@article{7774,
  abstract     = {In 2005, Wyart et al. [Europhys. Lett., 2005, 72, 486] showed that the low frequency vibrational properties of jammed amorphous sphere packings can be understood in terms of a length scale, called l*, that diverges as the system becomes marginally unstable. Despite the tremendous success of this theory, it has been difficult to connect the counting argument that defines l* to other length scales that diverge near the jamming transition. We present an alternate derivation of l* based on the onset of rigidity. This phenomenological approach reveals the physical mechanism underlying the length scale and is relevant to a range of systems for which the original argument breaks down. It also allows us to present the first direct numerical measurement of l*.},
  author       = {Goodrich, Carl Peter and Ellenbroek, Wouter G. and Liu, Andrea J.},
  issn         = {1744-683X},
  journal      = {Soft Matter},
  number       = {46},
  publisher    = {Royal Society of Chemistry},
  title        = {{Stability of jammed packings I: The rigidity length scale}},
  doi          = {10.1039/c3sm51095f},
  volume       = {9},
  year         = {2013},
}

@article{7775,
  abstract     = {As a function of packing fraction at zero temperature and applied stress, an amorphous packing of spheres exhibits a jamming transition where the system is sensitive to boundary conditions even in the thermodynamic limit. Upon further compression, the system should become insensitive to boundary conditions provided it is sufficiently large. Here we explore the linear response to a large class of boundary perturbations in 2 and 3 dimensions. We consider each finite packing with periodic-boundary conditions as the basis of an infinite square or cubic lattice and study properties of vibrational modes at arbitrary wave vector. We find that the stability of such modes can be understood in terms of a competition between plane waves and the anomalous vibrational modes associated with the jamming transition; infinitesimal boundary perturbations become irrelevant for systems that are larger than a length scale that characterizes the transverse excitations. This previously identified length diverges at the jamming transition.},
  author       = {Schoenholz, Samuel S. and Goodrich, Carl Peter and Kogan, Oleg and Liu, Andrea J. and Nagel, Sidney R.},
  issn         = {1744-683X},
  journal      = {Soft Matter},
  number       = {46},
  publisher    = {Royal Society of Chemistry},
  title        = {{Stability of jammed packings II: The transverse length scale}},
  doi          = {10.1039/c3sm51096d},
  volume       = {9},
  year         = {2013},
}

@article{9049,
  abstract     = {Diffusiophoretic motion of colloids and macromolecules under salt gradients exhibits a logarithmic-sensing, i.e. the particle velocity is proportional to the spatial gradient of the logarithm of the salt concentration, as VDP = DDP∇logc. Here we explore experimentally the implications of this log-sensing behavior, on the basis of a hydrogel microfluidic device allowing to build spatially and temporally controlled gradients. We first demonstrate that the non-linearity of the salt-taxis leads to a trapping of particles under concentration gradient oscillations via a rectification of the motion. As an alternative, we make use of the high sensitivity of diffusiophoretic migration to vanishing salt concentration due to the log-sensing: in a counter-intuitive way, a vanishing gradient can lead to measurable velocity provided that the solute concentration is low enough, thus keeping ∇c/c finite. We show that this leads to a strong segregation of particles in osmotic shock configuration, resulting from a step change of the salt concentration at the boundaries. These various phenomena are rationalized on the basis of a theoretical description for the time-dependent Smoluchowski equation for the colloidal density.},
  author       = {Palacci, Jérémie A and Cottin-Bizonne, Cécile and Ybert, Christophe and Bocquet, Lydéric},
  issn         = {1744-6848},
  journal      = {Soft Matter},
  number       = {4},
  pages        = {980--994},
  publisher    = {Royal Society of Chemistry},
  title        = {{Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis}},
  doi          = {10.1039/c1sm06395b},
  volume       = {8},
  year         = {2012},
}

@article{10389,
  abstract     = {We perform numerical simulations to study self-assembly of nanoparticles mediated by an elastic planar surface. We show how the nontrivial elastic response to deformations of these surfaces leads to anisotropic interactions between the particles resulting in aggregates having different geometrical features. The morphology of the patterns can be controlled by the mechanical properties of the surface and the strength of the particle adhesion. We use simple scaling arguments to understand the formation of the different structures, and we show how the adhering particles can cause the underlying elastic substrate to wrinkle if two of its opposite edges are clamped. Finally, we discuss the implications of our results and suggest how elastic surfaces could be used in nanofabrication.},
  author       = {Šarić, Anđela and Cacciuto, Angelo},
  issn         = {1744-6848},
  journal      = {Soft Matter},
  keywords     = {condensed matter physics, general chemistry},
  number       = {18},
  publisher    = {Royal Society of Chemistry},
  title        = {{Soft elastic surfaces as a platform for particle self-assembly}},
  doi          = {10.1039/c1sm05773a},
  volume       = {7},
  year         = {2011},
}

@article{10127,
  abstract     = {We use numerical simulations to show how noninteracting hard particles binding to a deformable elastic shell may self-assemble into a variety of linear patterns. This is a result of the nontrivial elastic response to deformations of shells. The morphology of the patterns can be controlled by the mechanical properties of the surface, and can be fine-tuned by varying the binding energy of the particles. We also repeat our calculations for a fully flexible chain and find that the chain conformations follow patterns similar to those formed by the nanoparticles under analogous conditions. We propose a simple way of understanding and sorting the different structures and relate it to the underlying shape transition of the shell. Finally, we discuss the implications of our results.},
  author       = {Šarić, Anđela and Cacciuto, Angelo},
  issn         = {1744-683X},
  journal      = {Soft Matter},
  keywords     = {condensed matter physics, general chemistry},
  number       = {5},
  pages        = {1874--1878},
  publisher    = {Royal Society of Chemistry (RSC)},
  title        = {{Particle self-assembly on soft elastic shells}},
  doi          = {10.1039/c0sm01143f},
  volume       = {7},
  year         = {2010},
}