Notebook

Dry Lab Notebook

---

January:

• Week 1-2 (Jan. 1st - Jan. 12th)
• Initial brainstorming and preparation after group project selection.
• Literature reviews and background research begins.
• Week 2-3 (Jan. 13th - Jan. 20th)
• Meetings with the wet lab were conducted to ensure that all parties were on the same page and that basic microbiology was understood.
• Week 4 (Jan. 21st - Jan. 27th)
• Project parameters were set by the dry lab but still ill-defined.

February:

• Week 1 (Jan. 28th - Feb. 3rd)
• Research on fluorescent light effectiveness was conducted and the pros and cons were evaluated.
• LEDs were found to be significantly less harmful to healthy cells and had increased cell death rates.
• Specific wavelengths of light were then evaluated.
• Wavelengths of light ranging from 420-550 nm in the blue and green spectrum showed significant promise in their ability to kill pathogenic bacteria.
• Project parameters were better defined and an initial model was made.
• Week 2-3 (Feb. 4th - Feb. 17th)
• Design one is created with blue LEDs in mind.
• The initial design for the LED housing is sketched in SolidWorks.
• Week 4 (Feb. 18th - Feb. 24th)
• Materials and medical standards research is conducted.

March:

• Week 1-2 (Feb. 25th - March 9th)
• Design one goes into review. The wet lab and dry lab meet to discuss the engineering behind the first design.
• Week 2-4 (March 10th - 28th)
• Different medical scenarios are analyzed to theoretically test the design. Unfortunately, the design does not meet expectations in all aspects.

April:

• Week 1 (March 29th - April 6th)
• Design 1 was determined to be an ill fit for the project as it had too many moving parts and sterility in the final iteration could not be guaranteed.
• Week 2-3 (April 7th - April 20th)
• More meetings were conducted in tandem with the wet lab to ensure that the model would fit all functional requirements.
• Week 4 (April 21st - April 27th)
• Materials, surface areas, overall size, and ease of operation were all reevaluated to ensure the second design would conquer the right design challenges.

May:

• Week 1-3 (April 28th - May 18th)
• The Dry Lab team is tasked with brainstorming new designs and integrating findings from the previous iteration.
• Week 4 (May 19th - May 27th)
• Research into medical lamps begins. Medical lamps in the industry provide good examples of what an adequate device needs to be.

June:

• Week 1 (May 29th - June 8th)
• The main design considerations become size to ensure autoclavability, mobility of the apparatus, and it must cover every inch and crevice.
• Small Autoclave dimensions (~408mmx408mmx730mm) were found and accounted for in the design.
• Week 2-4 (June 9th - June 29th)
• Design drawings start on paper and slowly build on each other.

July:

• Week 1-2 (June 30th - July 13th)
• Outside collaborator provides CAD input.
• Research into LEDs for purchase begins. The LED must be within the desired wavelength range.
• Week 3-4 (July 14th - July 27th)
• CAD design for the second iteration is started.

August:

• Week 1-2 (July 28th - Aug. 10th)
• Bulb is purchased and the dimensions of the bulb are recorded for input into CAD.
• Week 3-4 (Aug. 11th - Aug. 30th)
• Hardware modifications are made to the purchased bulb to get it operational for use in the proposed design.

September:

• Week 1-3 (Aug. 31st - Sept. 21st)
• Major progress is made with the newly named Healios Lamp. The new design incorporates three degrees of motion with three arm sections and a base with wheels. The design is robust and it is able to reach any exterior location on the human body.
• Week 4 (Sept. 22nd - Sept. 28th)
• Troubleshooting is done to ensure the lamp head design fits well with the purchased modified LED bulb.

October:

• Week 1 (Sept. 29th - Oct. 2nd)
• Final adjustments to the 3D model are made to ensure ease of printing
• The 3D model begins printing at OSUs CEAT Endeavor labs.
• Week 2 (Oct. 3rd - Oct. 9th)
• Assemble parts for printed Healios Lamp. The purchased LED will be attached to the assembly to complete the build.