In this work we integrate Electrolyte-Gated Field-Effect transistors (EGFET) in Lab-on-Printed Circuit Board (Lab-on-PCB) microsystems for the first time, aiming for the implementation of an ultra-high sensitivity biosensing platform that can still be cost-effectively mass-produced. Silver-nanoparticle ink was ink-jet printed on PCB-based gold electrodes and was chlorinated to fabricate stable pseudo-reference electrodes. Graphene ink was drop-casted to create the transistor channel. Preliminary results with single-stranded DNA (ssDNA) immobilized on the graphene surface revealed systematic shift in Vdirac with increasing complementary DNA concentration.
Original languageEnglish
Publication statusAcceptance date - 1 Jul 2019
EventMiniaturized Systems for Chemistry and Life Sciences 2019 - Congress Center Basel, Basel, Switzerland
Duration: 27 Oct 201931 Oct 2019
Conference number: 23rd


ConferenceMiniaturized Systems for Chemistry and Life Sciences 2019
Abbreviated titleµTAS 2019
Internet address


  • Printed circuit board
  • Graphene
  • Biosensor
  • Field-effect transistor
  • DNA
  • Ink-jet
  • Microfluidics


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