| | |
Summary: BO12-xx header for SPIE use BiOS 2003, San Jose, CA, January
2003;
Design and Construction of Experimental Device to Study Cryogen Droplet
Deposition and Heat Transfer
Matthew D. Keller1,2
, Guillermo Aguilar2,3
, and J. Stuart Nelson2,3
1
Harvey Mudd College, Claremont, CA 91711
2
Beckman Laser Institute, University of California, Irvine, CA 92612
3
Department of Biomedical Engineering, University of California, Irvine, CA 92612
ABSTRACT
Cryogen spray cooling (CSC) is used to pre-cool the epidermis during laser dermatological procedures such as
treatment of port wine stain (PWS) birthmarks. It is known that PWS patients with medium to high epidermal melanin
concentrations are at a high risk of epidermal thermal damage after laser irradiation. To avoid this complication, it is
necessary to maximize CSC efficiency and, thus, essential to understand the mechanical and thermal interactions of
cryogen droplets with the sprayed surface.
It has been observed that cryogen sprays exhibit droplet rebound as droplets impinge on the skin surface. Studies
|
