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Fang X, Chen J, Jiang C, Mei Z, Yi X, Gao Y, Hui G, Lou X. Design of electrochemical sensor array utilizing metal materials and applications in sugar content analysis from mixtures. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2021. [DOI: 10.1080/10942912.2021.1947314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xudong Fang
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Jiaqi Chen
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Chenhao Jiang
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Zhenghao Mei
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Xiaomei Yi
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Yuanyuan Gao
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Guohua Hui
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Xiongwei Lou
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
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Morkvenaite-Vilkonciene I, Ramanaviciene A, Genys P, Ramanavicius A. Evaluation of Enzymatic Kinetics of GOx-based Electrodes by Scanning Electrochemical Microscopy at Redox Competition Mode. ELECTROANAL 2017. [DOI: 10.1002/elan.201700022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Inga Morkvenaite-Vilkonciene
- Vilnius University; Faculty of Chemistry and Geosciences, Department of Physical Chemistry; Vilnius Lithuania
- Vilnius Gediminas Technical University; Department of Mechatronics and Robotics; Vilnius Lithuania
| | - Almira Ramanaviciene
- Vilnius University; Faculty of Chemistry and Geosciences, Department of Analytical and Environmental Chemistry; Vilnius Lithuania
| | - Povilas Genys
- Vilnius University; Faculty of Chemistry and Geosciences, Department of Physical Chemistry; Vilnius Lithuania
| | - Arunas Ramanavicius
- Vilnius University; Faculty of Chemistry and Geosciences, Department of Physical Chemistry; Vilnius Lithuania
- State Research Institute Center for Physical Sciences and Technology; Laboratory of BioNanoTechnology; Vilnius Lithuania
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Ivanauskas F, Morkvenaite-Vilkonciene I, Astrauskas R, Ramanavicius A. Modelling of Scanning Electrochemical Microscopy at Redox Competition Mode Using Diffusion and Reaction Equations. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.179] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Conzuelo F, Stratmann L, Grützke S, Pingarrón JM, Schuhmann W. Detection and Quantification of Sulfonamide Antibiotic Residues in Milk Using Scanning Electrochemical Microscopy. ELECTROANAL 2014. [DOI: 10.1002/elan.201300577] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rodríguez-López J, Ritzert NL, Mann JA, Tan C, Dichtel WR, Abruña HD. Quantification of the Surface Diffusion of Tripodal Binding Motifs on Graphene Using Scanning Electrochemical Microscopy. J Am Chem Soc 2012; 134:6224-36. [DOI: 10.1021/ja2106724] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joaquín Rodríguez-López
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
| | - Nicole L. Ritzert
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
| | - Jason A. Mann
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
| | - Cen Tan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
| | - William R. Dichtel
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
| | - Héctor D. Abruña
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, United
States
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Liu Y, Gyurcsányi R, Jágerszki G, DeNuzzio J, Lindner E. Microfabricated Amperometric Cells for Multicomponent Analysis. ELECTROANAL 2009. [DOI: 10.1002/elan.200904614] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Oliveira EM, Beyer S, Heinze J. SECM characterization of immobilised enzymes by self-assembled monolayers on titanium dioxide surfaces. Bioelectrochemistry 2007; 71:186-91. [PMID: 17573245 DOI: 10.1016/j.bioelechem.2007.04.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Revised: 03/08/2007] [Accepted: 04/24/2007] [Indexed: 11/22/2022]
Abstract
SECM in generator-collector mode was used to detect the presence of immobilised enzymes on titanium dioxide layers which were chemically or electrochemically generated with possible application as chemical sensors and biosensors. Glucose oxidase (GOx) and horseradish peroxidase (HRP) were immobilised by SAM generation using aminopropyltriethoxysilane (APTES) and ascorbic acid. The enzymes were successfully immobilised on two different TiO(2) surfaces. A simple test of durability of the system was made and a model of SAM organisation is presented.
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Affiliation(s)
- E M Oliveira
- Albert-Ludwigs Universität, Freiburger Materialforschungszentrum--FMF, Stefan-Meier Strasse 21, 79104 Freiburg, Germany
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Detection of proteins on membranes and in microchannels using copper staining combined with scanning electrochemical microscopy. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2006.06.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhu R, Ding Z. Enhancing image quality of scanning electrochemical microscopy by improved probe fabrication and displacement. CAN J CHEM 2005. [DOI: 10.1139/v05-189] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Scanning electrochemical microscopy (SECM) is a powerful tool for its wide applications in determining charge transfer kinetics, imaging chemical reactions and topography, as well as fabricating microstructures at various interfaces and (or) surfaces. Imaging applications, in particular, rely on the natures of SECM probes and the scanning systems to move them in the vicinity of interfaces. While progress has been made in new approaches to tip fabrication, there are few reports on the improvement of the tip positioning system to enhance SECM image quality. We have recently built an advanced SECM setup using a closed-loop scanning system and improved probe fabrication and characterization procedures. Here we will describe this development, as well as the application of these techniques to greatly improve the quality of SECM images. Video micrograph, cyclic voltammograms, and SECM approach curves (current vs. tipsubstrate distance) were chosen to characterize probe quality and to determine the ratio of electrode diameter to glass sheath diameter. The SECM setup has a resolution and repeatability of 20 nm in three dimensions (x, y, and z) and can locate and relocate areas of interest precisely after a coarse image. Interdigitated electrode arrays of platinum and gold were first imaged. Image resolution revealed by sharpness of Pt band edges was enhanced by using a 2 µm diameter electrode. Pt or Au band height was found to be around 80200 nm by fitting the approach curves to the theoretical ones. Imaging conditions such as delay time for a large step size between two succeeding data points were optimized. To test its thermal and temporal stability, the system was then used to image letters, which were printed on a transparency with font bold Courier New and font size 2. Minor drifts were found during the image process up to the experimental length of 8 h and 45 min. Letter thickness was found to be 1.01.2 µm. A silicon substrate with an array of square pits spaced apart on 10 µm centers was finally imaged. Good quality images were obtained at various tipsubstrate distances even though the squares were just as small, if not smaller, than the tip. The samples were also imaged by AFM for comparison.Key words: scanning electrochemical microscopy, atomic force microscopy, microelectrode fabrication, closed-loop imaging, probe approach curve.
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