03.07.2018 | Marek Bukowicki; Maria L Ekiel-Jezewska, Soft Matter, 2018

The main goal of this paper is to examine theoretically and numerically the impact of a chosen bending model on dynamics of elastic filaments settling in a viscous fluid under gravity at low-Reynolds-number. We use the bead-spring approximation of a filament and Rotne-Prager mobility matrix to ...

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03.07.2018 | Robert Style; Brandon A Krick; Katherine Jensen; W. Gregory Sawyer, Soft Matter, 2018

In the fall of 2015, Martin M\'user suggested a Contact Mechanics Challenge for the Tribology community. The challenge was an ambitious effort to compare a wide variety of theoretical and computational contact mechanics approaches, and involved researchers voluntarily tackling the same ...

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03.07.2018 | Nicholas Beaton; Jeremy Eng; Kai Ishihara; Koya Shimokawa; Christine Soteros, Soft Matter, 2018

Using a lattice model of polymers in a tube, we define one way to characterise different configurations of a given knot as either 'local' or 'non-local', based on a standard approach for measuring the 'size' of a knot within a knotted polymer chain. The method involves associating knot-types to ...

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03.07.2018 | Ana Maria Diez Pascual; Cristina Vallés; Rocio Mateos; Soledad Vera; Ian A. Kinloch; María Paz San Andrés, Soft Matter, 2018

The effects of surfactants of different nature (anionic, cationic and non-ionic) and chain length on the morphology, microstructure, thermal stability and electrical resistivity of liquid exfoliated graphene (G) were investigated. Microscopic (SEM and AFM) observations revealed that the thickness ...

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03.07.2018 | Ahmed Owais; Truis Smith-Palmer; Angus Gentle; Chiara Neto, Soft Matter, 2018

Underwater superoleophobic surfaces can be considered a particular type of lubricant-infused surface, that have anti-fouling properties by virtue of a trapped water layer that repels oils. However, as their function relies on a water layer being trapped in the surface roughness, it is crucial to ...

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03.07.2018 | Matthew Wehrman; Seth Lindberg; Kelly M Schultz, Soft Matter, 2018

Multiple particle tracking microrheology (MPT) is a powerful tool for quantitatively characterizing rheological properties of soft matter. Traditionally, MPT uses a single particle size to characterize rheological properties. But in complex systems, MPT measurements with a single size particle ...

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03.07.2018 | Aleksandar Popadić; Daniel Svenšek; Rudolf Podgornik; Kostas Daoulas; Matej Praprotnik, Soft Matter, 2018

A main-chain nematic polymer melt/solution exhibits macroscopic orientational order of main polymer chains, i.e., a preferred (nematic) direction. It has long been known that in such polymeric liquid crystals spatial density/concentration variations and distortions of the nematic direction are ...

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03.07.2018 | Yael Avni; David Andelman; Tomer Markovich; Rudolf Podgornik, Soft Matter, 2018

We revisit the charge-regulation mechanism of macro-ions and apply it to mobile macro-ions in a bathing salt solution. In particular, we examine the effects of correlation between various adsorption/desorption sites and analyze the collective behavior in terms of the solution effective screening ...

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03.07.2018 | Juan Peng; Huina Cui; Xiaosong Chen; Yue Wang; Feng Qiu; Dacheng Wei, Soft Matter, 2018

One-dimensional (1D) helical nanofibers were yielded through the self-assembly of an achiral all-conjugated diblock copolymer, poly(3-hexylthiophene)-b-poly[3-(6-hydroxyl)hexylthiophene] (P3HT-b-P3HHT) in the aged pyridine solution. Such helical nanofibers were formed driven by the π-π ...

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03.07.2018 | Kyle Miller; Ayuna Tsyrenova; Stephen M Anthony; Shiyi Qin; Xin Yong; Shan Jiang, Soft Matter, 2018

Amphiphilic Janus particles demonstrate unique assembly structures when dried on a hydrophilic substrate. Particle orientations are influenced by amphiphilicity and Janus balance. A three-stage model is developed to describe the process. Simulation further indicates the dominant force is ...

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