Fig. 1: Performance of photosensitive ceramic slurry.

a Schematic representation of NIR-assisted direct ink writing. b Three intervals thixotropic test showing the elastic recovery of the alumina slurry at a frequency of 1 Hz. c NIR-induced photopolymerization of slurry was monitored by real-time FTIR rheological analysis. The upper figure showed the double bond conversion as a function of irradiation time. The figure below showed the modulus of the slurry as a functional relationship with the irradiation time.