期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 19, 期 46, 页码 31186-31193出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp04898j
关键词
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资金
- Natural Environment Research Council (NERC) [NE/I013466/1, NE/I020059/1, NE/K004417/1, NE/I019057/1, NE/M010473/1]
- European Research Council (ERC) [240449, 632272, 648661, 713664]
- Engineering and Physical Sciences Research Council (EPSRC) [EP/M003027/1, EP/N002423/1]
- Leverhulme Trust [RPG-2014-306]
- Engineering and Physical Sciences Research Council [EP/M003027/1, EP/N002423/1] Funding Source: researchfish
- Natural Environment Research Council [NE/K004417/1, NE/I020059/1, 1047972, NE/I013466/1] Funding Source: researchfish
- EPSRC [EP/M003027/1, EP/N002423/1] Funding Source: UKRI
- NERC [NE/K004417/1, NE/I019057/1, NE/I020059/1, NE/I013466/1] Funding Source: UKRI
- European Research Council (ERC) [713664, 240449, 632272] Funding Source: European Research Council (ERC)
Our understanding of crystal nucleation is a limiting factor in many fields, not least in the atmospheric sciences. It was recently found that feldspar, a component of airborne desert dust, plays a dominant role in triggering ice formation in clouds, but the origin of this effect was unclear. By investigating the structure/property relationships of a wide range of feldspars, we demonstrate that alkali feldspars with certain microtextures, related to phase separation into Na and K-rich regions, show exceptional icenucleating abilities in supercooled water. We found no correlation between ice-nucleating efficiency and the crystal structures or the chemical compositions of these active feldspars, which suggests that specific topographical features associated with these microtextures are key in the activity of these feldspars. That topography likely acts to promote ice nucleation, improves our understanding of ice formation in clouds, and may also enable the design and manufacture of bespoke nucleating materials for uses such as cloud seeding and cryopreservation.
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