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随着纳米技术的蓬勃发展,新型的纳米荧光材料已经逐渐被应用于传统的手印显现技术中,并发挥了不可替代的作用。稀土纳米荧光材料因具有发光强度优异、光学性质丰富等特点,能够有效提高手印显现的信号强度,进而增强手印显现的效果。但不容忽视的是,基于稀土纳米荧光材料的手印显现也会在一定程度上引起客体背景荧光的干扰。以YVO4:Eu这种典型的稀土纳米荧光粉末为例,对打印纸张表面的手印进行刷显,并结合荧光光谱对客体背景荧光的干扰进行定量讨论,为实现手印纳米显现的高对比度提供了有益的参考。
With the rapid development of nanotechnology, a new type of nano-fluorescent material has been gradually applied to the traditional fingerprint display technology and played an irreplaceable role. Due to its excellent luminescence intensity and rich optical properties, rare earth nano fluorescent materials can effectively improve the signal intensity of fingerprints and enhance the effect of fingerprints. However, it can not be ignored that the appearance of fingerprints based on rare earth nano-fluorescent materials may also cause interference of guest background fluorescence to a certain extent. Taking YVO4: Eu typical rare-earth nano-phosphor powder as an example, the fingerprints on the surface of printing paper are brushed and quantitatively discussed with the interference of fluorescence spectrum on the background fluorescence of the guest paper, which is helpful to realize the high contrast of the nano-appearance of fingerprints The reference.