  We report on the preparation of inks containing fillers derived from
quasi-two-dimensional charge-density-wave materials, their application for
inkjet printing, and the evaluation of their electronic properties in printed
thin film form. The inks were prepared by liquid-phase exfoliation of CVT-grown
1T-TaS$_2$ crystals to produce fillers with nm-scale thickness and um-scale
lateral dimensions. Exfoliated 1T-TaS$_2$ was dispersed in a mixture of
isopropyl alcohol and ethylene glycol to allow fine-tuning of their
thermo-physical properties for inkjet printing. The temperature-dependent
electrical and current fluctuation measurements of printed thin films
demonstrated that the charge-density-wave properties of 1T-TaS$_2$ are
preserved after processing. The functionality of the printed thin-film devices
can be defined by the nearly-commensurate to commensurate charge-density-wave
phase transition of individual exfoliated 1T-TaS$_2$ fillers rather than by
electron-hopping transport between them. These results provide pathways for the
development of printed electronics with diverse functionality achieved by the
incorporation of quasi-two-dimensional van der Waals quantum materials.

Materials Science;Mesoscale and Nanoscale Physics