Fig. 3From: Feasibility of ultrafast picosecond laser cleaning of soiling on historical leather bucklesShow the increasing of laser scans provides better removal of the soiling without damaging of the leather surface (OM 8x). a Reference non-cleaned aged-soiled leather, b laser cleaning with fluence of 1.02 J cm−2 using 2 scan, c laser cleaning with fluence of 1.02 J cm−2 using 4 scans, d laser cleaning with fluence of 1.02 J cm−2 using 5 scansBack to article page