论文标题
光分子效应：在水蒸气界面处的可见光吸收
Photomolecular Effect: Visible Light Absorption at Water-Vapor Interface
论文作者
论文摘要
水的蒸发本质和工业技术无处不在。蒸发的已知机制是“热蒸发”，它突出了蒸发的能量输入是通过热量的。由于水吸收到可见光下，使用太阳能蒸发水的第一步通常是通过通过其他吸收材料将其通过光热过程转化为热能。与这种传统的智慧相反，我们在这里报告了在水蒸气界面可见光谱中通过直接裂解水簇通过我们称之为光分子效应的过程来吸收光子。我们表明，通过测量光子分子蒸发速率对波长，入射角和入射光极化的依赖性，这一过程发生在水蒸气界面上。蒸气相中的光谱特征进一步支持了分子效应。尽管大量水中可见光的繁殖长度很长，但我们证明它们可以轻松加热一层薄薄的雾，这表明此过程无处不在。光分子效应将对地球的水周期，全球变暖，植物蒸腾以及涉及液体从干燥到发电的液体蒸发的不同技术具有重大影响
The evaporation of water is ubiquitous in nature and industrial technologies. The known mechanism for evaporation is "thermal evaporation" which highlights the energy input for evaporation is via heat. Due to the weak absorption of water to visible light, the first step to using solar energy to evaporate water is usually by converting it into thermal energy through photothermal processes via additional absorbing materials. Contrary to this conventional wisdom, we report here strong absorption of photons in the visible spectrum at the water-vapor interface by direct cleavage of water clusters via a process we call photomolecular effect. We show that this process happens at the water-vapor interface by measuring the dependence of the photomolecular evaporation rate on the wavelength, the angle of incidence, and the polarization of the incident light. The spectra signatures in the vapor phase further support the photomolecular effect. Despite the long propagation lengths of visible light in bulk water, we demonstrate that they can heat a thin layer of fog easily, suggesting that this process is ubiquitous. The photomolecular effect will have significant implications for the earth's water cycle, global warming, plant transpiration, as well as different technologies involving the evaporation of liquids from drying to power generation
