Video: Coalescence of Drops on Soft Solids - A Delay

This work provides an up-to-date overview of recent developments in neutron spectroscopic techniques and associated computational tools to interrogate the structural properties and dynamical behavior of complex and disordered materials, with a focus on those of a soft and polymeric nature. These have and continue to pave the way for new scientific opportunities simply thought unthinkable not so long ago, and have particularly benefited from advances in high-resolution, broadband techniques spanning energy transfers from the meV to the eV. Topical areas include the identification and robust assignment of low-energy modes underpinning functionality in soft solids and supramolecular frameworks, or the quantification in the laboratory of hitherto unexplored nuclear quantum effects dictating thermodynamic properties. In addition to novel classes of materials, we also discuss recent discoveries around water and its phase diagram, which continue to surprise us. All throughout, emphasis is placed on linking these ongoing and exciting experimental and computational developments to specific scientific questions in the context of the discovery of new materials for sustainable technologies.

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The Effect of Void Arrangement on the Pattern Transformation of Porous Soft Solids under Biaxial Loading

Materials ◽

10.3390/ma14051205 ◽

2021 ◽

Vol 14 (5) ◽

pp. 1205

Author(s):

Hai Qiu ◽

Ying Li ◽

Tianfu Guo ◽

Shan Tang ◽

Zhaoqian Xie ◽

...

Keyword(s):

Biaxial Loading ◽

Tensile Deformation ◽

Biaxial Stress ◽

Porous Solids ◽

Biaxial Compression ◽

Structural Topology ◽

Soft Solids ◽

Tension And Compression ◽

Inclined Angle ◽

Pattern Transformation

Structural topology and loading condition have important influences on the mechanical behaviors of porous soft solids. The porous solids are usually set to be under uniaxial tension or compression. Only a few studies have considered the biaxial loads, especially the combined loads of tension and compression. In this study, porous soft solids with oblique and square lattices of circular voids under biaxial loadings were studied through integrated experiments and numerical simulations. For the soft solids with oblique lattices of circular voids, we found a new pattern transformation under biaxial compression, which has alternating elliptic voids with an inclined angle. This kind of pattern transformation is rarely reported under uniaxial compression. Introducing tensile deformation in one direction can hamper this kind of pattern transformation under biaxial loading. For the soft solids with square lattices of voids, the number of voids cannot change their deformation behaviors qualitatively, but quantitatively. In general, our present results demonstrate that void morphology and biaxial loading can be harnessed to tune the pattern transformations of porous soft solids under large deformation. This discovery offers a new avenue for designing the void morphology of soft solids for controlling their deformation patterns under a specific biaxial stress-state.

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On the character of acoustic waves at the interface between hard and soft solids and liquids

The Journal of the Acoustical Society of America ◽

10.1121/1.1396333 ◽

2001 ◽

Vol 110 (3) ◽

pp. 1299-1306 ◽

Cited By ~ 58

Author(s):

Christ Glorieux ◽

Kris Van de Rostyne ◽

Keith Nelson ◽

Weimin Gao ◽

Walter Lauriks ◽

...

Keyword(s):

Acoustic Waves ◽

Soft Solids

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Flow of soft solids squeezed between planar and spherical surfaces

Rheologica Acta ◽

10.1007/s00397-005-0437-4 ◽

2005 ◽

Vol 44 (6) ◽

pp. 563-572 ◽

Cited By ~ 9

Author(s):

Gerald Henry Meeten

Keyword(s):

Soft Solids ◽

Spherical Surfaces

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A methodology for modeling surface effects on stiff and soft solids

Computational Mechanics ◽

10.1007/s00466-017-1474-4 ◽

2017 ◽

Vol 61 (6) ◽

pp. 687-697 ◽

Cited By ~ 5

Author(s):

Jin He ◽

Harold S. Park

Keyword(s):

Surface Effects ◽

Soft Solids

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Soft Solids

Food Science and Technology - Physical Chemistry of Foods ◽

10.1201/9780203910436.ch17 ◽

2002 ◽

Keyword(s):

Soft Solids

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Contact lines on stretched soft solids: modelling anisotropic surface stresses

Proceedings of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rspa.2020.0673 ◽

2021 ◽

Vol 477 (2245) ◽

pp. 20200673

Author(s):

Stefanie Heyden ◽

Nicolas Bain ◽

Qin Xu ◽

Robert W. Style ◽

Eric R. Dufresne

Keyword(s):

Soft Matter ◽

Liquid Droplet ◽

Substrate Surface ◽

Contact Lines ◽

Soft Substrate ◽

Soft Solids ◽

Anisotropic Surface ◽

Surface Profiles ◽

Free Parameters ◽

Lamé Coefficients

We present fully analytical solutions for the deformation of a stretched soft substrate due to the static wetting of a large liquid droplet, and compare our solutions to recently published experiments (Xu et al. 2018 Soft Matter 14, 916–920 (doi:10.1039/C7SM02431B)). Following a Green’s function approach, we extend the surface-stress regularized Flamant–Cerruti problem to account for uniaxial pre-strains of the substrate. Surface profiles, including the heights and opening angles of wetting ridges, are provided for linearized and finite kinematics. We fit experimental wetting ridge shapes as a function of applied strain using two free parameters, the surface Lamé coefficients. In comparison with experiments, we find that observed opening angles are more accurately captured using finite kinematics, especially with increasing levels of applied pre-strain. These fits qualitatively agree with the results of Xu et al ., but revise values of the surface elastic constants.

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