Publication

Inkjet Printing of Functional Polymer Composites for Chemiresistive Gas Sensors

Thomas Maeder
2017
Posters

Abstract

Drop-on-Demand Inkjet printing can be used as an effective technique to deposit the sensing layer in chemiresistive gas sensors. In this type of gas sensors, a composite containing an insulating polymer mixed with a conductive filler is used for sensing analytes. However, formulation of inks containing functional materials remains challenging due to rheological constraints imposed by the inkjet printer. Here, we show the process of ink formulation for functional inks containing polyvinylpyrrolidone (PVP), a polar polymer, and carbon black (CB). We formulated composite inks containing PVP with different molecular weights (40 and 360 kDa) and studied their inkjet-abilities based on their shear viscosity and particle size distribution. Composite inks were successfully printed onto the sensor platforms and their electrical properties were characterized.

Official source

https://infoscience.epfl.ch/entities/publication/c62d090c-37ba-4c49-b69c-1bda098d6f23

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Thomas Maeder
2017
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c62d090c-37ba-4c49-b69c-1bda098d6f23

About this result

Related concepts (32)

Inkjet printing

Inkjet printing is a type of computer printing that recreates a by propelling droplets of ink onto paper and plastic substrates. Inkjet printers were the most commonly used type of printer in 2008, and range from small inexpensive consumer models to expensive professional machines. By 2019, laser printers outsold inkjet printers by nearly a 2:1 ratio, 9.6% vs 5.1% of all computer peripherals.As of 2023, sublimation printers have outsold inkjet printers by nearly a 2:1 ratio, accounting for 9.

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

Dye-sublimation printing

Dye-sublimation printing (or dye-sub printing) is a term that covers several distinct digital computer printing techniques that involve using heat to transfer dye onto a substrate. The sublimation name was first applied because the dye was thought to make the transition between the solid and gas states without going through a liquid stage. This understanding of the process was later shown to be incorrect, as there is some liquefication of the dye.

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Inkjet Printing of Functional Polymer Composites for Chemiresistive Gas Sensors

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