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Intracellular K(+) Determination With a Potentiometric Microelectrode Based on ZnO Nanowires
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology. Pakistan.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
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2011 (English)In: IEEE transactions on nanotechnology, ISSN 1536-125X, E-ISSN 1941-0085, Vol. 10, no 4, 913-919 p.Article in journal (Refereed) Published
Abstract [en]

The fabrication and application of an intracellular K(+)-selective microelectrode is demonstrated. ZnO nanowires with a diameter of 100-180 nm and a length of approximately 1.5. m are grown on a borosilicate glass microcapillary. The ZnO nanowires were coated by a K(+)-ionophore-containing membrane. The K(+)-selective microelectrode exhibited a K(+)-dependent potentiometric response versus an Ag/AgCl reference microelectrode that was linear over a large concentration range (25 . M-125 mM) with a minimum detection limit of 1 . M. The measured K(+) concentrations in human adipocytes and in frog oocytes were consistent with values of K(+) concentrations reported in the literature. The sensor has several advantages including ease of fabrication, ease of insertion into the cells, low cost, and high selectivity features that make this type of sensor suitable to characterize physiologically relevant ions within single living cells.

Place, publisher, year, edition, pages
IEEE , 2011. Vol. 10, no 4, 913-919 p.
Keyword [en]
Frog oocytes; human adipocytes; intracellular potassium ions; ionophore membrane; nanotechnology; potentiometric nanosensor; ZnO nanowires
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-69803DOI: 10.1109/TNANO.2010.2089696ISI: 000292966400038OAI: oai:DiVA.org:liu-69803DiVA: diva2:433566
Note

©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Syed Usman Ali, Muhammad Asif, Alimujiang Fulati, Omer Nur, Magnus Willander, Cecilia Brännmark, Peter Strålfors, Ulrika Englund, Fredrik Elinder and Bengt Danielsson, Intracellular K(+) Determination With a Potentiometric Microelectrode Based on ZnO Nanowires, 2011, IEEE transactions on nanotechnology, (10), 4, 913-919. http://dx.doi.org/10.1109/TNANO.2010.2089696

Available from: 2011-08-10 Created: 2011-08-08 Last updated: 2017-12-08

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Usman Ali, SyedAsif, MuhammadFulati, AlimujiangNur, OmerWillander, MagnusBrännmark, CeciliaStrålfors, PeterEnglund, UlrikaElinder, Fredrik

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Usman Ali, SyedAsif, MuhammadFulati, AlimujiangNur, OmerWillander, MagnusBrännmark, CeciliaStrålfors, PeterEnglund, UlrikaElinder, Fredrik
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