1. Can You Heat Me Now? Brie Frame Sandra Gonzalez Angela Tong Chenny Zhu Department of Materials Science 3.082 Advisor: Hao Wang

2. Outline of Presentation Objective Requirements and Restrictions What’s Available Now Chemical vs. Electrical Components of Device Proposed Schedule

3. Objective Design and fabrication of device to be used for heat therapy with possible transdermal drug delivery mechanism

4. Requirements and Restrictions Optimal temperature range 32-37° C Portability Long lasting heat (6-8 hrs) Renewable Non-Toxic Affordable Washable

5. What’s Available Now Chemical  Reusable Sodium Acetate  Disposable Charcoal Hand Warmers Electrical  Electric Blankets  Electric Heat Pads Organic Materials  Rice  Flaxseed

6. Chemical vs. Electrical ChemicalElectrical Portability +— Low Cost +— Modular +— Temperature regulation —+ Compact +— Long-lasting heat ++ Reusability —+

7. Components of Device Body Outer Covering Heating Core Low Insulating Layer High Insulating Layer

8. Heating Core Desired Properties  Long lasting heat (6-8 hrs)  Non-toxic  Affordable  Size variability  Reversible reaction  Chemical Degradation Resistance (multiple cycles)  Biodegradable  Easily replaceable Potential Materials  Sodium Acetate  Phase Changing Materials  Potassium Nitrate  Iron/Oxygen Reaction  Calcium Chloride/Water  Potassium Chlorate

9. Insulating Material Desired Properties  Dual Insulators with varying insulating capabilities, one for each side of band Retains and slowly releases heat to elongate the heating time (body side) Completely insulates heat (environment side)  High Heat Capacity/Low Thermal Conductivity  Water Proof  Heat Resistant Potential Materials  Neoprene  Insulwrap Quilts from American Acoustical Products

10. Outer Covering Desired Properties  Functionality  Stylish Design  Water absorbing/ water wicking  Comfortable  Hypo-allergenic  Biodegradable Potential Materials  Cotton  Polyester  Polypropylene  Various combinations of above

11. Proposed Schedule Formal Design Review PresentationInitial Prototype DueLast Day of Lab WorkFinal Presentations