Electrochemical-microscopy analysis of bio-functionalized diamond surfaces

2007 ◽  
Vol 1039 ◽  
Author(s):  
Hiroshi Uetsuka ◽  
Nianjun Yang ◽  
Norio Tokuda ◽  
Christoph E. Nebel
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Diamond Surface ◽  
Dna Sensors ◽  
Diamond Surfaces ◽  
Close Vicinity ◽  
Diamond Electrode ◽  
Microscopy Analysis ◽  
Repulsive Forces ◽  
Dna Density ◽  
Electrochemical Microscopy

AbstractDNA sensors fabricated on single-crystalline B-doped diamond (SBDD) electrodes were characterized by scanning electrochemical microscopy (SECM). These experiments show that circular arranged DNA sensors of typically 2 mm diameter show some spatial variations in electrochemical response. The variation of the diamond electrode with respect to DNA bonding is electrochemically characterized and discussed in the context of ion attraction/repulsion by the negatively charged backbones of DNA and the negatively charged diamond surface. Our results show that repulsive forces affect the mediator propagation of Fe(CN)64- in the close vicinity of the DNA layer which can be used to investigate DNA density variations on sensor areas.

scholarly journals Microstamped Petri Dishes for Scanning Electrochemical Microscopy Analysis of Arrays of Microtissues

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e93618 ◽  
Author(s):  
Adithya Sridhar ◽  
Hans L. de Boer ◽  
Albert van den Berg ◽  
Séverine Le Gac
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Microscopy Analysis ◽  
Petri Dishes ◽  
Electrochemical Microscopy

scholarly journals Communication—Scanning Electrochemical Microscopy Analysis of Interleukin-6 in Oral Cancer

2020 ◽  
Vol 9 (11) ◽  
pp. 115028
Author(s):  
Yen-Tzu Lin ◽  
Anant Preet ◽  
Yi-Pin Chiu ◽  
Bak-Sau Yip ◽  
Hubert H. Girault ◽  
...  
Keyword(s):  
Oral Cancer ◽  
Interleukin 6 ◽  
Scanning Electrochemical Microscopy ◽  
Microscopy Analysis ◽  
Electrochemical Microscopy

scholarly journals Use of Amperometric and Potentiometric Probes in Scanning Electrochemical Microscopy for the Spatially-Resolved Monitoring of Severe Localized Corrosion Sites on Aluminum Alloy 2098-T351

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1132 ◽  
Author(s):  
Rejane M. P. da Silva ◽  
Javier Izquierdo ◽  
Mariana X. Milagre ◽  
Abenchara M. Betancor-Abreu ◽  
Isolda Costa ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Oxygen Depletion ◽  
Localized Corrosion ◽  
Alloy Surface ◽  
Al Alloy ◽  
Spatially Resolved ◽  
Lower Oxygen ◽  
Local Ph ◽  
Electrochemical Microscopy

Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric and potentiometric operation modes, in order to address the responsiveness of the probes for the characterization of this galvanic pair system. Next, these sensing probes were employed to characterize the 2098-T351 alloy surface immersed in a saline aqueous solution at ambient temperature. The distribution of reactive sites and the local pH changes associated with severe localized corrosion (SLC) on the alloy surface were imaged and subsequently studied. Higher hydrogen evolution, lower oxygen depletion and acidification occurred at the SLC sites developed on the 2098-T351 Al-alloy.

Local electrochemical activity of transition metal dichalcogenides and their heterojunctions on 3D-printed nanocarbon surfaces

Nanoscale ◽  
2021 ◽  
Author(s):  
Katarina A. Novčić ◽  
Christian Iffelsberger ◽  
Siowwoon Ng ◽  
Martin Pumera
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Transition Metal Dichalcogenides ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Activity ◽  
Thermally Activated ◽  
Metal Dichalcogenides ◽  
3D Printed ◽  
Electrochemical Microscopy

MoS2 and WS2 and their heterojunctions are used to modify thermally activated 3D-printed nanocarbon structures. Herein, the local electrochemical performance for HER of the modified structures is demonstrated by scanning electrochemical microscopy.

scholarly journals Simultaneous Intelligent Imaging of Nanoscale Reactivity and Topography by Scanning Electrochemical Microscopy

2021 ◽  
Author(s):  
Dylan T. Jantz ◽  
Ryan J. Balla ◽  
Siao-Han Huang ◽  
Niraja Kurapati ◽  
Shigeru Amemiya ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Electrochemical Microscopy

scholarly journals Biological Scanning Electrochemical Microscopy and Its Application to Live Cell Studies

2011 ◽  
Vol 83 (5) ◽  
pp. 1485-1492 ◽  
Author(s):  
Isabelle Beaulieu ◽  
Sabine Kuss ◽  
Janine Mauzeroll ◽  
Matthias Geissler
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Live Cell ◽  
Electrochemical Microscopy
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