Spreading of triple line and dynamics of bubble growth inside nanoparticle dispersions on top of a substrate plate

► Surface wettability is engineered by introducing nanoparticles in the liquid phase. ► Different nanoparticles affect surface wettability differently. ► Gold particle shows an early-pinning of the triple line during bubble formation. ► Alumina particle shows a late-pinning of the triple line during bubble formation. ► The variation of solid surface tensions at the triple line shall be responsible.