本发明属于检测技术领域，具体涉及显现多种客体表面指纹且保留dna信息的方法。
The invention belongs to the technical field of detection, in particular to a method for showing fingerprints on various object surfaces and keeping DNA information.
本发明操作简单，用量少，应用范围大，效果好，可显现一些特定客体上的潜指纹。
The invention has easy operation, small using amount, large application range and good effect and can display the laten fingerprints positioned on a plurality of specific objects.
本发明提供一种二色性宾-主起偏振器，其包括取向的聚合的液晶主体和随此取向的二色性客体。
A dichroic guest-host polarizer comprises an oriented polymerized liquid crystal host and aligned therewith a dichroic guest.
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