Self-assembled interfaces in nanoscale structure made of metal; oxides and mixed composites have drawn a
lot of attention due to its application in from photonics to sensor application. Here we report that for low
melting point metals like aluminum, can self-assembly into well separated nanodots even with very high
thickness (<150nm) when interface in driven close to their melting point. When electrochemical oxidized the
stress causes discrete cross plastic slip without continuous deformation and forms stepped porous oxide
nanostructure. The process is a very efficient way to make large-scale oxide or composite nanostructure for
wide variety of application ranging from efficient solar cell to photonic devices.