The physical demonstrator needs to integrate a mechanism strong enough to produce the range of pressures required to activate our pressure-sensitive bacteria, in a form-factor that is easy to transport and operate in the microbiology lab.
The sketches below correspond to some initial studies on mechanisms that enable producing relatively high force loads. The exploration is leading towards a screw mechanism, similar to those found in wine and book presses, and that transform the turn of a handle in linear movement. Mounted on a rigid frame, this produces forces in the range required by the project. The system will be complemented by a force sensor which enables monitoring the amount of force produced by the system, giving the researcher control over experimental conditions.