http://experimentationlab.berkeley.edu/sites/default/files/AFMImages/butt_AFM.pdf

Force measurements with the atomic force microscope: Technique, interpretation and applications

Microemulsion-based media as novel drug delivery systems

Over the last few decades, researchers have developed a number of empirical and theoretical models for the correlation and prediction of the thermophysical properties of pure fluids and mixtures treated as pseudo-pure fluids In this paper, a survey of all the state-of-the-art formulations of thermophysical properties is presented The most-accurate thermodynamic properties are obtained from multiparameter Helmholtz-energy-explicit-type formulations For the transport properties, a wider range of methods has been employed, including the extended corresponding states method All of the thermophysical property correlations described here have been implemented into CoolProp, an open-source thermophysical property library This library is written in C++, with wrappers available for the majority of programming languages and platforms of technical interest As of publication, 110 pure and pseudo-pure fluids are included in the library, as well as properties of 40 incompressible fluids and humid air The source code for the CoolProp library is included as an electronic annex

/pdf/pure-and-pseudo-pure-fluid-thermophysical-property-32xpqvl8du.pdf

Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp.

Design and Production of Nanoparticles Formulated From Nano-Emulsion Templates-A Review

This Review discusses ionic electrets: their preparation, their mechanisms of formation, tools for their characterization, and their applications. An electret is a material that has a permanent, macroscopic electric field at its surface; this field can arise from a net orientation of polar groups in the material, or from a net, macroscopic electrostatic charge on the material. An ionic electret is a material that has a net electrostatic charge due to a difference in the number of cationic and anionic charges in the material. Any material that has ions at its surface, or accessible in its interior, has the potential to become an ionic electret. When such a material is brought into contact with some other material, ions can transfer between them. If the anions and cations have different propensities to transfer, the unequal transfer of these ions can result in a net transfer of charge between the two materials. This Review focuses on the experimental evidence and theoretical models for the formation of ionic electrets through this ion-transfer mechanism, and proposes--as a still-unproved hypothesis--that this ion-transfer mechanism may also explain the ubiquitous contact electrification ("static electricity") of materials, such as organic polymers, that do not explicitly have ions at their surface.

Electrostatic Charging Due to Separation of Ions at Interfaces: Contact Electrification of Ionic Electrets

Experimental determination of methane hydrate dissociation curve up to 55 MPa by using a small amount of surfactant as hydrate promoter

The partitioning coefficient of a surfactant between oil and water is related to the free energy of transfer from one phase to the other. The influence of temperature on the partition coefficient of octylphenol ethoxylate oligomers between oil and water is reported. The variation of the partition coefficient with formulation variables can be used as a yardstick for the concept of generalized formulation expression.

Partitioning of ethoxylated octylphenol surfactants in microemulsion-oil-water systems: influence of temperature and relation between partitioning coefficient and physicochemical formulation

Despite claims, based largely on molecular dynamics simulations, that the surface of water at the air/water interface is acidic, with a positive charge, there is compelling experimental evidence that it is in fact basic, with a negative charge due to the specific adsorption of hydroxide ions. The oil/water interface behaves similarly. The pH dependence of the zeta potentials of oil drops has been measured by two very different techniques: on a single drop in a rotating electrophoresis cell and on about 1014 submicrometer drops in a 2 vol % emulsion by an electroacoustic method to give similar results with a sigmoidal pH dependence characterized by an isoelectric point at pH 2−3 and a half adsorption point about pH 5.5, or at 10−8.5 M hydroxide ion. This indicates that hydroxide ion is absorbed much more strongly than other anions. The pH dependence of a single N2 bubble has also been measured and has the same pH dependence, independently of whether HCl or HI is used to adjust the pH. These similarities be...

Strong Specific Hydroxide Ion Binding at the Pristine Oil/Water and Air/Water Interfaces

A technique for measuring the ζ-potential of a gas-liquid interface that overcomes the valid criticisms of previous attempts is proposed and demonstrated for the case of an air bubble in deionized water. The ζ-potential is found to be -65 mV with a reliability exceeding any previously reported results. The apparatus used is a horizontal tube that is rapidly rotating about its axis. The tube contains the liquid and small gas bubbles. An electric field imposed along the tube axis causes the bubble to move and the ζ-potential is related to the electrophoretic mobility.

The ζ-Potential of Gas Bubbles

http://www.firp.ula.ve/CV_profesores/95_COLSUA_Minana.pdf

Jean Lachaise

Papers

Experimental determination of methane hydrate dissociation curve up to 55 MPa by using a small amount of surfactant as hydrate promoter

Partitioning of ethoxylated octylphenol surfactants in microemulsion-oil-water systems: influence of temperature and relation between partitioning coefficient and physicochemical formulation

Strong Specific Hydroxide Ion Binding at the Pristine Oil/Water and Air/Water Interfaces

The ζ-Potential of Gas Bubbles

Solubilization of polar oils with extended surfactants