The thermoelastic basis of short pulsed laser ablation of biological tissue
| Autor: | C. von Rosenberg, Michael S. Feld, M. Dark, Douglas Albagli, Irving Itzkan, Lev T. Perelman |
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| Rok vydání: | 1995 |
| Předmět: |
Materials science
Hot Temperature medicine.medical_treatment Quantitative Biology::Tissues and Organs Physics::Medical Physics Analytical chemistry Light scattering law.invention Optics Thermoelastic damping law medicine Animals Humans Spallation Multidisciplinary Laser ablation business.industry Lasers Models Theoretical Laser Wave equation Ablation Elasticity Interferometry Laser Therapy business Research Article |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America. 92(6) |
| ISSN: | 0027-8424 |
| Popis: | Strong evidence that short-pulse laser ablation of biological tissues is a photomechanical process is presented. A full three-dimensional, time-dependent solution to the thermoelastic wave equation is compared to the results of experiments using an interferometric surface monitor to measure thermoelastic expansion. Agreement is excellent for calibrations performed on glass and on acrylic at low laser fluences. For cortical bone, the measurements agree well with the theoretical predictions once optical scattering is included. The theory predicts the presence of the tensile stresses necessary to rupture the tissue during photomechanical ablation. The technique is also used to monitor the ablation event both before and after material is ejected. |
| Databáze: | OpenAIRE |
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