Scanning Electrochemical Microscopy with Simultaneous Independent Topography

James, Patrick; Garfias-Mesias, L.F.; Moyer, Patrick J.

doi:10.1149/1.1838417

Cited by 112 publications

(72 citation statements)

References 8 publications

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“…It can hence detect complete diffusion profiles in the surroundings of sources or sinks of redox-active species (Nebel et al 2010). In particular, coupling SECM with scanning probe techniques, such as atomic force microscopy (AFM) (Macpherson et al 1996) and scanning ion conductance microscopy (SICM) (Comstock et al 2010), shear force (Ludwig et al 1995;Ballesteros Katemann et al 2003b;James et al 1998;Ballesteros Katemann et al 2003a) and impedance-based techniques, (Alpuche-Aviles, Wipf 2001) as well as led to efficient strategies to control the tip-to-sample separation. In the combined technique of AFM-SECM, AFM tip is used as a working electrode and as the force sensor at the same time (Eckhard et al 2007;Kranz, Wiedemair 2008).…”

Section: Positioning Of the Probe Electrodementioning

confidence: 99%

Positioning and control of scanning electrochemical microscopy / Skenuojančiojo elektrocheminio mikroskopo pozicionavimas ir valdymas

Morkvėnaitė-Vilkončienė

Petkevičius

Keraitė

et al. 2017

Science - Future of Lithuania

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Positioning problems of scanning electrochemical microscopy (SECM) are very important by means of living cells damaging by moving ultramicroelectrode (UME). The working principle and operating modes of SECM are introduced. Investigation of redox activity of living cells are outlined. Problems, which arise in investigations of living cells by constant distance and constant height modes are discussed. Technical challenges and advances in application of SECM in living cell investigations are provided.

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Section: Positioning Of the Probe Electrodementioning

confidence: 99%

Positioning and control of scanning electrochemical microscopy / Skenuojančiojo elektrocheminio mikroskopo pozicionavimas ir valdymas

Morkvėnaitė-Vilkončienė

Petkevičius

Keraitė

et al. 2017

Science - Future of Lithuania

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“…An alternative method combining the shear force mode based on a tuning fork technique with SECM for current independent positioning of ber-shaped electrodes has been described in the literature. [91][92][93][94] In these contributions, the SECM tip is attached to a tuning fork resonance detection system of a commercially available NSOM. The UME is attached to the leg of a tuning fork driven by a piezoelectric tube.…”

Section: Positioning Of Electrochemical Microbiosensors With the Use mentioning

confidence: 99%

Scanning Probe Microscopy with Integrated Biosensors

Kueng¹,

Kranz²,

Mizaikoff³

2003

Sen Lett

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Sensor devices including biosensors are attracting considerable interest for molecule-speci c measurements with high sensitivity in a variety of applications ranging from clinical and pharmaceutical analysis to industrial process monitoring and environmental surveillance applications. A biosensor is composed of two main components: (i) a sensing interface, which speci cally interacts with analyte molecules, creating a change in physical or chemical parameters (e.g., pH, redox state, temperature, charge, refractive index, etc.) and (ii) a transducer, which converts this information into a quanti able read-out signal. Most commonly, electrochemical, optical, mass sensitive, and thermosensitive transducers are applied for biosensing platforms. 1 Per its de nition, the biological recognition element is in direct contact with the transducer surface. Following transduction, the signal is typically ltered, ampli ed, recorded, or transmitted by a read-out system, resulting in a

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“…Shear force control for SECM (SF‐SECM) is one of the technologies that has been proposed for positioning a microelectrode at a defined distance from a sample independently from the electrochemical measurement . Determination of local pH changes in shear force‐based SECM have been performed either with iridium oxide based pH‐sensor or membrane‐based ion‐selective electrodes .…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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1IntroductionIn order to enhance the corrosion resistance of aluminium alloys [1] used in the aircraft industry,amulti-layer coatings ystem is formed on the metallic surface.T he first step generally consists in ana nodizing process performed in an acidic electrolyte such as sulphuric acid [2,3].T he resulting anodizedl ayer is constituted by an etwork of nanosized pores. Then this porous anodized layer is sealed in as olution containingc ompounds acting as corrosion inhibitors.C hromate is the most efficient one thanks to as pecific property of corrosion self-healing [4][5][6].H owever,d ue to its carcinogenic toxicity [7],c hromate should be banned from 2017 in the European Union.R ecently,n ew sealing solutions containing chromium(III) and zirconium(IV)s pecies have been developed and seem to be an interesting alternativet ou sual chromates [8][9][10].Nevertheless,t he efficiencyo ft he sealing processes mainly depends on the surface reactivity of the nanoporous oxide structureo nt he different anodized aluminium alloys.I nt his framework, the purpose of this work is to in-situ determine the time course of the pH change in the sealing solution, near the surface of the nanoporousa nodized structure formed on 7175 aluminium alloy.Scanninge lectrochemicalm icroscopy (SECM) was chosen here to monitor the pH at this interface using ap Hm icroelectrode.W hile SECM is historically based on monitoring the amperometric response of microelectrode [11],p otentiometric probes have rapidly been used for monitoring pH or metalc ation concentration at inter-faces [12][13][14] and applied to the analysis of metal surface treatment [15] and corrosion [14,[16][17][18][19][20]. In contrast to amperometric probes,m ost potentiometric probesc annot be positioned accurately in solution at ac ontrolled distance from the interface to be analyzed [ 21,22].I nt he present work, an additional difficulty is the positioning of the pH sensitive electrode with asufficient accuracy in air before the solutioni si ntroduced in the electrochemical cell. In this specific case, neither potentiometric nor amperometric response of microelectrode can be usedt op osition it near to the aluminium alloy surface.Shear force controlf or SECM (SF-SECM) is one of the technologies that has been proposedf or positioning am icroelectrode at ad efined distance from as ample independently from the electrochemical measurement [23][24][25].D etermination of local pH changes in shear forcebased SECM have been performede ither with iridium oxide based pH-sensor [17,20] or membrane-based ionselective electrodes [22].I nc orrosion studies,s hear force Abstract:S hear force-based scanning electrochemical microscopy is applied for pH monitoring during asealing reaction at the interface between anodized 7175 aluminium alloy and as olution containing Cr(III) and Zr(IV) species.p Hm easurement is carriedo ut with the electrode positioned near enough to the surface to be in the diffusion zone of the liquid/solid interface,i nt he reach of the surface-generated pH modulati...

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Scanning Electrochemical Microscopy with Simultaneous Independent Topography

Cited by 112 publications

References 8 publications

Positioning and control of scanning electrochemical microscopy / Skenuojančiojo elektrocheminio mikroskopo pozicionavimas ir valdymas

Positioning and control of scanning electrochemical microscopy / Skenuojančiojo elektrocheminio mikroskopo pozicionavimas ir valdymas

Scanning Probe Microscopy with Integrated Biosensors

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

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