detailed fingerprint images in the photograph without medium background.The preliminary experiment shows that more applications are expected for the long after-glow phosphorescent material in fingerprint manifestation development.