Middle-ultraviolet laser cleaning of particulates from sized ground wood cellulose and pure cellulose paper

Laser cleaning of paper: Cleaning efficiency and irradiation dose

“…Therefore, the actual value of colorimetric changes in respect to the uncontaminated original status ΔL ('cleaning') and Δb ('yellowing') has to refer to the remaining non-irradiated areas, A B , between the ▽ n = 1; △ n = 2; ○ n = 5; □ n = 9. Inserts: destruction of uncontaminated paper: ▾ n = 1; ▴ n = 2; • n = 5; ■ n = 9. laser spots (Arif et al, 2013a(Arif et al, , 2013b)…”

“…In contrast to inorganic materials (such as stone), laser irradiation of bio-organic materials (such as paper) may lead to photochemical and photothermal degradation. (Kautek et al, 1998;Kolar et al, 2000aKolar et al, , 2000bKolar et al, , 2002Kolar et al, , 2003Bloisi et al, 2003;Kaminska et al, 2003Kaminska et al, , 2004Kaminska et al, , 2005Strlic et al, 2003;Georgiou, 2004;Rudolph et al, 2004aRudolph et al, , 2004bCarmona et al, 2011;Forster et al, 2011;Pentzien et al, 2011;Arif et al, 2012Arif et al, , 2012b2013a, 2013bArif & Kautek, 2013;Ganeev, 2014).…”

“…It occurs mainly with infrared but also with ultraviolet radiation, while remedial action can be taken by choosing visible wavelengths (Kolar et al, 2000b;Kaminska et al, 2003Kaminska et al, , 2004Kaminska et al, , 2005Strlic et al, 2003Strlic et al, , 2005Rudolph et al, 2004aRudolph et al, , 2004bKautek, 2008;2010;Krüger et al, 2008;Pentzien et al, 2010;Forster et al, 2011;Arif et al, 2013aArif et al, , 2013b.…”

Analysis of Cleaning Process for Several Kinds of Soil by Probability Density Functional Method

“…Recent studies on solid soil removal have focused on cleaning processes for hydrophobic and hydrophilic solid particle soils adhered to fabrics using surfactants 28,29 , laser cleaning of charcoal particle cellulose paper 30 , cleaning of fine particles by high speed air jet 31 , and cleaning of spherical polystyrene latex particles adhered to a silica substrate by a megasonic wave 32 . Recent studies on the mechanism of solid soil removal are related to the detachment process analyzed by Monte Carlo simulations 33 and by the quartz crystal microbalance technique 34 .…”

Cleaning of Graphite Particles Embedded in the Surface of Ductile Iron by Using a Novel Method

“…A low threshold thermal-chemical impact ablation mechanism of the film can be implemented under the effect of pulsed laser radiation with power density lower than 10 7 W/cm 2 [12,14] ( Figure 1(b)). Laser cleaning technique has been successfully applied to removal of paint and oxide layer on metal surfaces, cleaning of optical and electronic elements, and conservation of cultural heritage [15][16][17][18][19][20][21][22]. However, few research studies have been carried out on laser cleaning of ductile iron.…”