Sketch the LV, label electrode positions and numerical values of the radii of the cross sectional planes intersecting the electrodes on the catheter. Capacitive sensors are also used for biomedical measurements. In one application, engineers use a capacitive sensor to measure force. Electrical capacitance between two parallel plates is a function of the distance between the plates. If a compliant material is placed between these metal plates, application of a vertical force compresses the material and reduces the distance between the plates, increasing the capacitance.
Electrical capacitance is defined as electrical charge which can be stored for a given voltage.
Note that the equation 2.14 for electrical capacitance is independent of the electrical charge on the plates as well as the voltage between the plates. It is very similar to the equation 2.1 where the electrical resistance does not depend on the voltage or the current. When a force is applied to the parallel plate capacitor, distance between the plates changes, hence changing the capacitance. You will build a capacitor and vary the distance between the plates to simulate application of pressure. Connect a pulse generator to a 10 cm x 10 cm parallel plate capacitor formed by two metal sheets and a series resistor.