This study demonstrates the susceptibility of the Escherichia coli and Bacillus subtilis planktonic bacteria to inactivation by shock acoustic waves that arise from the rapid formation and collapse of vapor bubbles in a medium locally heated to its boiling point. Local heating of the medium occurred due to heat release through the relaxation of highly excited electronic states of exogenous molecules of organic dyes. Dye molecules were excited by nanosecond laser pulses. Highly excited electronic states were formed as a result of stepwise absorption of two quanta of laser radiation. The dependence of the efficiency of microorganism inactivation on the dye concentration, excitation power density, and the distance from the shock wave source was studied.

这项研究表明，大肠杆菌和枯草芽孢杆菌的浮游细菌易受激振声波的破坏，激波声波是在局部加热到沸点的介质中迅速形成和破裂的汽泡而引起的。介质的局部加热是由于通过释放有机染料的外源分子的高激发电子态而释放热量而发生的。染料分子被纳秒激光脉冲激发。由于逐步吸收了两个量子的激光辐射，形成了高度激发的电子态。研究了微生物灭活效率对染料浓度，激发功率密度和与冲击波源的距离的依赖性。