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Scanning electrochemical microscopy applications

Scott, E. R., White, H. S. and Phipps, J. B. lontophoretic transport through porous membranes using scanning electrochemical microscopy Application to in vitro studies of ion fluxes through skin. Anal. Chem. 65 1537-1545, 1993. [Pg.35]

Satpati, A.K. and Bard, A.J. (2012) Preparation and characterization of carbon powder paste ultramicroelectrodes as tips for scanning electrochemical microscopy applications. Anal. Chem., 84, 9498 - 9504. [Pg.418]

The BEM has been applied in scanning electrochemical microscopy applications by Fisher and Denuault [169] to examine the influence of probe and substrate surface topography. In addition, time-dependent phenomena have been assessed in oil droplets [170, 171] and a range of microelectrode geometries using the dual reciprocity method (DRM) [172] closely related to the BEM [173]. [Pg.679]

Bragato, C., Daniele, S., Baldo, M. A., Denuault, G. Oxygen as redox mediator in scanning electrochemical microscopy. Application to the study of localised acid attack of marble. Ann. Chim. 2002, 92, 153. [Pg.449]

Fulian Q, Fisher A C and Denuault G 1999 Applications of the boundary element method in electrochemistry scanning electrochemical microscopy, part 2 J. Phys. Chem. B 103 4393... [Pg.1952]

In scanning electrochemical microscopy (SECM) a microelectrode probe (tip) is used to examine solid-liquid and liquid-liquid interfaces. SECM can provide information about the chemical nature, reactivity, and topography of phase boundaries. The earlier SECM experiments employed microdisk metal electrodes as amperometric probes [29]. This limited the applicability of the SECM to studies of processes involving electroactive (i.e., either oxidizable or reducible) species. One can apply SECM to studies of processes involving electroinactive species by using potentiometric tips [36]. However, potentio-metric tips are suitable only for collection mode measurements, whereas the amperometric feedback mode has been used for most quantitative SECM applications. [Pg.397]

A. J. Bard, E.-R. E. Fan, M. Mirkin, Scanning electrochemical microscopy in Physical Electrochemistry. Principles, Methods, and Applications (Ed. I. Rubinstein), Monographs in Edectroanalyhcal Chemistry and Electrochemistry, Marcel Dekker, New York, 1995, pp. 209-242. [Pg.24]

The preparation and application of SAM systems patterned by STM and their use in catalysis was demonstrated by Wittstock and Schuhmann [123]. The patterning (local desorption) of SAMs from alkane thiols on gold was performed by scanning electrochemical microscopy (SECM), followed by the assembly of an amino-deriva-tized disulfide and coupling of glucose oxidase to form a catalytically active pattern of the enzyme. The enzymatic activity could be monitored/imaged by SECM. [Pg.393]

Barker, A.L., Slevin, C.J., Unwin, P.R. and Zhang, J. (2001) Scanning electrochemical microscopy as a local probe of chemical processes at liquid interfaces. Chapter 12 in A.G. Volkov (Ed.) Liquid Interfaces in Chemical, Biological and Pharmaceutical Applications. Dekker, New York. See also Chapter 6. [Pg.126]

The first micro-ITIES were introduced in 1986, using a glass micropipette which was pulled down to a fine tip of around 25 pm to support the interface [66-71]. The smaller size of micropipettes or microcapillaries is advantageous for sensor applications, providing the possibility of studying microenvironments as living cells, and it can also be used as a probe in scanning electrochemical microscopy (SECM) [72]. [Pg.370]

Zhang, J., C.J. Slevin, C. Morton, P. Scott, D.J. Walton, and P.J. Unwin. 2001. New approach for measuring lateral diffusion in Langmuir monolayers by scanning electrochemical microscopy (SECM) Theory and application. J. Phys. Chem, B 105 11120-11130. [Pg.180]

Lee, C., Kwak, J. and Bard, A. J. Application of scanning electrochemical microscopy to biological samples. Proc. Natl. Acad. Sci. 87 1740-1743, 1990. [Pg.39]

B. The application of scanning electrochemical microscopy for studies of reaction kinetics... [Pg.95]

B. The Application of Scanning Electrochemical Microscopy for Studies of Reaction Kinetics... [Pg.136]

A For the past 10 years, we ve been developing the technique of scanning electrochemical microscopy (SECM), which uses very small electrodes. For some applications, the smaller the better. The biggest ones are 10 micrometers, and they go down into the 50-nanometer range. We can... [Pg.489]

This volume is devoted to a complete and up-to-date treatment of scanning electrochemical microscopy (SECM). In this introductory chapter, we cover the historical background of the technique, the basic principles of SECM, and an overview of some of its applications (covered in more depth in later chapters). A number of reviews of this field have also been published G-6). [Pg.1]

Most scanning electrochemical microscopy (SECM) experiments are conducted in the amperometric mode, yet microelectrodes have for many years been used as potentiometric devices. Not surprisingly, several SECM articles have described how the tip operated in the potentiometric mode. In this chapter we aim to present the background necessary to understand the differences between amperometric and potentiometric SECM applications. Since many aspects of SECM are covered elsewhere in this monograph, we have focused on the progress made in the held of potentiometric microelectrodes and presented it in the context of SECM experiments. Starting with an historical perspective, the key discoveries that facilitated the development and applications of micro potentiometric probes are highlighted. Fabrication techniques and recipes are reviewed. Basic theoretical principles are covered as well as properties and technical operational details. In the second half of the chapter, SECM potentiometric applications are discussed. There the differences between the conventional amperometric mode are developed and emphasized. [Pg.397]

In the following sections we consider several potentiometric applications. Many articles do not refer directly to scanning electrochemical microscopy, but all are closely related to the SECM principles and were therefore included in the present chapter. We have not included a section on applications related to potentiometric probing of biological substrates since they are covered in Chapter 11 of this volume. [Pg.435]

K Borgwarth, C Ricken, DG Ebling, J Heinze. Surface-analysis by scanning electrochemical microscopy—resolution studies and applications to polymer samples. Fresenius J Anal Chem 356 288-294, 1996. [Pg.514]

C Wei, AJ Bard, I Kapui, G Nagy, K Toth. Scanning electrochemical microscopy. 32. Gallium ultramicroelectrodes and their application in ion-selective probes. Anal Chem 68 2651-2655, 1996. [Pg.515]

C Wei, AJ Bard, MV Mirkin. Scanning electrochemical microscopy. 31. Application of SECM to the study of charge-transfer processes at the liquid-liquid interface. J Phys Chem 99 16033-16042, 1995. [Pg.515]


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