Biomedical Engineering Reference
In-Depth Information
Chapter 6
D
ESIGN AND
D
EVELOPMENT
OF A
N
ANOPARTICLE
D
EPOSITION
S
YSTEM
FOR
C
OATING
M
EDICAL
D
EVICES
M. J. Jackson
*
, E. Alcorta,
V. C. Gorepathi and R. M. French
MET, College of Technology, Purdue University,
West Lafayette, IN, US
A
BSTRACT
This chapter outlines the development process of a pneumatic
projection device to fire particles into substrates at a range of high speeds.
An alternate approach to the existing cold gas dynamic spray device is
taken in an effort to seek a simple and cost-effective method for research
and industrial purposes. Initially, a large-scale vacuum cannon is used to
obtain data and compare velocity results to analytical methods and
numerical simulations using computational fluid flow software. A system
to precisely measure muzzle velocity is then developed for use on a
smaller-scale pneumatic device operating at relatively low pressures (95
psi) and at subsonic velocities. The device is then redesigned and
developed for use with a high-pressure (up to 1000 psi) air supply to
