Fig. 9From: Trends in mechanobiology guided tissue engineering and tools to study cell-substrate interactions: a brief reviewSchematic representation of QCM-D sensor with piezoelectric AT-cut quartz crystal (for using between 0.5 MHz to 300 MHz) having gold electrodes (A) and schematic representation of working of QCM-D with a recording of Δf and ΔD (B). Reproduced under Creative Commons CC BY from [184]Back to article page