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  Ultracompact Three-Dimensional Tubular Conductivity Microsensors for Ionic and Biosensing Applications

Martinez-Cisneros, C. S., Sanchez, S., Schmidt, O. G., & Xi, W. (2014). Ultracompact Three-Dimensional Tubular Conductivity Microsensors for Ionic and Biosensing Applications. Nano Letters, 2219-2224. doi:10.1021/nl500795k.

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 Creators:
Martinez-Cisneros, C. S.1, Author
Sanchez, S.1, 2, Author           
Schmidt, O. G.1, 3, Author
Xi, Wang2, Author           
Affiliations:
1Institute for Integrative Nanosciences, Leibniz Institute for Solid State and Materials Research Dresden, 01069 Dresden, Germany, ou_persistent22              
2Dept. Theory of Inhomogeneous Condensed Matter, Max Planck Institute for Intelligent Systems, Max Planck Society, ou_1497643              
3Materials Systems for Nanoelectronics, TU Chemnitz, TU Chemnitz, Germany, ou_persistent22              

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Free keywords: Abt. Dietrich; Forschungsgruppe Sanchez; smart nano-bio devices;
 Abstract: We present ultracompact three-dimensional tubular structures integrating Au-based electrodes as impedimetric microsensors for the in-flow determination of mono- and divalent ionic species and HeLa cells. The microsensors show an improved performance of 2 orders of magnitude (limit of detection = 0.1 nM for KCl) compared to conventional planar conductivity detection systems integrated in microfluidic platforms and the capability to detect single HeLa cells in flowing phosphate buffered saline. These highly integrated conductivity tubular sensors thus open new possibilities for lab-in-a-tube devices for bioapplications such as biosensing and bioelectronics.

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Language(s): eng - English
 Dates: 2014
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/nl500795k
 Degree: -

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Title: Nano Letters
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 2219 - 2224 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403