Fourth Year Design Project
Isoflex is the first sensor of its kind, with a unique combination of capacitive and resistive sensor elements combined into one mechanically homogeneous package allowing it to be extremely durable and stretchable. Over one year was spent by four team members: Guillaume Fernandes, Jacob Chausse, Andrew Harabin, Nick Levinski. Through countless nights sleeping in QNC to tackling the unknown we were able of achieving our goal of a versatile sensing system for wearable and biomechanical settings.
When setting out to develop our sensor we had one goal, more data with less work. With our novel design we were capable of measuring forces in two axis with only three connection points, and when connected in an array of sensors 3D spatial force mapping can be achieve with only two connections per sensor unit.
Due to limited facilities and budget we set out to leverage a multi step planar fabrication process which consisted of multiple masked layer depositions with accelerated PDMS curing cycles to create a fully encapsulated and skin safe senor that is durable and extremely stretchable.
In-depth Multiphysics simulation was conducted within COMSOL to guide and validate both material selections and sensor architecture parameters.
Through four distance studies we were able to minimize trial and error and successfully fabricated a working sensor prototype with minimal changes to the simulation validated design
We had the honour to represent the Nanotechnology Class of 2023 with our group highlighted by the University of Waterloo Faculty of Engineering. This video was made by the team early in development and highlights the determination and passion the team had to overcome an insanely complex design project.