A silicon nanoparticle fluid including a) a set of silicon nanoparticles present in an amount of between about 1 wt % and about 20 wt % of the silicon nanoparticie fluid; b) a set of HMW binder molecules present in an amount of between about 0 wt % and about 10 wt % of the silicon nanoparticle fluid; and c) a set of capping agent molecules, such that at least some capping agent molecules are attached to the set of silicon nanoparticles. Preferably, the silicon nanoparticle fluid is a shear thinning fluid.