Excitation of coherent vibrations of different-sized polystyrene nanospheres at their acoustic eigenmodes in aqueous suspensions is observed in the laser pulse field. To substantiate the observed features, a model of interaction of an electromagnetic field with a dielectric in heterogenous media is developed which allows eigenmodes of nanospheres in a suspension to be calculated. The estimations are in satisfactory agreement with the experimental data.

中文翻译：

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悬浮液中介电纳米球相干振动的激光脉冲激励

在激光脉冲场中观察到在水悬浮液中不同尺寸的聚苯乙烯纳米球在其声学本征模下的相干振动的激发。为了证实观察到的特征，建立了异质介质中电磁场与电介质相互作用的模型，该模型可以计算悬浮液中纳米球的本征模。估计与实验数据令人满意。