We experimentally register stimulated low-frequency Raman scattering (SLFRS) in the suspension of brome mosaic virus (BMV) in phosphate buffer with very high conversion efficiency. We identify two components of the SLFRS spectrum as the breathing and quadrupole modes of BMV and determine damping characteristics and gain factors for these modes. We show that, using the core–shell model for BMV and taking into account the influence of the environment, the acoustic properties of individual components of such a composite nanosystem can be determined. Thus, we define the sound velocity in the RNA core of BMV, in view of spectral characteristics of SLFRS.

中文翻译：

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受刺激的低频拉曼散射在凤梨花叶病毒中

我们通过实验记录了溴化花叶病毒（BMV）在磷酸盐缓冲液中的悬浮液中的激发低频拉曼散射（SLFRS），具有很高的转换效率。我们确定SLFRS频谱的两个分量为BMV的呼吸和四极模式，并确定这些模式的阻尼特性和增益因子。我们表明，使用BMV的核壳模型并考虑到环境的影响，可以确定这种复合纳米系统各个成分的声学特性。因此，鉴于SLFRS的光谱特征，我们定义了BMV RNA核心中的声速。