He stared at the two star-shaped indentations, water slowly filling the new one.
For dry indentation, no water molecules are added.
Some techniques exist and may be adopted for restoration, including diking, land smoothing, terracing, and indentations for water use efficiency and soil conservation (Unger and Agassi 1995; Ventura et al. 2003). 5.
A range of techniques including XRR, NEXAFS, Raman, surface profilometry, nano-indentation and water vapour permeation analysis were used to analyze the microstructure and properties of the films.
Besides, the repulsive force between the indenter and the water results in higher indentation force when the indentation depth is less than 2 nm. Figure 3 Effect of water molecules on indentation force at the speeds of (a) 10 and (b) 100 m/s.
Flood waters remained high this morning, because the nearby hyena tracks were followed by little indentations — splashes of water that had come off their paws.
Compared with dry indentation in which no water molecules are present, the existence of water molecules causes the increase of indentation force in initial penetration, but the decrease of indentation force in full penetration.
Experiments on the phantoms showed that this water jet indentation method was reliable to map the tissue stiffness distribution.
In addition, Figure 5 illustrates the effect of water on indentation force during the tool retraction process by comparing cases 1 and 2. For both wet and dry indentations, the indentation force decreases quickly at the beginning and reaches the equilibrium state at the retraction distance of about 0.7 nm.
Ultrasound has been used along with mechanical disturbance methods, such as indentation [ 7, 13], water jet indentation [ 14], compression [ 15], or osmosis loading [ 16], to measure more intrinsic mechanical properties and their depth dependency.
