“…Especially highly porous aluminum has attracted great interest in recent years [ 26 , 27 ]. Several metals, such as gold, platinum, tungsten, copper, titanium, palladium, or aluminum, were examined to obtain a black or colored coating [ 13 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. Recently, surface desorption processes have been reported on thin layers of black aluminum [ 35 ].…”