Electric preconcentration and detection of latex beads with interdigitated electrodes

Roberto De La Rica, Cesar Fernandez-Sanchez, Antonio Baldi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Latex beads are adhered to the surface of a chip containing polycrystalline silicon interdigitated electrodes by positive dielectrophoresis. The presence of the microparticles induces a change in the distribution of the electric fields and currents that can be detected by measuring either the conductance or the capacitance at the electrode terminals. This combination of actuation and detection with a single device is proposed as a suitable system applicable to biosensing.
LanguageEnglish
Article number174104
Number of pages4
JournalApplied Physics Letters
Volume90
Issue number17
DOIs
Publication statusPublished - 2007

Fingerprint

latex
beads
electrodes
microparticles
electric current
actuation
capacitance
chips
electric fields
silicon

Keywords

  • interdigitated electrodes
  • electric preconcentration
  • detection
  • latex beads

Cite this

De La Rica, Roberto ; Fernandez-Sanchez, Cesar ; Baldi, Antonio. / Electric preconcentration and detection of latex beads with interdigitated electrodes. In: Applied Physics Letters. 2007 ; Vol. 90, No. 17.
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Electric preconcentration and detection of latex beads with interdigitated electrodes. / De La Rica, Roberto; Fernandez-Sanchez, Cesar; Baldi, Antonio.

In: Applied Physics Letters, Vol. 90, No. 17, 174104, 2007.

Research output: Contribution to journalArticle

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AU - De La Rica, Roberto

AU - Fernandez-Sanchez, Cesar

AU - Baldi, Antonio

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AB - Latex beads are adhered to the surface of a chip containing polycrystalline silicon interdigitated electrodes by positive dielectrophoresis. The presence of the microparticles induces a change in the distribution of the electric fields and currents that can be detected by measuring either the conductance or the capacitance at the electrode terminals. This combination of actuation and detection with a single device is proposed as a suitable system applicable to biosensing.

KW - interdigitated electrodes

KW - electric preconcentration

KW - detection

KW - latex beads

UR - http://dx.doi.org/10.1063/1.2731311

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DO - 10.1063/1.2731311

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