3D printing is a process of making three dimensional solid objects from a digital file which object is created by laying down successive layers of material until the object is created
Material jetting of ceramic nanoparticel is possible. For example the prorietary NanoParticle Jetting™ (NPJ) technology form XJET does this and enables the production of metal and ceramic parts. For further information you may wish to look at the following patents as a starting point: WO 2015056230, WO 2015056232