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Related Experiment Video

Updated: Jun 10, 2026

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis
14:53

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis

Published on: September 10, 2014

A digital CMOS-based 24×16 sensor array platform for fully automatic electrochemical DNA detection.

Philipp Kruppa1, Alexander Frey, Ingo Kuehne

  • 1Corporate Research & Technologies, Siemens AG, D-81739 Munich, Germany. philipp.kruppa@gmx.de

Biosensors & Bioelectronics
|August 24, 2010
PubMed
Summary

This study presents a fully electronic digital CMOS DNA-chip for rapid biological information readout. The robust, user-friendly system-on-chip design enables new applications in diagnostics and food control.

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Related Experiment Videos

Last Updated: Jun 10, 2026

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis
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Area of Science:

  • Biotechnology
  • Electrical Engineering
  • Nanotechnology

Background:

  • Traditional optical DNA detection methods require complex setups.
  • There is a need for robust, user-friendly, and cost-effective DNA sensing technologies.
  • Fully electronic DNA sensor arrays offer advantages over optical methods.

Purpose of the Study:

  • To present a fully integrated system-on-chip (SoC) design for a digital CMOS DNA-chip.
  • To demonstrate a cost-optimized, robust, and user-friendly DNA detection solution.
  • To showcase the chip's functionality through electrical, electrochemical, and DNA tests.

Main Methods:

  • Design and implementation of a digital CMOS DNA-chip using 0.35 μm standard CMOS technology.
  • Integration of gold electrodes via a backend process.
  • Chronocoulometric measurement as the core sensing principle.
  • Utilizing a 384-sensor array on a 15.8 mm² chip.

Main Results:

  • The chip demonstrates functionality through electrical, electrochemical, and DNA tests.
  • The system-on-chip design is cost-optimized, robust, and user-friendly.
  • Complete electrochemical DNA detection is achieved in milliseconds for the entire array.
  • The chip operates with low power dissipation (<102 mW).

Conclusions:

  • The developed digital CMOS DNA-chip offers a fully electronic, robust, and user-friendly solution for DNA sensing.
  • The chip's design enables diverse applications in areas like point-of-care diagnostics and food safety.
  • The system's multifunctionality and flexibility, including cyclic voltammetry and chronocoulometric analysis, enhance its utility.