Soft Matter Journal Impact Factor & Information

Publisher: Royal Society of Chemistry (Great Britain), Royal Society of Chemistry

Journal description

Soft Matter has a global circulation and interdisciplinary audience with a particular focus on the interface between physics, materials science, biology, chemical engineering and chemistry. Soft Matter appeals to a wide variety of researchers, but particularly to: materials scientists; surface scientists; physicists; biochemists; biological scientists; chemical engineers; physical, organic and theoretical chemists.

Current impact factor: 4.15

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 4.151
2012 Impact Factor 3.909
2011 Impact Factor 4.39
2010 Impact Factor 4.457
2009 Impact Factor 4.869
2008 Impact Factor 4.586
2007 Impact Factor 4.703
2006 Impact Factor 4.391
2005 Impact Factor

Impact factor over time

Impact factor
Year

Additional details

5-year impact 4.35
Cited half-life 2.50
Immediacy index 1.01
Eigenfactor 0.07
Article influence 1.33
Website Soft Matter website
Other titles Soft matter
ISSN 1744-683X
OCLC 60788497
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Royal Society of Chemistry

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-prints on non-commercial repositories and arXiv
    • Post-print on author's personal website
    • Author's post-print on institutional repository after 12 months from acceptance
    • Publisher's version/PDF may be used on author's personal website only
    • Publisher PDF will be supplied and may be used on author's personal website only
    • RSC will deposit the authors post-print, if appropriate in non-commercial repositories, not limited to funder's repositories after 12 months
    • Restrictions on further re-use and further distribution to be noted
  • Classification
    ​ green

Publications in this journal

  • Robert Horst Meißner, Gang Wei, Lucio Colombi Ciacchi
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    ABSTRACT: Estimating the free energy of adsorption of materials-binding peptides is fundamental to quantify their interactions across bio/inorganic interfaces, but is difficult to achieve both experimentally and theoretically. We employ a combination of molecular dynamics (MD) simulations and dynamical force-spectroscopy experiments based on atomic force microscopy (AFM) to estimate the free energy of adsorption ΔGads of a (GCRL) tetrapeptide on amorphous SiO2 in pure water. The results of both equilibrium, advanced sampling MD and non-equilibrium, steered MD are compared with those of two different approaches used to extract ΔGads from the dependence of experimentally measured adhesion forces on the applied AFM loading rates. In order to obtain unambiguous peak forces and bond loading rates from steered MD trajectories, we have developed a novel numerical protocol based on a piecewise-harmonic fit of the adhesion work profile along each trajectory. The interpretation of the experiments has required a thorough quantitative characterization of the elastic properties of polyethylene glycol linker molecules used to tether (GCRL)15 polypeptides to AFM cantilevers, and of the polypeptide itself. All obtained ΔGads values fall within a relatively narrow window between -5 and -9 kcal/mol, but can be associated with large relative error bars of more than 50%. Among the different approaches compared, Replica Exchange with Solute Tempering simulations augmented with Metadynamics (RESTMetaD) and fitting of dynamic force spectroscopy experiments with the model of Friddle and De Yoreo lead to the most reliable ΔGads estimates.
    Soft Matter 07/2015; DOI:10.1039/C5SM01444A
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    ABSTRACT: One of hallmark features of glass forming ultraviscous liquids is the decoupling between translational and orientational dynamics. This report presents studies of this phenomenon in glycerol, a canonical molecular glass former, heading for the impact of two exogenic factors: high pressures up to extreme 1.5 GPa and silver (Ag) nanoparticles (NP). The analysis is focused on the fractional Debye-Stokes-Einstein (FDSE) relation sigma(T,P)*(tau(T,P))^S = const , linking DC electric conductivity and primary (alpha, structural) relaxation time. In glycerol and its nanocolloid (glycerol + Ag NP) under atmospheric pressure only the negligible decoupling (S ≈ 1) was detected. However, in the compressed nanocolloid a well-defined transformation (at P = 1.2 GPa) from S ~ 1 to the very strongly decoupled dynamics (S ≈ 0.5) occurred. For comparison, in pressurized ‘pure’ glycerol the stretched shift from S ≈ 1 to S ≈ 0.7 took place. This report presents also the general discussion of FDSE behavior in ultraviscous liquids, including the new link between FDSE exponent, fragility and the apparent activation enthalpy and volume.
    Soft Matter 06/2015; DOI:10.1039/c5sm00266d
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    ABSTRACT: We use computer simulations to test the freezing-point scaling relationship between equilibrium transport coefficients (self- diffusivity, viscosity) and thermodynamic parameters for soft sphere fluids. The fluid particles interact via the inverse-power potential (IPP), and the particle softness is changed by modifying the exponent of the distance-dependent potential term. In the case of IPP fluids, density and temperature are not independent variables and can be combined to obtain a coupling parameter to define the thermodynamic state of the system. We find that the rescaled coupling parameter, based on its value at the freezing point, can approximately collapse the diffusivity and viscosity data for IPP fluids over a wide range of particle softness. Even though the collapse is far from perfect, the freezing-point scaling relationship provides a convenient and effective way to compare the structure and dynamics of fluid systems with different particle softness. We further show that an alternate scaling relationship based on two-body excess entropy can provide an almost perfect collapse of the diffusivity and viscosity data below the freezing transition. Next, we perform nonequilibrium molecular dynamics simulations to calculate the shear-dependent viscosity and to identify the distinct role of particle softness in underlying structural changes associated with rheological properties. Qualitatively, we find a similar shear-thinning behavior for IPP fluids with different particle softness, though softer particles exhibit stronger shear-thinning tendency. By investigating the distance and angle-dependent pair correlation functions in these systems, we find different structural features in the case of IPP fluids with hard-sphere like and softer particle interactions. Interestingly, shear- thinning in hard-sphere like fluids is accompanied by enhanced translational order, whereas softer fluids exhibit loss of order with shear. Our results provide a systematic evaluation of the role of particle softness in equilibrium and nonequilibrium transport properties and their underlying connection with thermodynamic and structural properties.
    Soft Matter 06/2015; DOI:10.1039/C5SM00637F
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    ABSTRACT: We use fluorescent confocal polarised microscopy (FCPM) to study tubular growth upon hydration of dry DOPC (1,2-dioleoylsn- glycero-3-phosphocholine) in water or water-glycerol mixtures. We have developed a model to relate the FCPM intensity profiles to the multilamellar structures of the tubules. Insertion of an additional patch inside a tubule produces a beaded structure, while a straight configuration is retained if the growth is on the outside. We use a simple model to argue that a reduction in overall curvature energy drives bead formation.
    Soft Matter 05/2015; DOI:10.1039/C5SM00793C
  • Soft Matter 01/2015; 11(8):1646-1646. DOI:10.1039/c5sm90023a
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    ABSTRACT: Multilamellar membranes are important building blocks for constructing self-assembled structures with improved barrier properties, such as multilamellar lipid vesicles. Polymeric vesicles (polymersomes) have attracted growing interest, but multilamellar polymersomes are much less explored. Here, we report the formation of polypeptide vesicles with unprecedented densely packed multilayer membrane structures with poly(ethylene glycol)-block-poly(γ-(4,5-dimethoxy-2-nitrobenzyl)-L-glutamate) (PEG-b-PL), an amphiphilic diblock rod-coil copolymer containing a short PEG block and a short hydrophobic rod-like polypeptide segment. The polypeptide rods undergo smectic ordering with PEG buried between the hydrophobic polypeptide layers. The size of both blocks and the rigidity of the hydrophobic polypeptide block are critical in determining the membrane structures. Increase of the PEG length in PEG-b-PL results in the formation of bilayer sheets, while using random-coil polypeptide block leads to the formation of large compound micelles. UV treatment causes ester bond cleavage of the polypeptide side chain, which induces helix-to-coil transition, change of copolymer amphiphilicity, and eventual disassembly of vesicles. These polypeptide vesicles with unique membrane structures provide a new insight into self-assembly structure control by precisely tuning the composition and conformation of polymeric amphiphiles.
    Soft Matter 01/2015; 11(20):4091-4098. DOI:10.1039/C5SM00820D
  • Soft Matter 01/2015; 11(1):10-11. DOI:10.1039/c4sm90158d
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    ABSTRACT: We study in the melt the linear viscoelastic properties of supramolecular assemblies obtained by adding different amounts of nickel ions to linear entangled poly(ethylene oxide) (PEO) building blocks end-functionalized by a terpyridine group. We first show that the elasticity of these supramolecular assemblies is mainly governed by the entanglement dynamics of the building blocks, while the supramolecular interactions delay or suppress their relaxation. By adjusting the amount of metal ions, the relaxation time as well as the level of the low-frequency plateau of these supramolecular assemblies can be controlled. In particular, the addition of metal ions above the 1 : 2 metal ion/terpyridine stoichiometric ratio allows secondary supramolecular interactions to appear, which are able to link the linear supramolecular assemblies and thus, lead to the reversible gelation of the system. By comparing the rheological behavior of different linear PEO samples, bearing or not functionalized chain-ends, we show that these extra supramolecular bonds are partially due to the association between the excess of metal ions and the oxygen atoms of the PEO chains. We also investigate the possible role played by the terpyridine groups in the formation of these secondary supramolecular interactions.
    Soft Matter 12/2014; 11(4):762-774. DOI:10.1039/c4sm02319f
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    ABSTRACT: DNA compaction in a bacterial cell is in part carried out by entropic (depletion) forces induced by "free" proteins or crowding particles in the cytoplasm. Indeed, recent in vitro experiments highlight these effects by showing that they alone can condense the E. coli chromosome to its in vivo size. Using molecular dynamics simulations and a theoretical approach, we study how a flexible chain molecule can be compacted by crowding particles with variable sizes in a (cell-like) cylindrical space. Our results show that with smaller crowding agents the compaction occurs at a lower volume fraction but at a larger concentration such that doubling their size is equivalent to increasing their concentration fourfold. Similarly, the effect of polydispersity can be correctly mimicked by adjusting the size of crowders in a homogeneous system. Under different conditions, however, crowding particles can induce chain adsorption onto the cylinder wall, stretching the chain, which would otherwise remain condensed.
    Soft Matter 12/2014; 11(10). DOI:10.1039/c4sm02198c
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    ABSTRACT: Scientists aspire to understand the underlying physics behind the formation of instabilities in soft matter and how to manipulate them for diverse investigations, while engineers aim to design materials that inhibit or impede the nucleation and growth of these instabilities in critical applications. The present paper reviews the field-induced rotational instabilities which may occur in chiral smectic liquid-crystalline layers when subjected to an asymmetric electric field. Such instabilities destroy the so-named bookshelf geometry (in which the smectic layers are normal to the cell surfaces) and have a detrimental effect on all applications of ferroelectric liquid crystals as optical materials. The transformation of the bookshelf geometry into horizontal chevron structures (in which each layer is in a V-shaped structure), and the reorientation dynamics of these chevrons, are discussed in details with respect to the electric field conditions, the material properties and the boundary conditions. Particular attention is given to the polymer-stabilisation of smectic phases as a way to forbid the occurrence of instabilities and the decline of related electro-optical performances. It is also shown which benefit may be gained from layer instabilities to enhance the alignment of the liquid-crystalline geometry in practical devices, such as optical recording by ferroelectric liquid crystals. Finally, the theoretical background of layer instabilities is given and discussed in relation to the experimental data.
    Soft Matter 12/2014; 11(5). DOI:10.1039/c4sm02505a