Rearrangement of two dimensional aggregates of droplets under compression: Signatures of the energy landscape from crystal to glass

Rearrangement of two dimensional aggregates of droplets under compression: Signatures of the energy landscape from crystal to glass
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压缩下二维液滴聚集体的重新排列:从晶体到玻璃的能量景观特征

DOI:
10.1103/physrevresearch.2.023070
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发表时间:
2020
影响因子:
4.2
通讯作者:
Dalnoki-Veress, Kari
Dalnoki-Veress, Kari
中科院分区:
--
文献类型:
--
作者:
Ono-dit-Biot, Jean-Christophe;Soulard, Pierre;Barkley, Solomon;Weeks, Eric R.;Salez, Thomas;Raphaël, Elie;Dalnoki-Veress, Kari

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我们通过压缩二维(2D)有限的油滴聚集体来研究能量景观通过晶体到玻璃转变的演化特征。两种不同尺寸的液滴用于在水性环境中组成小聚集体。聚集体的范围从完全有序的单分散单晶到无序的双分散玻璃。聚集体被压缩在两个平行的边界之间,其中一个用作力传感器。压缩力提供了聚集体组成的特征,并提供了对能源前景的洞察。特别是,晶体通过单一的灾难性断裂事件耗散所有储存的能量,而玻璃状聚集体逐步破裂。值得注意的是,即使少量的无序也会强烈影响2D聚集体的屈服性质。
We study signatures of the energy landscape's evolution through the crystal-to-glass transition by compressing two dimensional (2D) finite aggregates of oil droplets. Droplets of two distinct sizes are used to compose small aggregates in an aqueous environment. Aggregates range from perfectly ordered monodispersesinglecrystals to disordered bidisperse glasses. The aggregates are compressed between two parallel boundaries, with one acting as a force sensor. The compression force provides a signature of the aggregate composition and gives insight into the energy landscape. In particular, crystals dissipate all the stored energy through single catastrophic fracture events whereas the glassy aggregates break step by step. Remarkably, the yielding properties of the 2D aggregates are strongly impacted by even a small amount of disorder.
老化二元胶体玻璃的动力学和结构。
DOI: --
发表时间: 2008
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
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