双亲性二氧化硅纳米悬浮液显现手印初探

目的 考查制备的双亲性二氧化硅纳米粒子在配制成悬浮液后对非渗透性客体上手印显现的能力。方法 通过调整溶剂类型、二氧化硅纳米粒子浓度、表面活性剂种类、溶液pH值等因素,探索二氧化硅纳米粒子悬浮液显现手印的最佳方法,并应用于手印显现和效果比较。结果 利用优化后的悬浮液浸显一些非渗透性客体表面的汗潜手印,显出的手印纹线流畅、细腻,细节特征清晰,反差明显,与传统的显现方法比较,此法具有明显优势。结论 研究表明,纳米二氧化硅悬浮液是显现手印的一种有效、简便和经济的方法,具有很好的应用前景。

The Study on Fingerprint Development by Amphiphilic Silica Nanoparticle Suspension

Objective To investigate the effects of amphiphilic silica nanoparticle suspension in fingerprints development on non permeable surfaces. Method Factors of the solvent type, concentration of silica nanoparticles, types of surfactants, solution pH, and so on, were tested. The method was applied and effects were compared. Results The developed latent fingerprints had clear details, delicate hand lines and obvious contrast. The method had obvious advantages compared with traditional ones. Conclusion The amphiphilic silica nanoparticle suspension is effective, simple and economic, and has promising application prospect.