Ardian B. Gojani

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In Extracorporeal Shock Wave Lithotripsy (ESWL) underwater shock wave focusing generates high pressures at very short duration of time inside human body. However, it is not yet clear how high temperatures are enhanced at the spot where a shock wave is focused. The estimation of such dynamic temperature enhancements is critical for the evaluation of tissue(More)
Following the first shock wave generation and the successive single bubble expansion after the breakdown by the Nd:YAG laser pulse with 35 mJ and 10 ns in distilled water, the strong secondary shock wave is generated at the instant of the bubble collapse. The single bubble expands up to 0.59 mm in radius, and then closes up by the pressure difference(More)
Irradiation of a high-power laser pulse (above 10(9)W/cm(2)) on thin metal foil causes ablation, which is characterized by a strong plasma-shock formation followed by a rapid expulsion of surface matter. The shock propagates through the foil and reverberates on the rear side causing instant deformation of the metal foil, whose surface is treated with(More)
Quantitative measurements of fluid flow properties can be achieved by background-oriented schlieren (BOS). In this paper, it is shown that this depends on several factors. Image-quality index is used to investigate the influence of the image sensor and the quality of its output. Image evaluation is applied to synthetic images, which are treated with a step(More)
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