A new implantable drug delivery device is being developed in your lab. The device prototype is a very thin strip (0.1mm × 1mm × 15mm) of polymer coated on both sides with 22 milligrams of solid drug particles. To test the drug delivery profile, you
"implant the device by suspending it in a homogenous model fluid that has following
properties: viscosity = 0.0018 Pa.s, density = 1.32 g
cm^-3, temperature = 37°C. The diffusivity of the drug is estimated to be 2.113×10^-6 cm^2/S.
After 15 minutes, what do you expect the concentration of the drug to be at 1 mm from the device?

Question

A new implantable drug delivery device is being developed in your lab. The device prototype is a very thin strip (0.1mm × 1mm × 15mm) of polymer coated on both sides with 22 milligrams of solid drug particles. To test the drug delivery profile, you
"implant the device by suspending it in a homogenous model fluid that has following
properties: viscosity = 0.0018 Pa.s, density = 1.32 g
cm^-3, temperature = 37°C. The diffusivity of the drug is estimated to be 2.113×10^-6 cm^2/S.
After 15 minutes, what do you expect the concentration of the drug to be at 1 mm from the device?

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