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ZnO nanorods as an intracellular sensor for pH measurements
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för teknik och naturvetenskap.ORCID-id: 0000-0001-6235-7038
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Avdelningen för medicinsk cellbiologi.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Avdelningen för medicinsk cellbiologi.
2007 (engelsk)Inngår i: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 102, nr 8Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

ZnO nanorods with 80 nm diameter and 700 nm length and grown on the tip of a borosilicate glass capillary (0.7 μm in diameter) were used to create a highly sensitive pH sensor for monitoring in vivo biological process within single cells. The ZnO nanorods, functionalized by proton H3 O+ and hydroxyl O H- groups, exhibit a pH -dependent electrochemical potential difference versus a AgAgCl microelectrode. The potential difference was linear over a large dynamic range (4-11), which could be understood in terms of the change in surface charge during protonation and deprotonation. These nanoelectrode devices have the ability to enable analytical measurements in single living cells and have the capability to sense individual chemical species in specific locations within a cell. © 2007 American Institute of Physics.

sted, utgiver, år, opplag, sider
2007. Vol. 102, nr 8
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-41077DOI: 10.1063/1.2798582Lokal ID: 55048OAI: oai:DiVA.org:liu-41077DiVA, id: diva2:261927
Tilgjengelig fra: 2009-10-10 Laget: 2009-10-10 Sist oppdatert: 2017-12-13

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