Mechanisms of Pulsed Laser Ablation of Biological Tissues

Mechanisms of pulsed laser ablation of biological tissues.

1. Ablation Threshold 612 2. Ablation Enthalpy 613 3. Ablation Efficiency 613 C. Mechanistic Models 613 1. Steady-State Vaporization Models 614 2. Thermomechanical Models 614 D. Molecular Dynamics Simulations 615 VIII. UV and IR Ablation 615 A. Tissue Absorption Coefficients 615 B. Ablation without Stress Confinement 617 1. Temperature Rise and Thermal Diffusion 617 2. Kinetics of Tissue Decomp...

Liquid-Phase Pulsed Laser Ablation

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Study of laser ablation using nano-second laser pulses

 In this paper, the laser ablation process based on the irradiation of nanosecond pulsed lasers on a copper target surface in the presence of Helium gas is studied. The dynamical behaviors of the generated plasma in the helium gas and evaporated copper at the atmospheric pressure are examined using a laser pulse, laser wavelength of and intensity of 7×1010W/cm2. A one-dimensional thermal model ...

Analysis of the theory of thermal damage in biological tissues caused by Laser beam

Introduction: In laser surgery, the laser beam can evaporate and cut the tissue like a small surgical knife when the tissue temperature is heated to 100 degrees Celsius. a complete understanding of the distribution of damage in both pathologic tissue and surrounding tissue is necessary. Although the test is the most realistic solution for treating medical problems, for this rea...