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Quantitative self-powered electrochromic biosensors.

Miguel Aller Pellitero¹, Anton Guimerà^1,2, Maria Kitsara¹

¹Instituto de Microelectrónica de Barcelona , IMB-CNM (CSIC) , Campus de la Universidad Autónoma , Esfera UAB , 08193-Bellaterra , Barcelona , Spain . Email: Javier.delcampo@csic.es ; Tel: +34 935947700.

Chemical Science

|April 29, 2017

Summary

Electrochromic materials enable self-powered sensors without silicon electronics. A glucose biosensor demonstrates quantitative, naked-eye readings, simplifying sensor design and cost.

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Area of Science:

Materials Science
Analytical Chemistry
Electrochemistry

Background:

Self-powered sensors offer autonomous analytical capabilities by harvesting energy from their environment or sample.
Current silicon-based electronics for self-powered sensors increase complexity and cost, limiting widespread adoption.
Electrochromic materials present an alternative to traditional electronics for sensor development.

Purpose of the Study:

To demonstrate a novel approach for constructing self-powered electrochemical sensors using electrochromic materials.
To simplify sensor design and reduce reliance on silicon-based electronics.
To enable naked-eye quantitative readout of analytical information.

Main Methods:

Development of compact self-powered electrochemical sensors by integrating electrochromic displays.
Utilizing specially arranged materials to control current paths within the sensor.
Validation through a glucose biosensor coupled with a Prussian blue display acting as a distance-meter.

Main Results:

Successful fabrication of self-powered electrochemical sensors with simplified construction.
Demonstration of quantitative, naked-eye readable results proportional to analyte concentration.
Validation of the glucose biosensor concept, showing a distance-meter readout linked to glucose levels.

Conclusions:

Electrochromic materials offer a breakthrough for self-powered sensor technology, overcoming limitations of silicon-based approaches.
This method simplifies sensor construction and reduces costs, paving the way for broader applications.
The application of electrochromic materials is extended beyond displays and smart windows into sensing and quantification.