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| 1 | 激光诱导干液滴增强拉曼及应用研究显示文摘拉曼在物质检测方面的应用越来越广泛,其中SERS增强拉曼为检测液体中的痕量物质提供了一种较为稳定的方法。本实验将包含增强粒子和具有拉曼活性的分析物聚集成液滴状态,并通过激光诱导形成定点增强的干液滴,评估了在此过程中分析物对拉曼信号的响应强度及再现性情况,讨论了在微摩尔和纳摩尔浓度下,该方法定量分析的前景,最后将该方法应用于对染色和田玉的实际鉴别中,成功获取了染料特征峰,实现对天然和田玉与人工染色和田玉的区分。 | 许冰 林君峰 王成云 龚龑 赵迎 谢堂堂 | 2022 | 化学研究与应用2022，34，2： | 0 |
| 2 | Improvement of Raman spectrum uniformity of SERS substrate based on flat electrode显示文摘The distribution of metal nanoparticles on the surface of a surface enhancement Raman scattering(SERS)-active substrate plays a prominent part in not only the enhancement of Raman vibration signal,but also the spectrum uniformity.Here,a facile method to fabricate SERS substrates with excellent homogeneity and low cost was proposed,in which a lyotropic liquid crystal soft template was introduced for the coordinated growth of the silver nanoflowers in the process of electrochemistry deposition.Simulation was carried out to illustrate the dominated influence of the distance of electrodes on the deposited nanoparticle number.Two kinds of conductive materials,silver plate and indium tin oxide(ITO)glass,were chosen as the anode,while the cathode was fixed as ITO glass.The simulated conjecture on the effect of electrode flatness on the uniformity of deposited nanoparticles in silver is experimentally proved.More importantly,it was demonstrated that with a relatively smooth and flat ITO glass anode,a SERS substrate featuring higher spectrum uniformity could be achieved.This work is of great significance to the actual applications of the SERS substrate for quantitative detection with high sensitivity. | 江志辉 张申 宋从喜 毛红敏 赵鑫 陆焕钧 曹召良 | 2023 | Chinese Optics Letters2023，21，11： | 0 |
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