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

2014

Article

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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 \textequals 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.

Author(s): Martinez-Cisneros, C. S. and Sanchez, S. and Schmidt, O. G. and Xi, Wang
Journal: Nano Letters
Pages: 2219--2224
Year: 2014
Publisher: American Chemical Society

Department(s): Theory of Inhomogeneous Condensed Matter
Bibtex Type: Article (article)

Address: Washington, DC
DOI: 10.1021/nl500795k
Language: eng

BibTex

@article{escidoc:2125583,
  title = {Ultracompact Three-Dimensional Tubular Conductivity Microsensors for Ionic and Biosensing Applications},
  author = {Martinez-Cisneros, C. S. and Sanchez, S. and Schmidt, O. G. and Xi, Wang},
  journal = {Nano Letters},
  pages = {2219--2224},
  publisher = {American Chemical Society},
  address = {Washington, DC},
  year = {2014}
}