Local Evolution of pH with Time Determined by Shear Force-based Scanning Electrochemical Microscopy: Surface Reactivity of Anodized Aluminium

2016 ◽  
Vol 28 (10) ◽  
pp. 2466-2471 ◽  
Author(s):  
Mathieu Etienne ◽  
Emmanuel Rocca ◽  
Najat Chahboun ◽  
Delphine Veys-Renaux
Keyword(s):  
Shear Force ◽  
Scanning Electrochemical Microscopy ◽  
Surface Reactivity ◽  
Electrochemical Microscopy

Feedback-Independent Pt Nanoelectrodes for Shear Force-Based Constant-Distance Mode Scanning Electrochemical Microscopy

2006 ◽  
Vol 78 (20) ◽  
pp. 7317-7324 ◽  
Author(s):  
Mathieu Etienne ◽  
Emily C. Anderson ◽  
Stephanie R. Evans ◽  
Wolfgang Schuhmann ◽  
Ingrid Fritsch
Keyword(s):  
Shear Force ◽  
Scanning Electrochemical Microscopy ◽  
Constant Distance ◽  
Electrochemical Microscopy

Electrode Fabrication for Scanning Electrochemical Microscopy and Shear Force Imaging

2016 ◽  
Author(s):  
Robert Northcutt ◽  
Jacob Maddox ◽  
Vishnu-Baba Sundaresan
Keyword(s):  
High Resolution ◽  
Shear Force ◽  
Signal To Noise Ratio ◽  
Measurement Techniques ◽  
Scanning Electrochemical Microscopy ◽  
Fabrication Process ◽  
Signal To Noise ◽  
Measurement Systems ◽  
Noise Ratio ◽  
Electrochemical Microscopy

The development of novel characterization techniques is critical for understanding the fundamentals of material systems. Bioinspired systems are regularly implemented but poorly defined through quantitative measurement. In an effort to specify the coupling between multiple domains seen in biologically inspired systems, high resolution measurement systems capable of simultaneously measuring various phenomena such as electrical, chemical, mechanical, or optical signals is required. Scanning electrochemical microscopy (SECM) and shear-force (SF) imaging are nanoscale measurement techniques which examine the electrochemical behavior at a liquid-solid or liquid-liquid interface and simultaneously probe morphological features. It is therefore a suitable measurement technique for understanding biological phenomena. SF imaging is a high resolution technique, allowing for nanoscale measurement of extensional actuation in materials with high signal to noise ratio. The sensing capabilities of SECM-SF techniques are dependent on the characteristics of the micro-scale electrodes (ultramicroelectrodes or UMEs) used to investigate surfaces. Current limitations to this technique are due to the fabrication process which introduces structural damping, reducing the signal produced. Additionally, despite the high cost of materials and processing, contemporary processes only produce a 10% yield. This article demonstrates a UME fabrication process with a 60% yield as well as improved amplitude (250% increase) and sensitivity (210% increase) during SF imaging. This process is expected to improve the signal to noise ratio of SF-based measurement systems. With these improvements, SECM-SF could become a more suitable technique for measuring cell or tissue activity, corrosion of materials, or coupled mechanics of synthetic faradaic materials.

Fabrication of a Shear Force-based Ion-selective Capillary Probe for Scanning Electrochemical Microscopy

2008 ◽  
Vol 37 (4) ◽  
pp. 392-393 ◽  
Author(s):  
Hiroshi Yamada ◽  
Yuuya Ikuta ◽  
Tohru Koike ◽  
Tomokazu Matsue
Keyword(s):  
Shear Force ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Microscopy

scholarly journals Understanding surface reactivity of Si electrodes in Li-ion batteries by in operando scanning electrochemical microscopy

2016 ◽  
Vol 52 (41) ◽  
pp. 6825-6828 ◽  
Author(s):  
E. Ventosa ◽  
P. Wilde ◽  
A.-H. Zinn ◽  
M. Trautmann ◽  
A. Ludwig ◽  
...  
Keyword(s):  
Electrode Surface ◽  
Scanning Electrochemical Microscopy ◽  
Surface Reactivity ◽  
Li Ion Batteries ◽  
Li Ion ◽  
In Operando ◽  
Electrochemical Microscopy

In operando SECM is employed to monitor the evolution of the electrically insulating character of a Si electrode surface during (de-)lithiation.

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