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We report on the preparation of inks containing fillers derived fromquasi-two-dimensional charge-density-wave materials, their application forinkjet printing, and the evaluation of their electronic properties in printedthin film form. The inks were prepared by liquid-phase exfoliation of CVT-grown1T-TaS$_2$ crystals to produce fillers with nm-scale thickness and um-scalelateral dimensions. Exfoliated 1T-TaS$_2$ was dispersed in a mixture ofisopropyl alcohol and ethylene glycol to allow fine-tuning of theirthermo-physical properties for inkjet printing. The temperature-dependentelectrical and current fluctuation measurements of printed thin filmsdemonstrated that the charge-density-wave properties of 1T-TaS$_2$ arepreserved after processing. The functionality of the printed thin-film devicescan be defined by the nearly-commensurate to commensurate charge-density-wavephase transition of individual exfoliated 1T-TaS$_2$ fillers rather than byelectron-hopping transport between them. These results provide pathways for thedevelopment of printed electronics with diverse functionality achieved by theincorporation of quasi-two-dimensional van der Waals quantum materials.

Charge-Density-Wave Devices Printed with the Ink of Chemically Exfoliated 1T-TaS$_2$ Fillers