光学精密工程2024，Vol.32Issue(10)：1528-1537,10.DOI:10.37188/OPE.20243210.1528
微流体压力驱动的扫描电化学池显微镜长时间稳定成像
Study on long-term and stable imaging approach of SECCM using microfluid pressure drive
摘要
Abstract
To enhance the imaging capability(achieve long-term and stable imaging)and avoid the evapo-ration and crystallization of micro-droplets at the probe tip in the scanning electrochemical cell microscopy(SECCM),a scanning electrochemical imaging system was constructed and microfluidic pressure-driven was used in its nanopipette probe end.The new system has advantages in terms of electrochemical imag-ing especially for the complex sample surface.The compensation of micro-droplet flow rate at the opening of the probe tip was studied.The research related reliability of synchronous electrochemical active and sur-face topography imaging also was conducted.Firstly,a SECCM imaging system with a microfluidic pres-sure-driven was constructed.Then,a probe detection-based numerical model that use microfluidic pres-sure-driven pipette was established,and the relationship between the back pressure and the fluid flow rate at the back and tip of the probe was studied.Furthermore,with the theoretical model analysis,the novel microfluidic driving method was experimentally tested for its ability to synchronously image the high-reso-lution topography and electrochemical activity of carbon electrode materials and aluminum alloy materials with large surface morphology characteristics.The experimental results indicate that the new method can achieve long-term and stable electrochemical imaging on the surface of hard materials(with sample surface height fluctuations greater than 20 times the probe opening diameter).The development of the new sys-tem will provide researchers with powerful tools for studying material electrochemistry and metal material corrosion.关键词
扫描电化学池显微镜/局部高分辨率/循环伏安测量/形貌/电化学活性Key words
scanning electrochemical cell microscopy/localized and high-resolution/cyclic voltammetry/topography/electrochemical activity分类
机械工程引用本文复制引用
王志武,庄健,宁少慧,程磊,郑强强..微流体压力驱动的扫描电化学池显微镜长时间稳定成像[J].光学精密工程,2024,32(10):1528-1537,10.基金项目
国家自然科学基金面上项目(No.52175515) （No.52175515）
山西省基础研究计划青年项目(No.202203021222187) （No.202203021222187）
山西省优秀博士毕业生来晋工作奖励资助基金项目(No.20232068) （No.20232068）
太原科技大学科研启动基金项目(No.20222089) （No.20222089）
