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Archimedean lattices emerge in template-directed eutectic solidification 期刊论文
NATURE, 2020, 577 (7790) : 355-+
作者:  Subbaraman, Nidhi;  Viglione, Giuliana
收藏  |  浏览/下载:9/0  |  提交时间:2020/07/03

Template-directed assembly has been shown to yield a broad diversity of highly ordered mesostructures(1),(2), which in a few cases exhibit symmetries not present in the native material(3-5). However, this technique has not yet been applied to eutectic materials, which underpin many modern technologies ranging from high-performance turbine blades to solder alloys. Here we use directional solidification of a simple AgCl-KCl lamellar eutectic material within a pillar template to show that interactions of the material with the template lead to the emergence of a set of microstructures that are distinct from the eutectic'  s native lamellar structure and the template'  s hexagonal lattice structure. By modifying the solidification rate of this material-template system, trefoil, quatrefoil, cinquefoil and hexafoil mesostructures with submicrometre-size features are realized. Phase-field simulations suggest that these mesostructures appear owing to constraints imposed on diffusion by the hexagonally arrayed pillar template. We note that the trefoil and hexafoil patterns resemble Archimedean honeycomb and square-hexagonal-dodecagonal lattices(6), respectively. We also find that by using monolayer colloidal crystals as templates, a variety of eutectic mesostructures including trefoil and hexafoil are observed, the former resembling the Archimedean kagome lattice. Potential emerging applications for the structures provided by templated eutectics include non-reciprocal metasurfaces(7), magnetic spin-ice systems(8,9), and micro- and nano-lattices with enhanced mechanical properties(10,11).


  
The Shape and Density Evolution of Snow Aggregates 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (12) : 3919-3940
作者:  Dunnavan, Edwin L.;  Jiang, Zhiyuan;  Harrington, Jerry Y.;  Verlinde, Johannes;  Fitch, Kyle;  Garrett, Timothy J.
收藏  |  浏览/下载:6/0  |  提交时间:2020/02/17
Atmosphere  Cloud microphysics  Ice crystals  Ice particles  Surface observations  Cloud parameterizations  
Sensitivity of Lake-Effect Cloud Microphysical Processes to Ice Crystal Habit and Nucleation during OWLeS IOP4 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (11) : 3411-3434
作者:  Gaudet, Lauriana C.;  Sulia, Kara J.;  Yu, Fangqun;  Luo, Gan
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
Ice crystals  Mesoscale systems  Sensitivity studies  Cloud parameterizations  Lake effects  
On Calculating Deposition Coefficients and Aspect-Ratio Evolution in Approximate Models of Ice Crystal Vapor Growth 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (6) : 1609-1625
作者:  Harrington, Jerry Y.;  Moyle, Alfred;  Hanson, Lavender Elle;  Morrison, Hugh
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/26
Cloud microphysics  Ice crystals  Ice loss  growth  Ice particles  Cloud parameterizations  
A General Method for Estimating Bulk 2D Projections of Ice Particle Shape: Theory and Applications 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (1) : 305-332
作者:  Dunnavan, Edwin L.;  Jiang, Zhiyuan
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
Cloud microphysics  Ice crystals  Ice particles  Aircraft observations  In situ atmospheric observations  Model comparison  
Analysis of the Global Microwave Polarization Data of Clouds 期刊论文
JOURNAL OF CLIMATE, 2019, 32 (1) : 3-13
作者:  Zeng, Xiping;  Skofronick-Jackson, Gail;  Tian, Lin;  Emory, Amber E.;  Olson, William S.;  Kroodsma, Rachael A.
收藏  |  浏览/下载:22/0  |  提交时间:2019/04/09
Clouds  Cloud microphysics  Ice crystals  Microwave observations  Radars  Radar observations  
A Numerical Study on the Aerodynamics of Freely Falling Planar Ice Crystals 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2018, 75 (9) : 2849-2865
作者:  Nettesheim, Joseph J.;  Wang, Pao K.
收藏  |  浏览/下载:3/0  |  提交时间:2019/04/09
Clouds  Ice crystals  
A fast hybrid (3-D/1-D) model for thermal radiative transfer in cirrus via successive orders of scattering 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2017, 122 (1)
作者:  Fauchez, Thomas;  Davis, Anthony B.;  Cornet, Celine;  Szczap, Frederic;  Platnick, Steven;  Dubuisson, Philippe;  Thieuleux, Francois
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/09
cirrus  3-D radiative transfer  thermal infrared  scattering by ice crystals