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The development of a nanocomposite conductive ink for fabrication of inkjet-printed biosensor and applications
Transcript of The development of a nanocomposite conductive ink for fabrication of inkjet-printed biosensor and applications
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Physical properties of fluid
Requirements for printability
The development of a nanocomposite conductive ink
for fabrication of inkjet-printed biosensor and applications
Simon Nussbaumer EPFL
Accurate amount of material deposition
big surface patterning
Domain of application
Polymer light emiting diode (PLED)
3D ceramic printing
Nucleic Acid and Protein Arrays
Key technology in functional material deposition
Surface tension :
Radius of nozzle :
Average velocity :
Viscosity: 10-12 centipoise
Surface Tension: 28-42 dynes/cm
High boiling point >100°C
Filtration: 0.2 um
cross flow filtration, prevention of gel layer at the filter surface
Newtonian vs Non Newtonian
Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force.
Gelling effect of Polyaniline :
Negative effects of thickening agents:
Hard to remove after printing
Tendency to aggregation and clogging
2D building block for sp2 carbon allotropesHigh interest in research Excellent electrical, mechanical,
and thermal propertiesLow costHigh conductivity
nanomechanical systems,thin-film transistors, transparent or conductivecomposites, electrodes, andphotonics
Temperature (cartridge & substrate)
Distance between nozzles and substrate
Drying temperature & time
Coffee ring effect
Total antioxydant measurement
Other coating method
Thank you for your attention!
Ink from cartridge to nozzle
-pressure wave (piezo)
-voltage & frequency
- vary size and speed of