Where Δm is the mass gain at the electrode surface (in ng /cm2), fR is the fundamental resonance frequency of the quartz crystal, ρQ is the density of the crystal, d is the thickness of the quartz crystal (~330 nm ), A is the area of the electrodes and n is the overtone number used in the determination (n = 1, 3, 5...13).
The mean thickness of all quartz stones from the sampled quartz field was 7.8 mm and ranged in thickness from 1.7 to 29.8 mm. Figure 2 Frequency histograms of the thickness (A), mass (B) and depth embedded in the soil (C) of colonized and uncolonized quartz stones from a quartz field in the Knersvlakte, Western Cape, South Africa.
The thickness of the quartz substrate is 1 mm.
Combined with the results in Figure 4, because the formation of lattice distortion under groove did not help to increase the etching thickness, the selective etching of quartz might be related to other structural changes in the scanned area.
(a) Electrode patterns were formed to both faces of the AT-cut quartz crystal plate (thickness of 100 μm) using a photolithography technique lift-off process [[20]].
First, Ag film was thermal evaporated on substrate with base pressure of 2 × 10−3 Pa and thickness monitored by an in situ microbalance of quartz crystal.
The NR growth finished at a thickness of 1000 nm read by a quartz crystal microbalance [10, 12].
Mass thickness of the film was monitored using quartz crystal resonator, the resonant frequency of which depends on the thickness of deposited film.
In contrast, w = 0.3 km indicates that the uppermost quartz-rich layer with a thickness of 0.3 km deforms identically to wet quartz, whereas the lower basaltic layer behaves as a rigid body.
The optical thickness and electrochemical quartz crystal microbalance (EQCM) mass are coherent with a density of 7.06.
