Figure 6
From: Minimally Invasive Micro-Indentation: mapping tissue mechanics at the tip of an 18G needle
Schematic of the (A) experimental setup and (B) readout and feedback control. (A) The probe is mounted on a long-range piezoelectric translator (orange), which is attached to a manual translation stage (green). The probe is housed in an 18G needle, fixed on a motorized linear stage. The sample is clamped in front of the needle and can be positioned in three dimensions (XYZ). (B) Real-time control of cantilever displacement (i.e. load control) by means of the piezoelectric translator is enabled by high-frequency wavelength modulation.
