Abstract
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 language | English |
|---|---|
| Publication status | Acceptance date - 1 Jul 2019 |
| Event | Miniaturized Systems for Chemistry and Life Sciences 2019 - Congress Center Basel, Basel, Switzerland Duration: 27 Oct 2019 → 31 Oct 2019 Conference number: 23rd https://www.microtas2019.org/ |
Conference
| Conference | Miniaturized Systems for Chemistry and Life Sciences 2019 |
|---|---|
| Abbreviated title | µTAS 2019 |
| Country | Switzerland |
| City | Basel |
| Period | 27/10/19 → 31/10/19 |
| Internet address |
Keywords
- Printed circuit board
- Graphene
- Biosensor
- Field-effect transistor
- DNA
- Ink-jet
- Microfluidics
Cite this
Papamatthaiou, S., Estrela, P., & Moschou, D. (Accepted/In press). PCB-implemented graphene electrolyte-gated field-effect transistors for biosensing applications. Paper presented at Miniaturized Systems for Chemistry and Life Sciences 2019, Basel, Switzerland.