#nanoparticle fluid

Eiroma et al.: Water-based carbon-coated copper nanoparticle fluid. [DOI: https://doi.org/10.2352/J.ImagingSci.Technol.2012.56.4.040501] 

Formulation of inkjettable nanoparticle fluids: Automatic powder feeder in experimental fluid design for printed electronics

A research team of the VTT Technical Research Centre of Finland conducted a study to formulate a carbon-coated copper nanoparticle (Cu+CNT) fluid for printed electronic devices. To obtain the nanoparticles, the automatic and programmable powder dispenser was attached to the heating section of a quartz reactor to dispense copper chloride (CuCl) to the evaporation zone (750 - 800 °C) in presence of nitrogen flow. In the formulation step, the produced particles were mixed with water and co-solvents. Then, the deposition of formulated nanoparticle fluids was carried out to evaluate their conductive properties.

The notable attributes of the developed copper nanoparticle fluid are its easy processing, handling, and low cost compared to silver and gold; however, the material is not envisioned to replace the conventional printable fluids in devices that require high conductivity. The application of functional inks studied is in devices that require low conductivity, such as antistatic coatings, resistors and sensors.