论文标题
部分可观测时空混沌系统的无模型预测
Can vibrational sum frequency scattering spectra be measured from the surface of 40-100 nm aerosols in a cloud containing 10$^{6}$ particles/mL?
论文作者
论文摘要
了解气溶胶颗粒的界面特性对于科学和医学至关重要，对于空气质量，人类健康和环境化学至关重要。 Qian等。所提供的振动总和频率散射（SFS）测量有机分子在气溶胶颗粒上的测量。$^{1} $将气溶胶样品与40 nm的平均大小和10-300 nm粒径分布在10 $^{6} $粒子/ml的振动频率播放的播放频谱上，该表面上的弹性频谱的振动频谱的播放频谱，该弹性的播放是在不同的表面上，该弹性的播放是，该弹性是在不同的表面上进行的，该表面是在不同的表面上，该表面是该样品的播放。气溶胶中的颗粒。在这里，我们表明，如此小的粒子的SF散射能力为10 $^{6} $粒子/ml是$ \ sim $ 10 $^{7} $，小于提出的SFS实验的检测极限。我们在理论上和实验上确定颗粒的可检测数量密度，以证明SFS方法的限制。我们还提出了10 $^{7} $数量级差异的可能原因。
Understanding the interfacial properties of aerosol particles is important for science and medicine, crucial for air quality, human health, and environmental chemistry. Qian et al. presented vibrational sum frequency scattering (SFS) measurements of organic molecules on aerosol particles.$^{1}$ Relating an aerosol sample with a 40 nm average size and 10 - 300 nm particle size distribution at a density of 10$^{6}$ particle/mL to vibrational sum frequency scattering spectra recorded in a different apparatus, it was concluded that the vibrational spectra reported on the surface structure of the particles in the aerosol. Here, we show that the SF scattering power of such small particles with a density of 10$^{6}$ particle/mL is $\sim$ 10$^{7}$ smaller than the detection limit of the presented SFS experiment. We determine the detectable number density of particles, both theoretically and experimentally, to demonstrate the limits of the SFS method. We also propose possible reasons for the 10$^{7}$ order of magnitude discrepancy.
