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Nozzle-jet printed flexible field-effect transistor biosensor for high performance glucose detection.

Kiesar Sideeq Bhat1, Rafiq Ahmad1, Jin-Young Yoo1

  • 1School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea.

Journal of Colloid and Interface Science
|July 24, 2017
PubMed
Summary

We developed a nozzle-jet printed flexible field-effect transistor (FET) glucose biosensor. This printable biosensor offers a low-cost, reproducible, and scalable method for glucose detection, even in human serum.

Keywords:
Field-effect transistorGlucose biosensorNozzle-jet printingZnO nanorods

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Area of Science:

  • Materials Science and Engineering
  • Nanotechnology
  • Biosensors and Bioelectronics

Background:

  • Printable electronics offer potential for low-cost, large-scale device manufacturing.
  • Developing printable biosensors remains a significant challenge.
  • Flexible electronics require robust and reproducible fabrication methods.

Purpose of the Study:

  • To fabricate a flexible field-effect transistor (FET) glucose biosensor using nozzle-jet printing.
  • To evaluate the performance and characteristics of the printed glucose biosensor.
  • To demonstrate the potential for scalable and cost-effective biosensor production.

Main Methods:

  • Fabrication of silver source-drain electrodes and ZnO seed layers on a flexible substrate via nozzle-jet printing.
  • Synthesis of zinc oxide nanorods (ZnO NRs) and immobilization of glucose oxidase (GOx).
  • Characterization of electrode reproducibility, ZnO NR growth, and GOx loading.

Main Results:

  • Achieved highly reproducible electrodes and well-defined vertical ZnO NRs using nozzle-jet printing.
  • Demonstrated enhanced glucose sensing performance over a wide detection range.
  • Confirmed excellent stability, anti-interference ability, reproducibility, reusability, and applicability in human serum samples.

Conclusions:

  • Nozzle-jet printing enables large-scale, cost-effective production of reproducible biosensor electrodes.
  • The developed printable glucose biosensor exhibits high performance and reliability.
  • Printed electrode technology can be adapted for the detection of various analytes.