Experimental study of cryogen spray properties for application in dermatologic laser surgery. Academic Article uri icon


  • Cryogenic sprays are used for cooling human skin during laser dermatologic surgery. In this paper, six straight-tube nozzles are characterized by photographs of cryogenic spray shapes, as well as measurements of average droplet diameter, velocity, and temperature. A single-droplet evaporation model to predict average spray droplet diameter and temperature is tested using the experimental data presented here. The results show two distinct spray patterns--sprays for 1.4-mm-diameter nozzles (wide nozzles) show significantly larger average droplet diameters and higher temperatures as a function of distance from the nozzle compared with those for 0.5-0.8-mm-diameter nozzles (narrow nozzles). These results complement and support previously reported studies, indicating that wide nozzles induce more efficient heat extraction than the narrow nozzles.

published proceedings

  • IEEE Trans Biomed Eng

author list (cited authors)

  • Aguilar, G., Majaron, B., Karapetian, E., Lavernia, E. J., & Nelson, J. S.

citation count

  • 27

complete list of authors

  • Aguilar, Guillermo||Majaron, Boris||Karapetian, Emil||Lavernia, Enrique J||Nelson, J Stuart

publication date

  • January 2003