Title :
The Effect of Laser Wavelength in the Simulation of Laser Generated Surface Waves in Human Skin Model
Author :
Etang, Adele L. ; Huang, Zhihong
Author_Institution :
Div. of Mech. Eng. & Mechatronics, Dundee Univ.
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
A finite element (FE) simulation of the thermoelastic laser generated surface waves in a 3-layered model of human skin is presented. Commercial finite element code ANSYS is used to study the effects of changing laser wavelength and hence the optical absorption has on the generated surface waves. The FE model consists of a thermal analysis with a volumetric heat generation boundary condition to simulate the thermal effect of the laser source penetrating into the skin. The results from the thermal analysis are then subsequently applied as a load in a mechanical analysis where the out-of plane displacement histories and temperature fields are analysed using two different laser sources to generate the ultrasonic waves
Keywords :
bio-optics; bioacoustics; biological effects of laser radiation; biothermics; finite element analysis; light absorption; medical computing; physiological models; skin; surface acoustic waves; thermal analysis; thermoelasticity; ultrasonic waves; 3-layered model; ANSYS code; boundary condition; finite element simulation; human skin model; laser wavelength effects; mechanical analysis; optical absorption; out-of plane displacement histories; temperature fields; thermal analysis; thermoelastic laser generated surface waves; ultrasonic waves; volumetric heat generation; Absorption; Boundary conditions; Finite element methods; Humans; Laser modes; Optical surface waves; Skin; Surface emitting lasers; Surface waves; Thermoelasticity;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.259680
