Lapotko Dmitri
Laser Cytotechnology Laboratory, A. V .Lykov Heat- and Mass-Transfer Institute, 15 Brovka Street, Minsk, 220072, Belarus.
Opt Express. 2009 Feb 16;17(4):2538-56. doi: 10.1364/oe.17.002538.
Laser-induced generation of the vapor bubbles in water around plasmonic nanoparticles was experimentally studied with optical scattering methods. Nanoparticle-generated bubbles temporally and spatially localize laser-induced thermal field and also amplify optical scattering relatively to that of gold nanoparticles. Bubble lifetimes and threshold fluencies were determined as functions of the laser (pulse duration, fluence, inter-pulse interval), nanoparticle (size, shape, aggregation state) and sample chamber parameters so to optimize bubble generation around plasmonic nanoparticles. Nanoparticle-generated bubbles are suggested as nano-scaled optical sensors and sources of localized thermal and mechanical impact.
利用光学散射方法对激光诱导等离激元纳米粒子周围水中产生蒸汽泡进行了实验研究。纳米粒子产生的气泡在时间和空间上定位激光诱导的热场，并且相对于金纳米粒子还会放大光散射。确定了气泡寿命和阈值通量作为激光（脉冲持续时间、通量、脉冲间隔）、纳米粒子（尺寸、形状、聚集状态）和样品腔参数的函数，以便优化等离激元纳米粒子周围的气泡产生。纳米粒子产生的气泡被认为是纳米级光学传感器以及局部热和机械冲击源。
