Soft Matter
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Recent papers in Soft Matter
M odern civilization's inherited artworks have a powerful impact on society, from political, sociological, and anthropological points of view, so the conservation of our Cultural Heritage is fundamental for conveying to future generations... more
The application of a new class of organogels as cleaning tools for painted surfaces is described. It combines some of the most attractive features of cleaning liquids and normal gels while diminishing the deleterious characteristics of... more
The present work shows that salt anions affect the activity of Pseudomonas cepacia lipase both in aqueous and in nonaqueous media (NAM) according to a Hofmeister series. The biocatalytic assay in water was the hydrolysis of p-nitrophenyl... more
The adsorption films of silica nanoparticles modified by a cationic surfactant (cetyltrimethylammonium bromide, CTAB) at the air-water interface were investigated by the dilational surface rheology and optical methods. Special attention... more
We demonstrate a method of heterogeneous vesicle binding using membrane-anchored, single-stranded DNA that can be used over several orders of magnitude in vesicle size, as demonstrated for large 100 nm vesicles and giant vesicles several... more
We undertake the investigation of sheared polymer chains grafted onto flat surfaces to model liposomes covered with polyethylene glycol brushes as a case study for the mechanisms of efficient drug delivery in biologically relevant... more
The different regimes of flow when separating two solid rough surfaces in contact via a layer of a simple yield stress fluid are identified. Generic scalings for the adhesion energy and for the geometrical characteristics of the final... more
The polysaccharide chitosan is a versatile scaffold for assembly and conjugation of biomolecules, including nucleic acids, proteins, and viruses. It provides unique value in bioMEMS in that it can be electrodeposited on demand at specific... more
Geopolymers are presented in many studies as alternatives to ordinary Portland cement. Previous studies have focused on their chemical and mechanical properties, their microstructures and their potential applications, but very few have... more
The performances of Pressure Sensitive Adhesives are generally evaluated combining tack, peel and shear tests. Using an instrumented peel test, we can link the peel and tack performances based on the identification of the pertinent strain... more
Protein-surfactant mixtures arise in many industrial and biological systems, and indeed, blood itself is a mixture of serum albumins along with various other surface-active components. Bovine serum albumin (BSA) solutions, and globular... more
Ga-doped Li-Mn-spinels Li 1.02 Ga x Mn 1.98-x O 4 with 0.00 e x e 0.20 are investigated to verify the lattice capability to allocate the Ga 3+ ions on both tetrahedral and octahedral sites and to determine the lowest amount of dopant that... more
In this paper we evaluate the environmental sustainability of a small combined heat and power (CHP) plant operating through an Organic Rankine Cycle (ORC). The heat sources of the system are from geothermal energy at low temperature... more
Soft tissues possess remarkable mechanical strength for their high water content, which is hard to mimic in synthetic materials. Here, we demonstrate how strain-induced stiffening in hydrogels plays a major role in mimicking the... more
Cell adhesion and detachment to and from the extracellular matrix (ECM) are critical regulators of cell function and fate due to the exchange of mechanical signals between the cell and its microenvironment. To study this cell... more
Particle settling is a pervasive process in nature, and centrifugation is a much versatile separation technique. Yet, the results of settling and ultracentrifugation experiments often appear to contradict the very law on which they are... more
The objective of the present study is to investigate the possibility of preparing pure protein microspheres from regenerated silk fibroin (RSF). It is found that RSF microspheres, with predictable and controllable sizes ranging from 0.2... more
The conductor-like solvation model, as developed in the framework of the polarizable continuum model (PCM), has been reformulated and newly implemented in order to compute energies, geometric structures, harmonic frequencies, and... more
During the last few years, there has been an extraordinary increase in publications describing the manifold applications of monoolein, one of the most important lipids in the fields of drug delivery, emulsion stabilization and protein... more
Two N-terminally protected dipeptides with a b-amino acid residue form hydrogels at physiological pH and temperature. These two hydrogels have been characterized by various techniques including field emission scanning electron microscopic... more
Oxygen vacancies at the SnO2(110) and (101) surface and subsurface sites have been studied in the framework of density functional theory by using both all-electron Gaussian and pseudopotential plane-wave methods. The all-electron... more
Collagen gel is a poroelastic/biphasic system consisting of a fibrillar loose lattice structure filled with .99% fluid. Its mechanical behaviour is governed by the inherent viscoelasticity of the fibrils, and their interaction with the... more
The scientific strategy of molecular gastronomy includes modelling 'culinary definitions' and experimental explorations of 'culinary precisions'. A formalism that describes complex dispersed systems leads to a physical... more
Peptide nanotubes are promising bio-inspired self-assemblies with a wide range of envisioned applications. The present review addresses the recent advances in their fundamental comprehension and mechanistic aspects of their latest... more
Nanotechnology provides new concepts and materials for the consolidation and protection of wall paintings. In particular, humble calcium and barium hydroxide nanoparticles offer a versatile and highly efficient tool to combat the main... more
M odern civilization's inherited artworks have a powerful impact on society, from political, sociological, and anthropological points of view, so the conservation of our Cultural Heritage is fundamental for conveying to future generations... more
This dissertation mainly focuses on the delicate phenomena that happen at liquid interfaces. In the introduction, I start by defining the interface and discuss its structure and the relevant interfacial forces. I then introduce the... more
Why ice floats on water is an unresolved question that underlines the special properties of water. We argue that it is resolved by taking a different approach to structure than is usual, the "exponential scale" description. The... more
The term superhydrophilicity is only 11-12 years old and was introduced just after the explosion of research on superhydrophobic surfaces, in response to demand for surfaces and coatings with exceptionally strong affinity to water. The... more
This finding has implications for future molecular simulations of solid-electrolyte interfaces and the interpretation of theoretical models predicting ion distributions or electro-kinetic transport. It will also help in the design of for... more
Une interaction est définie comme une action réciproque. Contrairement à une réaction qui transforme, l'interaction organise ou structure. Des entités en interaction peuvent alors avoir un comportement collectif cohérent. En synergétique,... more
In this work, we illustrate the usefulness of cyclodextrins, namely, methyl-β-cyclodextrin (MβCD), an amorphous, methylated derivative of the natural β-cyclodextrin (βCD), as a tool to form an inclusion complex with omeprazole (OME), a... more
Nuclear magnetic resonance spectroscopy (NMR) and imaging (MRI) are important non-destructive investigative techniques for soft matter research. Continuous advancements have not only lead to more sensitive detection, and new applications,... more