Yao Kunman,Li Zeying,Wu Xiaolin,et al.Comprehensive chemical experiment on electrochemical deposition of copper to display potential fingerprints[J].Plating & Finishing,2024,(1):105-111.[doi:10.3969/j.issn.1001-3849.2024.01.016]
电化学沉积铜显现潜在手印的综合化学实验
- Title:
- Comprehensive chemical experiment on electrochemical deposition of copper to display potential fingerprints
- Keywords:
- experimental teaching ; electrochemical ; fingerprint visible ; criminal technology ; innova tive thinking
- 分类号:
- G642
- 文献标志码:
- A
- 摘要:
- 设计了一种利用手印油脂的绝缘性，使用电化学沉积法显现金属表面上潜在手印的综合化学实验。通过控制变量法探究电流密度和电荷量对手印显现效果的影响，使用 Image J 软件测出纹线的灰度值分布用于评价显现质量，利用扫描电子显微镜和能量色散 X 射线光谱分析沉积层的结构和元素组成。该实验采用以电化学专业知识为基础的研究型教学模式，致力于培养学生的科学思维和科研能力。教学过程中以学生为中心，教师提供指导和点拨，调动学生的实验积极性，发掘学生的创新潜力，培养高素质的刑事科学技术人才，实现科技兴警。
- Abstract:
- ： A comprehensive chemical experiment was designed to use the electrochemical deposition to reveal potential fingerprints on metal surfaces by exploiting the insulating properties of handprint grease. The effect of current density and charge on the appearance of fingerprints was investigated by the control variate method ， the distribution of the gray value of the lines was measured using Image J software to evaluate the appearance quality. The structure and elemental composition of the deposited layers were analyzed using scanning electron microscopy and energy dispersive X-ray spectroscopy. This experiment adopts a research-oriented teaching model based on electrochemical professional knowledge ， committed to cultivating students’ scientific thinking and research abilities. In the teaching process ， a student-centered approach with guidance from teachers is adopted to stimulate students’ experimental enthusiasm ， explore their innovative potential ， cultivate high-quality criminal science and technology talents ， and achieve the goal of promoting the police through science and technology.
参考文献/References:
[1] 李海英 . 基于实战背景的公安院校刑事技术综合实验设计 [J]. 实验室研究与探索 , 2016, 35(3): 177-81, 258.
[2] 王晓宾 , 徐少辉 . 刑事科学技术实验教学中心建设实践 [J]. 实验室研究与探索 , 2019, 38(1): 137-140.
[3] 炼铮 , 朱蒋琪 , 路春清 . 尼罗红显现潜在手印的综合实验教学设计 [J]. 实验技术与管理 , 2021, 38(12): 165-168, 183.
[4] 袁传军 . 碱性染料 - 硅藻土复合粉末制备及用于手印显现的综合化学实验 [J]. 化学教育 ( 中英文 ), 2019, 40(6): 66-70.
[5] 苗荣荣 , 陈佰满 , 赵鸿斌 , 等 . 摩尔电导率测定实验的综合设计及教学模式探索 [J]. 电镀与精饰 , 2022, 44(4): 60-66.
[6] 高吉成 , 李大玉 , 靳惠明 . 工程教育专业认证背景下电镀镍教学探索 [J]. 电镀与精饰 , 2023, 45(3): 110-114.
[7] Yuan C J, Li M, Wang M, et al. Electrochemical development and enhancement of latent fingerprints on stainless steel via electrochromic effect of electrodeposited Co 3 O 4 films[J]. Electrochim Acta, 2021, 370: 137771.
[8] Zhang X S, Zhang K Y, Xiao W, et al. Electrodeposited Ni/phosphors composite coating for latent fingerprints visualization[J]. International Journal of Electrochemical Science, 2019, 14(9): 9058-9068.
[9] 张杰 , 陈煅 , 郭佳瑶 , 等 . COMSOL 有限元分析方法在循环伏安法教学中的应用 [J]. 化学教育 ( 中英文 ), 2019, 40(20): 75-79.
[10] 彭迪 , 张雨嫣 . 基于电化学检测的 " 负像 " 潜手印显影技术研究进展 [J]. 刑事技术 , 2022, 47(3): 227-232.
[11] Faulds H. On the skin-furrows of the hand[J]. Nature, 1880, 22(574): 605.
[12] Choi M J, Mcdonagh A M, Maynard P, et al. Metal-containing nanoparticles and nano-structured particles in fingermark detection[J]. Forensic Science International, 2008, 179(2-3): 87-97.
[13] Xu L R, Zhou Z Y, Zhang C Z, et al. Electrochemiluminescence imaging of latent fingermarks through the immunodetection of secretions in human perspiration[J]. Chemical Communications, 2014, 50(65): 9097-9100.
[14] 汪昌红 , 刘正阳 , 李长明 , 等 . 铜基材料电催化硝酸盐还原研究进展 [J]. 科学通报 , 2021, 66(34): 4411-4424.
[15] Wang Y Q, Lyu S S, Luo J L, et al. Copper vertical micro dendrite fin arrays and their superior boiling heat transfer capability[J]. Applied Surface Science, 2017, 422: 388-393.
[16] Mo D C, Yang S, Luo J L, et al. Enhanced pool boiling performance of a porous honeycomb copper surface with radial diameter gradient[J]. International Journal of Heat and Mass Transfer, 2020, 157: 119867.
[17] Yuan C J, Li M, Wang M, et al. A critical review of fundamentals and applications of electrochemical development and imaging of latent fingerprints[J]. Electrochimca Acta, 2021, 390: 138798.
[18] Zhang M Q, Yu X, Qin G, et al. Latent fingerprint enhancement on conductive substrates using electrodeposition of copper[J]. Science China Chemistry, 2015, 58(7): 1200-1205.
[19] Plowman B J, Jones L A, Bhargava S K. Building with bubbles: the formation of high surface area honeycomb-like films via hydrogen bubble templated electrodeposition[J]. Chemical Communications, 2015, 51(21): 4331-4346.
[20] 彭迪 , 陈黄梓 . 多色荧光碳点应用于潜手印显现的综合创新实验教学设计 [J]. 实验技术与管理 , 2022, 39(7): 196-201.
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备注/Memo
收稿日期： 2023-04-16 修回日期： 2023-05-03 作者简介： 姚坤满（ 1995 ―），男，硕士，助理实验师， email ： yaokm6@mail2.sysu.edu.cn * 通信作者： 莫冬传， email ： modongch@mail.sysu.edu.cn 基金项目： 国家自然科学基金资助项目（ 51876226 ）；广东警官学院 2022 年度科研项目（ 2022SY04 ）?/html>