And Exendin-4 Purity & Documentation friction force (FF) images of your laser-patterned DLN film are shown in Figure 10. A region close to the corner in the microcrater structure was examinedCoatings 2021, 11,12 ofto evaluate the friction forces around the original and laser-patterned DLN surface. Equivalent for the previous studies [25], the LFM imaging was carried out employing worn Si guidelines together with the tip radius of 0.5 . The friction contrast is clearly observed and characterized by considerably decrease friction forces within the laser-patterned area than around the original surface, see Figure 10b. Because of somewhat deep craters, the contribution in the surface relief slope towards the lateral force signal isn’t Estramustine phosphate sodium Biological Activity totally compensated in the course of subtraction of two lateral force images [46], leading to “higher friction” at the crater edges. The reduced friction forces in the laser-patterned area are accompanied with a lot reduce pull-off forces (Fpull-off ) than on the original film, as confirmed by the force istance curves (Figure 11a) measured in various positions inside the FF image in Figure 10b, namely: (1) Fpull-off = 1290 nN on the original film, (two) Fpull-off = 990 nN close to the region of redeposited material, (3) Fpull-off = 63 nN within the region of redeposited material, and (4) Fpull-off = 16 nN within the center of a crater. This signifies that the ablated and redeposited material modifications the nanoscale surface properties within and around the laser-produced microcraters. The location in the low-friction area with redeposited material covers the distance of 102 from the crater edge and, such as the crater, it covers a circle area of 157 radius. The occurrence in the region “2” with slightly lower friction and pull-off force (than on original Coatings 2021, 11, FOR PEER Overview 13 of 16 Coatings 2021, 11, xxFOR PEER Assessment 13 of to surface) is almost certainly caused by mass distribution of ablated clusters/particles, top 16 variation within the structure and/or thickness of the redeposited layer.Figure 10. Surface relief (a) and friction force (b) photos of the laser-patterned DLN film close to the corner of a microcrater Figure 10. Surface relief (a) and friction force (b) images on the laser-patterned DLN film close to the corner of a microcrater Figure ten. Surface relief (a) and friction force (b) images from the laser-patterned DLN film near the corner of a microcrater structure (shown in Figure 1a), load on Si tip 120 nN. The marked points (1,two,3,4) inside the image are the places of forcestructure (shown in Figure 1a), load onon tiptip 120 nN. The marked points (1,two,three,four) inFFimageimage will be the locations of structure (shown in Figure 1a), load Si Si 120 nN. The marked points (1,two,3,4) within the FF FF are the places of forcethe distancecurves measurements, shown in Figure 11. curves measurements, shown in Figure 11. distance force istance curves measurements, shown in Figure 11.Figure 11. (a) The force istance curves measured various points around the DLN film (marked in inside the FF image in Figure Figure 11. (a) The force istance curves measured inindifferent points around the DLN film (markedthe FF image in Figure 10b): Figure 11. (a) The force istance curves measured in diverse points on the DLN film (markedin the FF image in Figure 10b): (1) original film, (2) near the area of redeposited material, (three) within the area of redeposited material, four) within the center 10b): (1) original film, (two) the region of redeposited material, (3) in(three) within the region of redeposited material, four) in center of a (1) original film, (2) near close to the regio.
