Pore size of the scaffold looked good, and no big globs, meaning that the dehumidification worked. No alignment of the fibers but that was expected with this mesh set up. Results further indicate a success!

Second, bigger scaffold created during the second pneumatospinning experiment.

Close-up of triaxial needle during our second pneumatospinning experiment. Shows the Taylor cone of solution ejected from the needle.

Second pneumatospinning test.

First test scaffold created using our design. Here the sponsor wasn't concerned with circular fiber formation and looking at it under a microscope. That is something they will do as they use our device to optimize parameters. Instead it is a good initial demonstration of the functionality of the device: looking at fiber collection, dryness, dehumidification, and amount of overspray

Results after improving the chamber with silicone gaskets taped down with HVAC tape. No visible leakage meaning the results were a success and the chamber could be used for a pneumatospinning experiment.

Results of dry ice experiment were a fail, visible leakage from chamber. Showed that further improvements were needed to chamber sealing before a pneumatospinning experiment could be performed.

Experimental set up to further verify the safety and airflow of the chamber using dry ice.

Results from using tissue papers to visualize the flow of air into or out of the chamber. Goal was to have a constant flow of air into the chamber to prevent fumes from escaping, as well as have a majority of the airflow occur in the front panel. Success.

Experimental setup of chamber safety and airflow visualization test.

Experimental set up to characterize the syringe pumps functionality and accuracy.

Experimental set up for a test to characterize the tolerances and accuracy of the motor.

Finalized Design of chamber built and ready for testing.

Modular needle custom made by ramé-hart instrument co. chosen for the final design.

Design shift away from thermoelectric based dehumidification to dehumidification through temperature increase alone. Achieved by enclosure heaters that heat the incoming air, dropping relative humidity levels inside the chamber.

Getting motor to work and display on an LCD Screen.

Original concept to manufacture a custom triaxial needle.

Moved towards an 8020 design for robustness and simplicity.

Original concept for a modular collector plate.

Block diagram of identified subsystems and how they interact. Split up amongst group members to divide the work.

Overall set up that goes around the apparatus chamber itself. Putting the system as a whole into perspective.