Concept

Colloid

Related publications (256)

Formation of security paper e.g. banknote with colored marking involves providing photosensitive preparation comprising substance which produces colloidal metal particles under UV irradiation effect on a portion of the document

A process for providing a security paper, in particular a banknote, with a coloured marking, comprising providing a photosensitive preparation on a portion of said document and submitting at least selected areas of said portion to a light beam, wherein sai ...

KBA GIORI SA (SKBA) HOFFMAN P (HOFF-Individual) BRET T (BRET-Individual) MOREAU V (MORE-Individual)2003

Activated Bond-Breaking Processes Preempt the Observation of a Sharp Glass-Glass Transition in Dense Short-Ranged Attractive Colloids

Giuseppe Foffi, Francesco Sciortino

We study—using molecular dynamics simulations—the temperature dependence of the dynamics in a dense short-ranged attractive colloidal glass to find evidence of the kinetic glass-glass transition predicted by the ideal mode coupling theory. According to the ...

2003

Precise Determination of the Hydrophobic/Hydrophilic Junction in Polymeric Vesicles

Jeffrey Alan Hubbell, Nicola Tirelli

In the present paper, we present a complete characterization of the propylene sulfide-ethylene glycol triblock copolymers (PPS-PEG) at a mol. level, and as lyotropic aggregates, with the precise localization of the hydrophilic/hydrophobic border of their v ...

2003

Static and dynamical correlation functions behaviour in attractive colloidal systems from theory and simulation

Giuseppe Foffi, Francesco Sciortino

We present comparisons of theoretical and simulation results for static and dynamical correlation functions for a very simple model of attractive colloidal systems, the short-ranged square-well potential. In the region of the phase diagram investigated, th ...

2003

Solution versus vapor growth of dipolar layers on activated oxide substrates

Frank Nüesch, Libero Zuppiroli, Michel Carrara

Monolayer adsorption of benzoic acid derivatives on activated oxide surfaces from solution and from the vapor phase are investigated with the view of modifying the work function of a conductive substrate. Para-substituted benzoic acids with a wide range of ...

American Chemical Society2003

Universal non-diffusive slow dynamics in aging soft matter

Suliana Manley

We use conventional and multispeckle dynamic light scattering to investigate the dynamics of a wide variety of jammed soft materials, including colloidal gels, concentrated emulsions, and concentrated surfactant phases. For all systems, the dynamic structu ...

2003

Ideal glass in attractive systems with different potentials

Giuseppe Foffi, Francesco Sciortino

We discuss the ideal glass transition for two types of potential model of attractive colloidal systems, i.e. the square-well system and the Yukawa hard-sphere fluid. We use the framework of the ideal mode-coupling theory and we mostly focus our attention o ...

2002

Phase equilibria and glass transition in colloidal systems with short-ranged attractive interactions: Application to protein crystallization

Giuseppe Foffi, Francesco Sciortino

We have studied a model of a complex fluid consisting of particles interacting through a hard-core and short-range attractive potential of both Yukawa and square-well form. Using a hybrid method, including a self-consistent and quite accurate approximation ...

2002

Confirmation of anomalous dynamical arrest in attractive colloids: A molecular dynamics study

Giuseppe Foffi, Francesco Sciortino

Previous theoretical simulation and experimental studies have indicated that particles with a short-ranged attraction exhibit a range of dynamical arrest phenomena. These include very pronounced reentrance in the dynamical arrest curve, a logarithmic singu ...

2002

Evidence for an unusual dynamical-arrest scenario in short-ranged colloidal systems

Giuseppe Foffi, Francesco Sciortino

Extensive molecular dynamics simulation studies of particles interacting via a short-ranged attractive square-well potential arc reported. The calculated loci of constant diffusion coefficient D in the temperature-packing fraction plane show a reentrant be ...

2002

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