منابع مشابه
Producing desired ice faces.
The ability to prepare single-crystal faces has become central to developing and testing models for chemistry at interfaces, spectacularly demonstrated by heterogeneous catalysis and nanoscience. This ability has been hampered for hexagonal ice, Ih--a fundamental hydrogen-bonded surface--due to two characteristics of ice: ice does not readily cleave along a crystal lattice plane and properties ...
متن کاملExactly realizable desired trajectories
Trajectory tracking of nonlinear dynamical systems with affine open-loop controls is investigated. The control task is to enforce the system state to follow a prescribed desired trajectory as closely as possible. We introduce exactly realizable desired trajectories as these trajectories which can be tracked exactly by an appropriate control. Exactly realizable trajectories are characterized mat...
متن کاملThe Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity.
What makes a material a good ice nucleating agent? Despite the importance of heterogeneous ice nucleation to a variety of fields, from cloud science to microbiology, major gaps in our understanding of this ubiquitous process still prevent us from answering this question. In this work, we have examined the ability of generic crystalline substrates to promote ice nucleation as a function of the h...
متن کاملRoughening transition of prism faces of ice crystals grown from melt under pressure
By observing the crystal shapes and kinetics of ice Ih growing at high pressures from the melt, it was found that the prism f1 0 1̄ 0g faces undergo a roughening transition at approximately 16 C and 160MPa (1600 bar) in H2O ice, and 14 C and 180MPa (1800 bar) in D2O ice. At temperatures above the roughening transition, the prism facets completely vanished and the curves of growth rate versus gro...
متن کاملPrism and other high-index faces of ice crystals exhibit two types of quasi-liquid layers
Fig. S1. Schematic drawings of the experimental setups. Fig. S2. Image processing performed to obtain LCM-DIM images presented in Fig. 1A. Caption of Movie S1. The coalescence of round liquid-like droplets (α-QLLs) on prism and high-index faces. Caption of Movie S2. The appearance of thin liquid-like layers (β-QLLs) beneath αQLLs. Caption of Movie S3. The coalescence of β-QLLs on prism and high...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2015
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1513173112