Consejo Superior de Investigaciones Científicas

An electrical stable electrochemical sensor device based on Electrolyte-gated field-effect transistor (EGFET)

Posted by Irene from Consejo Superior de Investigaciones CientíficasResponsive · Patents for licensing · Spain

Summary of the technology

CSIC has developed an electrolyte-gated field-effect transistor (EGFET) with enhanced electrical
stability. These new EGFETs operate in aqueous environment, and are stable for more than 12 hours
under continuous operation, greatly surpassing current state-of-the-art EGFETs. The increased stability
makes them suitable for real life applications.
Industrial partners are being sought to collaborate through a patent licence agreement.
An offer for Patent Licensing

ICMAB-CSIC
ICMAB-CSIC

Increased stability of EGFETs in aqueous environment Point-of-care (POC) biosensors or environmental portable sensors facilitate early diagnostic and analysis outside laboratories. Those sensors are based on different technologies, among them electrochemical sensors, such as electrolytegated field-effect transistors (EGFETs). EGFETs are highly sensitive, with low production cost and low energy consumption, and are compatible with flexible substrates. Importantly, EGFETs can be exposed directly to aqueous media needing less sample treatment. Unfortunately, EGFETs have limited electrical stability, less than an hour in continuous operation, due to the poor stability of the active semiconducting layer in contact with water molecules, making its real life application difficult. The present EGFET has an increased electrical stability. A new protective layer placed between the aqueous media and the active layer, greatly increases the devices electrical stability which typically degrade within an hour to successfully operate in continuous for more than 12 hours. This new device can then be applied for the label-free detection of analytes in aqueous media with few preparation/concentration of the samples. Samples can be among others: water samples, biological liquid samples, etc. The sensor can also be inserted into a microfluidic circuit in order to achieve a compact device that only requires a very small sample volume.


EGFET scheme

Main innovations and advantages


· New EGFET design that increases stability in aqueous media.

Intellectual property status

Granted Patent
-
 New EGFETs can be produced with different methods, including techniques compatible with roll-to-roll processes. European patent application filed suitable for international extension.  Label-free and high sensitive detection

Granted Patent
-
 New EGFETs can be produced with different methods, including techniques compatible with roll-to-roll processes. European patent application filed suitable for international extension.  Label-free and high sensitive detection

Technology Owner

Consejo Superior de Investigaciones Científicas

Public Agency

Related keywords

  • Electronics, IT and Telecomms
  • Electronics, Microelectronics
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  • Biosensor
  • Biological Sciences
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  • Diagnostics, Diagnosis
  • Heart and blood circulation illnesses
  • Micro- and Nanotechnology related to Biological sciences
  • Ionic Liquids
  • Sensors & Wireless products
  • Food Microbiology / Toxicology / Quality Control
  • Micro- and Nanotechnology related to agrofood
  • Measurements and Standards
  • Measurement Tools
  • Analyses / Test Facilities and Methods
  • Electrical Technology related to measurements
  • Sensor Technology related to measurements
  • Electronic measurement systems
  • Medical Health related
  • Diagnostic
  • Diagnostic services
  • In-vitro diagnostics
  • transistor
  • electrochemical sensor

About Consejo Superior de Investigaciones Científicas

Public Agency from Spain

The Spanish National Research Council (in Spanish 'Consejo Superior de Investigaciones Científicas (CSIC)') is a government agency for basic and applied scientific research.

It is the largest public research organization in Spain, with presence in all the Autonomous Communities through 126 centers and 145 associated units.

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