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influence of surface roughness and tip geometry (Experimental (2 tips…
influence of
surface roughness and tip
geometry
Background
wood surface has rougness in multiple scales
thus, each region has varieties of wetting property
due to fibre is carbohydrate
this will affect the adhesion measurement reproducibility
therefore, exact surface topography is critical
substrate topography
AFM tip topography
due to different fiber orientation between layers
Layers
Lumen
S3
S2
S1
Experimental
2 tips
30 nm
2 μm
2 location (3 times)
S3
S2
Material
2 kinds of wood
latewood
earlywood
Picea abies
cut radially by diamond knife
Result