Meso-scale dislocations and friction of shape-complementary soft interfaces
Meso-scale dislocations and friction of shape-complementary soft interfaces
复制标题
形状互补软界面的细观尺度位错和摩擦
DOI:
10.1098/rsif.2020.0940
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发表时间:
2021
影响因子:
3.9
通讯作者:
Jagota, Anand
中科院分区:
文献类型:
--
作者:
He, Zhenping;Liu, Zezhou;Li, Meng;Hui, Chung-Yuen;Jagota, Anand
The interface between two surfaces patterned with complementary shapes such as arrays of ridge–channel structures or pillars accommodates relative misorientation and lattice mismatch by spontaneous production of dislocation arrays. Here, we show that the relative sliding of such an interface is accomplished by dislocation glide on the interfacial plane. An exception is the singular case where the lattices are perfectly matched across the sample dimension, in which case sliding is accompanied by motion of edge-nucleated defects. These are meso-scale analogues of molecular sliding friction mechanisms between crystalline interfaces. The dislocations, in addition to the long-range elastic energy associated with their Burgers vectors, also cause significant out-of-plane dilation, which props open the interface locally. For this reason, the sliding friction is strongly pressure dependent; it also depends on the relative orientation of the patterns. Sliding friction can be strongly enhanced compared with a control, showing that shape-complementary interfaces can be engineered for strongly enhanced pressure- and orientation-dependent frictional properties in soft solids.
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影响因子:
1.8
作者:
Chateauminois, A.;Fretigny, C.
通讯作者:
Fretigny, C.
影响因子:
3.9
作者:
A. Singh;Ying Bai;Nichole Nadermann;A. Jagota;C. Hui
通讯作者:
C. Hui
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
C. Jin;A. Jagota;C. Hui
通讯作者:
C. Hui
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
J. Dillen;Zhenping He;C. Hui;A. Jagota
通讯作者:
A. Jagota
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
C. Jin;A. Jagota;C. Hui
通讯作者:
C. Hui